Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
Linus Torvalds [Fri, 21 May 2010 04:26:12 +0000 (21:26 -0700)]
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (229 commits)
  USB: remove unused usb_buffer_alloc and usb_buffer_free macros
  usb: musb: update gfp/slab.h includes
  USB: ftdi_sio: fix legacy SIO-device header
  USB: kl5usb105: reimplement using generic framework
  USB: kl5usb105: minor clean ups
  USB: kl5usb105: fix memory leak
  USB: io_ti: use kfifo to implement write buffering
  USB: io_ti: remove unsused private counter
  USB: ti_usb: use kfifo to implement write buffering
  USB: ir-usb: fix incorrect write-buffer length
  USB: aircable: fix incorrect write-buffer length
  USB: safe_serial: straighten out read processing
  USB: safe_serial: reimplement read using generic framework
  USB: safe_serial: reimplement write using generic framework
  usb-storage: always print quirks
  USB: usb-storage: trivial debug improvements
  USB: oti6858: use port write fifo
  USB: oti6858: use kfifo to implement write buffering
  USB: cypress_m8: use kfifo to implement write buffering
  USB: cypress_m8: remove unused drain define
  ...

Fix up conflicts (due to usb_buffer_alloc/free renaming) in
drivers/input/tablet/acecad.c
drivers/input/tablet/kbtab.c
drivers/input/tablet/wacom_sys.c
drivers/media/video/gspca/gspca.c
sound/usb/usbaudio.c

22 files changed:
1  2 
drivers/input/tablet/acecad.c
drivers/input/tablet/kbtab.c
drivers/input/tablet/wacom_sys.c
drivers/input/touchscreen/usbtouchscreen.c
drivers/media/video/au0828/au0828-video.c
drivers/media/video/cx231xx/cx231xx-core.c
drivers/media/video/em28xx/em28xx-core.c
drivers/media/video/gspca/gspca.c
drivers/media/video/hdpvr/hdpvr-video.c
drivers/media/video/tlg2300/pd-main.c
drivers/media/video/tlg2300/pd-video.c
drivers/net/can/usb/ems_usb.c
drivers/net/usb/kaweth.c
drivers/net/wimax/i2400m/usb.c
drivers/net/wireless/ath/ar9170/usb.c
drivers/usb/host/ehci-omap.c
drivers/usb/wusbcore/wa-xfer.c
include/linux/usb/audio.h
include/linux/wait.h
kernel/sched.c
sound/usb/midi.c
sound/usb/misc/ua101.c

@@@ -246,11 -252,13 +246,11 @@@ static void usb_acecad_disconnect(struc
        struct usb_acecad *acecad = usb_get_intfdata(intf);
  
        usb_set_intfdata(intf, NULL);
 -      if (acecad) {
 -              usb_kill_urb(acecad->irq);
 -              input_unregister_device(acecad->input);
 -              usb_free_urb(acecad->irq);
 -              usb_free_coherent(interface_to_usbdev(intf), 10, acecad->data, acecad->data_dma);
 -              kfree(acecad);
 -      }
 +
 +      input_unregister_device(acecad->input);
 +      usb_free_urb(acecad->irq);
-       usb_buffer_free(acecad->usbdev, 8, acecad->data, acecad->data_dma);
++      usb_free_coherent(acecad->usbdev, 8, acecad->data, acecad->data_dma);
 +      kfree(acecad);
  }
  
  static struct usb_device_id usb_acecad_id_table [] = {
@@@ -173,7 -182,7 +173,7 @@@ static int kbtab_probe(struct usb_inter
        return 0;
  
   fail3:       usb_free_urb(kbtab->irq);
-  fail2:       usb_buffer_free(dev, 8, kbtab->data, kbtab->data_dma);
 - fail2:       usb_free_coherent(dev, 10, kbtab->data, kbtab->data_dma);
++ fail2:       usb_free_coherent(dev, 8, kbtab->data, kbtab->data_dma);
   fail1:       input_free_device(input_dev);
        kfree(kbtab);
        return error;
@@@ -184,11 -193,13 +184,11 @@@ static void kbtab_disconnect(struct usb
        struct kbtab *kbtab = usb_get_intfdata(intf);
  
        usb_set_intfdata(intf, NULL);
 -      if (kbtab) {
 -              usb_kill_urb(kbtab->irq);
 -              input_unregister_device(kbtab->dev);
 -              usb_free_urb(kbtab->irq);
 -              usb_free_coherent(interface_to_usbdev(intf), 10, kbtab->data, kbtab->data_dma);
 -              kfree(kbtab);
 -      }
 +
 +      input_unregister_device(kbtab->dev);
 +      usb_free_urb(kbtab->irq);
-       usb_buffer_free(kbtab->usbdev, 8, kbtab->data, kbtab->data_dma);
++      usb_free_coherent(kbtab->usbdev, 8, kbtab->data, kbtab->data_dma);
 +      kfree(kbtab);
  }
  
  static struct usb_driver kbtab_driver = {
@@@ -534,11 -632,11 +534,11 @@@ static int wacom_probe(struct usb_inter
        usb_set_intfdata(intf, wacom);
        return 0;
  
 + fail4:       wacom_remove_shared_data(wacom_wac);
   fail3:       usb_free_urb(wacom->irq);
-  fail2:       usb_buffer_free(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
+  fail2:       usb_free_coherent(dev, WACOM_PKGLEN_MAX, wacom_wac->data, wacom->data_dma);
   fail1:       input_free_device(input_dev);
        kfree(wacom);
 -      kfree(wacom_wac);
        return error;
  }
  
@@@ -549,11 -647,11 +549,11 @@@ static void wacom_disconnect(struct usb
        usb_set_intfdata(intf, NULL);
  
        usb_kill_urb(wacom->irq);
 -      input_unregister_device(wacom->dev);
 +      input_unregister_device(wacom->wacom_wac.input);
        usb_free_urb(wacom->irq);
-       usb_buffer_free(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
+       usb_free_coherent(interface_to_usbdev(intf), WACOM_PKGLEN_MAX,
 -                        wacom->wacom_wac->data, wacom->data_dma);
 -      kfree(wacom->wacom_wac);
 +                      wacom->wacom_wac.data, wacom->data_dma);
 +      wacom_remove_shared_data(&wacom->wacom_wac);
        kfree(wacom);
  }
  
@@@ -213,7 -213,7 +213,7 @@@ static int alloc_and_submit_int_urb(str
                goto error;
        }
  
-       buffer = usb_buffer_alloc(dev, buffer_len,
 -      buffer = usb_alloc_coherent(dev, ep->wMaxPacketSize,
++      buffer = usb_alloc_coherent(dev, buffer_len,
                                GFP_KERNEL, &urb->transfer_dma);
        if (!buffer) {
                ret = -ENOMEM;
Simple merge
Simple merge
Simple merge
Simple merge
Simple merge
Simple merge
Simple merge
Simple merge
Simple merge
diff --cc kernel/sched.c
Simple merge
index 2c1558c,0000000..8b1e4b1
mode 100644,000000..100644
--- /dev/null
@@@ -1,2081 -1,0 +1,2081 @@@
 +/*
 + * usbmidi.c - ALSA USB MIDI driver
 + *
 + * Copyright (c) 2002-2009 Clemens Ladisch
 + * All rights reserved.
 + *
 + * Based on the OSS usb-midi driver by NAGANO Daisuke,
 + *          NetBSD's umidi driver by Takuya SHIOZAKI,
 + *          the "USB Device Class Definition for MIDI Devices" by Roland
 + *
 + * Redistribution and use in source and binary forms, with or without
 + * modification, are permitted provided that the following conditions
 + * are met:
 + * 1. Redistributions of source code must retain the above copyright
 + *    notice, this list of conditions, and the following disclaimer,
 + *    without modification.
 + * 2. The name of the author may not be used to endorse or promote products
 + *    derived from this software without specific prior written permission.
 + *
 + * Alternatively, this software may be distributed and/or modified under the
 + * terms of the GNU General Public License as published by the Free Software
 + * Foundation; either version 2 of the License, or (at your option) any later
 + * version.
 + *
 + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 + * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 + * SUCH DAMAGE.
 + */
 +
 +#include <linux/kernel.h>
 +#include <linux/types.h>
 +#include <linux/bitops.h>
 +#include <linux/interrupt.h>
 +#include <linux/spinlock.h>
 +#include <linux/string.h>
 +#include <linux/init.h>
 +#include <linux/slab.h>
 +#include <linux/timer.h>
 +#include <linux/usb.h>
 +#include <linux/wait.h>
 +#include <linux/usb/audio.h>
 +
 +#include <sound/core.h>
 +#include <sound/control.h>
 +#include <sound/rawmidi.h>
 +#include <sound/asequencer.h>
 +#include "usbaudio.h"
 +#include "midi.h"
 +#include "helper.h"
 +
 +/*
 + * define this to log all USB packets
 + */
 +/* #define DUMP_PACKETS */
 +
 +/*
 + * how long to wait after some USB errors, so that khubd can disconnect() us
 + * without too many spurious errors
 + */
 +#define ERROR_DELAY_JIFFIES (HZ / 10)
 +
 +#define OUTPUT_URBS 7
 +#define INPUT_URBS 7
 +
 +
 +MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
 +MODULE_DESCRIPTION("USB Audio/MIDI helper module");
 +MODULE_LICENSE("Dual BSD/GPL");
 +
 +
 +struct usb_ms_header_descriptor {
 +      __u8  bLength;
 +      __u8  bDescriptorType;
 +      __u8  bDescriptorSubtype;
 +      __u8  bcdMSC[2];
 +      __le16 wTotalLength;
 +} __attribute__ ((packed));
 +
 +struct usb_ms_endpoint_descriptor {
 +      __u8  bLength;
 +      __u8  bDescriptorType;
 +      __u8  bDescriptorSubtype;
 +      __u8  bNumEmbMIDIJack;
 +      __u8  baAssocJackID[0];
 +} __attribute__ ((packed));
 +
 +struct snd_usb_midi_in_endpoint;
 +struct snd_usb_midi_out_endpoint;
 +struct snd_usb_midi_endpoint;
 +
 +struct usb_protocol_ops {
 +      void (*input)(struct snd_usb_midi_in_endpoint*, uint8_t*, int);
 +      void (*output)(struct snd_usb_midi_out_endpoint *ep, struct urb *urb);
 +      void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t);
 +      void (*init_out_endpoint)(struct snd_usb_midi_out_endpoint*);
 +      void (*finish_out_endpoint)(struct snd_usb_midi_out_endpoint*);
 +};
 +
 +struct snd_usb_midi {
 +      struct usb_device *dev;
 +      struct snd_card *card;
 +      struct usb_interface *iface;
 +      const struct snd_usb_audio_quirk *quirk;
 +      struct snd_rawmidi *rmidi;
 +      struct usb_protocol_ops* usb_protocol_ops;
 +      struct list_head list;
 +      struct timer_list error_timer;
 +      spinlock_t disc_lock;
 +      struct mutex mutex;
 +      u32 usb_id;
 +      int next_midi_device;
 +
 +      struct snd_usb_midi_endpoint {
 +              struct snd_usb_midi_out_endpoint *out;
 +              struct snd_usb_midi_in_endpoint *in;
 +      } endpoints[MIDI_MAX_ENDPOINTS];
 +      unsigned long input_triggered;
 +      unsigned int opened;
 +      unsigned char disconnected;
 +
 +      struct snd_kcontrol *roland_load_ctl;
 +};
 +
 +struct snd_usb_midi_out_endpoint {
 +      struct snd_usb_midi* umidi;
 +      struct out_urb_context {
 +              struct urb *urb;
 +              struct snd_usb_midi_out_endpoint *ep;
 +      } urbs[OUTPUT_URBS];
 +      unsigned int active_urbs;
 +      unsigned int drain_urbs;
 +      int max_transfer;               /* size of urb buffer */
 +      struct tasklet_struct tasklet;
 +      unsigned int next_urb;
 +      spinlock_t buffer_lock;
 +
 +      struct usbmidi_out_port {
 +              struct snd_usb_midi_out_endpoint* ep;
 +              struct snd_rawmidi_substream *substream;
 +              int active;
 +              uint8_t cable;          /* cable number << 4 */
 +              uint8_t state;
 +#define STATE_UNKNOWN 0
 +#define STATE_1PARAM  1
 +#define STATE_2PARAM_1        2
 +#define STATE_2PARAM_2        3
 +#define STATE_SYSEX_0 4
 +#define STATE_SYSEX_1 5
 +#define STATE_SYSEX_2 6
 +              uint8_t data[2];
 +      } ports[0x10];
 +      int current_port;
 +
 +      wait_queue_head_t drain_wait;
 +};
 +
 +struct snd_usb_midi_in_endpoint {
 +      struct snd_usb_midi* umidi;
 +      struct urb* urbs[INPUT_URBS];
 +      struct usbmidi_in_port {
 +              struct snd_rawmidi_substream *substream;
 +              u8 running_status_length;
 +      } ports[0x10];
 +      u8 seen_f5;
 +      u8 error_resubmit;
 +      int current_port;
 +};
 +
 +static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep);
 +
 +static const uint8_t snd_usbmidi_cin_length[] = {
 +      0, 0, 2, 3, 3, 1, 2, 3, 3, 3, 3, 3, 2, 2, 3, 1
 +};
 +
 +/*
 + * Submits the URB, with error handling.
 + */
 +static int snd_usbmidi_submit_urb(struct urb* urb, gfp_t flags)
 +{
 +      int err = usb_submit_urb(urb, flags);
 +      if (err < 0 && err != -ENODEV)
 +              snd_printk(KERN_ERR "usb_submit_urb: %d\n", err);
 +      return err;
 +}
 +
 +/*
 + * Error handling for URB completion functions.
 + */
 +static int snd_usbmidi_urb_error(int status)
 +{
 +      switch (status) {
 +      /* manually unlinked, or device gone */
 +      case -ENOENT:
 +      case -ECONNRESET:
 +      case -ESHUTDOWN:
 +      case -ENODEV:
 +              return -ENODEV;
 +      /* errors that might occur during unplugging */
 +      case -EPROTO:
 +      case -ETIME:
 +      case -EILSEQ:
 +              return -EIO;
 +      default:
 +              snd_printk(KERN_ERR "urb status %d\n", status);
 +              return 0; /* continue */
 +      }
 +}
 +
 +/*
 + * Receives a chunk of MIDI data.
 + */
 +static void snd_usbmidi_input_data(struct snd_usb_midi_in_endpoint* ep, int portidx,
 +                                 uint8_t* data, int length)
 +{
 +      struct usbmidi_in_port* port = &ep->ports[portidx];
 +
 +      if (!port->substream) {
 +              snd_printd("unexpected port %d!\n", portidx);
 +              return;
 +      }
 +      if (!test_bit(port->substream->number, &ep->umidi->input_triggered))
 +              return;
 +      snd_rawmidi_receive(port->substream, data, length);
 +}
 +
 +#ifdef DUMP_PACKETS
 +static void dump_urb(const char *type, const u8 *data, int length)
 +{
 +      snd_printk(KERN_DEBUG "%s packet: [", type);
 +      for (; length > 0; ++data, --length)
 +              printk(" %02x", *data);
 +      printk(" ]\n");
 +}
 +#else
 +#define dump_urb(type, data, length) /* nothing */
 +#endif
 +
 +/*
 + * Processes the data read from the device.
 + */
 +static void snd_usbmidi_in_urb_complete(struct urb* urb)
 +{
 +      struct snd_usb_midi_in_endpoint* ep = urb->context;
 +
 +      if (urb->status == 0) {
 +              dump_urb("received", urb->transfer_buffer, urb->actual_length);
 +              ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer,
 +                                                 urb->actual_length);
 +      } else {
 +              int err = snd_usbmidi_urb_error(urb->status);
 +              if (err < 0) {
 +                      if (err != -ENODEV) {
 +                              ep->error_resubmit = 1;
 +                              mod_timer(&ep->umidi->error_timer,
 +                                        jiffies + ERROR_DELAY_JIFFIES);
 +                      }
 +                      return;
 +              }
 +      }
 +
 +      urb->dev = ep->umidi->dev;
 +      snd_usbmidi_submit_urb(urb, GFP_ATOMIC);
 +}
 +
 +static void snd_usbmidi_out_urb_complete(struct urb* urb)
 +{
 +      struct out_urb_context *context = urb->context;
 +      struct snd_usb_midi_out_endpoint* ep = context->ep;
 +      unsigned int urb_index;
 +
 +      spin_lock(&ep->buffer_lock);
 +      urb_index = context - ep->urbs;
 +      ep->active_urbs &= ~(1 << urb_index);
 +      if (unlikely(ep->drain_urbs)) {
 +              ep->drain_urbs &= ~(1 << urb_index);
 +              wake_up(&ep->drain_wait);
 +      }
 +      spin_unlock(&ep->buffer_lock);
 +      if (urb->status < 0) {
 +              int err = snd_usbmidi_urb_error(urb->status);
 +              if (err < 0) {
 +                      if (err != -ENODEV)
 +                              mod_timer(&ep->umidi->error_timer,
 +                                        jiffies + ERROR_DELAY_JIFFIES);
 +                      return;
 +              }
 +      }
 +      snd_usbmidi_do_output(ep);
 +}
 +
 +/*
 + * This is called when some data should be transferred to the device
 + * (from one or more substreams).
 + */
 +static void snd_usbmidi_do_output(struct snd_usb_midi_out_endpoint* ep)
 +{
 +      unsigned int urb_index;
 +      struct urb* urb;
 +      unsigned long flags;
 +
 +      spin_lock_irqsave(&ep->buffer_lock, flags);
 +      if (ep->umidi->disconnected) {
 +              spin_unlock_irqrestore(&ep->buffer_lock, flags);
 +              return;
 +      }
 +
 +      urb_index = ep->next_urb;
 +      for (;;) {
 +              if (!(ep->active_urbs & (1 << urb_index))) {
 +                      urb = ep->urbs[urb_index].urb;
 +                      urb->transfer_buffer_length = 0;
 +                      ep->umidi->usb_protocol_ops->output(ep, urb);
 +                      if (urb->transfer_buffer_length == 0)
 +                              break;
 +
 +                      dump_urb("sending", urb->transfer_buffer,
 +                               urb->transfer_buffer_length);
 +                      urb->dev = ep->umidi->dev;
 +                      if (snd_usbmidi_submit_urb(urb, GFP_ATOMIC) < 0)
 +                              break;
 +                      ep->active_urbs |= 1 << urb_index;
 +              }
 +              if (++urb_index >= OUTPUT_URBS)
 +                      urb_index = 0;
 +              if (urb_index == ep->next_urb)
 +                      break;
 +      }
 +      ep->next_urb = urb_index;
 +      spin_unlock_irqrestore(&ep->buffer_lock, flags);
 +}
 +
 +static void snd_usbmidi_out_tasklet(unsigned long data)
 +{
 +      struct snd_usb_midi_out_endpoint* ep = (struct snd_usb_midi_out_endpoint *) data;
 +
 +      snd_usbmidi_do_output(ep);
 +}
 +
 +/* called after transfers had been interrupted due to some USB error */
 +static void snd_usbmidi_error_timer(unsigned long data)
 +{
 +      struct snd_usb_midi *umidi = (struct snd_usb_midi *)data;
 +      unsigned int i, j;
 +
 +      spin_lock(&umidi->disc_lock);
 +      if (umidi->disconnected) {
 +              spin_unlock(&umidi->disc_lock);
 +              return;
 +      }
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
 +              struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in;
 +              if (in && in->error_resubmit) {
 +                      in->error_resubmit = 0;
 +                      for (j = 0; j < INPUT_URBS; ++j) {
 +                              in->urbs[j]->dev = umidi->dev;
 +                              snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC);
 +                      }
 +              }
 +              if (umidi->endpoints[i].out)
 +                      snd_usbmidi_do_output(umidi->endpoints[i].out);
 +      }
 +      spin_unlock(&umidi->disc_lock);
 +}
 +
 +/* helper function to send static data that may not DMA-able */
 +static int send_bulk_static_data(struct snd_usb_midi_out_endpoint* ep,
 +                               const void *data, int len)
 +{
 +      int err = 0;
 +      void *buf = kmemdup(data, len, GFP_KERNEL);
 +      if (!buf)
 +              return -ENOMEM;
 +      dump_urb("sending", buf, len);
 +      if (ep->urbs[0].urb)
 +              err = usb_bulk_msg(ep->umidi->dev, ep->urbs[0].urb->pipe,
 +                                 buf, len, NULL, 250);
 +      kfree(buf);
 +      return err;
 +}
 +
 +/*
 + * Standard USB MIDI protocol: see the spec.
 + * Midiman protocol: like the standard protocol, but the control byte is the
 + * fourth byte in each packet, and uses length instead of CIN.
 + */
 +
 +static void snd_usbmidi_standard_input(struct snd_usb_midi_in_endpoint* ep,
 +                                     uint8_t* buffer, int buffer_length)
 +{
 +      int i;
 +
 +      for (i = 0; i + 3 < buffer_length; i += 4)
 +              if (buffer[i] != 0) {
 +                      int cable = buffer[i] >> 4;
 +                      int length = snd_usbmidi_cin_length[buffer[i] & 0x0f];
 +                      snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
 +              }
 +}
 +
 +static void snd_usbmidi_midiman_input(struct snd_usb_midi_in_endpoint* ep,
 +                                    uint8_t* buffer, int buffer_length)
 +{
 +      int i;
 +
 +      for (i = 0; i + 3 < buffer_length; i += 4)
 +              if (buffer[i + 3] != 0) {
 +                      int port = buffer[i + 3] >> 4;
 +                      int length = buffer[i + 3] & 3;
 +                      snd_usbmidi_input_data(ep, port, &buffer[i], length);
 +              }
 +}
 +
 +/*
 + * Buggy M-Audio device: running status on input results in a packet that has
 + * the data bytes but not the status byte and that is marked with CIN 4.
 + */
 +static void snd_usbmidi_maudio_broken_running_status_input(
 +                                      struct snd_usb_midi_in_endpoint* ep,
 +                                      uint8_t* buffer, int buffer_length)
 +{
 +      int i;
 +
 +      for (i = 0; i + 3 < buffer_length; i += 4)
 +              if (buffer[i] != 0) {
 +                      int cable = buffer[i] >> 4;
 +                      u8 cin = buffer[i] & 0x0f;
 +                      struct usbmidi_in_port *port = &ep->ports[cable];
 +                      int length;
 +                      
 +                      length = snd_usbmidi_cin_length[cin];
 +                      if (cin == 0xf && buffer[i + 1] >= 0xf8)
 +                              ; /* realtime msg: no running status change */
 +                      else if (cin >= 0x8 && cin <= 0xe)
 +                              /* channel msg */
 +                              port->running_status_length = length - 1;
 +                      else if (cin == 0x4 &&
 +                               port->running_status_length != 0 &&
 +                               buffer[i + 1] < 0x80)
 +                              /* CIN 4 that is not a SysEx */
 +                              length = port->running_status_length;
 +                      else
 +                              /*
 +                               * All other msgs cannot begin running status.
 +                               * (A channel msg sent as two or three CIN 0xF
 +                               * packets could in theory, but this device
 +                               * doesn't use this format.)
 +                               */
 +                              port->running_status_length = 0;
 +                      snd_usbmidi_input_data(ep, cable, &buffer[i + 1], length);
 +              }
 +}
 +
 +/*
 + * CME protocol: like the standard protocol, but SysEx commands are sent as a
 + * single USB packet preceded by a 0x0F byte.
 + */
 +static void snd_usbmidi_cme_input(struct snd_usb_midi_in_endpoint *ep,
 +                                uint8_t *buffer, int buffer_length)
 +{
 +      if (buffer_length < 2 || (buffer[0] & 0x0f) != 0x0f)
 +              snd_usbmidi_standard_input(ep, buffer, buffer_length);
 +      else
 +              snd_usbmidi_input_data(ep, buffer[0] >> 4,
 +                                     &buffer[1], buffer_length - 1);
 +}
 +
 +/*
 + * Adds one USB MIDI packet to the output buffer.
 + */
 +static void snd_usbmidi_output_standard_packet(struct urb* urb, uint8_t p0,
 +                                             uint8_t p1, uint8_t p2, uint8_t p3)
 +{
 +
 +      uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
 +      buf[0] = p0;
 +      buf[1] = p1;
 +      buf[2] = p2;
 +      buf[3] = p3;
 +      urb->transfer_buffer_length += 4;
 +}
 +
 +/*
 + * Adds one Midiman packet to the output buffer.
 + */
 +static void snd_usbmidi_output_midiman_packet(struct urb* urb, uint8_t p0,
 +                                            uint8_t p1, uint8_t p2, uint8_t p3)
 +{
 +
 +      uint8_t* buf = (uint8_t*)urb->transfer_buffer + urb->transfer_buffer_length;
 +      buf[0] = p1;
 +      buf[1] = p2;
 +      buf[2] = p3;
 +      buf[3] = (p0 & 0xf0) | snd_usbmidi_cin_length[p0 & 0x0f];
 +      urb->transfer_buffer_length += 4;
 +}
 +
 +/*
 + * Converts MIDI commands to USB MIDI packets.
 + */
 +static void snd_usbmidi_transmit_byte(struct usbmidi_out_port* port,
 +                                    uint8_t b, struct urb* urb)
 +{
 +      uint8_t p0 = port->cable;
 +      void (*output_packet)(struct urb*, uint8_t, uint8_t, uint8_t, uint8_t) =
 +              port->ep->umidi->usb_protocol_ops->output_packet;
 +
 +      if (b >= 0xf8) {
 +              output_packet(urb, p0 | 0x0f, b, 0, 0);
 +      } else if (b >= 0xf0) {
 +              switch (b) {
 +              case 0xf0:
 +                      port->data[0] = b;
 +                      port->state = STATE_SYSEX_1;
 +                      break;
 +              case 0xf1:
 +              case 0xf3:
 +                      port->data[0] = b;
 +                      port->state = STATE_1PARAM;
 +                      break;
 +              case 0xf2:
 +                      port->data[0] = b;
 +                      port->state = STATE_2PARAM_1;
 +                      break;
 +              case 0xf4:
 +              case 0xf5:
 +                      port->state = STATE_UNKNOWN;
 +                      break;
 +              case 0xf6:
 +                      output_packet(urb, p0 | 0x05, 0xf6, 0, 0);
 +                      port->state = STATE_UNKNOWN;
 +                      break;
 +              case 0xf7:
 +                      switch (port->state) {
 +                      case STATE_SYSEX_0:
 +                              output_packet(urb, p0 | 0x05, 0xf7, 0, 0);
 +                              break;
 +                      case STATE_SYSEX_1:
 +                              output_packet(urb, p0 | 0x06, port->data[0], 0xf7, 0);
 +                              break;
 +                      case STATE_SYSEX_2:
 +                              output_packet(urb, p0 | 0x07, port->data[0], port->data[1], 0xf7);
 +                              break;
 +                      }
 +                      port->state = STATE_UNKNOWN;
 +                      break;
 +              }
 +      } else if (b >= 0x80) {
 +              port->data[0] = b;
 +              if (b >= 0xc0 && b <= 0xdf)
 +                      port->state = STATE_1PARAM;
 +              else
 +                      port->state = STATE_2PARAM_1;
 +      } else { /* b < 0x80 */
 +              switch (port->state) {
 +              case STATE_1PARAM:
 +                      if (port->data[0] < 0xf0) {
 +                              p0 |= port->data[0] >> 4;
 +                      } else {
 +                              p0 |= 0x02;
 +                              port->state = STATE_UNKNOWN;
 +                      }
 +                      output_packet(urb, p0, port->data[0], b, 0);
 +                      break;
 +              case STATE_2PARAM_1:
 +                      port->data[1] = b;
 +                      port->state = STATE_2PARAM_2;
 +                      break;
 +              case STATE_2PARAM_2:
 +                      if (port->data[0] < 0xf0) {
 +                              p0 |= port->data[0] >> 4;
 +                              port->state = STATE_2PARAM_1;
 +                      } else {
 +                              p0 |= 0x03;
 +                              port->state = STATE_UNKNOWN;
 +                      }
 +                      output_packet(urb, p0, port->data[0], port->data[1], b);
 +                      break;
 +              case STATE_SYSEX_0:
 +                      port->data[0] = b;
 +                      port->state = STATE_SYSEX_1;
 +                      break;
 +              case STATE_SYSEX_1:
 +                      port->data[1] = b;
 +                      port->state = STATE_SYSEX_2;
 +                      break;
 +              case STATE_SYSEX_2:
 +                      output_packet(urb, p0 | 0x04, port->data[0], port->data[1], b);
 +                      port->state = STATE_SYSEX_0;
 +                      break;
 +              }
 +      }
 +}
 +
 +static void snd_usbmidi_standard_output(struct snd_usb_midi_out_endpoint* ep,
 +                                      struct urb *urb)
 +{
 +      int p;
 +
 +      /* FIXME: lower-numbered ports can starve higher-numbered ports */
 +      for (p = 0; p < 0x10; ++p) {
 +              struct usbmidi_out_port* port = &ep->ports[p];
 +              if (!port->active)
 +                      continue;
 +              while (urb->transfer_buffer_length + 3 < ep->max_transfer) {
 +                      uint8_t b;
 +                      if (snd_rawmidi_transmit(port->substream, &b, 1) != 1) {
 +                              port->active = 0;
 +                              break;
 +                      }
 +                      snd_usbmidi_transmit_byte(port, b, urb);
 +              }
 +      }
 +}
 +
 +static struct usb_protocol_ops snd_usbmidi_standard_ops = {
 +      .input = snd_usbmidi_standard_input,
 +      .output = snd_usbmidi_standard_output,
 +      .output_packet = snd_usbmidi_output_standard_packet,
 +};
 +
 +static struct usb_protocol_ops snd_usbmidi_midiman_ops = {
 +      .input = snd_usbmidi_midiman_input,
 +      .output = snd_usbmidi_standard_output, 
 +      .output_packet = snd_usbmidi_output_midiman_packet,
 +};
 +
 +static struct usb_protocol_ops snd_usbmidi_maudio_broken_running_status_ops = {
 +      .input = snd_usbmidi_maudio_broken_running_status_input,
 +      .output = snd_usbmidi_standard_output, 
 +      .output_packet = snd_usbmidi_output_standard_packet,
 +};
 +
 +static struct usb_protocol_ops snd_usbmidi_cme_ops = {
 +      .input = snd_usbmidi_cme_input,
 +      .output = snd_usbmidi_standard_output,
 +      .output_packet = snd_usbmidi_output_standard_packet,
 +};
 +
 +/*
 + * Novation USB MIDI protocol: number of data bytes is in the first byte
 + * (when receiving) (+1!) or in the second byte (when sending); data begins
 + * at the third byte.
 + */
 +
 +static void snd_usbmidi_novation_input(struct snd_usb_midi_in_endpoint* ep,
 +                                     uint8_t* buffer, int buffer_length)
 +{
 +      if (buffer_length < 2 || !buffer[0] || buffer_length < buffer[0] + 1)
 +              return;
 +      snd_usbmidi_input_data(ep, 0, &buffer[2], buffer[0] - 1);
 +}
 +
 +static void snd_usbmidi_novation_output(struct snd_usb_midi_out_endpoint* ep,
 +                                      struct urb *urb)
 +{
 +      uint8_t* transfer_buffer;
 +      int count;
 +
 +      if (!ep->ports[0].active)
 +              return;
 +      transfer_buffer = urb->transfer_buffer;
 +      count = snd_rawmidi_transmit(ep->ports[0].substream,
 +                                   &transfer_buffer[2],
 +                                   ep->max_transfer - 2);
 +      if (count < 1) {
 +              ep->ports[0].active = 0;
 +              return;
 +      }
 +      transfer_buffer[0] = 0;
 +      transfer_buffer[1] = count;
 +      urb->transfer_buffer_length = 2 + count;
 +}
 +
 +static struct usb_protocol_ops snd_usbmidi_novation_ops = {
 +      .input = snd_usbmidi_novation_input,
 +      .output = snd_usbmidi_novation_output,
 +};
 +
 +/*
 + * "raw" protocol: used by the MOTU FastLane.
 + */
 +
 +static void snd_usbmidi_raw_input(struct snd_usb_midi_in_endpoint* ep,
 +                                uint8_t* buffer, int buffer_length)
 +{
 +      snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
 +}
 +
 +static void snd_usbmidi_raw_output(struct snd_usb_midi_out_endpoint* ep,
 +                                 struct urb *urb)
 +{
 +      int count;
 +
 +      if (!ep->ports[0].active)
 +              return;
 +      count = snd_rawmidi_transmit(ep->ports[0].substream,
 +                                   urb->transfer_buffer,
 +                                   ep->max_transfer);
 +      if (count < 1) {
 +              ep->ports[0].active = 0;
 +              return;
 +      }
 +      urb->transfer_buffer_length = count;
 +}
 +
 +static struct usb_protocol_ops snd_usbmidi_raw_ops = {
 +      .input = snd_usbmidi_raw_input,
 +      .output = snd_usbmidi_raw_output,
 +};
 +
 +static void snd_usbmidi_us122l_input(struct snd_usb_midi_in_endpoint *ep,
 +                                   uint8_t *buffer, int buffer_length)
 +{
 +      if (buffer_length != 9)
 +              return;
 +      buffer_length = 8;
 +      while (buffer_length && buffer[buffer_length - 1] == 0xFD)
 +              buffer_length--;
 +      if (buffer_length)
 +              snd_usbmidi_input_data(ep, 0, buffer, buffer_length);
 +}
 +
 +static void snd_usbmidi_us122l_output(struct snd_usb_midi_out_endpoint *ep,
 +                                    struct urb *urb)
 +{
 +      int count;
 +
 +      if (!ep->ports[0].active)
 +              return;
 +      count = snd_usb_get_speed(ep->umidi->dev) == USB_SPEED_HIGH ? 1 : 2;
 +      count = snd_rawmidi_transmit(ep->ports[0].substream,
 +                                   urb->transfer_buffer,
 +                                   count);
 +      if (count < 1) {
 +              ep->ports[0].active = 0;
 +              return;
 +      }
 +
 +      memset(urb->transfer_buffer + count, 0xFD, 9 - count);
 +      urb->transfer_buffer_length = count;
 +}
 +
 +static struct usb_protocol_ops snd_usbmidi_122l_ops = {
 +      .input = snd_usbmidi_us122l_input,
 +      .output = snd_usbmidi_us122l_output,
 +};
 +
 +/*
 + * Emagic USB MIDI protocol: raw MIDI with "F5 xx" port switching.
 + */
 +
 +static void snd_usbmidi_emagic_init_out(struct snd_usb_midi_out_endpoint* ep)
 +{
 +      static const u8 init_data[] = {
 +              /* initialization magic: "get version" */
 +              0xf0,
 +              0x00, 0x20, 0x31,       /* Emagic */
 +              0x64,                   /* Unitor8 */
 +              0x0b,                   /* version number request */
 +              0x00,                   /* command version */
 +              0x00,                   /* EEPROM, box 0 */
 +              0xf7
 +      };
 +      send_bulk_static_data(ep, init_data, sizeof(init_data));
 +      /* while we're at it, pour on more magic */
 +      send_bulk_static_data(ep, init_data, sizeof(init_data));
 +}
 +
 +static void snd_usbmidi_emagic_finish_out(struct snd_usb_midi_out_endpoint* ep)
 +{
 +      static const u8 finish_data[] = {
 +              /* switch to patch mode with last preset */
 +              0xf0,
 +              0x00, 0x20, 0x31,       /* Emagic */
 +              0x64,                   /* Unitor8 */
 +              0x10,                   /* patch switch command */
 +              0x00,                   /* command version */
 +              0x7f,                   /* to all boxes */
 +              0x40,                   /* last preset in EEPROM */
 +              0xf7
 +      };
 +      send_bulk_static_data(ep, finish_data, sizeof(finish_data));
 +}
 +
 +static void snd_usbmidi_emagic_input(struct snd_usb_midi_in_endpoint* ep,
 +                                   uint8_t* buffer, int buffer_length)
 +{
 +      int i;
 +
 +      /* FF indicates end of valid data */
 +      for (i = 0; i < buffer_length; ++i)
 +              if (buffer[i] == 0xff) {
 +                      buffer_length = i;
 +                      break;
 +              }
 +
 +      /* handle F5 at end of last buffer */
 +      if (ep->seen_f5)
 +              goto switch_port;
 +
 +      while (buffer_length > 0) {
 +              /* determine size of data until next F5 */
 +              for (i = 0; i < buffer_length; ++i)
 +                      if (buffer[i] == 0xf5)
 +                              break;
 +              snd_usbmidi_input_data(ep, ep->current_port, buffer, i);
 +              buffer += i;
 +              buffer_length -= i;
 +
 +              if (buffer_length <= 0)
 +                      break;
 +              /* assert(buffer[0] == 0xf5); */
 +              ep->seen_f5 = 1;
 +              ++buffer;
 +              --buffer_length;
 +
 +      switch_port:
 +              if (buffer_length <= 0)
 +                      break;
 +              if (buffer[0] < 0x80) {
 +                      ep->current_port = (buffer[0] - 1) & 15;
 +                      ++buffer;
 +                      --buffer_length;
 +              }
 +              ep->seen_f5 = 0;
 +      }
 +}
 +
 +static void snd_usbmidi_emagic_output(struct snd_usb_midi_out_endpoint* ep,
 +                                    struct urb *urb)
 +{
 +      int port0 = ep->current_port;
 +      uint8_t* buf = urb->transfer_buffer;
 +      int buf_free = ep->max_transfer;
 +      int length, i;
 +
 +      for (i = 0; i < 0x10; ++i) {
 +              /* round-robin, starting at the last current port */
 +              int portnum = (port0 + i) & 15;
 +              struct usbmidi_out_port* port = &ep->ports[portnum];
 +
 +              if (!port->active)
 +                      continue;
 +              if (snd_rawmidi_transmit_peek(port->substream, buf, 1) != 1) {
 +                      port->active = 0;
 +                      continue;
 +              }
 +
 +              if (portnum != ep->current_port) {
 +                      if (buf_free < 2)
 +                              break;
 +                      ep->current_port = portnum;
 +                      buf[0] = 0xf5;
 +                      buf[1] = (portnum + 1) & 15;
 +                      buf += 2;
 +                      buf_free -= 2;
 +              }
 +
 +              if (buf_free < 1)
 +                      break;
 +              length = snd_rawmidi_transmit(port->substream, buf, buf_free);
 +              if (length > 0) {
 +                      buf += length;
 +                      buf_free -= length;
 +                      if (buf_free < 1)
 +                              break;
 +              }
 +      }
 +      if (buf_free < ep->max_transfer && buf_free > 0) {
 +              *buf = 0xff;
 +              --buf_free;
 +      }
 +      urb->transfer_buffer_length = ep->max_transfer - buf_free;
 +}
 +
 +static struct usb_protocol_ops snd_usbmidi_emagic_ops = {
 +      .input = snd_usbmidi_emagic_input,
 +      .output = snd_usbmidi_emagic_output,
 +      .init_out_endpoint = snd_usbmidi_emagic_init_out,
 +      .finish_out_endpoint = snd_usbmidi_emagic_finish_out,
 +};
 +
 +
 +static void update_roland_altsetting(struct snd_usb_midi* umidi)
 +{
 +      struct usb_interface *intf;
 +      struct usb_host_interface *hostif;
 +      struct usb_interface_descriptor *intfd;
 +      int is_light_load;
 +
 +      intf = umidi->iface;
 +      is_light_load = intf->cur_altsetting != intf->altsetting;
 +      if (umidi->roland_load_ctl->private_value == is_light_load)
 +              return;
 +      hostif = &intf->altsetting[umidi->roland_load_ctl->private_value];
 +      intfd = get_iface_desc(hostif);
 +      snd_usbmidi_input_stop(&umidi->list);
 +      usb_set_interface(umidi->dev, intfd->bInterfaceNumber,
 +                        intfd->bAlternateSetting);
 +      snd_usbmidi_input_start(&umidi->list);
 +}
 +
 +static void substream_open(struct snd_rawmidi_substream *substream, int open)
 +{
 +      struct snd_usb_midi* umidi = substream->rmidi->private_data;
 +      struct snd_kcontrol *ctl;
 +
 +      mutex_lock(&umidi->mutex);
 +      if (open) {
 +              if (umidi->opened++ == 0 && umidi->roland_load_ctl) {
 +                      ctl = umidi->roland_load_ctl;
 +                      ctl->vd[0].access |= SNDRV_CTL_ELEM_ACCESS_INACTIVE;
 +                      snd_ctl_notify(umidi->card,
 +                                     SNDRV_CTL_EVENT_MASK_INFO, &ctl->id);
 +                      update_roland_altsetting(umidi);
 +              }
 +      } else {
 +              if (--umidi->opened == 0 && umidi->roland_load_ctl) {
 +                      ctl = umidi->roland_load_ctl;
 +                      ctl->vd[0].access &= ~SNDRV_CTL_ELEM_ACCESS_INACTIVE;
 +                      snd_ctl_notify(umidi->card,
 +                                     SNDRV_CTL_EVENT_MASK_INFO, &ctl->id);
 +              }
 +      }
 +      mutex_unlock(&umidi->mutex);
 +}
 +
 +static int snd_usbmidi_output_open(struct snd_rawmidi_substream *substream)
 +{
 +      struct snd_usb_midi* umidi = substream->rmidi->private_data;
 +      struct usbmidi_out_port* port = NULL;
 +      int i, j;
 +
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
 +              if (umidi->endpoints[i].out)
 +                      for (j = 0; j < 0x10; ++j)
 +                              if (umidi->endpoints[i].out->ports[j].substream == substream) {
 +                                      port = &umidi->endpoints[i].out->ports[j];
 +                                      break;
 +                              }
 +      if (!port) {
 +              snd_BUG();
 +              return -ENXIO;
 +      }
 +      substream->runtime->private_data = port;
 +      port->state = STATE_UNKNOWN;
 +      substream_open(substream, 1);
 +      return 0;
 +}
 +
 +static int snd_usbmidi_output_close(struct snd_rawmidi_substream *substream)
 +{
 +      substream_open(substream, 0);
 +      return 0;
 +}
 +
 +static void snd_usbmidi_output_trigger(struct snd_rawmidi_substream *substream, int up)
 +{
 +      struct usbmidi_out_port* port = (struct usbmidi_out_port*)substream->runtime->private_data;
 +
 +      port->active = up;
 +      if (up) {
 +              if (port->ep->umidi->disconnected) {
 +                      /* gobble up remaining bytes to prevent wait in
 +                       * snd_rawmidi_drain_output */
 +                      while (!snd_rawmidi_transmit_empty(substream))
 +                              snd_rawmidi_transmit_ack(substream, 1);
 +                      return;
 +              }
 +              tasklet_schedule(&port->ep->tasklet);
 +      }
 +}
 +
 +static void snd_usbmidi_output_drain(struct snd_rawmidi_substream *substream)
 +{
 +      struct usbmidi_out_port* port = substream->runtime->private_data;
 +      struct snd_usb_midi_out_endpoint *ep = port->ep;
 +      unsigned int drain_urbs;
 +      DEFINE_WAIT(wait);
 +      long timeout = msecs_to_jiffies(50);
 +
 +      if (ep->umidi->disconnected)
 +              return;
 +      /*
 +       * The substream buffer is empty, but some data might still be in the
 +       * currently active URBs, so we have to wait for those to complete.
 +       */
 +      spin_lock_irq(&ep->buffer_lock);
 +      drain_urbs = ep->active_urbs;
 +      if (drain_urbs) {
 +              ep->drain_urbs |= drain_urbs;
 +              do {
 +                      prepare_to_wait(&ep->drain_wait, &wait,
 +                                      TASK_UNINTERRUPTIBLE);
 +                      spin_unlock_irq(&ep->buffer_lock);
 +                      timeout = schedule_timeout(timeout);
 +                      spin_lock_irq(&ep->buffer_lock);
 +                      drain_urbs &= ep->drain_urbs;
 +              } while (drain_urbs && timeout);
 +              finish_wait(&ep->drain_wait, &wait);
 +      }
 +      spin_unlock_irq(&ep->buffer_lock);
 +}
 +
 +static int snd_usbmidi_input_open(struct snd_rawmidi_substream *substream)
 +{
 +      substream_open(substream, 1);
 +      return 0;
 +}
 +
 +static int snd_usbmidi_input_close(struct snd_rawmidi_substream *substream)
 +{
 +      substream_open(substream, 0);
 +      return 0;
 +}
 +
 +static void snd_usbmidi_input_trigger(struct snd_rawmidi_substream *substream, int up)
 +{
 +      struct snd_usb_midi* umidi = substream->rmidi->private_data;
 +
 +      if (up)
 +              set_bit(substream->number, &umidi->input_triggered);
 +      else
 +              clear_bit(substream->number, &umidi->input_triggered);
 +}
 +
 +static struct snd_rawmidi_ops snd_usbmidi_output_ops = {
 +      .open = snd_usbmidi_output_open,
 +      .close = snd_usbmidi_output_close,
 +      .trigger = snd_usbmidi_output_trigger,
 +      .drain = snd_usbmidi_output_drain,
 +};
 +
 +static struct snd_rawmidi_ops snd_usbmidi_input_ops = {
 +      .open = snd_usbmidi_input_open,
 +      .close = snd_usbmidi_input_close,
 +      .trigger = snd_usbmidi_input_trigger
 +};
 +
 +static void free_urb_and_buffer(struct snd_usb_midi *umidi, struct urb *urb,
 +                              unsigned int buffer_length)
 +{
-       usb_buffer_free(umidi->dev, buffer_length,
-                       urb->transfer_buffer, urb->transfer_dma);
++      usb_free_coherent(umidi->dev, buffer_length,
++                        urb->transfer_buffer, urb->transfer_dma);
 +      usb_free_urb(urb);
 +}
 +
 +/*
 + * Frees an input endpoint.
 + * May be called when ep hasn't been initialized completely.
 + */
 +static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep)
 +{
 +      unsigned int i;
 +
 +      for (i = 0; i < INPUT_URBS; ++i)
 +              if (ep->urbs[i])
 +                      free_urb_and_buffer(ep->umidi, ep->urbs[i],
 +                                          ep->urbs[i]->transfer_buffer_length);
 +      kfree(ep);
 +}
 +
 +/*
 + * Creates an input endpoint.
 + */
 +static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi,
 +                                        struct snd_usb_midi_endpoint_info* ep_info,
 +                                        struct snd_usb_midi_endpoint* rep)
 +{
 +      struct snd_usb_midi_in_endpoint* ep;
 +      void* buffer;
 +      unsigned int pipe;
 +      int length;
 +      unsigned int i;
 +
 +      rep->in = NULL;
 +      ep = kzalloc(sizeof(*ep), GFP_KERNEL);
 +      if (!ep)
 +              return -ENOMEM;
 +      ep->umidi = umidi;
 +
 +      for (i = 0; i < INPUT_URBS; ++i) {
 +              ep->urbs[i] = usb_alloc_urb(0, GFP_KERNEL);
 +              if (!ep->urbs[i]) {
 +                      snd_usbmidi_in_endpoint_delete(ep);
 +                      return -ENOMEM;
 +              }
 +      }
 +      if (ep_info->in_interval)
 +              pipe = usb_rcvintpipe(umidi->dev, ep_info->in_ep);
 +      else
 +              pipe = usb_rcvbulkpipe(umidi->dev, ep_info->in_ep);
 +      length = usb_maxpacket(umidi->dev, pipe, 0);
 +      for (i = 0; i < INPUT_URBS; ++i) {
-               buffer = usb_buffer_alloc(umidi->dev, length, GFP_KERNEL,
-                                         &ep->urbs[i]->transfer_dma);
++              buffer = usb_alloc_coherent(umidi->dev, length, GFP_KERNEL,
++                                          &ep->urbs[i]->transfer_dma);
 +              if (!buffer) {
 +                      snd_usbmidi_in_endpoint_delete(ep);
 +                      return -ENOMEM;
 +              }
 +              if (ep_info->in_interval)
 +                      usb_fill_int_urb(ep->urbs[i], umidi->dev,
 +                                       pipe, buffer, length,
 +                                       snd_usbmidi_in_urb_complete,
 +                                       ep, ep_info->in_interval);
 +              else
 +                      usb_fill_bulk_urb(ep->urbs[i], umidi->dev,
 +                                        pipe, buffer, length,
 +                                        snd_usbmidi_in_urb_complete, ep);
 +              ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
 +      }
 +
 +      rep->in = ep;
 +      return 0;
 +}
 +
 +/*
 + * Frees an output endpoint.
 + * May be called when ep hasn't been initialized completely.
 + */
 +static void snd_usbmidi_out_endpoint_clear(struct snd_usb_midi_out_endpoint *ep)
 +{
 +      unsigned int i;
 +
 +      for (i = 0; i < OUTPUT_URBS; ++i)
 +              if (ep->urbs[i].urb) {
 +                      free_urb_and_buffer(ep->umidi, ep->urbs[i].urb,
 +                                          ep->max_transfer);
 +                      ep->urbs[i].urb = NULL;
 +              }
 +}
 +
 +static void snd_usbmidi_out_endpoint_delete(struct snd_usb_midi_out_endpoint *ep)
 +{
 +      snd_usbmidi_out_endpoint_clear(ep);
 +      kfree(ep);
 +}
 +
 +/*
 + * Creates an output endpoint, and initializes output ports.
 + */
 +static int snd_usbmidi_out_endpoint_create(struct snd_usb_midi* umidi,
 +                                         struct snd_usb_midi_endpoint_info* ep_info,
 +                                         struct snd_usb_midi_endpoint* rep)
 +{
 +      struct snd_usb_midi_out_endpoint* ep;
 +      unsigned int i;
 +      unsigned int pipe;
 +      void* buffer;
 +
 +      rep->out = NULL;
 +      ep = kzalloc(sizeof(*ep), GFP_KERNEL);
 +      if (!ep)
 +              return -ENOMEM;
 +      ep->umidi = umidi;
 +
 +      for (i = 0; i < OUTPUT_URBS; ++i) {
 +              ep->urbs[i].urb = usb_alloc_urb(0, GFP_KERNEL);
 +              if (!ep->urbs[i].urb) {
 +                      snd_usbmidi_out_endpoint_delete(ep);
 +                      return -ENOMEM;
 +              }
 +              ep->urbs[i].ep = ep;
 +      }
 +      if (ep_info->out_interval)
 +              pipe = usb_sndintpipe(umidi->dev, ep_info->out_ep);
 +      else
 +              pipe = usb_sndbulkpipe(umidi->dev, ep_info->out_ep);
 +      switch (umidi->usb_id) {
 +      default:
 +              ep->max_transfer = usb_maxpacket(umidi->dev, pipe, 1);
 +              break;
 +              /*
 +               * Various chips declare a packet size larger than 4 bytes, but
 +               * do not actually work with larger packets:
 +               */
 +      case USB_ID(0x0a92, 0x1020): /* ESI M4U */
 +      case USB_ID(0x1430, 0x474b): /* RedOctane GH MIDI INTERFACE */
 +      case USB_ID(0x15ca, 0x0101): /* Textech USB Midi Cable */
 +      case USB_ID(0x15ca, 0x1806): /* Textech USB Midi Cable */
 +      case USB_ID(0x1a86, 0x752d): /* QinHeng CH345 "USB2.0-MIDI" */
 +              ep->max_transfer = 4;
 +              break;
 +      }
 +      for (i = 0; i < OUTPUT_URBS; ++i) {
-               buffer = usb_buffer_alloc(umidi->dev,
-                                         ep->max_transfer, GFP_KERNEL,
-                                         &ep->urbs[i].urb->transfer_dma);
++              buffer = usb_alloc_coherent(umidi->dev,
++                                          ep->max_transfer, GFP_KERNEL,
++                                          &ep->urbs[i].urb->transfer_dma);
 +              if (!buffer) {
 +                      snd_usbmidi_out_endpoint_delete(ep);
 +                      return -ENOMEM;
 +              }
 +              if (ep_info->out_interval)
 +                      usb_fill_int_urb(ep->urbs[i].urb, umidi->dev,
 +                                       pipe, buffer, ep->max_transfer,
 +                                       snd_usbmidi_out_urb_complete,
 +                                       &ep->urbs[i], ep_info->out_interval);
 +              else
 +                      usb_fill_bulk_urb(ep->urbs[i].urb, umidi->dev,
 +                                        pipe, buffer, ep->max_transfer,
 +                                        snd_usbmidi_out_urb_complete,
 +                                        &ep->urbs[i]);
 +              ep->urbs[i].urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP;
 +      }
 +
 +      spin_lock_init(&ep->buffer_lock);
 +      tasklet_init(&ep->tasklet, snd_usbmidi_out_tasklet, (unsigned long)ep);
 +      init_waitqueue_head(&ep->drain_wait);
 +
 +      for (i = 0; i < 0x10; ++i)
 +              if (ep_info->out_cables & (1 << i)) {
 +                      ep->ports[i].ep = ep;
 +                      ep->ports[i].cable = i << 4;
 +              }
 +
 +      if (umidi->usb_protocol_ops->init_out_endpoint)
 +              umidi->usb_protocol_ops->init_out_endpoint(ep);
 +
 +      rep->out = ep;
 +      return 0;
 +}
 +
 +/*
 + * Frees everything.
 + */
 +static void snd_usbmidi_free(struct snd_usb_midi* umidi)
 +{
 +      int i;
 +
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
 +              struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
 +              if (ep->out)
 +                      snd_usbmidi_out_endpoint_delete(ep->out);
 +              if (ep->in)
 +                      snd_usbmidi_in_endpoint_delete(ep->in);
 +      }
 +      mutex_destroy(&umidi->mutex);
 +      kfree(umidi);
 +}
 +
 +/*
 + * Unlinks all URBs (must be done before the usb_device is deleted).
 + */
 +void snd_usbmidi_disconnect(struct list_head* p)
 +{
 +      struct snd_usb_midi* umidi;
 +      unsigned int i, j;
 +
 +      umidi = list_entry(p, struct snd_usb_midi, list);
 +      /*
 +       * an URB's completion handler may start the timer and
 +       * a timer may submit an URB. To reliably break the cycle
 +       * a flag under lock must be used
 +       */
 +      spin_lock_irq(&umidi->disc_lock);
 +      umidi->disconnected = 1;
 +      spin_unlock_irq(&umidi->disc_lock);
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
 +              struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
 +              if (ep->out)
 +                      tasklet_kill(&ep->out->tasklet);
 +              if (ep->out) {
 +                      for (j = 0; j < OUTPUT_URBS; ++j)
 +                              usb_kill_urb(ep->out->urbs[j].urb);
 +                      if (umidi->usb_protocol_ops->finish_out_endpoint)
 +                              umidi->usb_protocol_ops->finish_out_endpoint(ep->out);
 +                      ep->out->active_urbs = 0;
 +                      if (ep->out->drain_urbs) {
 +                              ep->out->drain_urbs = 0;
 +                              wake_up(&ep->out->drain_wait);
 +                      }
 +              }
 +              if (ep->in)
 +                      for (j = 0; j < INPUT_URBS; ++j)
 +                              usb_kill_urb(ep->in->urbs[j]);
 +              /* free endpoints here; later call can result in Oops */
 +              if (ep->out)
 +                      snd_usbmidi_out_endpoint_clear(ep->out);
 +              if (ep->in) {
 +                      snd_usbmidi_in_endpoint_delete(ep->in);
 +                      ep->in = NULL;
 +              }
 +      }
 +      del_timer_sync(&umidi->error_timer);
 +}
 +
 +static void snd_usbmidi_rawmidi_free(struct snd_rawmidi *rmidi)
 +{
 +      struct snd_usb_midi* umidi = rmidi->private_data;
 +      snd_usbmidi_free(umidi);
 +}
 +
 +static struct snd_rawmidi_substream *snd_usbmidi_find_substream(struct snd_usb_midi* umidi,
 +                                                         int stream, int number)
 +{
 +      struct list_head* list;
 +
 +      list_for_each(list, &umidi->rmidi->streams[stream].substreams) {
 +              struct snd_rawmidi_substream *substream = list_entry(list, struct snd_rawmidi_substream, list);
 +              if (substream->number == number)
 +                      return substream;
 +      }
 +      return NULL;
 +}
 +
 +/*
 + * This list specifies names for ports that do not fit into the standard
 + * "(product) MIDI (n)" schema because they aren't external MIDI ports,
 + * such as internal control or synthesizer ports.
 + */
 +static struct port_info {
 +      u32 id;
 +      short int port;
 +      short int voices;
 +      const char *name;
 +      unsigned int seq_flags;
 +} snd_usbmidi_port_info[] = {
 +#define PORT_INFO(vendor, product, num, name_, voices_, flags) \
 +      { .id = USB_ID(vendor, product), \
 +        .port = num, .voices = voices_, \
 +        .name = name_, .seq_flags = flags }
 +#define EXTERNAL_PORT(vendor, product, num, name) \
 +      PORT_INFO(vendor, product, num, name, 0, \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
 +                SNDRV_SEQ_PORT_TYPE_HARDWARE | \
 +                SNDRV_SEQ_PORT_TYPE_PORT)
 +#define CONTROL_PORT(vendor, product, num, name) \
 +      PORT_INFO(vendor, product, num, name, 0, \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
 +                SNDRV_SEQ_PORT_TYPE_HARDWARE)
 +#define ROLAND_SYNTH_PORT(vendor, product, num, name, voices) \
 +      PORT_INFO(vendor, product, num, name, voices, \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
 +                SNDRV_SEQ_PORT_TYPE_HARDWARE | \
 +                SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
 +#define SOUNDCANVAS_PORT(vendor, product, num, name, voices) \
 +      PORT_INFO(vendor, product, num, name, voices, \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GM | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GM2 | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_GS | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_XG | \
 +                SNDRV_SEQ_PORT_TYPE_MIDI_MT32 | \
 +                SNDRV_SEQ_PORT_TYPE_HARDWARE | \
 +                SNDRV_SEQ_PORT_TYPE_SYNTHESIZER)
 +      /* Roland UA-100 */
 +      CONTROL_PORT(0x0582, 0x0000, 2, "%s Control"),
 +      /* Roland SC-8850 */
 +      SOUNDCANVAS_PORT(0x0582, 0x0003, 0, "%s Part A", 128),
 +      SOUNDCANVAS_PORT(0x0582, 0x0003, 1, "%s Part B", 128),
 +      SOUNDCANVAS_PORT(0x0582, 0x0003, 2, "%s Part C", 128),
 +      SOUNDCANVAS_PORT(0x0582, 0x0003, 3, "%s Part D", 128),
 +      EXTERNAL_PORT(0x0582, 0x0003, 4, "%s MIDI 1"),
 +      EXTERNAL_PORT(0x0582, 0x0003, 5, "%s MIDI 2"),
 +      /* Roland U-8 */
 +      EXTERNAL_PORT(0x0582, 0x0004, 0, "%s MIDI"),
 +      CONTROL_PORT(0x0582, 0x0004, 1, "%s Control"),
 +      /* Roland SC-8820 */
 +      SOUNDCANVAS_PORT(0x0582, 0x0007, 0, "%s Part A", 64),
 +      SOUNDCANVAS_PORT(0x0582, 0x0007, 1, "%s Part B", 64),
 +      EXTERNAL_PORT(0x0582, 0x0007, 2, "%s MIDI"),
 +      /* Roland SK-500 */
 +      SOUNDCANVAS_PORT(0x0582, 0x000b, 0, "%s Part A", 64),
 +      SOUNDCANVAS_PORT(0x0582, 0x000b, 1, "%s Part B", 64),
 +      EXTERNAL_PORT(0x0582, 0x000b, 2, "%s MIDI"),
 +      /* Roland SC-D70 */
 +      SOUNDCANVAS_PORT(0x0582, 0x000c, 0, "%s Part A", 64),
 +      SOUNDCANVAS_PORT(0x0582, 0x000c, 1, "%s Part B", 64),
 +      EXTERNAL_PORT(0x0582, 0x000c, 2, "%s MIDI"),
 +      /* Edirol UM-880 */
 +      CONTROL_PORT(0x0582, 0x0014, 8, "%s Control"),
 +      /* Edirol SD-90 */
 +      ROLAND_SYNTH_PORT(0x0582, 0x0016, 0, "%s Part A", 128),
 +      ROLAND_SYNTH_PORT(0x0582, 0x0016, 1, "%s Part B", 128),
 +      EXTERNAL_PORT(0x0582, 0x0016, 2, "%s MIDI 1"),
 +      EXTERNAL_PORT(0x0582, 0x0016, 3, "%s MIDI 2"),
 +      /* Edirol UM-550 */
 +      CONTROL_PORT(0x0582, 0x0023, 5, "%s Control"),
 +      /* Edirol SD-20 */
 +      ROLAND_SYNTH_PORT(0x0582, 0x0027, 0, "%s Part A", 64),
 +      ROLAND_SYNTH_PORT(0x0582, 0x0027, 1, "%s Part B", 64),
 +      EXTERNAL_PORT(0x0582, 0x0027, 2, "%s MIDI"),
 +      /* Edirol SD-80 */
 +      ROLAND_SYNTH_PORT(0x0582, 0x0029, 0, "%s Part A", 128),
 +      ROLAND_SYNTH_PORT(0x0582, 0x0029, 1, "%s Part B", 128),
 +      EXTERNAL_PORT(0x0582, 0x0029, 2, "%s MIDI 1"),
 +      EXTERNAL_PORT(0x0582, 0x0029, 3, "%s MIDI 2"),
 +      /* Edirol UA-700 */
 +      EXTERNAL_PORT(0x0582, 0x002b, 0, "%s MIDI"),
 +      CONTROL_PORT(0x0582, 0x002b, 1, "%s Control"),
 +      /* Roland VariOS */
 +      EXTERNAL_PORT(0x0582, 0x002f, 0, "%s MIDI"),
 +      EXTERNAL_PORT(0x0582, 0x002f, 1, "%s External MIDI"),
 +      EXTERNAL_PORT(0x0582, 0x002f, 2, "%s Sync"),
 +      /* Edirol PCR */
 +      EXTERNAL_PORT(0x0582, 0x0033, 0, "%s MIDI"),
 +      EXTERNAL_PORT(0x0582, 0x0033, 1, "%s 1"),
 +      EXTERNAL_PORT(0x0582, 0x0033, 2, "%s 2"),
 +      /* BOSS GS-10 */
 +      EXTERNAL_PORT(0x0582, 0x003b, 0, "%s MIDI"),
 +      CONTROL_PORT(0x0582, 0x003b, 1, "%s Control"),
 +      /* Edirol UA-1000 */
 +      EXTERNAL_PORT(0x0582, 0x0044, 0, "%s MIDI"),
 +      CONTROL_PORT(0x0582, 0x0044, 1, "%s Control"),
 +      /* Edirol UR-80 */
 +      EXTERNAL_PORT(0x0582, 0x0048, 0, "%s MIDI"),
 +      EXTERNAL_PORT(0x0582, 0x0048, 1, "%s 1"),
 +      EXTERNAL_PORT(0x0582, 0x0048, 2, "%s 2"),
 +      /* Edirol PCR-A */
 +      EXTERNAL_PORT(0x0582, 0x004d, 0, "%s MIDI"),
 +      EXTERNAL_PORT(0x0582, 0x004d, 1, "%s 1"),
 +      EXTERNAL_PORT(0x0582, 0x004d, 2, "%s 2"),
 +      /* Edirol UM-3EX */
 +      CONTROL_PORT(0x0582, 0x009a, 3, "%s Control"),
 +      /* M-Audio MidiSport 8x8 */
 +      CONTROL_PORT(0x0763, 0x1031, 8, "%s Control"),
 +      CONTROL_PORT(0x0763, 0x1033, 8, "%s Control"),
 +      /* MOTU Fastlane */
 +      EXTERNAL_PORT(0x07fd, 0x0001, 0, "%s MIDI A"),
 +      EXTERNAL_PORT(0x07fd, 0x0001, 1, "%s MIDI B"),
 +      /* Emagic Unitor8/AMT8/MT4 */
 +      EXTERNAL_PORT(0x086a, 0x0001, 8, "%s Broadcast"),
 +      EXTERNAL_PORT(0x086a, 0x0002, 8, "%s Broadcast"),
 +      EXTERNAL_PORT(0x086a, 0x0003, 4, "%s Broadcast"),
 +      /* Access Music Virus TI */
 +      EXTERNAL_PORT(0x133e, 0x0815, 0, "%s MIDI"),
 +      PORT_INFO(0x133e, 0x0815, 1, "%s Synth", 0,
 +              SNDRV_SEQ_PORT_TYPE_MIDI_GENERIC |
 +              SNDRV_SEQ_PORT_TYPE_HARDWARE |
 +              SNDRV_SEQ_PORT_TYPE_SYNTHESIZER),
 +};
 +
 +static struct port_info *find_port_info(struct snd_usb_midi* umidi, int number)
 +{
 +      int i;
 +
 +      for (i = 0; i < ARRAY_SIZE(snd_usbmidi_port_info); ++i) {
 +              if (snd_usbmidi_port_info[i].id == umidi->usb_id &&
 +                  snd_usbmidi_port_info[i].port == number)
 +                      return &snd_usbmidi_port_info[i];
 +      }
 +      return NULL;
 +}
 +
 +static void snd_usbmidi_get_port_info(struct snd_rawmidi *rmidi, int number,
 +                                    struct snd_seq_port_info *seq_port_info)
 +{
 +      struct snd_usb_midi *umidi = rmidi->private_data;
 +      struct port_info *port_info;
 +
 +      /* TODO: read port flags from descriptors */
 +      port_info = find_port_info(umidi, number);
 +      if (port_info) {
 +              seq_port_info->type = port_info->seq_flags;
 +              seq_port_info->midi_voices = port_info->voices;
 +      }
 +}
 +
 +static void snd_usbmidi_init_substream(struct snd_usb_midi* umidi,
 +                                     int stream, int number,
 +                                     struct snd_rawmidi_substream ** rsubstream)
 +{
 +      struct port_info *port_info;
 +      const char *name_format;
 +
 +      struct snd_rawmidi_substream *substream = snd_usbmidi_find_substream(umidi, stream, number);
 +      if (!substream) {
 +              snd_printd(KERN_ERR "substream %d:%d not found\n", stream, number);
 +              return;
 +      }
 +
 +      /* TODO: read port name from jack descriptor */
 +      port_info = find_port_info(umidi, number);
 +      name_format = port_info ? port_info->name : "%s MIDI %d";
 +      snprintf(substream->name, sizeof(substream->name),
 +               name_format, umidi->card->shortname, number + 1);
 +
 +      *rsubstream = substream;
 +}
 +
 +/*
 + * Creates the endpoints and their ports.
 + */
 +static int snd_usbmidi_create_endpoints(struct snd_usb_midi* umidi,
 +                                      struct snd_usb_midi_endpoint_info* endpoints)
 +{
 +      int i, j, err;
 +      int out_ports = 0, in_ports = 0;
 +
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
 +              if (endpoints[i].out_cables) {
 +                      err = snd_usbmidi_out_endpoint_create(umidi, &endpoints[i],
 +                                                            &umidi->endpoints[i]);
 +                      if (err < 0)
 +                              return err;
 +              }
 +              if (endpoints[i].in_cables) {
 +                      err = snd_usbmidi_in_endpoint_create(umidi, &endpoints[i],
 +                                                           &umidi->endpoints[i]);
 +                      if (err < 0)
 +                              return err;
 +              }
 +
 +              for (j = 0; j < 0x10; ++j) {
 +                      if (endpoints[i].out_cables & (1 << j)) {
 +                              snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, out_ports,
 +                                                         &umidi->endpoints[i].out->ports[j].substream);
 +                              ++out_ports;
 +                      }
 +                      if (endpoints[i].in_cables & (1 << j)) {
 +                              snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, in_ports,
 +                                                         &umidi->endpoints[i].in->ports[j].substream);
 +                              ++in_ports;
 +                      }
 +              }
 +      }
 +      snd_printdd(KERN_INFO "created %d output and %d input ports\n",
 +                  out_ports, in_ports);
 +      return 0;
 +}
 +
 +/*
 + * Returns MIDIStreaming device capabilities.
 + */
 +static int snd_usbmidi_get_ms_info(struct snd_usb_midi* umidi,
 +                                 struct snd_usb_midi_endpoint_info* endpoints)
 +{
 +      struct usb_interface* intf;
 +      struct usb_host_interface *hostif;
 +      struct usb_interface_descriptor* intfd;
 +      struct usb_ms_header_descriptor* ms_header;
 +      struct usb_host_endpoint *hostep;
 +      struct usb_endpoint_descriptor* ep;
 +      struct usb_ms_endpoint_descriptor* ms_ep;
 +      int i, epidx;
 +
 +      intf = umidi->iface;
 +      if (!intf)
 +              return -ENXIO;
 +      hostif = &intf->altsetting[0];
 +      intfd = get_iface_desc(hostif);
 +      ms_header = (struct usb_ms_header_descriptor*)hostif->extra;
 +      if (hostif->extralen >= 7 &&
 +          ms_header->bLength >= 7 &&
 +          ms_header->bDescriptorType == USB_DT_CS_INTERFACE &&
 +          ms_header->bDescriptorSubtype == UAC_HEADER)
 +              snd_printdd(KERN_INFO "MIDIStreaming version %02x.%02x\n",
 +                          ms_header->bcdMSC[1], ms_header->bcdMSC[0]);
 +      else
 +              snd_printk(KERN_WARNING "MIDIStreaming interface descriptor not found\n");
 +
 +      epidx = 0;
 +      for (i = 0; i < intfd->bNumEndpoints; ++i) {
 +              hostep = &hostif->endpoint[i];
 +              ep = get_ep_desc(hostep);
 +              if (!usb_endpoint_xfer_bulk(ep) && !usb_endpoint_xfer_int(ep))
 +                      continue;
 +              ms_ep = (struct usb_ms_endpoint_descriptor*)hostep->extra;
 +              if (hostep->extralen < 4 ||
 +                  ms_ep->bLength < 4 ||
 +                  ms_ep->bDescriptorType != USB_DT_CS_ENDPOINT ||
 +                  ms_ep->bDescriptorSubtype != UAC_MS_GENERAL)
 +                      continue;
 +              if (usb_endpoint_dir_out(ep)) {
 +                      if (endpoints[epidx].out_ep) {
 +                              if (++epidx >= MIDI_MAX_ENDPOINTS) {
 +                                      snd_printk(KERN_WARNING "too many endpoints\n");
 +                                      break;
 +                              }
 +                      }
 +                      endpoints[epidx].out_ep = usb_endpoint_num(ep);
 +                      if (usb_endpoint_xfer_int(ep))
 +                              endpoints[epidx].out_interval = ep->bInterval;
 +                      else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW)
 +                              /*
 +                               * Low speed bulk transfers don't exist, so
 +                               * force interrupt transfers for devices like
 +                               * ESI MIDI Mate that try to use them anyway.
 +                               */
 +                              endpoints[epidx].out_interval = 1;
 +                      endpoints[epidx].out_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
 +                      snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
 +                                  ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
 +              } else {
 +                      if (endpoints[epidx].in_ep) {
 +                              if (++epidx >= MIDI_MAX_ENDPOINTS) {
 +                                      snd_printk(KERN_WARNING "too many endpoints\n");
 +                                      break;
 +                              }
 +                      }
 +                      endpoints[epidx].in_ep = usb_endpoint_num(ep);
 +                      if (usb_endpoint_xfer_int(ep))
 +                              endpoints[epidx].in_interval = ep->bInterval;
 +                      else if (snd_usb_get_speed(umidi->dev) == USB_SPEED_LOW)
 +                              endpoints[epidx].in_interval = 1;
 +                      endpoints[epidx].in_cables = (1 << ms_ep->bNumEmbMIDIJack) - 1;
 +                      snd_printdd(KERN_INFO "EP %02X: %d jack(s)\n",
 +                                  ep->bEndpointAddress, ms_ep->bNumEmbMIDIJack);
 +              }
 +      }
 +      return 0;
 +}
 +
 +static int roland_load_info(struct snd_kcontrol *kcontrol,
 +                          struct snd_ctl_elem_info *info)
 +{
 +      static const char *const names[] = { "High Load", "Light Load" };
 +
 +      info->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 +      info->count = 1;
 +      info->value.enumerated.items = 2;
 +      if (info->value.enumerated.item > 1)
 +              info->value.enumerated.item = 1;
 +      strcpy(info->value.enumerated.name, names[info->value.enumerated.item]);
 +      return 0;
 +}
 +
 +static int roland_load_get(struct snd_kcontrol *kcontrol,
 +                         struct snd_ctl_elem_value *value)
 +{
 +      value->value.enumerated.item[0] = kcontrol->private_value;
 +      return 0;
 +}
 +
 +static int roland_load_put(struct snd_kcontrol *kcontrol,
 +                         struct snd_ctl_elem_value *value)
 +{
 +      struct snd_usb_midi* umidi = kcontrol->private_data;
 +      int changed;
 +
 +      if (value->value.enumerated.item[0] > 1)
 +              return -EINVAL;
 +      mutex_lock(&umidi->mutex);
 +      changed = value->value.enumerated.item[0] != kcontrol->private_value;
 +      if (changed)
 +              kcontrol->private_value = value->value.enumerated.item[0];
 +      mutex_unlock(&umidi->mutex);
 +      return changed;
 +}
 +
 +static struct snd_kcontrol_new roland_load_ctl = {
 +      .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 +      .name = "MIDI Input Mode",
 +      .info = roland_load_info,
 +      .get = roland_load_get,
 +      .put = roland_load_put,
 +      .private_value = 1,
 +};
 +
 +/*
 + * On Roland devices, use the second alternate setting to be able to use
 + * the interrupt input endpoint.
 + */
 +static void snd_usbmidi_switch_roland_altsetting(struct snd_usb_midi* umidi)
 +{
 +      struct usb_interface* intf;
 +      struct usb_host_interface *hostif;
 +      struct usb_interface_descriptor* intfd;
 +
 +      intf = umidi->iface;
 +      if (!intf || intf->num_altsetting != 2)
 +              return;
 +
 +      hostif = &intf->altsetting[1];
 +      intfd = get_iface_desc(hostif);
 +      if (intfd->bNumEndpoints != 2 ||
 +          (get_endpoint(hostif, 0)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_BULK ||
 +          (get_endpoint(hostif, 1)->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) != USB_ENDPOINT_XFER_INT)
 +              return;
 +
 +      snd_printdd(KERN_INFO "switching to altsetting %d with int ep\n",
 +                  intfd->bAlternateSetting);
 +      usb_set_interface(umidi->dev, intfd->bInterfaceNumber,
 +                        intfd->bAlternateSetting);
 +
 +      umidi->roland_load_ctl = snd_ctl_new1(&roland_load_ctl, umidi);
 +      if (snd_ctl_add(umidi->card, umidi->roland_load_ctl) < 0)
 +              umidi->roland_load_ctl = NULL;
 +}
 +
 +/*
 + * Try to find any usable endpoints in the interface.
 + */
 +static int snd_usbmidi_detect_endpoints(struct snd_usb_midi* umidi,
 +                                      struct snd_usb_midi_endpoint_info* endpoint,
 +                                      int max_endpoints)
 +{
 +      struct usb_interface* intf;
 +      struct usb_host_interface *hostif;
 +      struct usb_interface_descriptor* intfd;
 +      struct usb_endpoint_descriptor* epd;
 +      int i, out_eps = 0, in_eps = 0;
 +
 +      if (USB_ID_VENDOR(umidi->usb_id) == 0x0582)
 +              snd_usbmidi_switch_roland_altsetting(umidi);
 +
 +      if (endpoint[0].out_ep || endpoint[0].in_ep)
 +              return 0;       
 +
 +      intf = umidi->iface;
 +      if (!intf || intf->num_altsetting < 1)
 +              return -ENOENT;
 +      hostif = intf->cur_altsetting;
 +      intfd = get_iface_desc(hostif);
 +
 +      for (i = 0; i < intfd->bNumEndpoints; ++i) {
 +              epd = get_endpoint(hostif, i);
 +              if (!usb_endpoint_xfer_bulk(epd) &&
 +                  !usb_endpoint_xfer_int(epd))
 +                      continue;
 +              if (out_eps < max_endpoints &&
 +                  usb_endpoint_dir_out(epd)) {
 +                      endpoint[out_eps].out_ep = usb_endpoint_num(epd);
 +                      if (usb_endpoint_xfer_int(epd))
 +                              endpoint[out_eps].out_interval = epd->bInterval;
 +                      ++out_eps;
 +              }
 +              if (in_eps < max_endpoints &&
 +                  usb_endpoint_dir_in(epd)) {
 +                      endpoint[in_eps].in_ep = usb_endpoint_num(epd);
 +                      if (usb_endpoint_xfer_int(epd))
 +                              endpoint[in_eps].in_interval = epd->bInterval;
 +                      ++in_eps;
 +              }
 +      }
 +      return (out_eps || in_eps) ? 0 : -ENOENT;
 +}
 +
 +/*
 + * Detects the endpoints for one-port-per-endpoint protocols.
 + */
 +static int snd_usbmidi_detect_per_port_endpoints(struct snd_usb_midi* umidi,
 +                                               struct snd_usb_midi_endpoint_info* endpoints)
 +{
 +      int err, i;
 +      
 +      err = snd_usbmidi_detect_endpoints(umidi, endpoints, MIDI_MAX_ENDPOINTS);
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
 +              if (endpoints[i].out_ep)
 +                      endpoints[i].out_cables = 0x0001;
 +              if (endpoints[i].in_ep)
 +                      endpoints[i].in_cables = 0x0001;
 +      }
 +      return err;
 +}
 +
 +/*
 + * Detects the endpoints and ports of Yamaha devices.
 + */
 +static int snd_usbmidi_detect_yamaha(struct snd_usb_midi* umidi,
 +                                   struct snd_usb_midi_endpoint_info* endpoint)
 +{
 +      struct usb_interface* intf;
 +      struct usb_host_interface *hostif;
 +      struct usb_interface_descriptor* intfd;
 +      uint8_t* cs_desc;
 +
 +      intf = umidi->iface;
 +      if (!intf)
 +              return -ENOENT;
 +      hostif = intf->altsetting;
 +      intfd = get_iface_desc(hostif);
 +      if (intfd->bNumEndpoints < 1)
 +              return -ENOENT;
 +
 +      /*
 +       * For each port there is one MIDI_IN/OUT_JACK descriptor, not
 +       * necessarily with any useful contents.  So simply count 'em.
 +       */
 +      for (cs_desc = hostif->extra;
 +           cs_desc < hostif->extra + hostif->extralen && cs_desc[0] >= 2;
 +           cs_desc += cs_desc[0]) {
 +              if (cs_desc[1] == USB_DT_CS_INTERFACE) {
 +                      if (cs_desc[2] == UAC_MIDI_IN_JACK)
 +                              endpoint->in_cables = (endpoint->in_cables << 1) | 1;
 +                      else if (cs_desc[2] == UAC_MIDI_OUT_JACK)
 +                              endpoint->out_cables = (endpoint->out_cables << 1) | 1;
 +              }
 +      }
 +      if (!endpoint->in_cables && !endpoint->out_cables)
 +              return -ENOENT;
 +
 +      return snd_usbmidi_detect_endpoints(umidi, endpoint, 1);
 +}
 +
 +/*
 + * Creates the endpoints and their ports for Midiman devices.
 + */
 +static int snd_usbmidi_create_endpoints_midiman(struct snd_usb_midi* umidi,
 +                                              struct snd_usb_midi_endpoint_info* endpoint)
 +{
 +      struct snd_usb_midi_endpoint_info ep_info;
 +      struct usb_interface* intf;
 +      struct usb_host_interface *hostif;
 +      struct usb_interface_descriptor* intfd;
 +      struct usb_endpoint_descriptor* epd;
 +      int cable, err;
 +
 +      intf = umidi->iface;
 +      if (!intf)
 +              return -ENOENT;
 +      hostif = intf->altsetting;
 +      intfd = get_iface_desc(hostif);
 +      /*
 +       * The various MidiSport devices have more or less random endpoint
 +       * numbers, so we have to identify the endpoints by their index in
 +       * the descriptor array, like the driver for that other OS does.
 +       *
 +       * There is one interrupt input endpoint for all input ports, one
 +       * bulk output endpoint for even-numbered ports, and one for odd-
 +       * numbered ports.  Both bulk output endpoints have corresponding
 +       * input bulk endpoints (at indices 1 and 3) which aren't used.
 +       */
 +      if (intfd->bNumEndpoints < (endpoint->out_cables > 0x0001 ? 5 : 3)) {
 +              snd_printdd(KERN_ERR "not enough endpoints\n");
 +              return -ENOENT;
 +      }
 +
 +      epd = get_endpoint(hostif, 0);
 +      if (!usb_endpoint_dir_in(epd) || !usb_endpoint_xfer_int(epd)) {
 +              snd_printdd(KERN_ERR "endpoint[0] isn't interrupt\n");
 +              return -ENXIO;
 +      }
 +      epd = get_endpoint(hostif, 2);
 +      if (!usb_endpoint_dir_out(epd) || !usb_endpoint_xfer_bulk(epd)) {
 +              snd_printdd(KERN_ERR "endpoint[2] isn't bulk output\n");
 +              return -ENXIO;
 +      }
 +      if (endpoint->out_cables > 0x0001) {
 +              epd = get_endpoint(hostif, 4);
 +              if (!usb_endpoint_dir_out(epd) ||
 +                  !usb_endpoint_xfer_bulk(epd)) {
 +                      snd_printdd(KERN_ERR "endpoint[4] isn't bulk output\n");
 +                      return -ENXIO;
 +              }
 +      }
 +
 +      ep_info.out_ep = get_endpoint(hostif, 2)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 +      ep_info.out_interval = 0;
 +      ep_info.out_cables = endpoint->out_cables & 0x5555;
 +      err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
 +      if (err < 0)
 +              return err;
 +
 +      ep_info.in_ep = get_endpoint(hostif, 0)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 +      ep_info.in_interval = get_endpoint(hostif, 0)->bInterval;
 +      ep_info.in_cables = endpoint->in_cables;
 +      err = snd_usbmidi_in_endpoint_create(umidi, &ep_info, &umidi->endpoints[0]);
 +      if (err < 0)
 +              return err;
 +
 +      if (endpoint->out_cables > 0x0001) {
 +              ep_info.out_ep = get_endpoint(hostif, 4)->bEndpointAddress & USB_ENDPOINT_NUMBER_MASK;
 +              ep_info.out_cables = endpoint->out_cables & 0xaaaa;
 +              err = snd_usbmidi_out_endpoint_create(umidi, &ep_info, &umidi->endpoints[1]);
 +              if (err < 0)
 +                      return err;
 +      }
 +
 +      for (cable = 0; cable < 0x10; ++cable) {
 +              if (endpoint->out_cables & (1 << cable))
 +                      snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_OUTPUT, cable,
 +                                                 &umidi->endpoints[cable & 1].out->ports[cable].substream);
 +              if (endpoint->in_cables & (1 << cable))
 +                      snd_usbmidi_init_substream(umidi, SNDRV_RAWMIDI_STREAM_INPUT, cable,
 +                                                 &umidi->endpoints[0].in->ports[cable].substream);
 +      }
 +      return 0;
 +}
 +
 +static struct snd_rawmidi_global_ops snd_usbmidi_ops = {
 +      .get_port_info = snd_usbmidi_get_port_info,
 +};
 +
 +static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi,
 +                                    int out_ports, int in_ports)
 +{
 +      struct snd_rawmidi *rmidi;
 +      int err;
 +
 +      err = snd_rawmidi_new(umidi->card, "USB MIDI",
 +                            umidi->next_midi_device++,
 +                            out_ports, in_ports, &rmidi);
 +      if (err < 0)
 +              return err;
 +      strcpy(rmidi->name, umidi->card->shortname);
 +      rmidi->info_flags = SNDRV_RAWMIDI_INFO_OUTPUT |
 +                          SNDRV_RAWMIDI_INFO_INPUT |
 +                          SNDRV_RAWMIDI_INFO_DUPLEX;
 +      rmidi->ops = &snd_usbmidi_ops;
 +      rmidi->private_data = umidi;
 +      rmidi->private_free = snd_usbmidi_rawmidi_free;
 +      snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_OUTPUT, &snd_usbmidi_output_ops);
 +      snd_rawmidi_set_ops(rmidi, SNDRV_RAWMIDI_STREAM_INPUT, &snd_usbmidi_input_ops);
 +
 +      umidi->rmidi = rmidi;
 +      return 0;
 +}
 +
 +/*
 + * Temporarily stop input.
 + */
 +void snd_usbmidi_input_stop(struct list_head* p)
 +{
 +      struct snd_usb_midi* umidi;
 +      unsigned int i, j;
 +
 +      umidi = list_entry(p, struct snd_usb_midi, list);
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
 +              struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i];
 +              if (ep->in)
 +                      for (j = 0; j < INPUT_URBS; ++j)
 +                              usb_kill_urb(ep->in->urbs[j]);
 +      }
 +}
 +
 +static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep)
 +{
 +      unsigned int i;
 +
 +      if (!ep)
 +              return;
 +      for (i = 0; i < INPUT_URBS; ++i) {
 +              struct urb* urb = ep->urbs[i];
 +              urb->dev = ep->umidi->dev;
 +              snd_usbmidi_submit_urb(urb, GFP_KERNEL);
 +      }
 +}
 +
 +/*
 + * Resume input after a call to snd_usbmidi_input_stop().
 + */
 +void snd_usbmidi_input_start(struct list_head* p)
 +{
 +      struct snd_usb_midi* umidi;
 +      int i;
 +
 +      umidi = list_entry(p, struct snd_usb_midi, list);
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
 +              snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
 +}
 +
 +/*
 + * Creates and registers everything needed for a MIDI streaming interface.
 + */
 +int snd_usbmidi_create(struct snd_card *card,
 +                     struct usb_interface* iface,
 +                     struct list_head *midi_list,
 +                     const struct snd_usb_audio_quirk* quirk)
 +{
 +      struct snd_usb_midi* umidi;
 +      struct snd_usb_midi_endpoint_info endpoints[MIDI_MAX_ENDPOINTS];
 +      int out_ports, in_ports;
 +      int i, err;
 +
 +      umidi = kzalloc(sizeof(*umidi), GFP_KERNEL);
 +      if (!umidi)
 +              return -ENOMEM;
 +      umidi->dev = interface_to_usbdev(iface);
 +      umidi->card = card;
 +      umidi->iface = iface;
 +      umidi->quirk = quirk;
 +      umidi->usb_protocol_ops = &snd_usbmidi_standard_ops;
 +      init_timer(&umidi->error_timer);
 +      spin_lock_init(&umidi->disc_lock);
 +      mutex_init(&umidi->mutex);
 +      umidi->usb_id = USB_ID(le16_to_cpu(umidi->dev->descriptor.idVendor),
 +                             le16_to_cpu(umidi->dev->descriptor.idProduct));
 +      umidi->error_timer.function = snd_usbmidi_error_timer;
 +      umidi->error_timer.data = (unsigned long)umidi;
 +
 +      /* detect the endpoint(s) to use */
 +      memset(endpoints, 0, sizeof(endpoints));
 +      switch (quirk ? quirk->type : QUIRK_MIDI_STANDARD_INTERFACE) {
 +      case QUIRK_MIDI_STANDARD_INTERFACE:
 +              err = snd_usbmidi_get_ms_info(umidi, endpoints);
 +              if (umidi->usb_id == USB_ID(0x0763, 0x0150)) /* M-Audio Uno */
 +                      umidi->usb_protocol_ops =
 +                              &snd_usbmidi_maudio_broken_running_status_ops;
 +              break;
 +      case QUIRK_MIDI_US122L:
 +              umidi->usb_protocol_ops = &snd_usbmidi_122l_ops;
 +              /* fall through */
 +      case QUIRK_MIDI_FIXED_ENDPOINT:
 +              memcpy(&endpoints[0], quirk->data,
 +                     sizeof(struct snd_usb_midi_endpoint_info));
 +              err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
 +              break;
 +      case QUIRK_MIDI_YAMAHA:
 +              err = snd_usbmidi_detect_yamaha(umidi, &endpoints[0]);
 +              break;
 +      case QUIRK_MIDI_MIDIMAN:
 +              umidi->usb_protocol_ops = &snd_usbmidi_midiman_ops;
 +              memcpy(&endpoints[0], quirk->data,
 +                     sizeof(struct snd_usb_midi_endpoint_info));
 +              err = 0;
 +              break;
 +      case QUIRK_MIDI_NOVATION:
 +              umidi->usb_protocol_ops = &snd_usbmidi_novation_ops;
 +              err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
 +              break;
 +      case QUIRK_MIDI_FASTLANE:
 +              umidi->usb_protocol_ops = &snd_usbmidi_raw_ops;
 +              /*
 +               * Interface 1 contains isochronous endpoints, but with the same
 +               * numbers as in interface 0.  Since it is interface 1 that the
 +               * USB core has most recently seen, these descriptors are now
 +               * associated with the endpoint numbers.  This will foul up our
 +               * attempts to submit bulk/interrupt URBs to the endpoints in
 +               * interface 0, so we have to make sure that the USB core looks
 +               * again at interface 0 by calling usb_set_interface() on it.
 +               */
 +              usb_set_interface(umidi->dev, 0, 0);
 +              err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
 +              break;
 +      case QUIRK_MIDI_EMAGIC:
 +              umidi->usb_protocol_ops = &snd_usbmidi_emagic_ops;
 +              memcpy(&endpoints[0], quirk->data,
 +                     sizeof(struct snd_usb_midi_endpoint_info));
 +              err = snd_usbmidi_detect_endpoints(umidi, &endpoints[0], 1);
 +              break;
 +      case QUIRK_MIDI_CME:
 +              umidi->usb_protocol_ops = &snd_usbmidi_cme_ops;
 +              err = snd_usbmidi_detect_per_port_endpoints(umidi, endpoints);
 +              break;
 +      default:
 +              snd_printd(KERN_ERR "invalid quirk type %d\n", quirk->type);
 +              err = -ENXIO;
 +              break;
 +      }
 +      if (err < 0) {
 +              kfree(umidi);
 +              return err;
 +      }
 +
 +      /* create rawmidi device */
 +      out_ports = 0;
 +      in_ports = 0;
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) {
 +              out_ports += hweight16(endpoints[i].out_cables);
 +              in_ports += hweight16(endpoints[i].in_cables);
 +      }
 +      err = snd_usbmidi_create_rawmidi(umidi, out_ports, in_ports);
 +      if (err < 0) {
 +              kfree(umidi);
 +              return err;
 +      }
 +
 +      /* create endpoint/port structures */
 +      if (quirk && quirk->type == QUIRK_MIDI_MIDIMAN)
 +              err = snd_usbmidi_create_endpoints_midiman(umidi, &endpoints[0]);
 +      else
 +              err = snd_usbmidi_create_endpoints(umidi, endpoints);
 +      if (err < 0) {
 +              snd_usbmidi_free(umidi);
 +              return err;
 +      }
 +
 +      list_add_tail(&umidi->list, midi_list);
 +
 +      for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i)
 +              snd_usbmidi_input_start_ep(umidi->endpoints[i].in);
 +      return 0;
 +}
 +
 +EXPORT_SYMBOL(snd_usbmidi_create);
 +EXPORT_SYMBOL(snd_usbmidi_input_stop);
 +EXPORT_SYMBOL(snd_usbmidi_input_start);
 +EXPORT_SYMBOL(snd_usbmidi_disconnect);
index 796d8b2,0000000..fb5d68f
mode 100644,000000..100644
--- /dev/null
@@@ -1,1388 -1,0 +1,1388 @@@
 +/*
 + * Edirol UA-101/UA-1000 driver
 + * Copyright (c) Clemens Ladisch <clemens@ladisch.de>
 + *
 + * This driver is free software: you can redistribute it and/or modify
 + * it under the terms of the GNU General Public License, version 2.
 + *
 + * This driver is distributed in the hope that it will be useful,
 + * but WITHOUT ANY WARRANTY; without even the implied warranty of
 + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 + * GNU General Public License for more details.
 + *
 + * You should have received a copy of the GNU General Public License
 + * along with this driver.  If not, see <http://www.gnu.org/licenses/>.
 + */
 +
 +#include <linux/init.h>
 +#include <linux/module.h>
 +#include <linux/slab.h>
 +#include <linux/usb.h>
 +#include <linux/usb/audio.h>
 +#include <sound/core.h>
 +#include <sound/initval.h>
 +#include <sound/pcm.h>
 +#include <sound/pcm_params.h>
 +#include "../usbaudio.h"
 +#include "../midi.h"
 +
 +MODULE_DESCRIPTION("Edirol UA-101/1000 driver");
 +MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>");
 +MODULE_LICENSE("GPL v2");
 +MODULE_SUPPORTED_DEVICE("{{Edirol,UA-101},{Edirol,UA-1000}}");
 +
 +/*
 + * Should not be lower than the minimum scheduling delay of the host
 + * controller.  Some Intel controllers need more than one frame; as long as
 + * that driver doesn't tell us about this, use 1.5 frames just to be sure.
 + */
 +#define MIN_QUEUE_LENGTH      12
 +/* Somewhat random. */
 +#define MAX_QUEUE_LENGTH      30
 +/*
 + * This magic value optimizes memory usage efficiency for the UA-101's packet
 + * sizes at all sample rates, taking into account the stupid cache pool sizes
-  * that usb_buffer_alloc() uses.
++ * that usb_alloc_coherent() uses.
 + */
 +#define DEFAULT_QUEUE_LENGTH  21
 +
 +#define MAX_PACKET_SIZE               672 /* hardware specific */
 +#define MAX_MEMORY_BUFFERS    DIV_ROUND_UP(MAX_QUEUE_LENGTH, \
 +                                           PAGE_SIZE / MAX_PACKET_SIZE)
 +
 +static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 +static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 +static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 +static unsigned int queue_length = 21;
 +
 +module_param_array(index, int, NULL, 0444);
 +MODULE_PARM_DESC(index, "card index");
 +module_param_array(id, charp, NULL, 0444);
 +MODULE_PARM_DESC(id, "ID string");
 +module_param_array(enable, bool, NULL, 0444);
 +MODULE_PARM_DESC(enable, "enable card");
 +module_param(queue_length, uint, 0644);
 +MODULE_PARM_DESC(queue_length, "USB queue length in microframes, "
 +               __stringify(MIN_QUEUE_LENGTH)"-"__stringify(MAX_QUEUE_LENGTH));
 +
 +enum {
 +      INTF_PLAYBACK,
 +      INTF_CAPTURE,
 +      INTF_MIDI,
 +
 +      INTF_COUNT
 +};
 +
 +/* bits in struct ua101::states */
 +enum {
 +      USB_CAPTURE_RUNNING,
 +      USB_PLAYBACK_RUNNING,
 +      ALSA_CAPTURE_OPEN,
 +      ALSA_PLAYBACK_OPEN,
 +      ALSA_CAPTURE_RUNNING,
 +      ALSA_PLAYBACK_RUNNING,
 +      CAPTURE_URB_COMPLETED,
 +      PLAYBACK_URB_COMPLETED,
 +      DISCONNECTED,
 +};
 +
 +struct ua101 {
 +      struct usb_device *dev;
 +      struct snd_card *card;
 +      struct usb_interface *intf[INTF_COUNT];
 +      int card_index;
 +      struct snd_pcm *pcm;
 +      struct list_head midi_list;
 +      u64 format_bit;
 +      unsigned int rate;
 +      unsigned int packets_per_second;
 +      spinlock_t lock;
 +      struct mutex mutex;
 +      unsigned long states;
 +
 +      /* FIFO to synchronize playback rate to capture rate */
 +      unsigned int rate_feedback_start;
 +      unsigned int rate_feedback_count;
 +      u8 rate_feedback[MAX_QUEUE_LENGTH];
 +
 +      struct list_head ready_playback_urbs;
 +      struct tasklet_struct playback_tasklet;
 +      wait_queue_head_t alsa_capture_wait;
 +      wait_queue_head_t rate_feedback_wait;
 +      wait_queue_head_t alsa_playback_wait;
 +      struct ua101_stream {
 +              struct snd_pcm_substream *substream;
 +              unsigned int usb_pipe;
 +              unsigned int channels;
 +              unsigned int frame_bytes;
 +              unsigned int max_packet_bytes;
 +              unsigned int period_pos;
 +              unsigned int buffer_pos;
 +              unsigned int queue_length;
 +              struct ua101_urb {
 +                      struct urb urb;
 +                      struct usb_iso_packet_descriptor iso_frame_desc[1];
 +                      struct list_head ready_list;
 +              } *urbs[MAX_QUEUE_LENGTH];
 +              struct {
 +                      unsigned int size;
 +                      void *addr;
 +                      dma_addr_t dma;
 +              } buffers[MAX_MEMORY_BUFFERS];
 +      } capture, playback;
 +};
 +
 +static DEFINE_MUTEX(devices_mutex);
 +static unsigned int devices_used;
 +static struct usb_driver ua101_driver;
 +
 +static void abort_alsa_playback(struct ua101 *ua);
 +static void abort_alsa_capture(struct ua101 *ua);
 +
 +static const char *usb_error_string(int err)
 +{
 +      switch (err) {
 +      case -ENODEV:
 +              return "no device";
 +      case -ENOENT:
 +              return "endpoint not enabled";
 +      case -EPIPE:
 +              return "endpoint stalled";
 +      case -ENOSPC:
 +              return "not enough bandwidth";
 +      case -ESHUTDOWN:
 +              return "device disabled";
 +      case -EHOSTUNREACH:
 +              return "device suspended";
 +      case -EINVAL:
 +      case -EAGAIN:
 +      case -EFBIG:
 +      case -EMSGSIZE:
 +              return "internal error";
 +      default:
 +              return "unknown error";
 +      }
 +}
 +
 +static void abort_usb_capture(struct ua101 *ua)
 +{
 +      if (test_and_clear_bit(USB_CAPTURE_RUNNING, &ua->states)) {
 +              wake_up(&ua->alsa_capture_wait);
 +              wake_up(&ua->rate_feedback_wait);
 +      }
 +}
 +
 +static void abort_usb_playback(struct ua101 *ua)
 +{
 +      if (test_and_clear_bit(USB_PLAYBACK_RUNNING, &ua->states))
 +              wake_up(&ua->alsa_playback_wait);
 +}
 +
 +static void playback_urb_complete(struct urb *usb_urb)
 +{
 +      struct ua101_urb *urb = (struct ua101_urb *)usb_urb;
 +      struct ua101 *ua = urb->urb.context;
 +      unsigned long flags;
 +
 +      if (unlikely(urb->urb.status == -ENOENT ||      /* unlinked */
 +                   urb->urb.status == -ENODEV ||      /* device removed */
 +                   urb->urb.status == -ECONNRESET ||  /* unlinked */
 +                   urb->urb.status == -ESHUTDOWN)) {  /* device disabled */
 +              abort_usb_playback(ua);
 +              abort_alsa_playback(ua);
 +              return;
 +      }
 +
 +      if (test_bit(USB_PLAYBACK_RUNNING, &ua->states)) {
 +              /* append URB to FIFO */
 +              spin_lock_irqsave(&ua->lock, flags);
 +              list_add_tail(&urb->ready_list, &ua->ready_playback_urbs);
 +              if (ua->rate_feedback_count > 0)
 +                      tasklet_schedule(&ua->playback_tasklet);
 +              ua->playback.substream->runtime->delay -=
 +                              urb->urb.iso_frame_desc[0].length /
 +                                              ua->playback.frame_bytes;
 +              spin_unlock_irqrestore(&ua->lock, flags);
 +      }
 +}
 +
 +static void first_playback_urb_complete(struct urb *urb)
 +{
 +      struct ua101 *ua = urb->context;
 +
 +      urb->complete = playback_urb_complete;
 +      playback_urb_complete(urb);
 +
 +      set_bit(PLAYBACK_URB_COMPLETED, &ua->states);
 +      wake_up(&ua->alsa_playback_wait);
 +}
 +
 +/* copy data from the ALSA ring buffer into the URB buffer */
 +static bool copy_playback_data(struct ua101_stream *stream, struct urb *urb,
 +                             unsigned int frames)
 +{
 +      struct snd_pcm_runtime *runtime;
 +      unsigned int frame_bytes, frames1;
 +      const u8 *source;
 +
 +      runtime = stream->substream->runtime;
 +      frame_bytes = stream->frame_bytes;
 +      source = runtime->dma_area + stream->buffer_pos * frame_bytes;
 +      if (stream->buffer_pos + frames <= runtime->buffer_size) {
 +              memcpy(urb->transfer_buffer, source, frames * frame_bytes);
 +      } else {
 +              /* wrap around at end of ring buffer */
 +              frames1 = runtime->buffer_size - stream->buffer_pos;
 +              memcpy(urb->transfer_buffer, source, frames1 * frame_bytes);
 +              memcpy(urb->transfer_buffer + frames1 * frame_bytes,
 +                     runtime->dma_area, (frames - frames1) * frame_bytes);
 +      }
 +
 +      stream->buffer_pos += frames;
 +      if (stream->buffer_pos >= runtime->buffer_size)
 +              stream->buffer_pos -= runtime->buffer_size;
 +      stream->period_pos += frames;
 +      if (stream->period_pos >= runtime->period_size) {
 +              stream->period_pos -= runtime->period_size;
 +              return true;
 +      }
 +      return false;
 +}
 +
 +static inline void add_with_wraparound(struct ua101 *ua,
 +                                     unsigned int *value, unsigned int add)
 +{
 +      *value += add;
 +      if (*value >= ua->playback.queue_length)
 +              *value -= ua->playback.queue_length;
 +}
 +
 +static void playback_tasklet(unsigned long data)
 +{
 +      struct ua101 *ua = (void *)data;
 +      unsigned long flags;
 +      unsigned int frames;
 +      struct ua101_urb *urb;
 +      bool do_period_elapsed = false;
 +      int err;
 +
 +      if (unlikely(!test_bit(USB_PLAYBACK_RUNNING, &ua->states)))
 +              return;
 +
 +      /*
 +       * Synchronizing the playback rate to the capture rate is done by using
 +       * the same sequence of packet sizes for both streams.
 +       * Submitting a playback URB therefore requires both a ready URB and
 +       * the size of the corresponding capture packet, i.e., both playback
 +       * and capture URBs must have been completed.  Since the USB core does
 +       * not guarantee that playback and capture complete callbacks are
 +       * called alternately, we use two FIFOs for packet sizes and read URBs;
 +       * submitting playback URBs is possible as long as both FIFOs are
 +       * nonempty.
 +       */
 +      spin_lock_irqsave(&ua->lock, flags);
 +      while (ua->rate_feedback_count > 0 &&
 +             !list_empty(&ua->ready_playback_urbs)) {
 +              /* take packet size out of FIFO */
 +              frames = ua->rate_feedback[ua->rate_feedback_start];
 +              add_with_wraparound(ua, &ua->rate_feedback_start, 1);
 +              ua->rate_feedback_count--;
 +
 +              /* take URB out of FIFO */
 +              urb = list_first_entry(&ua->ready_playback_urbs,
 +                                     struct ua101_urb, ready_list);
 +              list_del(&urb->ready_list);
 +
 +              /* fill packet with data or silence */
 +              urb->urb.iso_frame_desc[0].length =
 +                      frames * ua->playback.frame_bytes;
 +              if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states))
 +                      do_period_elapsed |= copy_playback_data(&ua->playback,
 +                                                              &urb->urb,
 +                                                              frames);
 +              else
 +                      memset(urb->urb.transfer_buffer, 0,
 +                             urb->urb.iso_frame_desc[0].length);
 +
 +              /* and off you go ... */
 +              err = usb_submit_urb(&urb->urb, GFP_ATOMIC);
 +              if (unlikely(err < 0)) {
 +                      spin_unlock_irqrestore(&ua->lock, flags);
 +                      abort_usb_playback(ua);
 +                      abort_alsa_playback(ua);
 +                      dev_err(&ua->dev->dev, "USB request error %d: %s\n",
 +                              err, usb_error_string(err));
 +                      return;
 +              }
 +              ua->playback.substream->runtime->delay += frames;
 +      }
 +      spin_unlock_irqrestore(&ua->lock, flags);
 +      if (do_period_elapsed)
 +              snd_pcm_period_elapsed(ua->playback.substream);
 +}
 +
 +/* copy data from the URB buffer into the ALSA ring buffer */
 +static bool copy_capture_data(struct ua101_stream *stream, struct urb *urb,
 +                            unsigned int frames)
 +{
 +      struct snd_pcm_runtime *runtime;
 +      unsigned int frame_bytes, frames1;
 +      u8 *dest;
 +
 +      runtime = stream->substream->runtime;
 +      frame_bytes = stream->frame_bytes;
 +      dest = runtime->dma_area + stream->buffer_pos * frame_bytes;
 +      if (stream->buffer_pos + frames <= runtime->buffer_size) {
 +              memcpy(dest, urb->transfer_buffer, frames * frame_bytes);
 +      } else {
 +              /* wrap around at end of ring buffer */
 +              frames1 = runtime->buffer_size - stream->buffer_pos;
 +              memcpy(dest, urb->transfer_buffer, frames1 * frame_bytes);
 +              memcpy(runtime->dma_area,
 +                     urb->transfer_buffer + frames1 * frame_bytes,
 +                     (frames - frames1) * frame_bytes);
 +      }
 +
 +      stream->buffer_pos += frames;
 +      if (stream->buffer_pos >= runtime->buffer_size)
 +              stream->buffer_pos -= runtime->buffer_size;
 +      stream->period_pos += frames;
 +      if (stream->period_pos >= runtime->period_size) {
 +              stream->period_pos -= runtime->period_size;
 +              return true;
 +      }
 +      return false;
 +}
 +
 +static void capture_urb_complete(struct urb *urb)
 +{
 +      struct ua101 *ua = urb->context;
 +      struct ua101_stream *stream = &ua->capture;
 +      unsigned long flags;
 +      unsigned int frames, write_ptr;
 +      bool do_period_elapsed;
 +      int err;
 +
 +      if (unlikely(urb->status == -ENOENT ||          /* unlinked */
 +                   urb->status == -ENODEV ||          /* device removed */
 +                   urb->status == -ECONNRESET ||      /* unlinked */
 +                   urb->status == -ESHUTDOWN))        /* device disabled */
 +              goto stream_stopped;
 +
 +      if (urb->status >= 0 && urb->iso_frame_desc[0].status >= 0)
 +              frames = urb->iso_frame_desc[0].actual_length /
 +                      stream->frame_bytes;
 +      else
 +              frames = 0;
 +
 +      spin_lock_irqsave(&ua->lock, flags);
 +
 +      if (frames > 0 && test_bit(ALSA_CAPTURE_RUNNING, &ua->states))
 +              do_period_elapsed = copy_capture_data(stream, urb, frames);
 +      else
 +              do_period_elapsed = false;
 +
 +      if (test_bit(USB_CAPTURE_RUNNING, &ua->states)) {
 +              err = usb_submit_urb(urb, GFP_ATOMIC);
 +              if (unlikely(err < 0)) {
 +                      spin_unlock_irqrestore(&ua->lock, flags);
 +                      dev_err(&ua->dev->dev, "USB request error %d: %s\n",
 +                              err, usb_error_string(err));
 +                      goto stream_stopped;
 +              }
 +
 +              /* append packet size to FIFO */
 +              write_ptr = ua->rate_feedback_start;
 +              add_with_wraparound(ua, &write_ptr, ua->rate_feedback_count);
 +              ua->rate_feedback[write_ptr] = frames;
 +              if (ua->rate_feedback_count < ua->playback.queue_length) {
 +                      ua->rate_feedback_count++;
 +                      if (ua->rate_feedback_count ==
 +                                              ua->playback.queue_length)
 +                              wake_up(&ua->rate_feedback_wait);
 +              } else {
 +                      /*
 +                       * Ring buffer overflow; this happens when the playback
 +                       * stream is not running.  Throw away the oldest entry,
 +                       * so that the playback stream, when it starts, sees
 +                       * the most recent packet sizes.
 +                       */
 +                      add_with_wraparound(ua, &ua->rate_feedback_start, 1);
 +              }
 +              if (test_bit(USB_PLAYBACK_RUNNING, &ua->states) &&
 +                  !list_empty(&ua->ready_playback_urbs))
 +                      tasklet_schedule(&ua->playback_tasklet);
 +      }
 +
 +      spin_unlock_irqrestore(&ua->lock, flags);
 +
 +      if (do_period_elapsed)
 +              snd_pcm_period_elapsed(stream->substream);
 +
 +      return;
 +
 +stream_stopped:
 +      abort_usb_playback(ua);
 +      abort_usb_capture(ua);
 +      abort_alsa_playback(ua);
 +      abort_alsa_capture(ua);
 +}
 +
 +static void first_capture_urb_complete(struct urb *urb)
 +{
 +      struct ua101 *ua = urb->context;
 +
 +      urb->complete = capture_urb_complete;
 +      capture_urb_complete(urb);
 +
 +      set_bit(CAPTURE_URB_COMPLETED, &ua->states);
 +      wake_up(&ua->alsa_capture_wait);
 +}
 +
 +static int submit_stream_urbs(struct ua101 *ua, struct ua101_stream *stream)
 +{
 +      unsigned int i;
 +
 +      for (i = 0; i < stream->queue_length; ++i) {
 +              int err = usb_submit_urb(&stream->urbs[i]->urb, GFP_KERNEL);
 +              if (err < 0) {
 +                      dev_err(&ua->dev->dev, "USB request error %d: %s\n",
 +                              err, usb_error_string(err));
 +                      return err;
 +              }
 +      }
 +      return 0;
 +}
 +
 +static void kill_stream_urbs(struct ua101_stream *stream)
 +{
 +      unsigned int i;
 +
 +      for (i = 0; i < stream->queue_length; ++i)
 +              usb_kill_urb(&stream->urbs[i]->urb);
 +}
 +
 +static int enable_iso_interface(struct ua101 *ua, unsigned int intf_index)
 +{
 +      struct usb_host_interface *alts;
 +
 +      alts = ua->intf[intf_index]->cur_altsetting;
 +      if (alts->desc.bAlternateSetting != 1) {
 +              int err = usb_set_interface(ua->dev,
 +                                          alts->desc.bInterfaceNumber, 1);
 +              if (err < 0) {
 +                      dev_err(&ua->dev->dev,
 +                              "cannot initialize interface; error %d: %s\n",
 +                              err, usb_error_string(err));
 +                      return err;
 +              }
 +      }
 +      return 0;
 +}
 +
 +static void disable_iso_interface(struct ua101 *ua, unsigned int intf_index)
 +{
 +      struct usb_host_interface *alts;
 +
 +      alts = ua->intf[intf_index]->cur_altsetting;
 +      if (alts->desc.bAlternateSetting != 0) {
 +              int err = usb_set_interface(ua->dev,
 +                                          alts->desc.bInterfaceNumber, 0);
 +              if (err < 0 && !test_bit(DISCONNECTED, &ua->states))
 +                      dev_warn(&ua->dev->dev,
 +                               "interface reset failed; error %d: %s\n",
 +                               err, usb_error_string(err));
 +      }
 +}
 +
 +static void stop_usb_capture(struct ua101 *ua)
 +{
 +      clear_bit(USB_CAPTURE_RUNNING, &ua->states);
 +
 +      kill_stream_urbs(&ua->capture);
 +
 +      disable_iso_interface(ua, INTF_CAPTURE);
 +}
 +
 +static int start_usb_capture(struct ua101 *ua)
 +{
 +      int err;
 +
 +      if (test_bit(DISCONNECTED, &ua->states))
 +              return -ENODEV;
 +
 +      if (test_bit(USB_CAPTURE_RUNNING, &ua->states))
 +              return 0;
 +
 +      kill_stream_urbs(&ua->capture);
 +
 +      err = enable_iso_interface(ua, INTF_CAPTURE);
 +      if (err < 0)
 +              return err;
 +
 +      clear_bit(CAPTURE_URB_COMPLETED, &ua->states);
 +      ua->capture.urbs[0]->urb.complete = first_capture_urb_complete;
 +      ua->rate_feedback_start = 0;
 +      ua->rate_feedback_count = 0;
 +
 +      set_bit(USB_CAPTURE_RUNNING, &ua->states);
 +      err = submit_stream_urbs(ua, &ua->capture);
 +      if (err < 0)
 +              stop_usb_capture(ua);
 +      return err;
 +}
 +
 +static void stop_usb_playback(struct ua101 *ua)
 +{
 +      clear_bit(USB_PLAYBACK_RUNNING, &ua->states);
 +
 +      kill_stream_urbs(&ua->playback);
 +
 +      tasklet_kill(&ua->playback_tasklet);
 +
 +      disable_iso_interface(ua, INTF_PLAYBACK);
 +}
 +
 +static int start_usb_playback(struct ua101 *ua)
 +{
 +      unsigned int i, frames;
 +      struct urb *urb;
 +      int err = 0;
 +
 +      if (test_bit(DISCONNECTED, &ua->states))
 +              return -ENODEV;
 +
 +      if (test_bit(USB_PLAYBACK_RUNNING, &ua->states))
 +              return 0;
 +
 +      kill_stream_urbs(&ua->playback);
 +      tasklet_kill(&ua->playback_tasklet);
 +
 +      err = enable_iso_interface(ua, INTF_PLAYBACK);
 +      if (err < 0)
 +              return err;
 +
 +      clear_bit(PLAYBACK_URB_COMPLETED, &ua->states);
 +      ua->playback.urbs[0]->urb.complete =
 +              first_playback_urb_complete;
 +      spin_lock_irq(&ua->lock);
 +      INIT_LIST_HEAD(&ua->ready_playback_urbs);
 +      spin_unlock_irq(&ua->lock);
 +
 +      /*
 +       * We submit the initial URBs all at once, so we have to wait for the
 +       * packet size FIFO to be full.
 +       */
 +      wait_event(ua->rate_feedback_wait,
 +                 ua->rate_feedback_count >= ua->playback.queue_length ||
 +                 !test_bit(USB_CAPTURE_RUNNING, &ua->states) ||
 +                 test_bit(DISCONNECTED, &ua->states));
 +      if (test_bit(DISCONNECTED, &ua->states)) {
 +              stop_usb_playback(ua);
 +              return -ENODEV;
 +      }
 +      if (!test_bit(USB_CAPTURE_RUNNING, &ua->states)) {
 +              stop_usb_playback(ua);
 +              return -EIO;
 +      }
 +
 +      for (i = 0; i < ua->playback.queue_length; ++i) {
 +              /* all initial URBs contain silence */
 +              spin_lock_irq(&ua->lock);
 +              frames = ua->rate_feedback[ua->rate_feedback_start];
 +              add_with_wraparound(ua, &ua->rate_feedback_start, 1);
 +              ua->rate_feedback_count--;
 +              spin_unlock_irq(&ua->lock);
 +              urb = &ua->playback.urbs[i]->urb;
 +              urb->iso_frame_desc[0].length =
 +                      frames * ua->playback.frame_bytes;
 +              memset(urb->transfer_buffer, 0,
 +                     urb->iso_frame_desc[0].length);
 +      }
 +
 +      set_bit(USB_PLAYBACK_RUNNING, &ua->states);
 +      err = submit_stream_urbs(ua, &ua->playback);
 +      if (err < 0)
 +              stop_usb_playback(ua);
 +      return err;
 +}
 +
 +static void abort_alsa_capture(struct ua101 *ua)
 +{
 +      if (test_bit(ALSA_CAPTURE_RUNNING, &ua->states))
 +              snd_pcm_stop(ua->capture.substream, SNDRV_PCM_STATE_XRUN);
 +}
 +
 +static void abort_alsa_playback(struct ua101 *ua)
 +{
 +      if (test_bit(ALSA_PLAYBACK_RUNNING, &ua->states))
 +              snd_pcm_stop(ua->playback.substream, SNDRV_PCM_STATE_XRUN);
 +}
 +
 +static int set_stream_hw(struct ua101 *ua, struct snd_pcm_substream *substream,
 +                       unsigned int channels)
 +{
 +      int err;
 +
 +      substream->runtime->hw.info =
 +              SNDRV_PCM_INFO_MMAP |
 +              SNDRV_PCM_INFO_MMAP_VALID |
 +              SNDRV_PCM_INFO_BATCH |
 +              SNDRV_PCM_INFO_INTERLEAVED |
 +              SNDRV_PCM_INFO_BLOCK_TRANSFER |
 +              SNDRV_PCM_INFO_FIFO_IN_FRAMES;
 +      substream->runtime->hw.formats = ua->format_bit;
 +      substream->runtime->hw.rates = snd_pcm_rate_to_rate_bit(ua->rate);
 +      substream->runtime->hw.rate_min = ua->rate;
 +      substream->runtime->hw.rate_max = ua->rate;
 +      substream->runtime->hw.channels_min = channels;
 +      substream->runtime->hw.channels_max = channels;
 +      substream->runtime->hw.buffer_bytes_max = 45000 * 1024;
 +      substream->runtime->hw.period_bytes_min = 1;
 +      substream->runtime->hw.period_bytes_max = UINT_MAX;
 +      substream->runtime->hw.periods_min = 2;
 +      substream->runtime->hw.periods_max = UINT_MAX;
 +      err = snd_pcm_hw_constraint_minmax(substream->runtime,
 +                                         SNDRV_PCM_HW_PARAM_PERIOD_TIME,
 +                                         1500000 / ua->packets_per_second,
 +                                         8192000);
 +      if (err < 0)
 +              return err;
 +      err = snd_pcm_hw_constraint_msbits(substream->runtime, 0, 32, 24);
 +      return err;
 +}
 +
 +static int capture_pcm_open(struct snd_pcm_substream *substream)
 +{
 +      struct ua101 *ua = substream->private_data;
 +      int err;
 +
 +      ua->capture.substream = substream;
 +      err = set_stream_hw(ua, substream, ua->capture.channels);
 +      if (err < 0)
 +              return err;
 +      substream->runtime->hw.fifo_size =
 +              DIV_ROUND_CLOSEST(ua->rate, ua->packets_per_second);
 +      substream->runtime->delay = substream->runtime->hw.fifo_size;
 +
 +      mutex_lock(&ua->mutex);
 +      err = start_usb_capture(ua);
 +      if (err >= 0)
 +              set_bit(ALSA_CAPTURE_OPEN, &ua->states);
 +      mutex_unlock(&ua->mutex);
 +      return err;
 +}
 +
 +static int playback_pcm_open(struct snd_pcm_substream *substream)
 +{
 +      struct ua101 *ua = substream->private_data;
 +      int err;
 +
 +      ua->playback.substream = substream;
 +      err = set_stream_hw(ua, substream, ua->playback.channels);
 +      if (err < 0)
 +              return err;
 +      substream->runtime->hw.fifo_size =
 +              DIV_ROUND_CLOSEST(ua->rate * ua->playback.queue_length,
 +                                ua->packets_per_second);
 +
 +      mutex_lock(&ua->mutex);
 +      err = start_usb_capture(ua);
 +      if (err < 0)
 +              goto error;
 +      err = start_usb_playback(ua);
 +      if (err < 0) {
 +              if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
 +                      stop_usb_capture(ua);
 +              goto error;
 +      }
 +      set_bit(ALSA_PLAYBACK_OPEN, &ua->states);
 +error:
 +      mutex_unlock(&ua->mutex);
 +      return err;
 +}
 +
 +static int capture_pcm_close(struct snd_pcm_substream *substream)
 +{
 +      struct ua101 *ua = substream->private_data;
 +
 +      mutex_lock(&ua->mutex);
 +      clear_bit(ALSA_CAPTURE_OPEN, &ua->states);
 +      if (!test_bit(ALSA_PLAYBACK_OPEN, &ua->states))
 +              stop_usb_capture(ua);
 +      mutex_unlock(&ua->mutex);
 +      return 0;
 +}
 +
 +static int playback_pcm_close(struct snd_pcm_substream *substream)
 +{
 +      struct ua101 *ua = substream->private_data;
 +
 +      mutex_lock(&ua->mutex);
 +      stop_usb_playback(ua);
 +      clear_bit(ALSA_PLAYBACK_OPEN, &ua->states);
 +      if (!test_bit(ALSA_CAPTURE_OPEN, &ua->states))
 +              stop_usb_capture(ua);
 +      mutex_unlock(&ua->mutex);
 +      return 0;
 +}
 +
 +static int capture_pcm_hw_params(struct snd_pcm_substream *substream,
 +                               struct snd_pcm_hw_params *hw_params)
 +{
 +      struct ua101 *ua = substream->private_data;
 +      int err;
 +
 +      mutex_lock(&ua->mutex);
 +      err = start_usb_capture(ua);
 +      mutex_unlock(&ua->mutex);
 +      if (err < 0)
 +              return err;
 +
 +      return snd_pcm_lib_alloc_vmalloc_buffer(substream,
 +                                              params_buffer_bytes(hw_params));
 +}
 +
 +static int playback_pcm_hw_params(struct snd_pcm_substream *substream,
 +                                struct snd_pcm_hw_params *hw_params)
 +{
 +      struct ua101 *ua = substream->private_data;
 +      int err;
 +
 +      mutex_lock(&ua->mutex);
 +      err = start_usb_capture(ua);
 +      if (err >= 0)
 +              err = start_usb_playback(ua);
 +      mutex_unlock(&ua->mutex);
 +      if (err < 0)
 +              return err;
 +
 +      return snd_pcm_lib_alloc_vmalloc_buffer(substream,
 +                                              params_buffer_bytes(hw_params));
 +}
 +
 +static int ua101_pcm_hw_free(struct snd_pcm_substream *substream)
 +{
 +      return snd_pcm_lib_free_vmalloc_buffer(substream);
 +}
 +
 +static int capture_pcm_prepare(struct snd_pcm_substream *substream)
 +{
 +      struct ua101 *ua = substream->private_data;
 +      int err;
 +
 +      mutex_lock(&ua->mutex);
 +      err = start_usb_capture(ua);
 +      mutex_unlock(&ua->mutex);
 +      if (err < 0)
 +              return err;
 +
 +      /*
 +       * The EHCI driver schedules the first packet of an iso stream at 10 ms
 +       * in the future, i.e., no data is actually captured for that long.
 +       * Take the wait here so that the stream is known to be actually
 +       * running when the start trigger has been called.
 +       */
 +      wait_event(ua->alsa_capture_wait,
 +                 test_bit(CAPTURE_URB_COMPLETED, &ua->states) ||
 +                 !test_bit(USB_CAPTURE_RUNNING, &ua->states));
 +      if (test_bit(DISCONNECTED, &ua->states))
 +              return -ENODEV;
 +      if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
 +              return -EIO;
 +
 +      ua->capture.period_pos = 0;
 +      ua->capture.buffer_pos = 0;
 +      return 0;
 +}
 +
 +static int playback_pcm_prepare(struct snd_pcm_substream *substream)
 +{
 +      struct ua101 *ua = substream->private_data;
 +      int err;
 +
 +      mutex_lock(&ua->mutex);
 +      err = start_usb_capture(ua);
 +      if (err >= 0)
 +              err = start_usb_playback(ua);
 +      mutex_unlock(&ua->mutex);
 +      if (err < 0)
 +              return err;
 +
 +      /* see the comment in capture_pcm_prepare() */
 +      wait_event(ua->alsa_playback_wait,
 +                 test_bit(PLAYBACK_URB_COMPLETED, &ua->states) ||
 +                 !test_bit(USB_PLAYBACK_RUNNING, &ua->states));
 +      if (test_bit(DISCONNECTED, &ua->states))
 +              return -ENODEV;
 +      if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
 +              return -EIO;
 +
 +      substream->runtime->delay = 0;
 +      ua->playback.period_pos = 0;
 +      ua->playback.buffer_pos = 0;
 +      return 0;
 +}
 +
 +static int capture_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 +{
 +      struct ua101 *ua = substream->private_data;
 +
 +      switch (cmd) {
 +      case SNDRV_PCM_TRIGGER_START:
 +              if (!test_bit(USB_CAPTURE_RUNNING, &ua->states))
 +                      return -EIO;
 +              set_bit(ALSA_CAPTURE_RUNNING, &ua->states);
 +              return 0;
 +      case SNDRV_PCM_TRIGGER_STOP:
 +              clear_bit(ALSA_CAPTURE_RUNNING, &ua->states);
 +              return 0;
 +      default:
 +              return -EINVAL;
 +      }
 +}
 +
 +static int playback_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 +{
 +      struct ua101 *ua = substream->private_data;
 +
 +      switch (cmd) {
 +      case SNDRV_PCM_TRIGGER_START:
 +              if (!test_bit(USB_PLAYBACK_RUNNING, &ua->states))
 +                      return -EIO;
 +              set_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
 +              return 0;
 +      case SNDRV_PCM_TRIGGER_STOP:
 +              clear_bit(ALSA_PLAYBACK_RUNNING, &ua->states);
 +              return 0;
 +      default:
 +              return -EINVAL;
 +      }
 +}
 +
 +static inline snd_pcm_uframes_t ua101_pcm_pointer(struct ua101 *ua,
 +                                                struct ua101_stream *stream)
 +{
 +      unsigned long flags;
 +      unsigned int pos;
 +
 +      spin_lock_irqsave(&ua->lock, flags);
 +      pos = stream->buffer_pos;
 +      spin_unlock_irqrestore(&ua->lock, flags);
 +      return pos;
 +}
 +
 +static snd_pcm_uframes_t capture_pcm_pointer(struct snd_pcm_substream *subs)
 +{
 +      struct ua101 *ua = subs->private_data;
 +
 +      return ua101_pcm_pointer(ua, &ua->capture);
 +}
 +
 +static snd_pcm_uframes_t playback_pcm_pointer(struct snd_pcm_substream *subs)
 +{
 +      struct ua101 *ua = subs->private_data;
 +
 +      return ua101_pcm_pointer(ua, &ua->playback);
 +}
 +
 +static struct snd_pcm_ops capture_pcm_ops = {
 +      .open = capture_pcm_open,
 +      .close = capture_pcm_close,
 +      .ioctl = snd_pcm_lib_ioctl,
 +      .hw_params = capture_pcm_hw_params,
 +      .hw_free = ua101_pcm_hw_free,
 +      .prepare = capture_pcm_prepare,
 +      .trigger = capture_pcm_trigger,
 +      .pointer = capture_pcm_pointer,
 +      .page = snd_pcm_lib_get_vmalloc_page,
 +      .mmap = snd_pcm_lib_mmap_vmalloc,
 +};
 +
 +static struct snd_pcm_ops playback_pcm_ops = {
 +      .open = playback_pcm_open,
 +      .close = playback_pcm_close,
 +      .ioctl = snd_pcm_lib_ioctl,
 +      .hw_params = playback_pcm_hw_params,
 +      .hw_free = ua101_pcm_hw_free,
 +      .prepare = playback_pcm_prepare,
 +      .trigger = playback_pcm_trigger,
 +      .pointer = playback_pcm_pointer,
 +      .page = snd_pcm_lib_get_vmalloc_page,
 +      .mmap = snd_pcm_lib_mmap_vmalloc,
 +};
 +
 +static const struct uac_format_type_i_discrete_descriptor *
 +find_format_descriptor(struct usb_interface *interface)
 +{
 +      struct usb_host_interface *alt;
 +      u8 *extra;
 +      int extralen;
 +
 +      if (interface->num_altsetting != 2) {
 +              dev_err(&interface->dev, "invalid num_altsetting\n");
 +              return NULL;
 +      }
 +
 +      alt = &interface->altsetting[0];
 +      if (alt->desc.bNumEndpoints != 0) {
 +              dev_err(&interface->dev, "invalid bNumEndpoints\n");
 +              return NULL;
 +      }
 +
 +      alt = &interface->altsetting[1];
 +      if (alt->desc.bNumEndpoints != 1) {
 +              dev_err(&interface->dev, "invalid bNumEndpoints\n");
 +              return NULL;
 +      }
 +
 +      extra = alt->extra;
 +      extralen = alt->extralen;
 +      while (extralen >= sizeof(struct usb_descriptor_header)) {
 +              struct uac_format_type_i_discrete_descriptor *desc;
 +
 +              desc = (struct uac_format_type_i_discrete_descriptor *)extra;
 +              if (desc->bLength > extralen) {
 +                      dev_err(&interface->dev, "descriptor overflow\n");
 +                      return NULL;
 +              }
 +              if (desc->bLength == UAC_FORMAT_TYPE_I_DISCRETE_DESC_SIZE(1) &&
 +                  desc->bDescriptorType == USB_DT_CS_INTERFACE &&
 +                  desc->bDescriptorSubtype == UAC_FORMAT_TYPE) {
 +                      if (desc->bFormatType != UAC_FORMAT_TYPE_I_PCM ||
 +                          desc->bSamFreqType != 1) {
 +                              dev_err(&interface->dev,
 +                                      "invalid format type\n");
 +                              return NULL;
 +                      }
 +                      return desc;
 +              }
 +              extralen -= desc->bLength;
 +              extra += desc->bLength;
 +      }
 +      dev_err(&interface->dev, "sample format descriptor not found\n");
 +      return NULL;
 +}
 +
 +static int detect_usb_format(struct ua101 *ua)
 +{
 +      const struct uac_format_type_i_discrete_descriptor *fmt_capture;
 +      const struct uac_format_type_i_discrete_descriptor *fmt_playback;
 +      const struct usb_endpoint_descriptor *epd;
 +      unsigned int rate2;
 +
 +      fmt_capture = find_format_descriptor(ua->intf[INTF_CAPTURE]);
 +      fmt_playback = find_format_descriptor(ua->intf[INTF_PLAYBACK]);
 +      if (!fmt_capture || !fmt_playback)
 +              return -ENXIO;
 +
 +      switch (fmt_capture->bSubframeSize) {
 +      case 3:
 +              ua->format_bit = SNDRV_PCM_FMTBIT_S24_3LE;
 +              break;
 +      case 4:
 +              ua->format_bit = SNDRV_PCM_FMTBIT_S32_LE;
 +              break;
 +      default:
 +              dev_err(&ua->dev->dev, "sample width is not 24 or 32 bits\n");
 +              return -ENXIO;
 +      }
 +      if (fmt_capture->bSubframeSize != fmt_playback->bSubframeSize) {
 +              dev_err(&ua->dev->dev,
 +                      "playback/capture sample widths do not match\n");
 +              return -ENXIO;
 +      }
 +
 +      if (fmt_capture->bBitResolution != 24 ||
 +          fmt_playback->bBitResolution != 24) {
 +              dev_err(&ua->dev->dev, "sample width is not 24 bits\n");
 +              return -ENXIO;
 +      }
 +
 +      ua->rate = combine_triple(fmt_capture->tSamFreq[0]);
 +      rate2 = combine_triple(fmt_playback->tSamFreq[0]);
 +      if (ua->rate != rate2) {
 +              dev_err(&ua->dev->dev,
 +                      "playback/capture rates do not match: %u/%u\n",
 +                      rate2, ua->rate);
 +              return -ENXIO;
 +      }
 +
 +      switch (ua->dev->speed) {
 +      case USB_SPEED_FULL:
 +              ua->packets_per_second = 1000;
 +              break;
 +      case USB_SPEED_HIGH:
 +              ua->packets_per_second = 8000;
 +              break;
 +      default:
 +              dev_err(&ua->dev->dev, "unknown device speed\n");
 +              return -ENXIO;
 +      }
 +
 +      ua->capture.channels = fmt_capture->bNrChannels;
 +      ua->playback.channels = fmt_playback->bNrChannels;
 +      ua->capture.frame_bytes =
 +              fmt_capture->bSubframeSize * ua->capture.channels;
 +      ua->playback.frame_bytes =
 +              fmt_playback->bSubframeSize * ua->playback.channels;
 +
 +      epd = &ua->intf[INTF_CAPTURE]->altsetting[1].endpoint[0].desc;
 +      if (!usb_endpoint_is_isoc_in(epd)) {
 +              dev_err(&ua->dev->dev, "invalid capture endpoint\n");
 +              return -ENXIO;
 +      }
 +      ua->capture.usb_pipe = usb_rcvisocpipe(ua->dev, usb_endpoint_num(epd));
 +      ua->capture.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
 +
 +      epd = &ua->intf[INTF_PLAYBACK]->altsetting[1].endpoint[0].desc;
 +      if (!usb_endpoint_is_isoc_out(epd)) {
 +              dev_err(&ua->dev->dev, "invalid playback endpoint\n");
 +              return -ENXIO;
 +      }
 +      ua->playback.usb_pipe = usb_sndisocpipe(ua->dev, usb_endpoint_num(epd));
 +      ua->playback.max_packet_bytes = le16_to_cpu(epd->wMaxPacketSize);
 +      return 0;
 +}
 +
 +static int alloc_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
 +{
 +      unsigned int remaining_packets, packets, packets_per_page, i;
 +      size_t size;
 +
 +      stream->queue_length = queue_length;
 +      stream->queue_length = max(stream->queue_length,
 +                                 (unsigned int)MIN_QUEUE_LENGTH);
 +      stream->queue_length = min(stream->queue_length,
 +                                 (unsigned int)MAX_QUEUE_LENGTH);
 +
 +      /*
-        * The cache pool sizes used by usb_buffer_alloc() (128, 512, 2048) are
++       * The cache pool sizes used by usb_alloc_coherent() (128, 512, 2048) are
 +       * quite bad when used with the packet sizes of this device (e.g. 280,
 +       * 520, 624).  Therefore, we allocate and subdivide entire pages, using
 +       * a smaller buffer only for the last chunk.
 +       */
 +      remaining_packets = stream->queue_length;
 +      packets_per_page = PAGE_SIZE / stream->max_packet_bytes;
 +      for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i) {
 +              packets = min(remaining_packets, packets_per_page);
 +              size = packets * stream->max_packet_bytes;
 +              stream->buffers[i].addr =
-                       usb_buffer_alloc(ua->dev, size, GFP_KERNEL,
-                                        &stream->buffers[i].dma);
++                      usb_alloc_coherent(ua->dev, size, GFP_KERNEL,
++                                         &stream->buffers[i].dma);
 +              if (!stream->buffers[i].addr)
 +                      return -ENOMEM;
 +              stream->buffers[i].size = size;
 +              remaining_packets -= packets;
 +              if (!remaining_packets)
 +                      break;
 +      }
 +      if (remaining_packets) {
 +              dev_err(&ua->dev->dev, "too many packets\n");
 +              return -ENXIO;
 +      }
 +      return 0;
 +}
 +
 +static void free_stream_buffers(struct ua101 *ua, struct ua101_stream *stream)
 +{
 +      unsigned int i;
 +
 +      for (i = 0; i < ARRAY_SIZE(stream->buffers); ++i)
-               usb_buffer_free(ua->dev,
-                               stream->buffers[i].size,
-                               stream->buffers[i].addr,
-                               stream->buffers[i].dma);
++              usb_free_coherent(ua->dev,
++                                stream->buffers[i].size,
++                                stream->buffers[i].addr,
++                                stream->buffers[i].dma);
 +}
 +
 +static int alloc_stream_urbs(struct ua101 *ua, struct ua101_stream *stream,
 +                           void (*urb_complete)(struct urb *))
 +{
 +      unsigned max_packet_size = stream->max_packet_bytes;
 +      struct ua101_urb *urb;
 +      unsigned int b, u = 0;
 +
 +      for (b = 0; b < ARRAY_SIZE(stream->buffers); ++b) {
 +              unsigned int size = stream->buffers[b].size;
 +              u8 *addr = stream->buffers[b].addr;
 +              dma_addr_t dma = stream->buffers[b].dma;
 +
 +              while (size >= max_packet_size) {
 +                      if (u >= stream->queue_length)
 +                              goto bufsize_error;
 +                      urb = kmalloc(sizeof(*urb), GFP_KERNEL);
 +                      if (!urb)
 +                              return -ENOMEM;
 +                      usb_init_urb(&urb->urb);
 +                      urb->urb.dev = ua->dev;
 +                      urb->urb.pipe = stream->usb_pipe;
 +                      urb->urb.transfer_flags = URB_ISO_ASAP |
 +                                      URB_NO_TRANSFER_DMA_MAP;
 +                      urb->urb.transfer_buffer = addr;
 +                      urb->urb.transfer_dma = dma;
 +                      urb->urb.transfer_buffer_length = max_packet_size;
 +                      urb->urb.number_of_packets = 1;
 +                      urb->urb.interval = 1;
 +                      urb->urb.context = ua;
 +                      urb->urb.complete = urb_complete;
 +                      urb->urb.iso_frame_desc[0].offset = 0;
 +                      urb->urb.iso_frame_desc[0].length = max_packet_size;
 +                      stream->urbs[u++] = urb;
 +                      size -= max_packet_size;
 +                      addr += max_packet_size;
 +                      dma += max_packet_size;
 +              }
 +      }
 +      if (u == stream->queue_length)
 +              return 0;
 +bufsize_error:
 +      dev_err(&ua->dev->dev, "internal buffer size error\n");
 +      return -ENXIO;
 +}
 +
 +static void free_stream_urbs(struct ua101_stream *stream)
 +{
 +      unsigned int i;
 +
 +      for (i = 0; i < stream->queue_length; ++i)
 +              kfree(stream->urbs[i]);
 +}
 +
 +static void free_usb_related_resources(struct ua101 *ua,
 +                                     struct usb_interface *interface)
 +{
 +      unsigned int i;
 +
 +      free_stream_urbs(&ua->capture);
 +      free_stream_urbs(&ua->playback);
 +      free_stream_buffers(ua, &ua->capture);
 +      free_stream_buffers(ua, &ua->playback);
 +
 +      for (i = 0; i < ARRAY_SIZE(ua->intf); ++i)
 +              if (ua->intf[i]) {
 +                      usb_set_intfdata(ua->intf[i], NULL);
 +                      if (ua->intf[i] != interface)
 +                              usb_driver_release_interface(&ua101_driver,
 +                                                           ua->intf[i]);
 +              }
 +}
 +
 +static void ua101_card_free(struct snd_card *card)
 +{
 +      struct ua101 *ua = card->private_data;
 +
 +      mutex_destroy(&ua->mutex);
 +}
 +
 +static int ua101_probe(struct usb_interface *interface,
 +                     const struct usb_device_id *usb_id)
 +{
 +      static const struct snd_usb_midi_endpoint_info midi_ep = {
 +              .out_cables = 0x0001,
 +              .in_cables = 0x0001
 +      };
 +      static const struct snd_usb_audio_quirk midi_quirk = {
 +              .type = QUIRK_MIDI_FIXED_ENDPOINT,
 +              .data = &midi_ep
 +      };
 +      static const int intf_numbers[2][3] = {
 +              {       /* UA-101 */
 +                      [INTF_PLAYBACK] = 0,
 +                      [INTF_CAPTURE] = 1,
 +                      [INTF_MIDI] = 2,
 +              },
 +              {       /* UA-1000 */
 +                      [INTF_CAPTURE] = 1,
 +                      [INTF_PLAYBACK] = 2,
 +                      [INTF_MIDI] = 3,
 +              },
 +      };
 +      struct snd_card *card;
 +      struct ua101 *ua;
 +      unsigned int card_index, i;
 +      int is_ua1000;
 +      const char *name;
 +      char usb_path[32];
 +      int err;
 +
 +      is_ua1000 = usb_id->idProduct == 0x0044;
 +
 +      if (interface->altsetting->desc.bInterfaceNumber !=
 +          intf_numbers[is_ua1000][0])
 +              return -ENODEV;
 +
 +      mutex_lock(&devices_mutex);
 +
 +      for (card_index = 0; card_index < SNDRV_CARDS; ++card_index)
 +              if (enable[card_index] && !(devices_used & (1 << card_index)))
 +                      break;
 +      if (card_index >= SNDRV_CARDS) {
 +              mutex_unlock(&devices_mutex);
 +              return -ENOENT;
 +      }
 +      err = snd_card_create(index[card_index], id[card_index], THIS_MODULE,
 +                            sizeof(*ua), &card);
 +      if (err < 0) {
 +              mutex_unlock(&devices_mutex);
 +              return err;
 +      }
 +      card->private_free = ua101_card_free;
 +      ua = card->private_data;
 +      ua->dev = interface_to_usbdev(interface);
 +      ua->card = card;
 +      ua->card_index = card_index;
 +      INIT_LIST_HEAD(&ua->midi_list);
 +      spin_lock_init(&ua->lock);
 +      mutex_init(&ua->mutex);
 +      INIT_LIST_HEAD(&ua->ready_playback_urbs);
 +      tasklet_init(&ua->playback_tasklet,
 +                   playback_tasklet, (unsigned long)ua);
 +      init_waitqueue_head(&ua->alsa_capture_wait);
 +      init_waitqueue_head(&ua->rate_feedback_wait);
 +      init_waitqueue_head(&ua->alsa_playback_wait);
 +
 +      ua->intf[0] = interface;
 +      for (i = 1; i < ARRAY_SIZE(ua->intf); ++i) {
 +              ua->intf[i] = usb_ifnum_to_if(ua->dev,
 +                                            intf_numbers[is_ua1000][i]);
 +              if (!ua->intf[i]) {
 +                      dev_err(&ua->dev->dev, "interface %u not found\n",
 +                              intf_numbers[is_ua1000][i]);
 +                      err = -ENXIO;
 +                      goto probe_error;
 +              }
 +              err = usb_driver_claim_interface(&ua101_driver,
 +                                               ua->intf[i], ua);
 +              if (err < 0) {
 +                      ua->intf[i] = NULL;
 +                      err = -EBUSY;
 +                      goto probe_error;
 +              }
 +      }
 +
 +      snd_card_set_dev(card, &interface->dev);
 +
 +      err = detect_usb_format(ua);
 +      if (err < 0)
 +              goto probe_error;
 +
 +      name = usb_id->idProduct == 0x0044 ? "UA-1000" : "UA-101";
 +      strcpy(card->driver, "UA-101");
 +      strcpy(card->shortname, name);
 +      usb_make_path(ua->dev, usb_path, sizeof(usb_path));
 +      snprintf(ua->card->longname, sizeof(ua->card->longname),
 +               "EDIROL %s (serial %s), %u Hz at %s, %s speed", name,
 +               ua->dev->serial ? ua->dev->serial : "?", ua->rate, usb_path,
 +               ua->dev->speed == USB_SPEED_HIGH ? "high" : "full");
 +
 +      err = alloc_stream_buffers(ua, &ua->capture);
 +      if (err < 0)
 +              goto probe_error;
 +      err = alloc_stream_buffers(ua, &ua->playback);
 +      if (err < 0)
 +              goto probe_error;
 +
 +      err = alloc_stream_urbs(ua, &ua->capture, capture_urb_complete);
 +      if (err < 0)
 +              goto probe_error;
 +      err = alloc_stream_urbs(ua, &ua->playback, playback_urb_complete);
 +      if (err < 0)
 +              goto probe_error;
 +
 +      err = snd_pcm_new(card, name, 0, 1, 1, &ua->pcm);
 +      if (err < 0)
 +              goto probe_error;
 +      ua->pcm->private_data = ua;
 +      strcpy(ua->pcm->name, name);
 +      snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_PLAYBACK, &playback_pcm_ops);
 +      snd_pcm_set_ops(ua->pcm, SNDRV_PCM_STREAM_CAPTURE, &capture_pcm_ops);
 +
 +      err = snd_usbmidi_create(card, ua->intf[INTF_MIDI],
 +                               &ua->midi_list, &midi_quirk);
 +      if (err < 0)
 +              goto probe_error;
 +
 +      err = snd_card_register(card);
 +      if (err < 0)
 +              goto probe_error;
 +
 +      usb_set_intfdata(interface, ua);
 +      devices_used |= 1 << card_index;
 +
 +      mutex_unlock(&devices_mutex);
 +      return 0;
 +
 +probe_error:
 +      free_usb_related_resources(ua, interface);
 +      snd_card_free(card);
 +      mutex_unlock(&devices_mutex);
 +      return err;
 +}
 +
 +static void ua101_disconnect(struct usb_interface *interface)
 +{
 +      struct ua101 *ua = usb_get_intfdata(interface);
 +      struct list_head *midi;
 +
 +      if (!ua)
 +              return;
 +
 +      mutex_lock(&devices_mutex);
 +
 +      set_bit(DISCONNECTED, &ua->states);
 +      wake_up(&ua->rate_feedback_wait);
 +
 +      /* make sure that userspace cannot create new requests */
 +      snd_card_disconnect(ua->card);
 +
 +      /* make sure that there are no pending USB requests */
 +      __list_for_each(midi, &ua->midi_list)
 +              snd_usbmidi_disconnect(midi);
 +      abort_alsa_playback(ua);
 +      abort_alsa_capture(ua);
 +      mutex_lock(&ua->mutex);
 +      stop_usb_playback(ua);
 +      stop_usb_capture(ua);
 +      mutex_unlock(&ua->mutex);
 +
 +      free_usb_related_resources(ua, interface);
 +
 +      devices_used &= ~(1 << ua->card_index);
 +
 +      snd_card_free_when_closed(ua->card);
 +
 +      mutex_unlock(&devices_mutex);
 +}
 +
 +static struct usb_device_id ua101_ids[] = {
 +      { USB_DEVICE(0x0582, 0x0044) }, /* UA-1000 high speed */
 +      { USB_DEVICE(0x0582, 0x007d) }, /* UA-101 high speed */
 +      { USB_DEVICE(0x0582, 0x008d) }, /* UA-101 full speed */
 +      { }
 +};
 +MODULE_DEVICE_TABLE(usb, ua101_ids);
 +
 +static struct usb_driver ua101_driver = {
 +      .name = "snd-ua101",
 +      .id_table = ua101_ids,
 +      .probe = ua101_probe,
 +      .disconnect = ua101_disconnect,
 +#if 0
 +      .suspend = ua101_suspend,
 +      .resume = ua101_resume,
 +#endif
 +};
 +
 +static int __init alsa_card_ua101_init(void)
 +{
 +      return usb_register(&ua101_driver);
 +}
 +
 +static void __exit alsa_card_ua101_exit(void)
 +{
 +      usb_deregister(&ua101_driver);
 +      mutex_destroy(&devices_mutex);
 +}
 +
 +module_init(alsa_card_ua101_init);
 +module_exit(alsa_card_ua101_exit);