9 years agoUSB: rename usb_buffer_alloc() and usb_buffer_free() users
Daniel Mack [Mon, 12 Apr 2010 11:17:25 +0000]
USB: rename usb_buffer_alloc() and usb_buffer_free() users

For more clearance what the functions actually do,

  usb_buffer_alloc() is renamed to usb_alloc_coherent()
  usb_buffer_free()  is renamed to usb_free_coherent()

They should only be used in code which really needs DMA coherency.

All call sites have been changed accordingly, except for staging
drivers.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Pedro Ribeiro <pedrib@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: Short new 'graph for usb-serial.txt
Eric Raymond [Thu, 15 Apr 2010 05:35:50 +0000]
USB: Short new 'graph for usb-serial.txt

Documentation update

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: devices: fix Coding Styles
Carlos Sánchez Acosta [Wed, 14 Apr 2010 11:58:53 +0000]
USB: devices: fix Coding Styles

Fixed coding styles in the config usb driver.

Signed-off-by: Carlos Sánchez Acosta <csanchez@neurowork.net>
Signed-off-by: Alejandro Sánchez Acosta <asanchez@neurowork.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: ueagle: fix Coding Styles
Javier Blanco de Torres (Neurowork) [Mon, 12 Apr 2010 07:21:13 +0000]
USB: ueagle: fix Coding Styles

Fixed coding styles in the ueagle usb driver.

Signed-off-by: Javier Blanco de Torres <jblanco@neurowork.net>
Signed-off-by: Alejandro Sánchez Acosta <asanchez@neurowork.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: omap: switch to subsys_initcall for isp1301 transceiver
Viral Mehta [Tue, 6 Apr 2010 06:21:00 +0000]
USB: omap: switch to subsys_initcall for isp1301 transceiver

isp1301 transceiver driver init should be done before we do ohci omap init

Signed-off-by: Viral Mehta <viral.mehta@lntinfotech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: ehci: Elide I/O watchdog on NEC parts
David Miller [Wed, 7 Apr 2010 01:26:03 +0000]
USB: ehci: Elide I/O watchdog on NEC parts

I've been running with this patch on my Niagara2 boxes for some time
and have not seen any ill effects yet.  Maybe we can stash this into
the USB tree to get exposure for some time in -next and if anything
crops up we can simply revert?

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: storage: Remove unneeded SL11R unusual_devs entry
Phil Dibowitz [Sun, 4 Apr 2010 12:21:01 +0000]
USB: storage: Remove unneeded SL11R unusual_devs entry

It seems unlikely that this entry is needed anymore since the kernel
has logic to handle devices that poorly respond to INQUIRY. Since we
now have another entry with the same VID/PID but different flags, it's
a good time to attempt to clean this up.

The original submitter's email no longer works, so we'll keep an eye
out for any regression reports.

Signed-off-by: Phil Dibowitz <phil@ipom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: Support for allocating USB 3.0 streams.
Sarah Sharp [Mon, 5 Apr 2010 17:55:58 +0000]
USB: Support for allocating USB 3.0 streams.

Bulk endpoint streams were added in the USB 3.0 specification.  Streams
allow a device driver to overload a bulk endpoint so that multiple
transfers can be queued at once.

The device then decides which transfer it wants to work on first, and can
queue part of a transfer before it switches to a new stream.  All this
switching is invisible to the device driver, which just gets a completion
for the URB.  Drivers that use streams must be able to handle URBs
completing in a different order than they were submitted to the endpoint.

This requires adding new API to set up xHCI data structures to support
multiple queues ("stream rings") per endpoint.  Drivers will allocate a
number of stream IDs before enqueueing URBs to the bulk endpoints of the
device, and free the stream IDs in their disconnect function.  See
Documentation/usb/bulk-streams.txt for details.

The new mass storage device class, USB Attached SCSI Protocol (UASP), uses
these streams API.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: xhci: Correct assumptions about number of rings per endpoint.
Sarah Sharp [Fri, 2 Apr 2010 22:34:43 +0000]
USB: xhci: Correct assumptions about number of rings per endpoint.

Much of the xHCI driver code assumes that endpoints only have one ring.
Now an endpoint can have one ring per enabled stream ID, so correct that
assumption.  Use functions that translate the stream_id field in the URB
or the DMA address of a TRB into the correct stream ring.

Correct the polling loop to print out all enabled stream rings.  Make the
URB cancellation routine find the correct stream ring if the URB has
stream_id set.  Make sure the URB enqueueing routine does the same.  Also
correct the code that handles stalled/halted endpoints.

Check that commands and registers that can take stream IDs handle them
properly.  That includes ringing an endpoint doorbell, resetting a
stalled/halted endpoint, and setting a transfer ring dequeue pointer
(since that command can set the dequeue pointer in a stream context or an
endpoint context).

Correct the transfer event handler to translate a TRB DMA address into the
stream ring it was enqueued to.  Make the code to allocate and prepare TD
structures adds the TD to the right td_list for the stream ring.  Make
sure the code to give the first TRB in a TD to the hardware manipulates
the correct stream ring.

When an endpoint stalls, store the stream ID of the stream ring that
stalled in the xhci_virt_ep structure.  Use that instead of the stream ID
in the URB, since an URB may be re-used after it is given back after a
non-control endpoint stall.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: xhci: Add memory allocation for USB3 bulk streams.
Sarah Sharp [Fri, 2 Apr 2010 22:34:16 +0000]
USB: xhci: Add memory allocation for USB3 bulk streams.

Add support for allocating streams for USB 3.0 bulk endpoints.  See
Documentation/usb/bulk-streams.txt for more information about how and why
you would use streams.

When an endpoint has streams enabled, instead of having one ring where all
transfers are enqueued to the hardware, it has several rings.  The ring
dequeue pointer in the endpoint context is changed to point to a "Stream
Context Array".  This is basically an array of pointers to transfer rings,
one for each stream ID that the driver wants to use.

The Stream Context Array size must be a power of two, and host controllers
can place a limit on the size of the array (4 to 2^16 entries).  These
two facts make calculating the size of the Stream Context Array and the
number of entries actually used by the driver a bit tricky.

Besides the Stream Context Array and rings for all the stream IDs, we need
one more data structure.  The xHCI hardware will not tell us which stream
ID a transfer event was for, but it will give us the slot ID, endpoint
index, and physical address for the TRB that caused the event.  For every
endpoint on a device, add a radix tree to map physical TRB addresses to
virtual segments within a stream ring.

Keep track of whether an endpoint is transitioning to using streams, and
don't enqueue any URBs while that's taking place.  Refuse to transition an
endpoint to streams if there are already URBs enqueued for that endpoint.

We need to make sure that freeing streams does not fail, since a driver's
disconnect() function may attempt to do this, and it cannot fail.
Pre-allocate the command structure used to issue the Configure Endpoint
command, and reserve space on the command ring for each stream endpoint.
This may be a bit overkill, but it is permissible for the driver to
allocate all streams in one call and free them in multiple calls.  (It is
not advised, however, since it is a waste of resources and time.)

Even with the memory and ring room pre-allocated, freeing streams can
still fail because the xHC rejects the configure endpoint command.  It is
valid (by the xHCI 0.96 spec) to return a "Bandwidth Error" or a "Resource
Error" for a configure endpoint command.  We should never see a Bandwidth
Error, since bulk endpoints do not effect the reserved bandwidth.  The
host controller can still return a Resource Error, but it's improbable
since the xHC would be going from a more resource-intensive configuration
(streams) to a less resource-intensive configuration (no streams).

If the xHC returns a Resource Error, the endpoint will be stuck with
streams and will be unusable for drivers.  It's an unavoidable consequence
of broken host controller hardware.

Includes bug fixes from the original patch, contributed by
John Youn <John.Youn@synopsys.com> and Andy Green <AGreen@PLXTech.com>

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: Add stream ID field to struct urb.
Sarah Sharp [Fri, 2 Apr 2010 22:34:10 +0000]
USB: Add stream ID field to struct urb.

Bulk endpoint streams were added in the USB 3.0 specification.  Streams
allow a device driver to overload a bulk endpoint so that multiple
transfers can be queued at once.

Add a new field, stream_id, to struct urb so that USB 3.0 drivers can
specify which stream they want the URB to be queued to.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: Add parsing of SuperSpeed endpoint companion descriptor.
Sarah Sharp [Fri, 2 Apr 2010 22:33:56 +0000]
USB: Add parsing of SuperSpeed endpoint companion descriptor.

Allow the xHCI drivers (and any new USB 3.0 drivers) to parse the
SuperSpeed endpoint companion descriptor to find the maximum number of
bulk endpoint streams the endpoint supports.  This is used to calculate
the maximum total number of streams the driver can allocate.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: qcserial: Add support for Qualcomm Gobi 2000 devices
Anssi Hannula [Thu, 1 Apr 2010 16:31:10 +0000]
USB: qcserial: Add support for Qualcomm Gobi 2000 devices

Add ids for Qualcomm Gobi 2000 QDL and Modem modes. Gobi 2000 has a
single altsetting in QDL mode, so adapt code to handle that.

Firmware upload protocol is also slightly different, with an
additional firmware file. However, qcserial doesn't handle firmware
uploading.

Tested on Lenovo Thinkpad T510.

Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: qcserial: Use generic USB wwan code
Matthew Garrett [Thu, 1 Apr 2010 16:31:09 +0000]
USB: qcserial: Use generic USB wwan code

Make qcserial use the generic USB wwan code. This should result in a
performance improvement.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: option: Use generic USB wwan code
Matthew Garrett [Thu, 1 Apr 2010 16:31:08 +0000]
USB: option: Use generic USB wwan code

As this code was simply factored out of option, this is a simple
conversion.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb serial: Add generic USB wwan support
Matthew Garrett [Thu, 1 Apr 2010 16:31:07 +0000]
usb serial: Add generic USB wwan support

The generic USB serial code is ill-suited for high-speed USB wwan devices,
resulting in the option driver. However, other non-option devices may also
gain similar benefits from not using the generic code. Factorise out the
non-option specific code from the option driver and make it available to
other users.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: deprecate the power/level sysfs attribute
Alan Stern [Fri, 2 Apr 2010 17:22:16 +0000]
USB: deprecate the power/level sysfs attribute

This patch (as1367) deprecates USB's power/level sysfs attribute in
favor of the power/control attribute provided by the runtime PM core.
The two attributes do the same thing.

It would be nice to replace power/level with a symlink to
power/control, but at the moment sysfs doesn't offer any way to do so.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: use PM core routines to enable/disable autosuspend
Alan Stern [Fri, 2 Apr 2010 17:22:09 +0000]
USB: use PM core routines to enable/disable autosuspend

This patch (as1366) replaces the private routines
usb_enable_autosuspend() and usb_disable_autosuspend() with calls to
the standard pm_runtime_allow() and pm_runtime_forbid() functions in
the runtime PM framework.  They do the same thing.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: don't enable remote wakeup by default
Alan Stern [Fri, 2 Apr 2010 17:21:33 +0000]
USB: don't enable remote wakeup by default

This patch (as1364) avoids enabling remote wakeup by default on all
non-root-hub USB devices.  Individual drivers or userspace will have
to enable it wherever it is needed, such as for keyboards or network
interfaces.  Note: This affects only system sleep, not autosuspend.

External hubs will continue to relay wakeup requests received from
downstream through their upstream port, even when remote wakeup is not
enabled for the hub itself.  Disabling remote wakeup on a hub merely
prevents it from generating wakeup requests in response to connect,
disconnect, and overcurrent events.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: improve runtime remote wakeup settings
Alan Stern [Fri, 2 Apr 2010 17:18:50 +0000]
USB: improve runtime remote wakeup settings

This patch (as1362) adjusts the way the USB autosuspend routines
handle remote-wakeup settings.  They aren't supposed to use
device_may_wakeup(); that test is intended only for system sleep, not
runtime power management.  Instead the code checks to see if any
interface drivers need remote wakeup; if they do then it is enabled,
provided the device is capable of it.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: fix usbmon and DMA mapping for scatter-gather URBs
Alan Stern [Fri, 2 Apr 2010 17:27:28 +0000]
USB: fix usbmon and DMA mapping for scatter-gather URBs

This patch (as1368) fixes a rather obscure bug in usbmon: When tracing
URBs sent by the scatter-gather library, it accesses the data buffers
while they are still mapped for DMA.

The solution is to move the mapping and unmapping out of the s-g
library and into the usual place in hcd.c.  This requires the addition
of new URB flag bits to describe the kind of mapping needed, since we
have to call dma_map_sg() if the HCD supports native scatter-gather
operation and dma_map_page() if it doesn't.  The nice thing about
having the new flags is that they simplify the testing for unmapping.

The patch removes the only caller of usb_buffer_[un]map_sg(), so those
functions are #if'ed out.  A later patch will remove them entirely.

As a result of this change, urb->sg will be set in situations where
it wasn't set previously.  Hence the xhci and whci drivers are
adjusted to test urb->num_sgs instead, which retains its original
meaning and is nonzero only when the HCD has to handle a scatterlist.

Finally, even when a submission error occurs we don't want to hand
URBs to usbmon before they are unmapped.  The submission path is
rearranged so that map_urb_for_dma() is called only for non-root-hub
URBs and unmap_urb_for_dma() is called immediately after a submission
error.  This simplifies the error handling.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: pxa27x_udc: use four bits to store endpoint addresses
Matt Reimer [Thu, 1 Apr 2010 20:44:04 +0000]
USB: pxa27x_udc: use four bits to store endpoint addresses

Endpoint addresses on pxa27x can be programmed as 1-15, but since
only three bits were being used to store the endpoint number it
was possible to overflow.

Signed-off-by: Matt Reimer <mreimer@sdgsystems.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: otg: twl4030: use the global ULPI register definitions
Heikki Krogerus [Wed, 31 Mar 2010 07:18:05 +0000]
usb: otg: twl4030: use the global ULPI register definitions

Rely on the global ULPI register definitions

Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: otg: ulpi: use the global ULPI register definitions
Heikki Krogerus [Mon, 3 May 2010 06:13:02 +0000]
USB: otg: ulpi: use the global ULPI register definitions

Rely on the global ULPI register definitions

Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: otg: add global ULPI register definitions
Heikki Krogerus [Mon, 3 May 2010 06:13:01 +0000]
usb: otg: add global ULPI register definitions

Definitions for registers defined by ULPI specification v1.1.

Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: gadget: f_mass_storage: per function
Michal Nazarewicz [Mon, 29 Mar 2010 12:01:32 +0000]
USB: gadget: f_mass_storage: per function

Mass Storage Function (MSF) used the same descriptors for each
usb_function instance (meaning usb_function::descriptors of different
functions pointed to the same static area (the same was true for
usb_function::hs_descriptors)).

This would leads to problems if MSF were used in several USB
configurations with different interface and/or endpoint numbers.
Descriptors for all configurations would have interface/endpoint
numbers overwritten by the values valid for the last configuration.

This patch adds code that copies the descriptors each time MSF is
added to USB configuration (that is for each usb_function).

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>

9 years agousb: gadget: Allow larger configuration descriptors
Robert Lukassen [Tue, 30 Mar 2010 12:14:01 +0000]
usb: gadget: Allow larger configuration descriptors

The composite framework allows gadgets with more than one function. This
can lead to situations where the configuration descriptor is larger than
the maximum of 512 bytes currently allowed by the composite framework.
This patch proposes to double that limit to 1024.

Signed-off-by: Robert Lukassen <robert.lukassen@tomtom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: add ulpi access operations
Heikki Krogerus [Thu, 25 Mar 2010 11:25:28 +0000]
usb: musb: add ulpi access operations

This adds helper functions for ULPI access, and implements
otg_io_access_ops for musb.

Signed-off-by: Heikki Krogerus <ext-heikki.krogerus@nokia.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: Add extvbus in musb_board_data
Ajay Kumar Gupta [Thu, 25 Mar 2010 11:25:27 +0000]
usb: musb: Add extvbus in musb_board_data

EXTVBUS programming is required by OMAP3EVM REV >=E to supply 500mA
power so adding a flag which can be used by musb driver to program
EXTVBUS.

Signed-off-by: Ajay Kumar Gupta <ajay.gupta@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: Makefile: remove unexistent config option
Felipe Balbi [Thu, 25 Mar 2010 11:25:26 +0000]
usb: musb: Makefile: remove unexistent config option

Remove the unexistent CONFIG_USB_INVENTRA_MUSB_HAS_AHB_ID
option from our Makefile.

Problem reported by Sergei Shtylyov <sshtylyov@mvista.com>

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: omap2430.c: remove unnecessary includes
Anand Gadiyar [Thu, 25 Mar 2010 11:25:25 +0000]
usb: musb: omap2430.c: remove unnecessary includes

We don't need mach-types and hardware.h

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: omap2430: remove unused define
Anand Gadiyar [Thu, 25 Mar 2010 11:25:24 +0000]
usb: musb: omap2430: remove unused define

get_cpu_rev() is unused in this driver. It is probably legacy
code. So remove it.

Signed-off-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoMUSB: Blackfin: remove musb_platform_{suspend|resume}()
Sergei Shtylyov [Thu, 25 Mar 2010 11:25:23 +0000]
MUSB: Blackfin: remove musb_platform_{suspend|resume}()

These functions do nothing and also are both unnecessarily 'extern'; actually,
musb_platform_resume() in not even called...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoMUSB: OMAP: make musb_platform_suspend() 'static'
Sergei Shtylyov [Thu, 25 Mar 2010 11:25:22 +0000]
MUSB: OMAP: make musb_platform_suspend() 'static'

This function is only called inside omap2430.c...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoMUSB: Blackfin: remove bfin_vbus_power()
Sergei Shtylyov [Thu, 25 Mar 2010 11:25:21 +0000]
MUSB: Blackfin: remove bfin_vbus_power()

This function does nothing...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoMUSB: OMAP: remove omap_vbus_power()
Sergei Shtylyov [Thu, 25 Mar 2010 11:25:20 +0000]
MUSB: OMAP: remove omap_vbus_power()

This function does nothing...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: musb: support host/gadget role switching on Blackfin parts
Cliff Cai [Thu, 25 Mar 2010 11:25:19 +0000]
USB: musb: support host/gadget role switching on Blackfin parts

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: debugfs: musb_exit_debugfs() can be called on probe
Felipe Balbi [Thu, 25 Mar 2010 11:25:18 +0000]
usb: musb: debugfs: musb_exit_debugfs() can be called on probe

when we fail to probe(), we can call musb_exit_debugfs().
Allow that by removing section annotations.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: option.c: option_indat_callback: Resubmit some unsuccessful URBs
James Maki [Sun, 21 Mar 2010 17:53:59 +0000]
USB: option.c: option_indat_callback: Resubmit some unsuccessful URBs

All unsuccessful (non-zero status) URBs were being dropped. After N_IN_URBs are
dropped you will no longer be able to receive data.

This patch resubmits unsuccessful URBs unless the status indicates that it should
be terminated. The statuses that indicate the URB should be terminated was
gathered from other similar drivers.

Signed-off-by: James Maki <jamescmaki@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: gadget: add HID gadget driver
Fabien Chouteau [Thu, 8 Apr 2010 07:31:15 +0000]
USB: gadget: add HID gadget driver

g_hid is a USB gadget driver implementing the Human Interface Device class
specification. The driver handles basic HID protocol handling in the
kernel, and allows userspace to read/write HID reports trough /dev/hidgX
character devices.

Signed-off-by: Fabien Chouteau <fabien.chouteau@barco.com>
Signed-off-by: Peter Korsgaard <peter.korsgaard@barco.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: ftdi_sio: fix some coding style issues
Johan Hovold [Wed, 17 Mar 2010 22:06:09 +0000]
USB: ftdi_sio: fix some coding style issues

Remove unnecessary comments stating function names at (some)
opening/closing braces.
Fix some whitespace issues.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: generalise write buffer preparation
Johan Hovold [Wed, 17 Mar 2010 22:06:08 +0000]
USB: serial: generalise write buffer preparation

Generalise write buffer preparation.

This allows for drivers to manipulate (e.g. add headers) to bulk out
data before it is sent.

This adds a new function pointer to usb_serial_driver:

int (*prepare_write_buffer)(struct usb_serial_port *port,
void **dest, size_t size, const void *src, size_t count);

The function is generic and can be used with either kfifo-based or
multi-urb writes:

If *dest is NULL the implementation should allocate dest.
If src is NULL the implementation should use the port write fifo.

If not set, a generic implementation is used which simply uses memcpy or
kfifo_out.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: re-implement multi-urb writes in generic driver
Johan Hovold [Wed, 17 Mar 2010 22:06:07 +0000]
USB: serial: re-implement multi-urb writes in generic driver

Use dynamic transfer buffer sizes since it is more efficient to let the
host controller do the partitioning to fit endpoint size. This way we
also do not use more than one urb per write request.

Replace max_in_flight_urbs with multi_urb_write flag in struct
usb_serial_driver to enable multi-urb writes.

Use MAX_TX_URBS=40 and a max buffer size of PAGE_SIZE to prevent DoS
attacks.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: allow custom multi-urb write bulk callbacks
Johan Hovold [Wed, 17 Mar 2010 22:06:06 +0000]
USB: serial: allow custom multi-urb write bulk callbacks

Allow drivers to implement their own multi-urb write bulk callbacks as
we do for single urb writes.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: usb_debug: use the generic kfifo-based write implementation
Johan Hovold [Wed, 17 Mar 2010 22:06:05 +0000]
USB: usb_debug: use the generic kfifo-based write implementation

Use the generic kfifo-based write implementation rather than allowing up
to 4000 8 byte urbs in the host stack queues.

Cc: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: pl2303: use generic close
Johan Hovold [Wed, 17 Mar 2010 22:06:04 +0000]
USB: pl2303: use generic close

Use usb_serial_generic_close to kill the read and write urbs and to
reset the write fifo.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: pl2303: switch to generic write implementation
Johan Hovold [Wed, 17 Mar 2010 22:06:03 +0000]
USB: pl2303: switch to generic write implementation

Replace custom fifo-based write implementation with the generic
kfifo-based one.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: clean up generic write start busy test
Johan Hovold [Wed, 17 Mar 2010 22:06:02 +0000]
USB: serial: clean up generic write start busy test

Submit write urb if it is not already in use and we have buffered data.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: clean up some error and debug messages in generic driver
Johan Hovold [Wed, 17 Mar 2010 22:06:01 +0000]
USB: serial: clean up some error and debug messages in generic driver

Clean up error messages on usb_submit_urb failure.
Remove debug message on zero-length writes.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: ftdi_sio: switch to generic read implementation
Johan Hovold [Wed, 17 Mar 2010 22:06:00 +0000]
USB: ftdi_sio: switch to generic read implementation

Switch to generic read implementation and use process_read_urb to do
device specific processing (handle line status).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: export generic throttle and unthrottle
Johan Hovold [Wed, 17 Mar 2010 22:05:59 +0000]
USB: serial: export generic throttle and unthrottle

Allow drivers to use the generic throttle and unthrottle implementation.
This makes sense for drivers using the generic read functionality.

Note that drivers need to set these explicitly in order to enable them
(i.e., we do not set them at port probe if not defined).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: pl2303: switch to generic read implementation
Johan Hovold [Wed, 17 Mar 2010 22:05:58 +0000]
USB: pl2303: switch to generic read implementation

Use generic read implementation and use process_read_urb to do device
specific processing (handle line status).

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: generalise generic read implementation
Johan Hovold [Wed, 17 Mar 2010 22:05:57 +0000]
USB: serial: generalise generic read implementation

Add process_read_urb to usb_serial_driver so that a driver can rely on
the generic read (and throttle) mechanism but still do device specific
processing of incoming data (such as adding tty_flags before pushing to
line discipline).

The default generic implementation handles sysrq for consoles but
otherwise simply pushes to tty.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: clean up read processing in generic driver
Johan Hovold [Wed, 17 Mar 2010 22:05:56 +0000]
USB: serial: clean up read processing in generic driver

Always process and flush read urb, but only resubmit when not throttled.
The new tty-layer supply plenty of slack so there is really no need to
cache and delay processing of a single urb while throttled.

Note that unthrottle now submits using GFP_KERNEL as we are not in
atomic context (so there is no need to save irq state either).

Note also that the process_read_urb function could be added to
usb_serial_driver should any driver need to do any device specific
processing.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: cp210x: use generic submit_read_urb at open
Johan Hovold [Wed, 17 Mar 2010 22:05:55 +0000]
USB: cp210x: use generic submit_read_urb at open

There is no need to initialise the read urb as this is done at port
probe.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: remove unnecessary re-initialisation of generic urbs
Johan Hovold [Wed, 17 Mar 2010 22:05:54 +0000]
USB: serial: remove unnecessary re-initialisation of generic urbs

The generic read and write bulk urbs are initialised when allocated in
usb_serial_probe. The only field that needs to be updated after that is
the transfer_buffer_length of the write urb.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: refactor read urb submission in generic driver
Johan Hovold [Wed, 17 Mar 2010 22:05:53 +0000]
USB: serial: refactor read urb submission in generic driver

Use the already exported function for submitting the read urb associated
with a usb_serial_port.

Make sure it returns the result of usb_submit_urb and rename to the
more descriptive usb_serial_generic_submit_read_urb.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: refactor generic close
Johan Hovold [Wed, 17 Mar 2010 22:00:45 +0000]
USB: serial: refactor generic close

Export usb_serial_generic_close so that drivers can easily kill the read
and write urb and make sure that the write fifo is reset.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: clear fifo on close
Johan Hovold [Wed, 17 Mar 2010 22:00:44 +0000]
USB: serial: clear fifo on close

Make sure fifo is emptied on close.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: fix missing locking on fifo in write callback
Johan Hovold [Wed, 17 Mar 2010 22:00:43 +0000]
USB: serial: fix missing locking on fifo in write callback

On errors the fifo was reset without any locking. This could race with
write which do kfifo_put and perhaps also chars_in_buffer and write_room.

Every other access to the fifo is protected using the port lock so
better add it to the error path as well.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: fix generic chars_in_buffer
Johan Hovold [Wed, 17 Mar 2010 22:00:42 +0000]
USB: serial: fix generic chars_in_buffer

Make sure chars_in_buffer accounts also for data in host stack queues.

This fixes the problem with tty_wait_until_sent returning too soon at
close which could cause the final write urb to be cancelled.

Reported-by: Pete Zaitcev <zaitcev@redhat.com>
Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: pl2303: increase bulk-in buffer size to 256 byte
Johan Hovold [Wed, 17 Mar 2010 22:00:41 +0000]
USB: pl2303: increase bulk-in buffer size to 256 byte

The pl2303 requires a bulk-in buffer larger than endpoint size to keep
up at high baudrates without loosing data.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: pl2303: increase the bulk-out buffer size to 256 byte
Johan Hovold [Wed, 17 Mar 2010 22:00:40 +0000]
USB: pl2303: increase the bulk-out buffer size to 256 byte

Increase the bulk-out buffer size from 64 to 256 byte.

This gives a significant increase in throughput already at 1Mbaud as well
as lowered CPU usage. The buffer is big enough to keep up also at 3Mbaud
(128b would not suffice).

        64b         256b
921k:   640 KB/s    870 KB/s
3M:     640 KB/s    2520 KB/s

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: cp210x: increase bulk-in buffer size to 256 byte
Johan Hovold [Wed, 17 Mar 2010 22:00:39 +0000]
USB: cp210x: increase bulk-in buffer size to 256 byte

The cp210x requires a bulk-in buffer larger than endpoint size to keep
up at high baudrates without loosing data.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: cp210x: increase the bulk-out buffer size to 256 byte
Johan Hovold [Wed, 17 Mar 2010 22:00:38 +0000]
USB: cp210x: increase the bulk-out buffer size to 256 byte

Increase the bulk-out buffer size from 64 to 256 byte.

This gives a significant increase in throughput already at 1Mbaud
(e.g. 710 instead of 640 KB/s) as well as lowered CPU usage.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: serial: allow drivers to define bulk buffer sizes
Johan Hovold [Wed, 17 Mar 2010 22:00:37 +0000]
USB: serial: allow drivers to define bulk buffer sizes

Allow drivers to define custom bulk in/out buffer sizes in struct
usb_serial_driver. If not set, fall back to the default buffer size
which matches the endpoint size.

Three drivers are currently freeing the pre-allocated buffers and
allocating larger ones to achieve this at port probe (ftdi_sio) or even
at port open (ipaq and iuu_phoenix), which needless to say is suboptimal.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: Add a new quirk: USB_QUIRK_HONOR_BNUMINTERFACES
Hans de Goede [Mon, 29 Mar 2010 10:03:17 +0000]
USB: Add a new quirk: USB_QUIRK_HONOR_BNUMINTERFACES

Add a new quirk USB_QUIRK_HONOR_BNUMINTERFACES, when this quirk is
set and a device has more interface descriptors in a configuration
then it claims to have in config->bNumInterfaces, ignore all additional
interfaces.

This is needed for devices which try to hide unused interfaces by only
lowering config->bNumInterfaces, and which can't handle if you try to talk
to the "hidden" interfaces.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: fix serial build when SYSRQ is disabled
Randy Dunlap [Thu, 25 Mar 2010 18:29:16 +0000]
usb: fix serial build when SYSRQ is disabled

Fix build error when CONFIG_MAGIC_SYSRQ is not enabled:

drivers/usb/serial/generic.c:566: error: implicit declaration of function 'handle_sysrq'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB Serial Driver: ZIO Motherboard
Vijay Kumar [Wed, 10 Mar 2010 15:47:56 +0000]
USB Serial Driver: ZIO Motherboard

Add ZIO Motherboard USB serial interface driver.

Signed-off-by: Vijay Kumar B. <vijaykumar@zilogic.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb-console: pass baud from console to the initial tty open
Jason Wessel [Tue, 16 Mar 2010 21:05:44 +0000]
usb-console: pass baud from console to the initial tty open

The usb console code has had a long standing problem of not being able
to pass the baud rate from the kernel argument console=ttyUSB0,BAUD
down to the initial tty open, unless you were willing to settle for
9600 baud.

The solution is to directly use tty_init_termios() in
usb_console_setup() as this will preserve any changes to the initial
termios setting on future opens.

CC: Alan Cox <alan@linux.intel.com>
CC: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: f_mass_storage: dynamic buffers for better alignment
Michal Nazarewicz [Mon, 15 Mar 2010 20:38:31 +0000]
USB: f_mass_storage: dynamic buffers for better alignment

"Static" buffers in fsg_buffhd structure (ie. fields which are arrays
rather then pointers to dynamically allocated memory) are not aligned
to any "big" power of two which may lead to poor DMA performance
(copying "by hand" of head or tail) or no DMA at all even if otherwise
hardware supports it.

Therefore, this patch makes mass storage function use kmalloc()ed
buffers which are (because of their size) page aligned (which should
be enough for any hardware).

Signed-off-by: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: hsdma: use musb_read/writel
Felipe Balbi [Fri, 12 Mar 2010 08:29:13 +0000]
usb: musb: hsdma: use musb_read/writel

... and simplify the was we read/write from/to
DMA COUNT register.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: gadget: support musb-specific test modes
Felipe Balbi [Fri, 12 Mar 2010 08:29:12 +0000]
usb: musb: gadget: support musb-specific test modes

we can support the musb-specific test modes on the
vendor specific range of test selector as stated
on USB Specification Table 9-7 Test Mode Selectors.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: add debugfs support
Felipe Balbi [Fri, 12 Mar 2010 08:29:11 +0000]
usb: musb: add debugfs support

for now only a simple register dump entry (which can
be rather useful on debugging) and a way to start
test modes.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: musb: allow the Blackfin vrsel gpio to be active low
Cliff Cai [Fri, 12 Mar 2010 08:29:10 +0000]
USB: musb: allow the Blackfin vrsel gpio to be active low

Rather than hardcoding the gpio levels for vrsel, allow the platform
resources to handle this so boards can be active high or low.

Signed-off-by: Cliff Cai <cliff.cai@analog.com>
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: MUSB: Add OMAP4 support in MUSB driver
Maulik Mankad [Fri, 12 Mar 2010 08:29:09 +0000]
USB: MUSB: Add OMAP4 support in MUSB driver

This patch adds CONFIG_ARCH_OMAP4 macro within
MUSB driver.

Signed-off-by: Maulik Mankad <x0082077@ti.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: MUSB: Build MUSB driver for OMAP4
Maulik Mankad [Fri, 12 Mar 2010 08:29:08 +0000]
USB: MUSB: Build MUSB driver for OMAP4

This patch updates the Makefile to build the
MUSB driver for OMAP4. It also sets the Kconfig
options for OMAP4.

Signed-off-by: Maulik Mankad <x0082077@ti.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: Set transceiver interface type
Maulik Mankad [Fri, 12 Mar 2010 08:29:07 +0000]
usb: musb: Set transceiver interface type

Program the OTG_INTERFSEL register based on
transcevier type passed from board file.

Adapt signature of musb_platform_init() function
for davinci, blackfin and tusb6010.

Signed-off-by: Maulik Mankad <x0082077@ti.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Cc: Olof Johansson <olof@lixom.net>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb: musb: allow board to pass down fifo mode
Felipe Balbi [Fri, 12 Mar 2010 08:29:06 +0000]
usb: musb: allow board to pass down fifo mode

boards might want to optimize their fifo configuration
to the particular needs of that specific board. Allow
that by moving all related data structures to
<linux/usb/musb.h>

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agousb-serial: Use tty_port version console instead of usb_serial_port
Jason Wessel [Tue, 9 Mar 2010 03:50:12 +0000]
usb-serial: Use tty_port version console instead of usb_serial_port

Replace all instances of using the console variable in struct
usb_serial_port with the struct tty_port version.

CC: Alan Cox <alan@linux.intel.com>
CC: Alan Stern <stern@rowland.harvard.edu>
CC: Oliver Neukum <oliver@neukum.org>
CC: Andrew Morton <akpm@linux-foundation.org>
CC: linux-usb@vger.kernel.org
CC: linux-kernel@vger.kernel.org
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: ehci-au1xxx does not need EHCI IO watchdog
Manuel Lauss [Mon, 8 Mar 2010 19:43:32 +0000]
USB: ehci-au1xxx does not need EHCI IO watchdog

I've been running variations of this patch for well over a year now;
my usual zoo of test devices didn't trigger any ill effects even
under heavy load.  As a nice sideeffect idle-wakeups are reduced
from 20/s to about 2/s (EHCI hub with mouse and kbd).

Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: remove uses of URB_NO_SETUP_DMA_MAP
Alan Stern [Fri, 5 Mar 2010 20:10:17 +0000]
USB: remove uses of URB_NO_SETUP_DMA_MAP

This patch (as1350) removes all usages of coherent buffers for USB
control-request setup-packet buffers.  There's no good reason to
reserve coherent memory for these things; control requests are hardly
ever used in large quantity (the major exception is firmware
transfers, and they aren't time-critical).  Furthermore, only seven
drivers used it.  We might as well always use streaming DMA mappings
for setup-packet buffers, and remove some extra complexity from
usbcore.

The DMA-mapping portion of hcd.c is currently in flux.  A separate
patch will be submitted to remove support for URB_NO_SETUP_DMA_MAP
after everything else settles down.  The removal should go smoothly,
as by then nobody will be using it.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: straighten out port feature vs. port status usage
Alan Stern [Thu, 4 Mar 2010 22:05:08 +0000]
USB: straighten out port feature vs. port status usage

This patch (as1349b) clears up the confusion in many USB host
controller drivers between port features and port statuses.  In mosty
cases it's true that the status bit is in the position given by the
corresponding feature value, but that's not always true and it's not
guaranteed in the USB spec.

There's no functional change, just replacing expressions of the form
(1 << USB_PORT_FEAT_x) with USB_PORT_STAT_x, which has the same value.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: remove bogus USB_PORT_FEAT_*_SPEED symbols
Alan Stern [Thu, 4 Mar 2010 16:32:30 +0000]
USB: remove bogus USB_PORT_FEAT_*_SPEED symbols

This patch (as1348) removes the bogus
USB_PORT_FEAT_{HIGHSPEED,SUPERSPEED} symbols from ch11.h.  No such
features are defined by the USB spec.  (There is a PORT_LOWSPEED
feature, but the spec doesn't mention it except to say that host
software should never use it.)  The speed indicators are port
statuses, not port features.

As a temporary workaround for the xhci-hcd driver, a fictional
USB_PORT_STAT_SUPER_SPEED symbol is added.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
CC: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: remove duplicated #include
Huang Weiyi [Thu, 4 Mar 2010 13:57:51 +0000]
USB: remove duplicated #include

Remove duplicated #include('s) in
  drivers/usb/core/hcd.c

Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: Remove large struct from the stack in USB storage isd200 driver
Ian Munsie [Wed, 3 Mar 2010 00:00:37 +0000]
USB: Remove large struct from the stack in USB storage isd200 driver

The compiler throws the following warning when compiling for a PowerPC 64
bit machine:

drivers/usb/storage/isd200.c:580: warning: the frame size of 2208 bytes is larger than 2048 bytes

There is a struct scsi_device which is placed on the stack and is
largely responsible for such wastage. The struct is just a dummy struct
filled with NULLs and set as the scsi_cmnd->device to make the
usb_stor_Bulk_transport function happy.

This patch makes the struct static, so that it is never placed onto the
stack and silences the compiler warning.

Signed-off-by: Ian Munsie <imunsie@au.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: cdc-acm: make bitfields unsigned
Randy Dunlap [Tue, 2 Mar 2010 22:52:33 +0000]
USB: cdc-acm: make bitfields unsigned

Fix usb/class sparse warnings:

drivers/usb/class/cdc-acm.h:128:34: error: dubious one-bit signed bitfield
drivers/usb/class/cdc-acm.h:129:24: error: dubious one-bit signed bitfield

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: sisusbvga: Remove the BKL from ioctl
Alessio Igor Bogani [Mon, 1 Mar 2010 13:10:56 +0000]
USB: sisusbvga: Remove the BKL from ioctl

Seems to me that BKL is not needed here because necessary locking is already
provided by mutex sisusb->lock.

Also change the returned value to long.

Signed-off-by: Alessio Igor Bogani <abogani@texware.it>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: split hub.h into ch11.h and merge-in hcd.h
Eric Lescouet [Sat, 24 Apr 2010 21:38:17 +0000]
USB: split hub.h into ch11.h and merge-in hcd.h

Base on inputs from Alan Stern, split the hub.h header into:
- new ch11.h header (most of it) containing constants and
  structures from chapter 11 of the USB 2.0 spec.
- a small remaining part being merged into hcd.h.

Signed-of-by: Eric Lescouet <eric@lescouet.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: make hub.h public (drivers dependency)
Eric Lescouet [Sat, 24 Apr 2010 21:34:27 +0000]
USB: make hub.h public (drivers dependency)

The usbcore headers: hcd.h and hub.h are shared between usbcore,
HCDs and a couple of other drivers (e.g. USBIP modules).
So, it makes sense to move them into a more public location and
to cleanup dependency of those modules on kernel internal headers.
This patch moves hub.h from drivers/usb/core into include/linux/usb/

Signed-of-by: Eric Lescouet <eric@lescouet.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: make hcd.h public (drivers dependency)
Eric Lescouet [Sat, 24 Apr 2010 21:21:52 +0000]
USB: make hcd.h public (drivers dependency)

The usbcore headers: hcd.h and hub.h are shared between usbcore,
HCDs and a couple of other drivers (e.g. USBIP modules).
So, it makes sense to move them into a more public location and
to cleanup dependency of those modules on kernel internal headers.
This patch moves hcd.h from drivers/usb/core into include/linux/usb/

Signed-of-by: Eric Lescouet <eric@lescouet.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: xhci: Fix check for room on the ring.
Sarah Sharp [Tue, 18 May 2010 23:05:26 +0000]
USB: xhci: Fix check for room on the ring.

The length of the scatter gather list a driver can enqueue is limited by
the bus' sg_tablesize to 62 entries.  Each entry will be described by at
least one transfer request block (TRB).  If the entry's buffer crosses a
64KB boundary, then that entry will have to be described by two or more
TRBs.  So even if the USB device driver respects sg_tablesize, the whole
scatter list may take more than 62 TRBs to describe, and won't fit on
the ring.

Don't assume that an empty ring means there is enough room on the
transfer ring.  The old code would unconditionally queue this too-large
transfer, and over write the beginning of the transfer.  This would mean
the cycle bit was unchanged in those overwritten transfers, causing the
hardware to think it didn't own the TRBs, and the host would seem to
hang.

Now drivers may see submit_urb() fail with -ENOMEM if the transfers are
too big to fit on the ring.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: xhci: Limit bus sg_tablesize to 62 TRBs.
Sarah Sharp [Tue, 18 May 2010 23:05:21 +0000]
USB: xhci: Limit bus sg_tablesize to 62 TRBs.

When a scatter-gather list is enqueued to the xHCI driver, it translates
each entry into a transfer request block (TRB).  Only 63 TRBs can be
used per ring segment, and there must be one additional TRB reserved to
make sure the hardware does not think the ring is empty (so the enqueue
pointer doesn't equal the dequeue pointer).  Limit the bus sg_tablesize
to 62 TRBs.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoUSB: xhci: Fix issue with set interface after stall.
Sarah Sharp [Thu, 6 May 2010 20:40:08 +0000]
USB: xhci: Fix issue with set interface after stall.

When the USB core installs a new interface, it unconditionally clears the
halts on all the endpoints on the new interface.  Usually the xHCI host
needs to know when an endpoint is reset, so it can change its internal
endpoint state.  In this case, it doesn't care, because the endpoints were
never halted in the first place.

To avoid issuing a redundant Reset Endpoint command, the xHCI driver looks
at xhci_virt_ep->stopped_td to determine if the endpoint was actually
halted.  However, the functions that handle the stall never set that
variable to NULL after it dealt with the stall.  So if an endpoint stalled
and a Reset Endpoint command completed, and then the class driver tried to
install a new alternate setting, the xHCI driver would access the old
xhci_virt_ep->stopped_td pointer.  A similar problem occurs if the
endpoint has been stopped to cancel a transfer.

Signed-off-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

9 years agoLinus 2.6.34
Linus Torvalds [Sun, 16 May 2010 21:17:36 +0000]
Linus 2.6.34

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Sun, 16 May 2010 18:11:53 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6:
  rtnetlink: make SR-IOV VF interface symmetric
  sctp: delete active ICMP proto unreachable timer when free transport
  tcp: fix MD5 (RFC2385) support

9 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Sun, 16 May 2010 18:11:31 +0000]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
  MIPS: Oprofile: Fix Loongson irq handler
  MIPS: N32: Use compat version for sys_ppoll.
  MIPS FPU emulator: allow Cause bits of FCSR to be writeable by ctc1

9 years agortnetlink: make SR-IOV VF interface symmetric
Chris Wright [Sun, 16 May 2010 08:05:45 +0000]
rtnetlink: make SR-IOV VF interface symmetric

Now we have a set of nested attributes:

  IFLA_VFINFO_LIST (NESTED)
    IFLA_VF_INFO (NESTED)
      IFLA_VF_MAC
      IFLA_VF_VLAN
      IFLA_VF_TX_RATE

This allows a single set to operate on multiple attributes if desired.
Among other things, it means a dump can be replayed to set state.

The current interface has yet to be released, so this seems like
something to consider for 2.6.34.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agosctp: delete active ICMP proto unreachable timer when free transport
Wei Yongjun [Sun, 9 May 2010 16:56:07 +0000]
sctp: delete active ICMP proto unreachable timer when free transport

transport may be free before ICMP proto unreachable timer expire, so
we should delete active ICMP proto unreachable timer when transport
is going away.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Acked-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agotcp: fix MD5 (RFC2385) support
Eric Dumazet [Sun, 16 May 2010 07:34:04 +0000]
tcp: fix MD5 (RFC2385) support

TCP MD5 support uses percpu data for temporary storage. It currently
disables preemption so that same storage cannot be reclaimed by another
thread on same cpu.

We also have to make sure a softirq handler wont try to use also same
context. Various bug reports demonstrated corruptions.

Fix is to disable preemption and BH.

Reported-by: Bhaskar Dutta <bhaskie@gmail.com>
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>