9 years agorlimits: add task_struct to update_rlimit_cpu
Jiri Slaby [Fri, 28 Aug 2009 12:05:12 +0000]
rlimits: add task_struct to update_rlimit_cpu

Add task_struct as a parameter to update_rlimit_cpu to be able to set
rlimit_cpu of different task than current.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: James Morris <jmorris@namei.org>

9 years agorlimits: security, add task_struct to setrlimit
Jiri Slaby [Wed, 26 Aug 2009 16:41:16 +0000]
rlimits: security, add task_struct to setrlimit

Add task_struct to task_setrlimit of security_operations to be able to set
rlimit of task other than current.

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Acked-by: Eric Paris <eparis@redhat.com>
Acked-by: James Morris <jmorris@namei.org>

9 years agoMerge master.kernel.org:/home/rmk/linux-2.6-arm
Linus Torvalds [Thu, 15 Jul 2010 00:28:13 +0000]
Merge master.kernel.org:/home/rmk/linux-2.6-arm

* master.kernel.org:/home/rmk/linux-2.6-arm:
  ARM: 6226/1: fix kprobe bug in ldr instruction emulation
  ARM: Update mach-types
  ARM: lockdep: fix unannotated irqs-on
  ARM: 6184/2: ux500: use neutral PRCMU base
  ARM: 6212/1: atomic ops: add memory constraints to inline asm
  ARM: 6211/1: atomic ops: fix register constraints for atomic64_add_unless
  ARM: 6210/1: Do not rely on reset defaults of L2X0_AUX_CTRL

9 years agoMerge branch 'lmb-to-memblock' of git://git.kernel.org/pub/scm/linux/kernel/git/benh...
Linus Torvalds [Thu, 15 Jul 2010 00:27:44 +0000]
Merge branch 'lmb-to-memblock' of git://git./linux/kernel/git/benh/powerpc

* 'lmb-to-memblock' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  lmb: rename to memblock

9 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Thu, 15 Jul 2010 00:27:29 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/fsl-booke: Fix address issue when using relocatable kernels
  powerpc/cpm1: Mark micropatch code/data static and __init
  powerpc/cpm1: Fix build with various CONFIG_*_UCODE_PATCH combinations
  powerpc/cpm: Reintroduce global spi_pram struct (fixes build issue)

9 years agoARM: 6226/1: fix kprobe bug in ldr instruction emulation
Nicolas Pitre [Wed, 14 Jul 2010 04:21:22 +0000]
ARM: 6226/1: fix kprobe bug in ldr instruction emulation

From: Bin Yang <bin.yang@marvell.com>

Cc: stable@kernel.org
Signed-off-by: Bin Yang <bin.yang@marvell.com>
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agolmb: rename to memblock
Yinghai Lu [Mon, 12 Jul 2010 04:36:09 +0000]
lmb: rename to memblock

via following scripts

      FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

      sed -i \
        -e 's/lmb/memblock/g' \
        -e 's/LMB/MEMBLOCK/g' \
        $FILES

      for N in $(find . -name lmb.[ch]); do
        M=$(echo $N | sed 's/lmb/memblock/g')
        mv $N $M
      done

and remove some wrong change like lmbench and dlmb etc.

also move memblock.c from lib/ to mm/

Suggested-by: Ingo Molnar <mingo@elte.hu>
Acked-by: "H. Peter Anvin" <hpa@zytor.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 14 Jul 2010 00:31:11 +0000]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  input: i8042 - add runtime check in x86's i8042_platform_init
  Revert "Input: fixup X86_MRST selects"
  Revert "Input: do not force selecting i8042 on Moorestown"
  x86, mrst: Add i8042_detect API for Moorestwon platform
  x86: Add i8042 pre-detection hook to x86_platform_ops
  x86, platform: Export x86_platform to modules

9 years agoMerge branch 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 14 Jul 2010 00:30:49 +0000]
Merge branch 'kvm-updates/2.6.35' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.35' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: MMU: flush remote tlbs when overwriting spte with different pfn
  KVM: VMX: Fix host MSR_KERNEL_GS_BASE corruption

9 years agoLinux 2.6.35-rc5
Linus Torvalds [Mon, 12 Jul 2010 21:55:33 +0000]
Linux 2.6.35-rc5

9 years agoMerge branch 'arm/defconfig/reduced-v2.6.35-rc1' of git://git.pengutronix.de/git...
Linus Torvalds [Mon, 12 Jul 2010 21:47:01 +0000]
Merge branch 'arm/defconfig/reduced-v2.6.35-rc1' of git://git.pengutronix.de/git/ukl/linux-2.6

* 'arm/defconfig/reduced-v2.6.35-rc1' of git://git.pengutronix.de/git/ukl/linux-2.6:
  ARM: reduce defconfigs

This is a big change, but results in no loss of information, despite us
losing almost 200k lines:

 177 files changed, 652 insertions(+), 194157 deletions(-)

and Grant Likely thinks powerpc can also use the same reduction
technique.

The python script that did the reduction looks like this:

    #! /usr/bin/env python
    # vim: set fileencoding=utf-8 :
    # Copyright (C) 2010 by Uwe Kleine-König <u.kleine-koenig@pengutronix.de>

    import re
    import subprocess
    import os
    import sys

    # This prevents including a timestamp in the .config which makes comparing a
    # bit easier.
    os.environ['KCONFIG_NOTIMESTAMP'] = 'Yes, please'

    # XXX: get these using getopt
    kernel_tree = '' # os.path.join(os.environ['HOME'], 'gsrc', 'linux-2.6')
    arch = 'arm'
    target = sys.argv[1]
    defconfig_src = os.path.join(kernel_tree, 'arch/%s/configs/%s' % (arch, target))

    subprocess.check_call(['make', '-s', 'ARCH=%s' % arch, target])
    origconfig = list(open('.config'))
    config = list(origconfig)
    config_size = os.stat('.config').st_size

    i = 0

    while i < len(config):
        print 'test for %r' % config[i]
        defconfig = open(defconfig_src, 'w')
        defconfig.writelines(config[:i])
        defconfig.writelines(config[i + 1:])
        defconfig.close()
        subprocess.check_call(['make', '-s', 'ARCH=%s' % arch, target])
        if os.stat('.config').st_size == config_size and list(open('.config')) == origconfig:
            del config[i]
        else:
            i += 1

    defconfig = open(defconfig_src, 'w')
    defconfig.writelines(config)
    defconfig.close()

which is pretty self-explanatory.

Acked-by: Nicolas Pitre <nico@fluxnic.net>
Acked-by: Russell King <linux@arm.linux.org.uk>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 12 Jul 2010 21:44:43 +0000]
Merge branch 'fix/hda' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'fix/hda' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Restore cleared pin controls on resume

9 years agoMerge branch 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mcheha...
Linus Torvalds [Mon, 12 Jul 2010 21:44:19 +0000]
Merge branch 'v4l_for_2.6.35' of git://git./linux/kernel/git/mchehab/linux-2.6

* 'v4l_for_2.6.35' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6:
  V4L/DVB: uvc: Fix multiple symbols definitions with UVC gadget and host drivers
  V4L/DVB: v4l: mem2mem_testdev: fix g_fmt NULL pointer dereference
  V4L/DVB: uvcvideo: Power line frequency control doesn't support GET_MIN/MAX/RES
  V4L/DVB: ivtv: Add delay to ensure the decoder always restarts with a blank screen
  V4L/DVB: Documentation: Add the Philips FQ1236 MK5 to video4linux/CARDLIST.tuner
  V4L/DVB: tveeprom: Add an entry for tuner code 168: a TCL M30WTP-4N-E tuner
  V4L/DVB: tuner: Add a definition for the Philips FQ1236 MK5 NTSC tuner
  V4L/DVB: OMAP_VOUT: fix: Module params were not working through bootargs
  V4L/DVB: OMAP_VOUT: fix: Replaced dma-sg with dma-contig
  V4L/DVB: OMAP_VOUT:Build FIX: Rebased against latest DSS2 changes

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Mon, 12 Jul 2010 21:42:21 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: Send Report ID when numbered reports are sent over the control endpoint.
  HID: Enable HID_QUIRK_MULTI_INPUT for Retro Adaptor
  HID: add support for CH Eclipse yoke
  HID: eliminate a double lock in debug code
  HID: ntrig: add support for new firwmare versions
  HID: check for HID_QUIRK_IGNORE during probing
  HID: roccat: fix modules interdependencies

9 years agoMAINTAINERS: fix EDAC-I7CORE file patterns
Joe Perches [Mon, 12 Jul 2010 20:45:49 +0000]
MAINTAINERS: fix EDAC-I7CORE file patterns

File patterns are one per line.
Fixed include file location.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoARM: Update mach-types
Russell King [Mon, 12 Jul 2010 20:10:16 +0000]
ARM: Update mach-types

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoKVM: MMU: flush remote tlbs when overwriting spte with different pfn
Xiao Guangrong [Wed, 30 Jun 2010 08:04:06 +0000]
KVM: MMU: flush remote tlbs when overwriting spte with different pfn

After remove a rmap, we should flush all vcpu's tlb

Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

9 years agoHID: Send Report ID when numbered reports are sent over the control endpoint.
Alan Ott [Wed, 30 Jun 2010 13:50:36 +0000]
HID: Send Report ID when numbered reports are sent over the control endpoint.

The Report ID wasn't sent as part of the payload for reports which were sent
over the control endpoint. This is required by section 8.1 of the HID spec.

Signed-off-by: Alan Ott <alan@signal11.us>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

9 years agoV4L/DVB: uvc: Fix multiple symbols definitions with UVC gadget and host drivers
Laurent Pinchart [Sat, 10 Jul 2010 19:13:05 +0000]
V4L/DVB: uvc: Fix multiple symbols definitions with UVC gadget and host drivers

The UVC gadget driver borrowed code from the UVC host driver without
changing the symbol names. This results in a namespace clash with
multiple definitions of several symbols when compiling both drivers in
the kernel.

Make all generic UVC functions and variables static in the UVC gadget
driver, as the symbols are not referenced outside of the gadget driver.
Rename the uvc_trace_param global variable to uvc_gadget_trace_param.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelv...
Linus Torvalds [Sun, 11 Jul 2010 20:35:34 +0000]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: Fix autoloading of fschmd on recent Fujitsu machines
  hwmon: (coretemp) Properly label the sensors
  hwmon: (coretemp) Skip duplicate CPU entries
  hwmon: (it87) Fix in7 on IT8720F
  hwmon: (k8temp) Fix temperature reporting for ASB1 processor revisions

9 years agoMerge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Sun, 11 Jul 2010 20:32:55 +0000]
Merge branch 'i2c-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c/mips: Fix error return codes from Sibyte i2c bus driver
  i2c: Fix probability check

9 years agoHID: Enable HID_QUIRK_MULTI_INPUT for Retro Adaptor
Peter Edwards [Sun, 11 Jul 2010 16:45:50 +0000]
HID: Enable HID_QUIRK_MULTI_INPUT for Retro Adaptor

Patch for linux-2.6.35-rc4 mainline kernel to enable Paul Qureshi's
Retro Adapter [http://keio.dk/retroadapter.html], an open source USB
device which allows controllers and joysticks from classic computers
and consoles to work on modern PCs, to appear as two separate devices
under Linux.
Signed-off-by: Peter Edwards <samwise@bagshot-row.org>
Acked-by: Paul Qureshi <retro@world3.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

9 years agoHID: add support for CH Eclipse yoke
Jonathan Rockway [Sat, 3 Jul 2010 07:59:01 +0000]
HID: add support for CH Eclipse yoke

This USB flight yoke needs the NOGET quirk, like most of CH's other
products. This patch adds that.

Signed-off-by: Jonathan Rockway <jon@jrock.us>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

9 years agopowerpc/fsl-booke: Fix address issue when using relocatable kernels
Matthew McClintock [Tue, 29 Jun 2010 19:42:07 +0000]
powerpc/fsl-booke: Fix address issue when using relocatable kernels

When booting a relocatable kernel it needs to jump to the correct
start address, which for BookE parts is usually unchanged
regardless of the physical memory offset.

Recent changes cause problems with how we calculate the start
address, it was always adding the RMO into the start address
which is incorrect. This patch only adds in the RMO offset
if we are in the kexec code path, as it needs the RMO to work
correctly.

Instead of adding the RMO offset in in the common code path, we
can just set r6 to the RMO offset in the kexec code path instead
of to zero, and finally perform the masking in the common code
path

Signed-off-by: Matthew McClintock <msm@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

9 years agopowerpc/cpm1: Mark micropatch code/data static and __init
Anton Vorontsov [Thu, 8 Jul 2010 17:16:16 +0000]
powerpc/cpm1: Mark micropatch code/data static and __init

This saves runtime memory and fixes lots of sparse warnings like this:

    CHECK   arch/powerpc/sysdev/micropatch.c
  arch/powerpc/sysdev/micropatch.c:27:6: warning: symbol 'patch_2000'
  was not declared. Should it be static?
  arch/powerpc/sysdev/micropatch.c:146:6: warning: symbol 'patch_2f00'
  was not declared. Should it be static?
  ...

Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

9 years agopowerpc/cpm1: Fix build with various CONFIG_*_UCODE_PATCH combinations
Anton Vorontsov [Thu, 8 Jul 2010 17:16:14 +0000]
powerpc/cpm1: Fix build with various CONFIG_*_UCODE_PATCH combinations

Warnings are treated as errors for arch/powerpc code, so build fails
with CONFIG_I2C_SPI_UCODE_PATCH=y:

CC arch/powerpc/sysdev/micropatch.o
  cc1: warnings being treated as errors
  arch/powerpc/sysdev/micropatch.c: In function 'cpm_load_patch':
  arch/powerpc/sysdev/micropatch.c:630: warning: unused variable 'smp'
  make[1]: *** [arch/powerpc/sysdev/micropatch.o] Error 1

And with CONFIG_USB_SOF_UCODE_PATCH=y:

CC arch/powerpc/sysdev/micropatch.o
  cc1: warnings being treated as errors
  arch/powerpc/sysdev/micropatch.c: In function 'cpm_load_patch':
  arch/powerpc/sysdev/micropatch.c:629: warning: unused variable 'spp'
  arch/powerpc/sysdev/micropatch.c:628: warning: unused variable 'iip'
  make[1]: *** [arch/powerpc/sysdev/micropatch.o] Error 1

This patch fixes these issues by introducing proper #ifdefs.

Cc: <stable@kernel.org> [ .33, .34 ]
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

9 years agopowerpc/cpm: Reintroduce global spi_pram struct (fixes build issue)
Anton Vorontsov [Thu, 8 Jul 2010 17:16:10 +0000]
powerpc/cpm: Reintroduce global spi_pram struct (fixes build issue)

spi_t was removed in commit 644b2a680ccc51a9ec4d6beb12e9d47d2dee98e2
("powerpc/cpm: Remove SPI defines and spi structs"), the commit assumed
that spi_t isn't used anywhere outside of the spi_mpc8xxx driver. But
it appears that the struct is needed for micropatch code. So, let's
reintroduce the struct.

Fixes the following build issue:

CC arch/powerpc/sysdev/micropatch.o
  micropatch.c: In function 'cpm_load_patch':
  micropatch.c:629: error: expected '=', ',', ';', 'asm' or '__attribute__' before '*' token
  micropatch.c:629: error: 'spp' undeclared (first use in this function)
  micropatch.c:629: error: (Each undeclared identifier is reported only once
  micropatch.c:629: error: for each function it appears in.)

Reported-by: LEROY Christophe <christophe.leroy@c-s.fr>
Reported-by: Tony Breeds <tony@bakeyournoodle.com>
Cc: <stable@kernel.org> [ .33, .34 ]
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

9 years agoARM: lockdep: fix unannotated irqs-on
Russell King [Sat, 10 Jul 2010 09:10:18 +0000]
ARM: lockdep: fix unannotated irqs-on

CPU: Testing write buffer coherency: ok
------------[ cut here ]------------
WARNING: at kernel/lockdep.c:3145 check_flags+0xcc/0x1dc()
Modules linked in:
[<c0035120>] (unwind_backtrace+0x0/0xf8) from [<c0355374>] (dump_stack+0x20/0x24)
[<c0355374>] (dump_stack+0x20/0x24) from [<c0060c04>] (warn_slowpath_common+0x58/0x70)
[<c0060c04>] (warn_slowpath_common+0x58/0x70) from [<c0060c3c>] (warn_slowpath_null+0x20/0x24)
[<c0060c3c>] (warn_slowpath_null+0x20/0x24) from [<c008f224>] (check_flags+0xcc/0x1dc)
[<c008f224>] (check_flags+0xcc/0x1dc) from [<c00945dc>] (lock_acquire+0x50/0x140)
[<c00945dc>] (lock_acquire+0x50/0x140) from [<c0358434>] (_raw_spin_lock+0x50/0x88)
[<c0358434>] (_raw_spin_lock+0x50/0x88) from [<c00fd114>] (set_task_comm+0x2c/0x60)
[<c00fd114>] (set_task_comm+0x2c/0x60) from [<c007e184>] (kthreadd+0x30/0x108)
[<c007e184>] (kthreadd+0x30/0x108) from [<c0030104>] (kernel_thread_exit+0x0/0x8)
---[ end trace 1b75b31a2719ed1c ]---
possible reason: unannotated irqs-on.
irq event stamp: 3
hardirqs last  enabled at (2): [<c0059bb0>] finish_task_switch+0x48/0xb0
hardirqs last disabled at (3): [<c002f0b0>] ret_slow_syscall+0xc/0x1c
softirqs last  enabled at (0): [<c005f3e0>] copy_process+0x394/0xe5c
softirqs last disabled at (0): [<(null)>] (null)

Fix this by ensuring that the lockdep interrupt state is manipulated in
the appropriate places.  We essentially treat userspace as an entirely
separate environment which isn't relevant to lockdep (lockdep doesn't
monitor userspace.)  We don't tell lockdep that IRQs will be enabled
in that environment.

Instead, when creating kernel threads (which is a rare event compared
to entering/leaving userspace) we have to update the lockdep state.  Do
this by starting threads with IRQs disabled, and in the kthread helper,
tell lockdep that IRQs are enabled, and enable them.

This provides lockdep with a consistent view of the current IRQ state
in kernel space.

This also revert portions of 0d928b0b616d1c5c5fe76019a87cba171ca91633
which didn't fix the problem.

Tested-by: Ming Lei <tom.leiming@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoi2c/mips: Fix error return codes from Sibyte i2c bus driver
Guenter Roeck [Sat, 10 Jul 2010 07:42:47 +0000]
i2c/mips: Fix error return codes from Sibyte i2c bus driver

Sibyte i2c bus driver returns non-descriptive error values.
Update to return error values as defined in Documentation/i2c/fault-codes.

Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

9 years agoi2c: Fix probability check
Jean Delvare [Sat, 10 Jul 2010 07:42:46 +0000]
i2c: Fix probability check

The new unified probing function differs from the original code, and
the preliminary test whether probing is possible must be updated
accordingly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>

9 years agohwmon: Fix autoloading of fschmd on recent Fujitsu machines
Jean Delvare [Fri, 9 Jul 2010 14:22:51 +0000]
hwmon: Fix autoloading of fschmd on recent Fujitsu machines

Fujitsu slightly changed the DMI strings in their recent machines,
(for example the D2778) and this breaks the automatic loading of the
needed fschmd driver. Being more tolerant on string comparison fixes
the issue.

This closes bug #15634:
https://bugzilla.kernel.org/show_bug.cgi?id=15634

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Tested-by: Sergey Spiridonov <sena@hurd.homeunix.org>
Cc: Hans de Goede <hdegoede@redhat.com>

9 years agohwmon: (coretemp) Properly label the sensors
Jean Delvare [Fri, 9 Jul 2010 14:22:51 +0000]
hwmon: (coretemp) Properly label the sensors

Don't assume that CPU entry number and core ID always match. It
worked in the simple cases (single CPU, no HT) but fails on
multi-CPU systems.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Huaxu Wan <huaxu.wan@intel.com>
Cc: stable@kernel.org

9 years agohwmon: (coretemp) Skip duplicate CPU entries
Jean Delvare [Fri, 9 Jul 2010 14:22:49 +0000]
hwmon: (coretemp) Skip duplicate CPU entries

On hyper-threaded CPUs, each core appears twice in the CPU list. Skip
the second entry to avoid duplicate sensors.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Huaxu Wan <huaxu.wan@intel.com>
Cc: stable@kernel.org

9 years agohwmon: (it87) Fix in7 on IT8720F
Jean Delvare [Fri, 9 Jul 2010 14:22:48 +0000]
hwmon: (it87) Fix in7 on IT8720F

The IT8720F has no VIN7 pin, so VCCH should always be routed
internally to VIN7 with an internal divider. Curiously, there still
is a configuration bit to control this, which means it can be set
incorrectly. And even more curiously, many boards out there are
improperly configured, even though the IT8720F datasheet claims that
the internal routing of VCCH to VIN7 is the default setting. So we
force the internal routing in this case.

It turns out that all boards with the wrong setting are from Gigabyte,
so I suspect a BIOS bug. But it's easy enough to workaround in the
driver, so let's do it.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jean-Marc Spaggiari <jean-marc@spaggiari.org>
Cc: stable@kernel.org

9 years agohwmon: (k8temp) Fix temperature reporting for ASB1 processor revisions
Andreas Herrmann [Fri, 9 Jul 2010 14:22:47 +0000]
hwmon: (k8temp) Fix temperature reporting for ASB1 processor revisions

Reported temperature for ASB1 CPUs is too high.
Add ASB1 CPU revisions (these are also non-desktop variants) to the
list of CPUs for which the temperature fixup is not required.

Example: (from LENOVO ThinkPad Edge 13, 01972NG, system was idle)

  Current kernel reports

  $ sensors
  k8temp-pci-00c3
  Adapter: PCI adapter
  Core0 Temp:  +74.0 C
  Core0 Temp:  +70.0 C
  Core1 Temp:  +69.0 C
  Core1 Temp:  +70.0 C

  With this patch I have

  $ sensors
  k8temp-pci-00c3
  Adapter: PCI adapter
  Core0 Temp:  +54.0 C
  Core0 Temp:  +51.0 C
  Core1 Temp:  +48.0 C
  Core1 Temp:  +49.0 C

Cc: stable@kernel.org [.32.x .33.x, .34.x]
Cc: Rudolf Marek <r.marek@assembler.cz>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

9 years agoARM: 6184/2: ux500: use neutral PRCMU base
Linus Walleij [Wed, 23 Jun 2010 06:59:48 +0000]
ARM: 6184/2: ux500: use neutral PRCMU base

The MTU wallclock timing fix-up patch was hardwired to the DB8500
causing a regression. This makes it work on the DB5500 as well.

Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoARM: 6212/1: atomic ops: add memory constraints to inline asm
Will Deacon [Thu, 8 Jul 2010 09:59:16 +0000]
ARM: 6212/1: atomic ops: add memory constraints to inline asm

Currently, the 32-bit and 64-bit atomic operations on ARM do not
include memory constraints in the inline assembly blocks. In the
case of barrier-less operations [for example, atomic_add], this
means that the compiler may constant fold values which have actually
been modified by a call to an atomic operation.

This issue can be observed in the atomic64_test routine in
<kernel root>/lib/atomic64_test.c:

00000000 <test_atomic64>:
   0: e1a0c00d  mov ip, sp
   4: e92dd830  push {r4, r5, fp, ip, lr, pc}
   8: e24cb004  sub fp, ip, #4
   c: e24dd008  sub sp, sp, #8
  10: e24b3014  sub r3, fp, #20
  14: e30d000d  movw r0, #53261 ; 0xd00d
  18: e3011337  movw r1, #4919 ; 0x1337
  1c: e34c0001  movt r0, #49153 ; 0xc001
  20: e34a1aa3  movt r1, #43683 ; 0xaaa3
  24: e16300f8  strd r0, [r3, #-8]!
  28: e30c0afe  movw r0, #51966 ; 0xcafe
  2c: e30b1eef  movw r1, #48879 ; 0xbeef
  30: e34d0eaf  movt r0, #57007 ; 0xdeaf
  34: e34d1ead  movt r1, #57005 ; 0xdead
  38: e1b34f9f  ldrexd r4, [r3]
  3c: e1a34f90  strexd r4, r0, [r3]
  40: e3340000  teq r4, #0
  44: 1afffffb  bne 38 <test_atomic64+0x38>
  48: e59f0004  ldr r0, [pc, #4] ; 54 <test_atomic64+0x54>
  4c: e3a0101e  mov r1, #30
  50: ebfffffe  bl 0 <__bug>
  54: 00000000  .word 0x00000000

The atomic64_set (0x38-0x44) writes to the atomic64_t, but the
compiler doesn't see this, assumes the test condition is always
false and generates an unconditional branch to __bug. The rest of the
test is optimised away.

This patch adds suitable memory constraints to the atomic operations on ARM
to ensure that the compiler is informed of the correct data hazards. We have
to use the "Qo" constraints to avoid hitting the GCC anomaly described at
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=44492 , where the compiler
makes assumptions about the writeback in the addressing mode used by the
inline assembly. These constraints forbid the use of auto{inc,dec} addressing
modes, so it doesn't matter if we don't use the operand exactly once.

Cc: stable@kernel.org
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoARM: 6211/1: atomic ops: fix register constraints for atomic64_add_unless
Will Deacon [Thu, 8 Jul 2010 09:58:06 +0000]
ARM: 6211/1: atomic ops: fix register constraints for atomic64_add_unless

The atomic64_add_unless function compares an atomic variable with
a given value and, if they are not equal, adds another given value
to the atomic variable. The function returns zero if the addition
did not occur and non-zero otherwise.

On ARM, the return value is initialised to 1 in C code. Inline assembly
code then performs the atomic64_add_unless operation, setting the
return value to 0 iff the addition does not occur. This means that
when the addition *does* occur, the value of ret must be preserved
across the inline assembly and therefore requires a "+r" constraint
rather than the current one of "=&r".

Thanks to Nicolas Pitre for helping to spot this.

Cc: stable@kernel.org
Reviewed-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoARM: 6210/1: Do not rely on reset defaults of L2X0_AUX_CTRL
Sascha Hauer [Thu, 8 Jul 2010 07:36:21 +0000]
ARM: 6210/1: Do not rely on reset defaults of L2X0_AUX_CTRL

On i.MX35 the L2X0_AUX_CTRL register does not have sensible reset
default values. Allow them to be overwritten with the aux_val/aux_mask
arguments passed to l2x0_init().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoALSA: hda - Restore cleared pin controls on resume
Takashi Iwai [Mon, 5 Jul 2010 14:50:13 +0000]
ALSA: hda - Restore cleared pin controls on resume

Many codecs now clear the pin controls at suspend via snd_hda_shutup_pins()
for reducing the click noise at power-off.  But this leaves some pins
uninitialized, and they'll be never recovered after resume.

This patch adds the proper recovery of cleared pin controls on resume.
Also it adds a check of bus->shutdown so that pins won't be cleared at
module unloading.

Reference: Kernel bug 16339
http://bugzilla.kernel.org/show_bug.cgi?id=16339

Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

9 years agoIB/qib: Use request_firmware() to load SD7220 firmware
Ben Hutchings [Thu, 1 Jul 2010 20:37:20 +0000]
IB/qib: Use request_firmware() to load SD7220 firmware

Extract the microcode for the QLogic QLE7220 series IB HCA and use the
kernel microcode request facility to load the microcode.  This
supports Debian Linux's requirements to separate microcode which
doesn't have open source code available from the device driver.

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoV4L/DVB: v4l: mem2mem_testdev: fix g_fmt NULL pointer dereference
Pawel Osciak [Tue, 22 Jun 2010 08:38:41 +0000]
V4L/DVB: v4l: mem2mem_testdev: fix g_fmt NULL pointer dereference

Calling g_fmt before s_fmt resulted in a NULL pointer dereference as no
default formats were being selected on probe.

Reported-by: Németh Márton <nm127@freemail.hu>
Signed-off-by: Pawel Osciak <p.osciak@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: uvcvideo: Power line frequency control doesn't support GET_MIN/MAX/RES
Laurent Pinchart [Mon, 5 Jul 2010 18:24:39 +0000]
V4L/DVB: uvcvideo: Power line frequency control doesn't support GET_MIN/MAX/RES

Issuing a GET_MIN request on the power line frequency control times out
on at least the Apple iSight. As the UVC specification doesn't list
GET_MIN/MAX/RES as supported on that control, remove them from the
uvc_ctrls array.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: ivtv: Add delay to ensure the decoder always restarts with a blank screen
Ian Armstrong [Sun, 20 Jun 2010 18:12:28 +0000]
V4L/DVB: ivtv: Add delay to ensure the decoder always restarts with a blank screen

Add a short delay when stopping the decoder, allowing it to settle and
preventing some unexpected interaction with other firmware commands.

Signed-off-by: Ian Armstrong <ian@iarmst.demon.co.uk>
Tested-by: Martin Dauskardt <martin.dauskardt@gmx.de>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: Documentation: Add the Philips FQ1236 MK5 to video4linux/CARDLIST.tuner
Andy Walls [Fri, 18 Jun 2010 01:24:09 +0000]
V4L/DVB: Documentation: Add the Philips FQ1236 MK5 to video4linux/CARDLIST.tuner

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: tveeprom: Add an entry for tuner code 168: a TCL M30WTP-4N-E tuner
Andy Walls [Sat, 12 Jun 2010 23:24:24 +0000]
V4L/DVB: tveeprom: Add an entry for tuner code 168: a TCL M30WTP-4N-E tuner

Hauppauge EEPROM tuner code 168 has recently shown up on HVR-1600 TV
capture cards supported by the cx18 driver.  This change allows analog
tuner type autodetection to succeed for these cards.

Information for decoding tuner code 168 was provided by Hauppauge.

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: tuner: Add a definition for the Philips FQ1236 MK5 NTSC tuner
Andy Walls [Sat, 12 Jun 2010 23:20:36 +0000]
V4L/DVB: tuner: Add a definition for the Philips FQ1236 MK5 NTSC tuner

Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: OMAP_VOUT: fix: Module params were not working through bootargs
Vaibhav Hiremath [Thu, 27 May 2010 11:17:09 +0000]
V4L/DVB: OMAP_VOUT: fix: Module params were not working through bootargs

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Muralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: OMAP_VOUT: fix: Replaced dma-sg with dma-contig
Vaibhav Hiremath [Thu, 27 May 2010 11:17:08 +0000]
V4L/DVB: OMAP_VOUT: fix: Replaced dma-sg with dma-contig

Actually OMAP doesn't support scatter-gather DMA for
Display subsystem but due to legacy coding it has been overlooked
till now.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Muralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoV4L/DVB: OMAP_VOUT:Build FIX: Rebased against latest DSS2 changes
Vaibhav Hiremath [Thu, 27 May 2010 11:17:07 +0000]
V4L/DVB: OMAP_VOUT:Build FIX: Rebased against latest DSS2 changes

Changes -
- Kconfig option dependancy changed to ARCH_OMAP2/3 from
ARCH_OMAP24XX/34XX
- There are some moments of function from omap_dss_device
to omap_dss_driver. Incorporated changes for the same.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Signed-off-by: Muralidharan Karicheri <mkaricheri@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Thu, 8 Jul 2010 19:20:54 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IPoIB: Fix world-writable child interface control sysfs attributes
  IB/qib: Clean up properly if qib_init() fails
  IB/qib: Completion queue callback needs to be single threaded
  IB/qib: Update 7322 serdes tables
  IB/qib: Clear 6120 hardware error register
  IB/qib: Clear eager buffer memory for each new process
  IB/qib: Mask hardware error during link reset
  IB/qib: Don't mark VL15 bufs as WC to avoid a rare 7322 chip problem
  RDMA/cxgb4: Derive smac_idx from port viid
  RDMA/cxgb4: Avoid false GTS CIDX_INC overflows
  RDMA/cxgb4: Don't call abort_connection() for active connect failures
  RDMA/cxgb4: Use the DMA state API instead of the pci equivalents

9 years agoMerge branches 'cxgb4', 'ipoib' and 'qib' into for-next
Roland Dreier [Thu, 8 Jul 2010 16:10:24 +0000]
Merge branches 'cxgb4', 'ipoib' and 'qib' into for-next

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Thu, 8 Jul 2010 15:20:41 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: hda - Enable beep on Realtek codecs with PCI SSID override
  ALSA: usb-audio - Add volume resolution quirk for some Logitech webcams
  ALSA: hda - Add Macbook 5,2 quirk
  ALSA: hda - Fix uninitialized variable

9 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Thu, 8 Jul 2010 15:06:40 +0000]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  writeback: simplify the write back thread queue
  writeback: split writeback_inodes_wb
  writeback: remove writeback_inodes_wbc
  fs-writeback: fix kernel-doc warnings
  splice: check f_mode for seekable file
  splice: direct_splice_actor() should not use pos in sd

9 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Thu, 8 Jul 2010 15:05:43 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc: Fix userspace build of ptrace.h
  powerpc: Fix default_machine_crash_shutdown #ifdef botch
  powerpc: Fix logic error in fixup_irqs
  powerpc/iseries: Fix possible null pointer dereference in iSeries_pcibios_fixup_resources
  powerpc: Linux cannot run with 0 cores
  powerpc: Fix feature-fixup tests for gcc 4.5
  powerpc: Disable SPARSE_IRQ by default
  powerpc: Fix compile errors in prom_init_check for gcc 4.5
  powerpc: Fix module building for gcc 4.5 and 64 bit
  powerpc/perf_event: Fix for power_pmu_disable()

9 years agoMerge branch 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 8 Jul 2010 15:02:18 +0000]
Merge branch 's5p-fixes-for-linus' of git://git./linux/kernel/git/kgene/linux-samsung

* 's5p-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: SAMSUNG: Fix on wrong function name for S5PV210 sdhci0
  ARM: S5P6442: Fix PLL setting announce message.
  ARM: SAMSUNG: Fix build without SDHCI controllers for S3C64XX
  ARM: S5PV210: Correct clock register properties
  ARM: S5P: Bug fix on external interrupt for S5P SoCs

9 years agoMerge branch 'fix/misc' into for-linus
Takashi Iwai [Thu, 8 Jul 2010 14:55:26 +0000]
Merge branch 'fix/misc' into for-linus

9 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Thu, 8 Jul 2010 14:55:02 +0000]
Merge branch 'fix/hda' into for-linus

9 years agopowerpc: Fix userspace build of ptrace.h
Sam Ravnborg [Sun, 9 May 2010 06:52:31 +0000]
powerpc: Fix userspace build of ptrace.h

Build of ptrace.h failed for assembly because it
pulls in stdint.h.
Use exportable types (__u32, __u64) to avoid the dependency
on stdint.h.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrey Volkov <avolkov@varma-el.com>
Cc: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc: Fix default_machine_crash_shutdown #ifdef botch
Paul E. McKenney [Tue, 15 Jun 2010 14:48:39 +0000]
powerpc: Fix default_machine_crash_shutdown #ifdef botch

crash_kexec_wait_realmode() is defined only if CONFIG_PPC_STD_MMU_64
and CONFIG_SMP, but is called if CONFIG_PPC_STD_MMU_64 even if !CONFIG_SMP.
Fix the conditional compilation around the invocation.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc: Fix logic error in fixup_irqs
Johannes Berg [Wed, 16 Jun 2010 00:09:35 +0000]
powerpc: Fix logic error in fixup_irqs

When SPARSE_IRQ is set, irq_to_desc() can
return NULL. While the code here has a
check for NULL, it's not really correct.
Fix it by separating the check for it.

This fixes CPU hot unplug for me.

Reported-by: Alastair Bridgewater <alastair.bridgewater@gmail.com>
Cc: stable@kernel.org [2.6.32+]
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc/iseries: Fix possible null pointer dereference in iSeries_pcibios_fixup_resources
Denis Kirjanov [Wed, 16 Jun 2010 05:16:59 +0000]
powerpc/iseries: Fix possible null pointer dereference in iSeries_pcibios_fixup_resources

I don't know if this is a right fix for the problem
since of_get_property can return NULL.
Since iseries_device_information is used only for informational purpose,
we can skip this function without valid HvSubBusNumber number.

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc: Linux cannot run with 0 cores
Anton Blanchard [Thu, 17 Jun 2010 14:33:06 +0000]
powerpc: Linux cannot run with 0 cores

If we configure with CONFIG_SMP=n or set NR_CPUS less than the number of
SMT threads we will set the max cores property to 0 in the
ibm,client-architecture-support structure. On new versions of firmware that
understand this property it obliges and terminates our partition.

Use DIV_ROUND_UP so we handle not only the CONFIG_SMP=n case but also the
case where NR_CPUS isn't a multiple of the number of SMT threads.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc: Fix feature-fixup tests for gcc 4.5
Stephen Rothwell [Mon, 28 Jun 2010 21:08:29 +0000]
powerpc: Fix feature-fixup tests for gcc 4.5

The feature-fixup test declare some extern void variables and then take
their addresses.  Fix this by declaring them as extern u8 instead.

Fixes these warnings (treated as errors):

CC arch/powerpc/lib/feature-fixups.o
cc1: warnings being treated as errors
arch/powerpc/lib/feature-fixups.c: In function 'test_cpu_macros':
arch/powerpc/lib/feature-fixups.c:293:23: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:294:9: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:297:2: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:297:2: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c: In function 'test_fw_macros':
arch/powerpc/lib/feature-fixups.c:306:23: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:307:9: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:310:2: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:310:2: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c: In function 'test_lwsync_macros':
arch/powerpc/lib/feature-fixups.c:321:23: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:322:9: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:326:3: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:326:3: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:329:3: error: taking address of expression of type 'void'
arch/powerpc/lib/feature-fixups.c:329:3: error: taking address of expression of type 'void'

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc: Disable SPARSE_IRQ by default
Yang Li [Mon, 28 Jun 2010 23:32:57 +0000]
powerpc: Disable SPARSE_IRQ by default

The SPARSE_IRQ considerably adds overhead to critical path of IRQ
handling.  However it doesn't benefit much in space for most systems with
limited IRQ_NR.  Should be disabled unless really necessary.

Signed-off-by: Li Yang <leoli@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc: Fix compile errors in prom_init_check for gcc 4.5
Stephen Rothwell [Tue, 29 Jun 2010 20:04:22 +0000]
powerpc: Fix compile errors in prom_init_check for gcc 4.5

Just whitelist these extra compiler generated symbols.
Fixes these errors:

Error: External symbol '_restgpr0_14' referenced from prom_init.c
Error: External symbol '_restgpr0_20' referenced from prom_init.c
Error: External symbol '_restgpr0_22' referenced from prom_init.c
Error: External symbol '_restgpr0_24' referenced from prom_init.c
Error: External symbol '_restgpr0_25' referenced from prom_init.c
Error: External symbol '_restgpr0_26' referenced from prom_init.c
Error: External symbol '_restgpr0_27' referenced from prom_init.c
Error: External symbol '_restgpr0_28' referenced from prom_init.c
Error: External symbol '_restgpr0_29' referenced from prom_init.c
Error: External symbol '_restgpr0_31' referenced from prom_init.c
Error: External symbol '_savegpr0_14' referenced from prom_init.c
Error: External symbol '_savegpr0_20' referenced from prom_init.c
Error: External symbol '_savegpr0_22' referenced from prom_init.c
Error: External symbol '_savegpr0_24' referenced from prom_init.c
Error: External symbol '_savegpr0_25' referenced from prom_init.c
Error: External symbol '_savegpr0_26' referenced from prom_init.c
Error: External symbol '_savegpr0_27' referenced from prom_init.c
Error: External symbol '_savegpr0_28' referenced from prom_init.c
Error: External symbol '_savegpr0_29' referenced from prom_init.c
Error: External symbol '_savegpr0_31' referenced from prom_init.c

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc: Fix module building for gcc 4.5 and 64 bit
Stephen Rothwell [Tue, 29 Jun 2010 20:08:42 +0000]
powerpc: Fix module building for gcc 4.5 and 64 bit

Gcc 4.5 is now generating out of line register save and restore
in the function prefix and postfix when we use -Os.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agopowerpc/perf_event: Fix for power_pmu_disable()
Matt Evans [Mon, 5 Jul 2010 17:36:32 +0000]
powerpc/perf_event: Fix for power_pmu_disable()

When power_pmu_disable() removes the given event from a particular index into
cpuhw->event[], it shuffles down higher event[] entries.  But, this array is
paired with cpuhw->events[] and cpuhw->flags[] so should shuffle them
similarly.

If these arrays get out of sync, code such as power_check_constraints() will
fail.  This caused a bug where events were temporarily disabled and then failed
to be re-enabled; subsequent code tried to write_pmc() with its (disabled) idx
of 0, causing a message "oops trying to write PMC0".  This triggers this bug on
POWER7, running a miss-heavy test:

  perf record -e L1-dcache-load-misses -e L1-dcache-store-misses ./misstest

Signed-off-by: Matt Evans <matt@ozlabs.org>
Acked-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Thu, 8 Jul 2010 02:56:00 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (35 commits)
  NET: SB1250: Initialize .owner
  vxge: show startup message with KERN_INFO
  ll_temac: Fix missing iounmaps
  bridge: Clear IPCB before possible entry into IP stack
  bridge br_multicast: BUG: unable to handle kernel NULL pointer dereference
  net: Fix definition of netif_vdbg() when VERBOSE_DEBUG is defined
  net/ne: fix memory leak in ne_drv_probe()
  xfrm: fix xfrm by MARK logic
  virtio_net: fix oom handling on tx
  virtio_net: do not reschedule rx refill forever
  s2io: resolve statistics issues
  linux/net.h: fix kernel-doc warnings
  net: decreasing real_num_tx_queues needs to flush qdisc
  sched: qdisc_reset_all_tx is calling qdisc_reset without qdisc_lock
  qlge: fix a eeh handler to not add a pending timer
  qlge: Replacing add_timer() to mod_timer()
  usbnet: Set parent device early for netdev_printk()
  net: Revert "rndis_host: Poll status channel before control channel"
  netfilter: ip6t_REJECT: fix a dst leak in ipv6 REJECT
  drivers: bluetooth: bluecard_cs.c: Fixed include error, changed to linux/io.h
  ...

9 years agoinput: i8042 - add runtime check in x86's i8042_platform_init
Feng Tang [Wed, 7 Jul 2010 20:02:16 +0000]
input: i8042 - add runtime check in x86's i8042_platform_init

Then it will first check x86_platforms's i8042 detection result,
then go on with normal probe.

Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <4c34dd482753bb8f1@agluck-desktop.sc.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

9 years agoRevert "Input: fixup X86_MRST selects"
Feng Tang [Mon, 5 Jul 2010 15:03:21 +0000]
Revert "Input: fixup X86_MRST selects"

This reverts commit 0b28bac5aef7bd1ab213723df031e61db9ff151a.

After adding x86_platform's detection for i8042 controller, we
don't need the force dependency on !X86_MRST any more

Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <1278342202-10973-5-git-send-email-feng.tang@intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

9 years agoRevert "Input: do not force selecting i8042 on Moorestown"
Feng Tang [Mon, 5 Jul 2010 15:03:20 +0000]
Revert "Input: do not force selecting i8042 on Moorestown"

This reverts commit 685afae02557a178185a4be36f58332976e79f63.

After adding x86_platform's detection for i8042 controller, we
don't need the force dependency on !X86_MRST any more

Cc: Jacob Pan <jacob.jun.pan@linux.intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <1278342202-10973-4-git-send-email-feng.tang@intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

9 years agox86, mrst: Add i8042_detect API for Moorestwon platform
Feng Tang [Mon, 5 Jul 2010 15:03:19 +0000]
x86, mrst: Add i8042_detect API for Moorestwon platform

It will just return 0 as there is no i8042 controller

Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <1278342202-10973-3-git-send-email-feng.tang@intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

9 years agox86: Add i8042 pre-detection hook to x86_platform_ops
Feng Tang [Mon, 5 Jul 2010 15:03:18 +0000]
x86: Add i8042 pre-detection hook to x86_platform_ops

Some x86 platforms like Intel MID platforms don't have i8042 controllers,
and i8042 driver's probe to some legacy IO ports may hang the MID
processor. With this hook, i8042 driver can runtime check and skip the
probe when the pretection fail which also saves some probe time

[ hpa note: this is currently a compile-time check, which breaks the
  i386 allyesconfig build.  This patch series thus does fix a regression. ]

Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <1278342202-10973-2-git-send-email-feng.tang@intel.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

9 years agox86, platform: Export x86_platform to modules
H. Peter Anvin [Wed, 7 Jul 2010 23:57:46 +0000]
x86, platform: Export x86_platform to modules

Export x86_platform to modules in preparation of using it for i8042
discovery control.

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
LKML-Reference: <1278342202-10973-1-git-send-email-feng.tang@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Feng Tang <feng.tang@intel.com>
Cc: Dmitry Torokhov <dtor@mail.ru>

9 years agoNET: SB1250: Initialize .owner
Ralf Baechle [Tue, 6 Jul 2010 05:18:11 +0000]
NET: SB1250: Initialize .owner

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

 drivers/net/sb1250-mac.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agovxge: show startup message with KERN_INFO
Wu Fengguang [Tue, 6 Jul 2010 03:02:03 +0000]
vxge: show startup message with KERN_INFO

The original KERN_CRIT will mess up terminals.

CC: Sreenivasa Honnur <Sreenivasa.Honnur@neterion.com>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoll_temac: Fix missing iounmaps
Denis Kirjanov [Mon, 5 Jul 2010 21:44:20 +0000]
ll_temac: Fix missing iounmaps

Fix missing iounmaps.

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agobridge: Clear IPCB before possible entry into IP stack
Herbert Xu [Mon, 5 Jul 2010 21:29:28 +0000]
bridge: Clear IPCB before possible entry into IP stack

The bridge protocol lives dangerously by having incestuous relations
with the IP stack.  In this instance an abomination has been created
where a bogus IPCB area from a bridged packet leads to a crash in
the IP stack because it's interpreted as IP options.

This patch papers over the problem by clearing the IPCB area in that
particular spot.  To fix this properly we'd also need to parse any
IP options if present but I'm way too lazy for that.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

Cheers,
Signed-off-by: David S. Miller <davem@davemloft.net>

9 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Wed, 7 Jul 2010 18:43:28 +0000]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: correctly update connector DPMS status in drm_fb_helper
  drm/radeon/kms: fix shared ddc handling
  drm/ttm: Allocate the page pool manager in the heap.

9 years agodrm: correctly update connector DPMS status in drm_fb_helper
Jesse Barnes [Fri, 2 Jul 2010 17:48:08 +0000]
drm: correctly update connector DPMS status in drm_fb_helper

We don't currently update the DPMS status of the connector (both in the
connector itself and the connector's DPMS property) in the fb helper
code.  This means that if the kernel FB core has blanked the screen,
sysfs will still show a DPMS status of "on".  It also means that when X
starts, it will try to light up the connectors, but the drm_crtc_helper
code will ignore the DPMS change since according to the connector, the
DPMS status is already on.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=28436 (the annoying
"my screen was blanked when I started X and now it won't light up" bug).

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agodrm/radeon/kms: fix shared ddc handling
Alex Deucher [Thu, 1 Jul 2010 14:34:56 +0000]
drm/radeon/kms: fix shared ddc handling

Connectors with a shared ddc line can be connected to different
encoders.

Reported by Pasi Kärkkäinen <pasik@iki.fi> on dri-devel

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agodrm/ttm: Allocate the page pool manager in the heap.
Francisco Jerez [Sun, 4 Jul 2010 02:03:07 +0000]
drm/ttm: Allocate the page pool manager in the heap.

Repeated ttm_page_alloc_init/fini fails noisily because the pool
manager kobj isn't zeroed out between uses (we could do just that but
statically allocated kobjects are generally considered a bad thing).
Move it to kzalloc'ed memory.

Note that this patch drops the refcounting behavior of the pool
allocator init/fini functions: it would have led to a race condition
in its current form, and anyway it was never exploited.

This fixes a regression with reloading kms modules at runtime, since
page allocator was introduced.

Signed-off-by: Francisco Jerez <currojerez@riseup.net>
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agoVFS: introduce s_dirty accessors
Artem Bityutskiy [Thu, 10 Jun 2010 10:56:33 +0000]
VFS: introduce s_dirty accessors

This patch introduces 3 VFS accessors: 'sb_mark_dirty()',
'sb_mark_clean()', and 'sb_is_dirty()'. They simply
set 'sb->s_dirt' or test 'sb->s_dirt'. The plan is to make
every FS use these accessors later instead of manipulating
the 'sb->s_dirt' flag directly.

Ultimately, this change is a preparation for the periodic
superblock synchronization optimization which is about
preventing the "sync_supers" kernel thread from waking up
even if there is nothing to synchronize.

This patch does not do any functional change, just adds
accessor functions.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Wed, 7 Jul 2010 00:16:09 +0000]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  rbtree: Undo augmented trees performance damage and regression
  x86, Calgary: Limit the max PHB number to 256

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Wed, 7 Jul 2010 00:15:15 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  ceph: fix crush device 'out' threshold to 1.0, not 0.1
  ceph: fix caps usage accounting for import (non-reserved) case
  ceph: only release clean, unused caps with mds requests
  ceph: fix crush CHOOSE_LEAF when type is already a leaf
  ceph: fix crush recursion
  ceph: fix caps debugfs entry
  ceph: delay umount until all mds requests drop inode+dentry refs
  ceph: handle splice_dentry/d_materialize_unique error in readdir_prepopulate
  ceph: fix crush map update decoding
  ceph: fix message memory leak, uninitialized variable
  ceph: fix map handler error path
  ceph: some endianity fixes

9 years agoMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
Linus Torvalds [Wed, 7 Jul 2010 00:14:53 +0000]
Merge branch 'urgent' of git://git./linux/kernel/git/brodo/pcmcia-2.6

* 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6:
  pcmcia: do not initialize the present flag too late.

9 years agoMerge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus
Linus Torvalds [Wed, 7 Jul 2010 00:14:33 +0000]
Merge branch 'upstream' of git://ftp.linux-mips.org/upstream-linus

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: (22 commits)
  MIPS: Return after handling coprocessor 2 exception
  MIPS: BCM47xx: Add NVRAM support devices
  MIPS: Loongson: Define rtc device on MC146818-equipped systems
  MIPS: MT: Fix FPU affinity.
  MIPS: Oprofile: Fixup of loongson2_exit()
  MIPS: Alchemy: sleepcode without compile-time cputype dependencies
  MIPS: Tracing: Cleanup of address space checking
  MIPS: Tracing: Cleanup of function graph tracer
  MIPS: Tracing: Reduce the overhead of dynamic Function Tracer
  MIPS: Tracing: Cleanup of instructions used
  MIPS: Tracing: Fix 32-bit support with -mmcount-ra-address
  MIPS: Tracing: Fix argument passing of the 32bit support with gcc 4.5
  MIPS: Tracing: Cleanup comments
  MIPS: Tracing: Cleanup the arguments passing of prepare_ftrace_return
  MIPS: Tracing: Merge adjacent #ifdefs with same condition.
  MIPS: AR7, BCM63xx: fix gpio_to_irq() return value
  MIPS: Restore signalling NaN behaviour for abs.[sd]
  MIPS: Loongson: CS5536: Fix ISA support
  MIPS: Loongson: Add a missing break statement in CS5536 IDE code
  MIPS: Loongson: CS5536: Add missing RDMSRs for IDE and USB
  ...

9 years agokbuild: Fix path to scripts/setlocalversion
Michal Marek [Mon, 5 Jul 2010 21:43:04 +0000]
kbuild: Fix path to scripts/setlocalversion

Commit 0a564b2 broke LOCALVERSION for O=... builds. Ouch.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-and-tested-by: Rafael J. Wysocki <rjw@sisk.pl>
Reported-by: Peter Anvin <hpa@zytor.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoIPoIB: Fix world-writable child interface control sysfs attributes
Or Gerlitz [Sun, 6 Jun 2010 04:59:16 +0000]
IPoIB: Fix world-writable child interface control sysfs attributes

Sumeet Lahorani <sumeet.lahorani@oracle.com> reported that the IPoIB
child entries are world-writable; however we don't want ordinary users
to be able to create and destroy child interfaces, so fix them to be
writable only by root.

Signed-off-by: Or Gerlitz <ogerlitz@voltaire.com>
Cc: <stable@kernel.org>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoIB/qib: Clean up properly if qib_init() fails
Ralph Campbell [Thu, 1 Jul 2010 20:25:45 +0000]
IB/qib: Clean up properly if qib_init() fails

If qib_init() fails, the driver fails to free memory, unregister
device files, and unregister with the PCIe framework. The driver will
unload without error but a subsequent driver load will cause the
system to panic.  This was found by changing the 7220 code to load the
serdes microcode separately and not installing the microcode file.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoIB/qib: Completion queue callback needs to be single threaded
Ralph Campbell [Thu, 17 Jun 2010 23:14:15 +0000]
IB/qib: Completion queue callback needs to be single threaded

Workqueues aren't exactly equivalent to tasklets since the callback
function may be called from multiple CPUs before the callback returns.
This causes completion notification callbacks to have MT bugs since
they weren't expecting this behavior. The fix is to use a single
threaded work queue.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoIB/qib: Update 7322 serdes tables
Ralph Campbell [Thu, 17 Jun 2010 23:14:09 +0000]
IB/qib: Update 7322 serdes tables

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoIB/qib: Clear 6120 hardware error register
Ralph Campbell [Thu, 17 Jun 2010 23:14:04 +0000]
IB/qib: Clear 6120 hardware error register

The hardware error register needs to be cleared or another interrupt
will be generated, thus causing an infinite loop.  This is a
regression introduced when removing debug output.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoIB/qib: Clear eager buffer memory for each new process
Ralph Campbell [Thu, 17 Jun 2010 23:13:59 +0000]
IB/qib: Clear eager buffer memory for each new process

The eager buffers are not being cleared before being mmapped into a
new user address space.  This is a potential security risk and should
be fixed.  Note that the eager header queue is already being cleared.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoIB/qib: Mask hardware error during link reset
Ralph Campbell [Thu, 17 Jun 2010 23:13:54 +0000]
IB/qib: Mask hardware error during link reset

The HCA checks for certain hardware errors which can be falsely
triggered when the IB link is reset. The fix is to mask them rather
than report them.

Signed-off-by: Ralph Campbell <ralph.campbell@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoIB/qib: Don't mark VL15 bufs as WC to avoid a rare 7322 chip problem
Dave Olson [Thu, 17 Jun 2010 23:13:44 +0000]
IB/qib: Don't mark VL15 bufs as WC to avoid a rare 7322 chip problem

Don't set write combining via PAT on the VL15 buffers to avoid a rare
problem with unaligned writes from interrupt-flushed store buffers.

Signed-off-by: Dave Olson <dave.olson@qlogic.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoRDMA/cxgb4: Derive smac_idx from port viid
Steve Wise [Wed, 23 Jun 2010 15:46:44 +0000]
RDMA/cxgb4: Derive smac_idx from port viid

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoRDMA/cxgb4: Avoid false GTS CIDX_INC overflows
Steve Wise [Thu, 10 Jun 2010 19:03:06 +0000]
RDMA/cxgb4: Avoid false GTS CIDX_INC overflows

The T4 IQ hw design assumes CIDX_INC credits will be returned on a
regular basis and always before the CIDX counter crosses over the PIDX
counter.  For RDMA CQs, however, returning CIDX_INC credits is only
needed and desired when and if the CQ is armed for notification.  This
can lead to a GTS write returning credits that causes the HW to reject
the credit update because it causes CIDX to pass PIDX.  Once this
happens, the CIDX/PIDX counters get out of whack and an application
can miss a notification and get stuck blocked awaiting a notification.

To avoid this, we allocate the HW IQ 2x times the requested size.
This seems to avoid the false overflow failures.  If we see more
issues with this, then we'll have to add code in the poll path to
return credits periodically like when the amount reaches 1/2 the queue
depth).  I would like to avoid this as it adds a PCI write transaction
for applications that never arm the CQ (like most MPIs).

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

9 years agoRDMA/cxgb4: Don't call abort_connection() for active connect failures
Steve Wise [Thu, 10 Jun 2010 19:02:55 +0000]
RDMA/cxgb4: Don't call abort_connection() for active connect failures

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>