9 years agoARM: 6389/1: errata: incorrect hazard handling in the SCU may lead to data corruption
Will Deacon [Tue, 14 Sep 2010 08:53:02 +0000]
ARM: 6389/1: errata: incorrect hazard handling in the SCU may lead to data corruption

On the r2p0, r2p1 and r2p2 versions of the Cortex-A9, data corruption
can occur if a shared cache line is replaced on one CPU as another CPU
is accessing it.

This workaround sets two bits in the diagnostic register of the Cortex-A9,
reducing the linefill issuing capabilities of the processor and
avoiding the erroneous behaviour.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoARM: 6388/1: errata: DMB operation may be faulty
Will Deacon [Tue, 14 Sep 2010 08:51:43 +0000]
ARM: 6388/1: errata: DMB operation may be faulty

On versions of the Cortex-A9 up to and including r2p2, under rare
circumstances, a DMB instruction between 2 write operations may not
ensure the correct visibility ordering of the 2 writes.

This workaround sets a bit in the diagnostic register of the Cortex-A9,
causing the DMB instruction to behave like a DSB, which functions
correctly on the affected cores.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoARM: 6387/1: errata: check primary part ID in proc-v7.S
Will Deacon [Tue, 14 Sep 2010 08:50:03 +0000]
ARM: 6387/1: errata: check primary part ID in proc-v7.S

Kconfig doesn't have any knowledge of specific v7 cores, so it is possible
to select errata workarounds that may cause inadvertent behaviour when
executed on a core other than those targetted by the fix.

This patch improves the variant and revision checking in proc-v7.S so
that the primary part number is also considered when applying errata
workarounds.

Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoARM: 6377/1: supply _cansleep gpio function to U300
Linus Walleij [Mon, 13 Sep 2010 12:44:47 +0000]
ARM: 6377/1: supply _cansleep gpio function to U300

We have to use _cansleep gpio accessors in the MMCI driver so as
to avoid slowpath warnings, now U300 has MMCI but doesn't have
these functions in place to siply wrap the existing non-sleeping
functions into sleepable variants.

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

9 years agoARM: 6376/1: plat-nomadik: MTU: Change prescaler limit and comment updates
Linus Walleij [Mon, 13 Sep 2010 12:40:04 +0000]
ARM: 6376/1: plat-nomadik: MTU: Change prescaler limit and comment updates

The prescaler 16 is now used only when the timer runs at 32 MHz
or more. Some comment updates as well.

Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoARM: 6375/1: plat-nomadik: MTU timer trivial bug fix
Linus Walleij [Mon, 13 Sep 2010 12:38:55 +0000]
ARM: 6375/1: plat-nomadik: MTU timer trivial bug fix

timer0 to 3 are all on mtu block 0, so don't calculate the clock event
rate based upon mtu block 1's clock speed.

Acked-by: Alessandro Rubini <rubini@unipv.it>
Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Thu, 16 Sep 2010 19:59:11 +0000]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: fix potential double put of TCP session reference

9 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Thu, 16 Sep 2010 19:58:44 +0000]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] Optimize ticket spinlocks in fsys_rt_sigprocmask

9 years agoMerge branch '2.6.36-fixes' of git://github.com/schandinat/linux-2.6
Linus Torvalds [Thu, 16 Sep 2010 19:56:48 +0000]
Merge branch '2.6.36-fixes' of git://github.com/schandinat/linux-2.6

* '2.6.36-fixes' of git://github.com/schandinat/linux-2.6:
  drivers/video/via/ioctl.c: prevent reading uninitialized stack memory

9 years agoMerge branch 'urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-2.6
Linus Torvalds [Thu, 16 Sep 2010 19:56:12 +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 pcnet_cs: try setting io_lines to 16 if card setup fails
  pcmcia: per-device, not per-socket debug messages
  pcmcia serial_cs.c: fix multifunction card handling

9 years agoMerge git://git.infradead.org/users/cbou/battery-2.6.36
Linus Torvalds [Thu, 16 Sep 2010 19:55:44 +0000]
Merge git://git.infradead.org/users/cbou/battery-2.6.36

* git://git.infradead.org/users/cbou/battery-2.6.36:
  apm_power: Add missing break statement
  intel_pmic_battery: Fix battery charging status on mrst

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
Linus Torvalds [Thu, 16 Sep 2010 19:55:16 +0000]
Merge git://git./linux/kernel/git/wim/linux-2.6-watchdog

* git://git.kernel.org/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  watchdog: Enable NXP LPC32XX support in Kconfig (resend)
  watchdog: ts72xx_wdt: disable watchdog at probe
  watchdog: sb_wdog: release irq and reboot notifier in error path and module_exit()

9 years agoMerge branch 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux...
Linus Torvalds [Thu, 16 Sep 2010 19:54:54 +0000]
Merge branch 'stable' of git://git./linux/kernel/git/cmetcalf/linux-tile

* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
  arch/tile: fix formatting bug in register dumps
  arch/tile: fix memcpy_fromio()/memcpy_toio() signatures
  arch/tile: Save and restore extra user state for tilegx
  arch/tile: Change struct sigcontext to be more useful
  arch/tile: finish const-ifying sys_execve()

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
Linus Torvalds [Thu, 16 Sep 2010 19:54:39 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator: wm8350-regulator - fix the logic of checking REGULATOR_MODE_STANDBY mode
  regulator: wm831x-ldo - fix the logic to set REGULATOR_MODE_IDLE and REGULATOR_MODE_STANDBY modes
  regulator: ab8500 - fix off-by-one value range checking for selector
  regulator: 88pm8607 - fix value range checking for accessing info->vol_table
  regulator: isl6271a-regulator - fix regulator_desc parameter for regulator_register()
  regulator: ad5398 - fix a memory leak
  regulator: Update e-mail address for Liam Girdwood
  regulator: set max8998->dev to &pdev->dev.
  regulator: tps6586x-regulator - fix bit_mask parameter for tps6586x_set_bits()
  regulator: tps6586x-regulator - fix value range checking for val
  regulator: max8998 - set max8998->num_regulators
  regulator: max8998 - fix memory allocation size for max8998->rdev
  regulator: tps6507x - remove incorrect comments
  regulator: max1586 - improve the logic of choosing selector
  regulator: ab8500 - fix the logic to remove already registered regulators in error path
  regulator: ab3100 - fix the logic to remove already registered regulators in error path
  regulator/ab8500: move dereference below the check for NULL

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq
Linus Torvalds [Thu, 16 Sep 2010 19:50:31 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tj/wq

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq:
  workqueue: add documentation

9 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Thu, 16 Sep 2010 19:48:58 +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/radeon/kms: only warn on mipmap size checks in r600 cs checker (v2)
  drm/radeon/kms: force legacy pll algo for RV620 LVDS
  drm: fix race between driver loading and userspace open.
  drm: Use a nondestructive mode for output detect when polling (v2)
  drm/radeon/kms: fix the colorbuffer CS checker for r300-r500
  drm/radeon/kms: increase lockup detection interval to 10 sec for r100-r500
  drm/radeon/kms/evergreen: fix backend setup
  drm: Use a nondestructive mode for output detect when polling
  drm/radeon: add some missing copyright headers
  drm: Only decouple the old_fb from the crtc is we call mode_set*
  drm/radeon/kms: don't enable underscan with interlaced modes
  drm/radeon/kms: add connector table for Mac x800
  drm/radeon/kms: fix regression in RMX code (v2)
  drm: Fix regression in disable polling e58f637

9 years agodrivers/video/via/ioctl.c: prevent reading uninitialized stack memory
Dan Rosenberg [Wed, 15 Sep 2010 23:08:24 +0000]
drivers/video/via/ioctl.c: prevent reading uninitialized stack memory

The VIAFB_GET_INFO device ioctl allows unprivileged users to read 246
bytes of uninitialized stack memory, because the "reserved" member of
the viafb_ioctl_info struct declared on the stack is not altered or
zeroed before being copied back to the user.  This patch takes care of
it.

Signed-off-by: Dan Rosenberg <dan.j.rosenberg@gmail.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

9 years ago[IA64] Optimize ticket spinlocks in fsys_rt_sigprocmask
Petr Tesarik [Wed, 15 Sep 2010 22:35:48 +0000]
[IA64] Optimize ticket spinlocks in fsys_rt_sigprocmask

Tony's fix (f574c843191728d9407b766a027f779dcd27b272) has a small bug,
it incorrectly uses "r3" as a scratch register in the first of the two
unlock paths ... it is also inefficient.  Optimize the fast path again.

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
Signed-off-by: Tony Luck <tony.luck@intel.com>

9 years agowatchdog: Enable NXP LPC32XX support in Kconfig (resend)
Kevin Wells [Wed, 18 Aug 2010 00:45:28 +0000]
watchdog: Enable NXP LPC32XX support in Kconfig (resend)

The NXP LPC32XX processor use the same watchdog as the Philips
PNX4008 processor.

Signed-off-by: Kevin Wells <wellsk40@gmail.com>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

9 years agowatchdog: ts72xx_wdt: disable watchdog at probe
Mika Westerberg [Sun, 29 Aug 2010 10:53:14 +0000]
watchdog: ts72xx_wdt: disable watchdog at probe

Since it may be already enabled by bootloader or some other utility. This patch
makes sure that the watchdog is disabled before any userspace daemon opens the
device. It is also required by the watchdog API.

Signed-off-by: Mika Westerberg <mika.westerberg@iki.fi>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

9 years agowatchdog: sb_wdog: release irq and reboot notifier in error path and module_exit()
Akinobu Mita [Sat, 21 Aug 2010 09:27:50 +0000]
watchdog: sb_wdog: release irq and reboot notifier in error path and module_exit()

irq and reboot notifier are acquired in module_init() but never released.
They should be released correctly, otherwise reloading the module or error
during module_init() will cause a problem.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Andrew Sharp <andy.sharp@lsi.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

9 years agopcmcia pcnet_cs: try setting io_lines to 16 if card setup fails
Dominik Brodowski [Mon, 13 Sep 2010 18:23:12 +0000]
pcmcia pcnet_cs: try setting io_lines to 16 if card setup fails

Some pcnet_cs compatible cards require an exact 16-lines match
of the ioport areas specified in CIS, but set the "iolines"
value in the CIS incorrectly. We can easily work around this
issue -- same as we do in serial_cs -- by first trying setting
iolines to the CIS-specified value, and then trying a 16-line
match.

Reported-and-tested-by: Wolfram Sang <w.sang@pengutronix.de>
Hardware-supplied-by: Jochen Frieling <j.frieling@pengutronix.de>
CC: netdev@vger.kernel.org
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

9 years agopcmcia: per-device, not per-socket debug messages
Dominik Brodowski [Mon, 13 Sep 2010 14:51:36 +0000]
pcmcia: per-device, not per-socket debug messages

As the iomem / ioport setup differs per device, it is much better
to print out the device instead of the socket.

Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

9 years agopcmcia serial_cs.c: fix multifunction card handling
Dominik Brodowski [Mon, 30 Aug 2010 06:18:54 +0000]
pcmcia serial_cs.c: fix multifunction card handling

We shouldn't overwrite pre-set values, and we should also
set the port address to the beginning, and not the end of
the 8-port range.

CC: linux-serial@vger.kernel.org
Reported-by: Komuro <komurojun-mbn@nifty.com>
Hardware-supplied-by: Jochen Frieling <j.frieling@pengutronix.de>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>

9 years agoarch/tile: fix formatting bug in register dumps
Chris Metcalf [Wed, 15 Sep 2010 15:17:05 +0000]
arch/tile: fix formatting bug in register dumps

This cut-and-paste bug was caused by rewriting the register dump
code to use only a single printk per line of output.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

9 years agoarch/tile: fix memcpy_fromio()/memcpy_toio() signatures
Chris Metcalf [Wed, 15 Sep 2010 15:17:04 +0000]
arch/tile: fix memcpy_fromio()/memcpy_toio() signatures

This tripped up a driver (not yet committed to git).  Fix it now.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

9 years agoarch/tile: Save and restore extra user state for tilegx
Chris Metcalf [Wed, 15 Sep 2010 15:16:10 +0000]
arch/tile: Save and restore extra user state for tilegx

During context switch, save and restore a couple of additional bits of
tilegx user state that can be persistently modified by userspace.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

9 years agoarch/tile: Change struct sigcontext to be more useful
Chris Metcalf [Wed, 15 Sep 2010 15:16:08 +0000]
arch/tile: Change struct sigcontext to be more useful

Rather than just using pt_regs, it now contains the actual saved
state explicitly, similar to pt_regs.  By doing it this way, we
provide a cleaner API for userspace (or equivalently, we avoid the
need for libc to provide its own definition of sigcontext).

While we're at it, move PT_FLAGS_xxx to where they are not visible
from userspace.  And always pass siginfo and mcontext to signal
handlers, even if they claim they don't need it, since sometimes
they actually try to use it anyway in practice.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

9 years agoarch/tile: finish const-ifying sys_execve()
Chris Metcalf [Wed, 15 Sep 2010 15:16:05 +0000]
arch/tile: finish const-ifying sys_execve()

The sys_execve() implementation was properly const-ified but not
the declaration, the syscall wrappers, or the compat version.
This change completes the constification process.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>

9 years agodrm/radeon/kms: only warn on mipmap size checks in r600 cs checker (v2)
Alex Deucher [Tue, 14 Sep 2010 14:10:47 +0000]
drm/radeon/kms: only warn on mipmap size checks in r600 cs checker (v2)

The texture base address registers are in units of 256 bytes.
The original CS checker treated these offsets as bytes, so the
original check was wrong.  I fixed the units in a patch during
the 2.6.36 cycle, but this ended up breaking some existing
userspace (probably due to a bug in either userspace texture allocation
or the drm texture mipmap checker).  So for now, until we come
up with a better fix, just warn if the mipmap size it too large.
This will keep existing userspace working and it should be just
as safe as before when we were checking the wrong units.  These
are GPU MC addresses, so if they fall outside of the VRAM or
GART apertures, they end up at the GPU default page, so this should
be safe from a security perspective.

v2: Just disable the warning.  It just spams the log and there's
nothing the user can do about it.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: Jerome Glisse <glisse@freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agoMerge ssh://master.kernel.org/home/hpa/tree/sec
Linus Torvalds [Wed, 15 Sep 2010 00:07:51 +0000]
Merge ssh://master.kernel.org/home/hpa/tree/sec

* ssh://master.kernel.org/home/hpa/tree/sec:
  x86-64, compat: Retruncate rax after ia32 syscall entry tracing
  x86-64, compat: Test %rax for the syscall number, not %eax
  compat: Make compat_alloc_user_space() incorporate the access_ok()

9 years agoMN10300: Fix up the IRQ names for the on-chip serial ports
David Howells [Tue, 14 Sep 2010 16:59:15 +0000]
MN10300: Fix up the IRQ names for the on-chip serial ports

Fix up the IRQ names for the MN10300 on-chip serial ports in the driver as
request_interrupt() no longer allows names containing slashes, giving a warning
like the following if one is encountered:

------------[ cut here ]------------
WARNING: at fs/proc/generic.c:323 __xlate_proc_name+0x62/0x7c()
name 'ttySM0/Rx'

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge git://git.infradead.org/mtd-2.6
Linus Torvalds [Wed, 15 Sep 2010 00:05:39 +0000]
Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6:
  mtd: pxa3xx: fix build error when CONFIG_MTD_PARTITIONS is not defined
  mtd: mxc_nand: configure pages per block for v2 controller
  mtd: OneNAND: Fix loop hang when DMA error at Samsung SoCs
  mtd: OneNAND: Fix 2KiB pagesize handling at Samsung SoCs
  mtd: Blackfin NFC: fix invalid free in remove()
  mtd: Blackfin NFC: fix build error after nand_scan_ident() change
  mxc_nand: Do not do byte accesses to the NFC buffer.

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Wed, 15 Sep 2010 00:05:09 +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: fix hiddev's use of usb_find_interface
  HID: fixup blacklist entry for Asus T91MT
  HID: add device ID for new Asus Multitouch Controller
  HID: add no-get quirk for eGalax touch controller
  HID: Add quirk for eGalax touch controler.
  HID: add support for another BTC Emprex remote control
  HID: Set Report ID properly for Output reports on the Control endpoint.
  HID: Kanvus Note A5 tablet needs HID_QUIRK_MULTI_INPUT
  HID: Add support for chicony multitouch screens.

9 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6
Linus Torvalds [Wed, 15 Sep 2010 00:04:48 +0000]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/nfs-2.6:
  SUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependencies
  statfs() gives ESTALE error
  NFS: Fix a typo in nfs_sockaddr_match_ipaddr6
  sunrpc: increase MAX_HASHTABLE_BITS to 14
  gss:spkm3 miss returning error to caller when import security context
  gss:krb5 miss returning error to caller when import security context
  Remove incorrect do_vfs_lock message
  SUNRPC: cleanup state-machine ordering
  SUNRPC: Fix a race in rpc_info_open
  SUNRPC: Fix race corrupting rpc upcall
  Fix null dereference in call_allocate

9 years agoaio: check for multiplication overflow in do_io_submit
Jeff Moyer [Fri, 10 Sep 2010 21:16:00 +0000]
aio: check for multiplication overflow in do_io_submit

Tavis Ormandy pointed out that do_io_submit does not do proper bounds
checking on the passed-in iocb array:

       if (unlikely(nr < 0))
               return -EINVAL;

       if (unlikely(!access_ok(VERIFY_READ, iocbpp, (nr*sizeof(iocbpp)))))
               return -EFAULT;                      ^^^^^^^^^^^^^^^^^^

The attached patch checks for overflow, and if it is detected, the
number of iocbs submitted is scaled down to a number that will fit in
the long.  This is an ok thing to do, as sys_io_submit is documented as
returning the number of iocbs submitted, so callers should handle a
return value of less than the 'nr' argument passed in.

Reported-by: Tavis Ormandy <taviso@cmpxchg8b.com>
Signed-off-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agocifs: fix potential double put of TCP session reference
Jeff Layton [Tue, 14 Sep 2010 15:38:24 +0000]
cifs: fix potential double put of TCP session reference

cifs_get_smb_ses must be called on a server pointer on which it holds an
active reference. It first does a search for an existing SMB session. If
it finds one, it'll put the server reference and then try to ensure that
the negprot is done, etc.

If it encounters an error at that point then it'll return an error.
There's a potential problem here though. When cifs_get_smb_ses returns
an error, the caller will also put the TCP server reference leading to a
double-put.

Fix this by having cifs_get_smb_ses only put the server reference if
it found an existing session that it could use and isn't returning an
error.

Cc: stable@kernel.org
Reviewed-by: Suresh Jayaraman <sjayaraman@suse.de>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>

9 years agox86-64, compat: Retruncate rax after ia32 syscall entry tracing
Roland McGrath [Tue, 14 Sep 2010 19:22:58 +0000]
x86-64, compat: Retruncate rax after ia32 syscall entry tracing

In commit d4d6715, we reopened an old hole for a 64-bit ptracer touching a
32-bit tracee in system call entry.  A %rax value set via ptrace at the
entry tracing stop gets used whole as a 32-bit syscall number, while we
only check the low 32 bits for validity.

Fix it by truncating %rax back to 32 bits after syscall_trace_enter,
in addition to testing the full 64 bits as has already been added.

Reported-by: Ben Hawkes <hawkes@sota.gen.nz>
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>

9 years agox86-64, compat: Test %rax for the syscall number, not %eax
H. Peter Anvin [Tue, 14 Sep 2010 19:42:41 +0000]
x86-64, compat: Test %rax for the syscall number, not %eax

On 64 bits, we always, by necessity, jump through the system call
table via %rax.  For 32-bit system calls, in theory the system call
number is stored in %eax, and the code was testing %eax for a valid
system call number.  At one point we loaded the stored value back from
the stack to enforce zero-extension, but that was removed in checkin
d4d67150165df8bf1cc05e532f6efca96f907cab.  An actual 32-bit process
will not be able to introduce a non-zero-extended number, but it can
happen via ptrace.

Instead of re-introducing the zero-extension, test what we are
actually going to use, i.e. %rax.  This only adds a handful of REX
prefixes to the code.

Reported-by: Ben Hawkes <hawkes@sota.gen.nz>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@kernel.org>
Cc: Roland McGrath <roland@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>

9 years agocompat: Make compat_alloc_user_space() incorporate the access_ok()
H. Peter Anvin [Tue, 7 Sep 2010 23:16:18 +0000]
compat: Make compat_alloc_user_space() incorporate the access_ok()

compat_alloc_user_space() expects the caller to independently call
access_ok() to verify the returned area.  A missing call could
introduce problems on some architectures.

This patch incorporates the access_ok() check into
compat_alloc_user_space() and also adds a sanity check on the length.
The existing compat_alloc_user_space() implementations are renamed
arch_compat_alloc_user_space() and are used as part of the
implementation of the new global function.

This patch assumes NULL will cause __get_user()/__put_user() to either
fail or access userspace on all architectures.  This should be
followed by checking the return value of compat_access_user_space()
for NULL in the callers, at which time the access_ok() in the callers
can also be removed.

Reported-by: Ben Hawkes <hawkes@sota.gen.nz>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Tony Luck <tony.luck@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: James Bottomley <jejb@parisc-linux.org>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: <stable@kernel.org>

9 years agodrm/radeon/kms: force legacy pll algo for RV620 LVDS
Alex Deucher [Tue, 7 Sep 2010 15:42:45 +0000]
drm/radeon/kms: force legacy pll algo for RV620 LVDS

There has been periodic evidence that LVDS, on at least some
panels, prefers the dividers selected by the legacy pll algo.
This patch forces the use of the legacy pll algo on RV620
LVDS panels.  The old behavior (new pll algo) can be selected
by setting the new_pll module parameter to 1.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=30029

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

9 years agodrm: fix race between driver loading and userspace open.
Dave Airlie [Tue, 14 Sep 2010 10:14:38 +0000]
drm: fix race between driver loading and userspace open.

Not 100% sure this is due to BKL removal, its most likely a combination
of that + userspace timing changes in udev/plymouth. The drm adds the sysfs
device before the driver has completed internal loading, this causes udev
to make the node and plymouth to open it before we've completed loading.

The proper solution is to delay the sysfs manipulation until later in loading
however this causes knock on issues with sysfs connector nodes, so we can use
the global mutex to serialise loading and userspace opens.

Reported-by: Toni Spets (hifi on #radeon)
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agodrm: Use a nondestructive mode for output detect when polling (v2)
Chris Wilson [Tue, 14 Sep 2010 10:07:23 +0000]
drm: Use a nondestructive mode for output detect when polling (v2)

v2: Julien Cristau pointed out that @nondestructive results in
double-negatives and confusion when trying to interpret the parameter,
so use @force instead. Much easier to type as well. ;-)

And fix the miscompilation of vmgfx reported by Sedat Dilek.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agoHID: fix hiddev's use of usb_find_interface
Guillaume Chazarain [Sun, 12 Sep 2010 19:32:35 +0000]
HID: fix hiddev's use of usb_find_interface

My macbook infrared remote control was broken by commit
bd25f4dd6972755579d0ea50d1a5ace2e9b00d1a ("HID: hiddev: use
usb_find_interface, get rid of BKL").

This device appears in dmesg as:
apple 0003:05AC:8242.0001: hiddev0,hidraw0: USB HID v1.11 Device
[Apple Computer, Inc. IR Receiver] on usb-0000:00:1d.2-1/input0

It stopped working as lircd was getting ENODEV when opening /dev/usb/hiddev0.

AFAICS hiddev_driver is a dummy driver so usb_find_interface(&hiddev_driver)
does not find anything.

The device is associated with the usbhid driver, so let's do
usb_find_interface(&hid_driver) instead.

$ ls -l /sys/devices/pci0000:00/0000:00:1d.2/usb7/7-1/7-1:1.0/usb/hiddev0/device/driver
lrwxrwxrwx 1 root root 0 2010-09-12 16:28 /sys/devices/pci0000:00/0000:00:1d.2/usb7/7-1/7-1:1.0/usb/hiddev0/device/driver -> ../../../../../../bus/usb/drivers/usbhid

Signed-off-by: Guillaume Chazarain <guichaz@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

9 years agoMerge branch 'sched/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip...
Linus Torvalds [Mon, 13 Sep 2010 21:34:27 +0000]
Merge branch 'sched/urgent' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  sched: Improve latencies under load by decreasing minimum scheduling granularity

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux...
Linus Torvalds [Mon, 13 Sep 2010 19:51:22 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/geert/linux-m68k

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k,m68knommu: Wire up fanotify_init, fanotify_mark, and prlimit64

9 years agoMerge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
Linus Torvalds [Mon, 13 Sep 2010 19:49:55 +0000]
Merge branch 'release' of git://git./linux/kernel/git/aegl/linux-2.6

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64] fix siglock

Quoth Tony:

 "I committed the fix for this last week prior to your -rc4 announcement
  reminding us to give proper "Reported-by:" credit.  This one should have
  had:

  Reported-by: Tony Ernst <tee@sgi.com>

  and also

  Much-useful-investigation-and-tracing-by: Hedi Berriche <hedi@sgi.com>
  Much-useful-investigation-and-tracing-by: Petr Tesarik <ptesarik@novell.com>"

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Mon, 13 Sep 2010 19:47:08 +0000]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: prevent possible memory corruption in cifs_demultiplex_thread
  cifs: eliminate some more premature cifsd exits
  cifs: prevent cifsd from exiting prematurely
  [CIFS] ntlmv2/ntlmssp remove-unused-function CalcNTLMv2_partial_mac_key
  cifs: eliminate redundant xdev check in cifs_rename
  Revert "[CIFS] Fix ntlmv2 auth with ntlmssp"
  Revert "missing changes during ntlmv2/ntlmssp auth and sign"
  Revert "Eliminate sparse warning - bad constant expression"
  Revert "[CIFS] Eliminate unused variable warning"

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh...
Linus Torvalds [Mon, 13 Sep 2010 19:46:35 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  fs/9p: Don't use dotl version of mknod for dotu inode operations
  fs/9p: Use the correct dentry operations
  9p: Check for NULL fid in v9fs_dir_release()
  fs/9p: Fix error handling in v9fs_get_sb
  fs/9p, net/9p: memory leak fixes

9 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux...
Linus Torvalds [Mon, 13 Sep 2010 19:46:09 +0000]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs-2.6:
  dquot: do full inode dirty in allocating space

9 years agoMerge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6
Linus Torvalds [Mon, 13 Sep 2010 19:45:50 +0000]
Merge branch 'next-spi' of git://git.secretlab.ca/git/linux-2.6

* 'next-spi' of git://git.secretlab.ca/git/linux-2.6:
  spi/pl022: move probe call to subsys_initcall()
  powerpc/5200: mpc52xx_uart.c: Add of_node_put to avoid memory leak
  spi/pl022: fix APB pclk power regression on U300
  spi/spi_s3c64xx: Warn if PIO transfers time out
  spi/s3c64xx: Fix incorrect reuse of 'val' local variable.
  spi/s3c64xx: Fix compilation warning
  spi/dw_spi: clean the cs_control code
  spi/dw_spi: Allow interrupt sharing
  spi/spi_s3c64xx: Increase dead reckoning time in wait_for_xfer()
  spi/spi_s3c64xx: Move to subsys_initcall()
  spi: free children in spi_unregister_master, not siblings
  gpiolib: Add 'struct gpio_chip' forward declaration for !GPIOLIB case
  of: Fix missing includes - ll_temac
  spi/spi_s3c64xx: Staticise non-exported functions
  spi/spi_s3c64xx: Make probe more robust against missing board config

9 years agom68k,m68knommu: Wire up fanotify_init, fanotify_mark, and prlimit64
Geert Uytterhoeven [Mon, 16 Aug 2010 12:05:20 +0000]
m68k,m68knommu: Wire up fanotify_init, fanotify_mark, and prlimit64

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Greg Ungerer <gerg@uclinux.org>

9 years agosched: Improve latencies under load by decreasing minimum scheduling granularity
Ingo Molnar [Sun, 12 Sep 2010 06:14:52 +0000]
sched: Improve latencies under load by decreasing minimum scheduling granularity

Mathieu reported bad latencies with make -j10 kind of kbuild
workloads - which is mostly caused by us scheduling with a
too coarse granularity.

Reduce the minimum granularity some more, to make sure we
can meet the latency target.

I got the following results (make -j10 kbuild load, average of 3
runs):

 vanilla:

  maximum latency: 38278.9 µs
  average latency:  7730.1 µs

 patched:

  maximum latency: 22702.1 µs
  average latency:  6684.8 µs

Mathieu also measured it:

|
| * wakeup-latency.c (SIGEV_THREAD) with make -j10
|
| - Mainline 2.6.35.2 kernel
|
| maximum latency: 45762.1 µs
| average latency: 7348.6 µs
|
| - With only Peter's smaller min_gran (shown below):
|
| maximum latency: 29100.6 µs
| average latency: 6684.1 µs
|

Reported-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Suggested-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <AANLkTi=8m4g01wZPacySoF7U0PevTNVgJoZZrHiUD-pN@mail.gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

9 years agofs/9p: Don't use dotl version of mknod for dotu inode operations
Aneesh Kumar K.V [Mon, 30 Aug 2010 17:43:07 +0000]
fs/9p: Don't use dotl version of mknod for dotu inode operations

We should not use dotlversion for the dotu inode operations

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

9 years agofs/9p: Use the correct dentry operations
Aneesh Kumar K.V [Mon, 30 Aug 2010 16:04:35 +0000]
fs/9p: Use the correct dentry operations

We should use the cached dentry operation only if caching mode is enabled

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

9 years ago9p: Check for NULL fid in v9fs_dir_release()
jvrao [Wed, 25 Aug 2010 16:26:21 +0000]
9p: Check for NULL fid in v9fs_dir_release()

NULL fid should be handled in cases where we endup calling v9fs_dir_release()
before even we instantiate the fid in filp.

Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

9 years agofs/9p: Fix error handling in v9fs_get_sb
Aneesh Kumar K.V [Tue, 24 Aug 2010 10:30:49 +0000]
fs/9p: Fix error handling in v9fs_get_sb

This was introduced by 7cadb63d58a932041afa3f957d5cbb6ce69dcee5

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

9 years agofs/9p, net/9p: memory leak fixes
Latchesar Ionkov [Tue, 24 Aug 2010 18:13:59 +0000]
fs/9p, net/9p: memory leak fixes

Four memory leak fixes in the 9P code.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>

9 years agodrm/radeon/kms: fix the colorbuffer CS checker for r300-r500
Marek Olšák [Sun, 12 Sep 2010 03:09:13 +0000]
drm/radeon/kms: fix the colorbuffer CS checker for r300-r500

This commit fixes bogus CS rejection if it contains a sequence
of the following operations:

- Set the color buffer 0. track->cb[i].robj becomes non-NULL.
- Render.
- Set a larger zbuffer than the previously-set color buffer.
- Set a larger scissor area as well.
- Set the color channel mask to 0 to do depth-only rendering.
- Render. --> rejected, because track->cb[i].robj remained non-NULL,
  therefore the conditional checking for the color channel mask and
  friends is not performed, and the larger scissor area causes
  the rejection.

This fixes bugs:
- https://bugs.freedesktop.org/show_bug.cgi?id=29762
- https://bugs.freedesktop.org/show_bug.cgi?id=28869
And maybe some others which seem to look the same.

If possible, this commit should go to stable as well.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agodrm/radeon/kms: increase lockup detection interval to 10 sec for r100-r500
Marek Olšák [Sun, 12 Sep 2010 03:09:12 +0000]
drm/radeon/kms: increase lockup detection interval to 10 sec for r100-r500

One subtest of mesa/demos/gltestperf takes 9 seconds to complete,
so to prevent an unnecessary gpu reset followed by a hardlock, I am
increasing the interval to 10 seconds after which a GPU is considered
in a locked-up state. This is on RV530. However, with a little slower GPU,
we would surpass the interval easily, so this is not a good fix
for gltestperf.

Nevertheless, this commit also fixes hardlocks in the applications which
render at speed of less than 1 frame per second, where the whole frame
consists of only one command stream. The game Tiny & Big is an example.
This bar is now lowered to 0.1 fps.

Now the question comes down to whether we should (often unsuccessfully)
reset the GPU at all? Once we have stable enough drivers, we won't have to.
Has the time come already?

If possible, this commit should go to stable as well.

Signed-off-by: Marek Olšák <maraeo@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agodrm/radeon/kms/evergreen: fix backend setup
Alex Deucher [Thu, 9 Sep 2010 23:15:23 +0000]
drm/radeon/kms/evergreen: fix backend setup

This patch fixes rendering errors on some evergreen boards.
Hardcoding the backend map is not an optimal solution, but
a better fix is being worked on.

Similar to the fix for rv740
(6271901d828b34b27607314026deaf417f9f9b75).

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=29986

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

9 years agodrm: Use a nondestructive mode for output detect when polling
Chris Wilson [Thu, 9 Sep 2010 22:51:02 +0000]
drm: Use a nondestructive mode for output detect when polling

Destructive load-detection is very expensive and due to failings
elsewhere can trigger system wide stalls of up to 600ms. A simple
first step to correcting this is not to invoke such an expensive
and destructive load-detection operation automatically.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29536
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=16265
Reported-by: Bruno Prémont <bonbons@linux-vserver.org>
Tested-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agodrm/radeon: add some missing copyright headers
Alex Deucher [Thu, 9 Sep 2010 15:31:13 +0000]
drm/radeon: add some missing copyright headers

Noticed while adding evergreen blit support.

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

9 years agodrm: Only decouple the old_fb from the crtc is we call mode_set*
Chris Wilson [Thu, 9 Sep 2010 08:41:32 +0000]
drm: Only decouple the old_fb from the crtc is we call mode_set*

Otherwise when disabling the output we switch to the new fb (which is
likely NULL) and skip the call to mode_set -- leaking driver private
state on the old_fb.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29857
Reported-by: Sitsofe Wheeler <sitsofe@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agodrm/radeon/kms: don't enable underscan with interlaced modes
Alex Deucher [Fri, 10 Sep 2010 07:19:05 +0000]
drm/radeon/kms: don't enable underscan with interlaced modes

They aren't compatible.

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

9 years agodrm/radeon/kms: add connector table for Mac x800
Alex Deucher [Tue, 7 Sep 2010 18:41:30 +0000]
drm/radeon/kms: add connector table for Mac x800

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=28671

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

9 years agodrm/radeon/kms: fix regression in RMX code (v2)
Alex Deucher [Tue, 7 Sep 2010 17:26:39 +0000]
drm/radeon/kms: fix regression in RMX code (v2)

caused by d65d65b175a29bd7ea2bb69c046419329c4a5db7

need to update the radeon crtc priv native mode before using it.

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=30049

v2: integrate v/h copy paste typo

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

9 years agodrm: Fix regression in disable polling e58f637
Chris Wilson [Mon, 6 Sep 2010 22:53:47 +0000]
drm: Fix regression in disable polling e58f637

I broke out my trusty i845 and found a new boot failure, which upon
inspection turned out to be a recursion within:

drm_helper_probe_single_connector_modes() -> drm_helper_hpd_irq_event()
-> intel_crt_detect() -> drm_helper_probe_single_connector_modes()

Calling drm_kms_helper_poll_enable() instead performs the desired
re-initialisation of the polling should the user have toggled the
parameter, without the recursive side-effect.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Dave Airlie <airlied@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

9 years agoworkqueue: add documentation
Tejun Heo [Fri, 10 Sep 2010 14:51:36 +0000]
workqueue: add documentation

Update copyright notice and add Documentation/workqueue.txt.

Randy Dunlap, Dave Chinner: misc fixes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-By: Florian Mickler <florian@mickler.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Christoph Lameter <cl@linux-foundation.org>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Dave Chinner <david@fromorbit.com>

9 years agomtd: pxa3xx: fix build error when CONFIG_MTD_PARTITIONS is not defined
Mark F. Brown [Thu, 26 Aug 2010 08:56:51 +0000]
mtd: pxa3xx: fix build error when CONFIG_MTD_PARTITIONS is not defined

Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

9 years agomtd: mxc_nand: configure pages per block for v2 controller
Sascha Hauer [Mon, 9 Aug 2010 13:04:19 +0000]
mtd: mxc_nand: configure pages per block for v2 controller

This patch initializes the pages per block field in CONFIG1 for
v2 controllers. It also sets the FP_INT field. This is the last
field not correctly initialized, so we can switch from
read/modify/write the CONFIG1 reg to just write the correct
value.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: John Ogness <john.ogness@linutronix.de>
Tested-by: John Ogness <john.ogness@linutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

9 years agomtd: OneNAND: Fix loop hang when DMA error at Samsung SoCs
Kyungmin Park [Fri, 27 Aug 2010 02:55:37 +0000]
mtd: OneNAND: Fix loop hang when DMA error at Samsung SoCs

When DMA error occurs. it's loop hang since it can't exit the loop.
and it's the right DMA handling code as Spec.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

9 years agomtd: OneNAND: Fix 2KiB pagesize handling at Samsung SoCs
Kyungmin Park [Fri, 27 Aug 2010 02:55:44 +0000]
mtd: OneNAND: Fix 2KiB pagesize handling at Samsung SoCs

Wrong assumption bufferram can be switched between BufferRAM0 and BufferRAM1

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

9 years agomtd: Blackfin NFC: fix invalid free in remove()
Mike Frysinger [Sat, 28 Aug 2010 20:42:04 +0000]
mtd: Blackfin NFC: fix invalid free in remove()

Since info->mtd isn't dynamically allocated, we shouldn't attempt to
kfree() it.  Otherwise we get random fun corruption when unloading
the driver built as a module.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

9 years agomtd: Blackfin NFC: fix build error after nand_scan_ident() change
Mike Frysinger [Sat, 28 Aug 2010 05:45:00 +0000]
mtd: Blackfin NFC: fix build error after nand_scan_ident() change

Seems some patches got out sync when being merged.  The Blackfin NFC
driver was updated to use nand_scan_ident(), but it missed the change
where nand_scan_ident() now takes 3 arguments.  So update this driver
to fix build failures.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

9 years agoSUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependencies
Trond Myklebust [Sun, 12 Sep 2010 23:57:50 +0000]
SUNRPC: Fix the NFSv4 and RPCSEC_GSS Kconfig dependencies

The NFSv4 client's callback server calls svc_gss_principal(), which
is defined in the auth_rpcgss.ko

The NFSv4 server has the same dependency, and in addition calls
svcauth_gss_flavor(), gss_mech_get_by_pseudoflavor(),
gss_pseudoflavor_to_service() and gss_mech_put() from the same module.

The module auth_rpcgss itself has no dependencies aside from sunrpc,
so we only need to select RPCSEC_GSS.

Reported-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agostatfs() gives ESTALE error
Menyhart Zoltan [Sun, 12 Sep 2010 23:55:26 +0000]
statfs() gives ESTALE error

Hi,

An NFS client executes a statfs("file", &buff) call.
"file" exists / existed, the client has read / written it,
but it has already closed it.

user_path(pathname, &path) looks up "file" successfully in the
directory-cache  and restarts the aging timer of the directory-entry.
Even if "file" has already been removed from the server, because the
lookupcache=positive option I use, keeps the entries valid for a while.

nfs_statfs() returns ESTALE if "file" has already been removed from the
server.

If the user application repeats the statfs("file", &buff) call, we
are stuck: "file" remains young forever in the directory-cache.

Signed-off-by: Zoltan Menyhart <Zoltan.Menyhart@bull.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

9 years agoNFS: Fix a typo in nfs_sockaddr_match_ipaddr6
Trond Myklebust [Sun, 12 Sep 2010 23:55:26 +0000]
NFS: Fix a typo in nfs_sockaddr_match_ipaddr6

Reported-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

9 years agosunrpc: increase MAX_HASHTABLE_BITS to 14
Miquel van Smoorenburg [Sun, 12 Sep 2010 23:55:26 +0000]
sunrpc: increase MAX_HASHTABLE_BITS to 14

The maximum size of the authcache is now set to 1024 (10 bits),
but on our server we need at least 4096 (12 bits). Increase
MAX_HASHTABLE_BITS to 14. This is a maximum of 16384 entries,
each containing a pointer (8 bytes on x86_64). This is
exactly the limit of kmalloc() (128K).

Signed-off-by: Miquel van Smoorenburg <mikevs@xs4all.net>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss:spkm3 miss returning error to caller when import security context
Bian Naimeng [Sun, 12 Sep 2010 23:55:26 +0000]
gss:spkm3 miss returning error to caller when import security context

spkm3 miss returning error to up layer when import security context,
it may be return ok though it has failed to import security context.

Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agogss:krb5 miss returning error to caller when import security context
Bian Naimeng [Sun, 12 Sep 2010 23:55:25 +0000]
gss:krb5 miss returning error to caller when import security context

krb5 miss returning error to up layer when import security context,
it may be return ok though it has failed to import security context.

Signed-off-by: Bian Naimeng <biannm@cn.fujitsu.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agoRemove incorrect do_vfs_lock message
Fabio Olive Leite [Sun, 12 Sep 2010 23:55:25 +0000]
Remove incorrect do_vfs_lock message

The do_vfs_lock function on fs/nfs/file.c is only called if NLM is
not being used, via the -onolock mount option. Therefore it cannot
really be "out of sync with lock manager" when the local locking
function called returns an error, as there will be no corresponding
call to the NLM. For details, simply check the if/else on do_setlk
and do_unlk on fs/nfs/file.c.

Signed-Off-By: Fabio Olive Leite <fleite@redhat.com>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agoSUNRPC: cleanup state-machine ordering
J. Bruce Fields [Sun, 12 Sep 2010 23:55:25 +0000]
SUNRPC: cleanup state-machine ordering

This is just a minor cleanup: net/sunrpc/clnt.c clarifies the rpc client
state machine by commenting each state and by laying out the functions
implementing each state in the order that each state is normally
executed (in the absence of errors).

The previous patch "Fix null dereference in call_allocate" changed the
order of the states.  Move the functions and update the comments to
reflect the change.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

9 years agoSUNRPC: Fix a race in rpc_info_open
Trond Myklebust [Sun, 12 Sep 2010 23:55:25 +0000]
SUNRPC: Fix a race in rpc_info_open

There is a race between rpc_info_open and rpc_release_client()
in that nothing stops a process from opening the file after
the clnt->cl_kref goes to zero.

Fix this by using atomic_inc_unless_zero()...

Reported-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

9 years agoSUNRPC: Fix race corrupting rpc upcall
Trond Myklebust [Sun, 12 Sep 2010 23:55:25 +0000]
SUNRPC: Fix race corrupting rpc upcall

If rpc_queue_upcall() adds a new upcall to the rpci->pipe list just
after rpc_pipe_release calls rpc_purge_list(), but before it calls
gss_pipe_release (as rpci->ops->release_pipe(inode)), then the latter
will free a message without deleting it from the rpci->pipe list.

We will be left with a freed object on the rpc->pipe list.  Most
frequent symptoms are kernel crashes in rpc.gssd system calls on the
pipe in question.

Reported-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

9 years agoFix null dereference in call_allocate
J. Bruce Fields [Sun, 12 Sep 2010 23:55:25 +0000]
Fix null dereference in call_allocate

In call_allocate we need to reach the auth in order to factor au_cslack
into the allocation.

As of a17c2153d2e271b0cbacae9bed83b0eaa41db7e1 "SUNRPC: Move the bound
cred to struct rpc_rqst", call_allocate attempts to do this by
dereferencing tk_client->cl_auth, however this is not guaranteed to be
defined--cl_auth can be zero in the case of gss context destruction (see
rpc_free_auth).

Reorder the client state machine to bind credentials before allocating,
so that we can instead reach the auth through the cred.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org

9 years agoLinux 2.6.36-rc4
Linus Torvalds [Sun, 12 Sep 2010 23:07:37 +0000]
Linux 2.6.36-rc4

9 years agodocbook: skip files with no docs since they generate scary warnings
Randy Dunlap [Sat, 11 Sep 2010 22:55:26 +0000]
docbook: skip files with no docs since they generate scary warnings

Fix docbook templates that reference files that do not contain the
expected kernel-doc notation.

Fixes these warnings:

  Warning(arch/x86/include/asm/unaligned.h): no structured comments found
  Warning(lib/vsprintf.c): no structured comments found

These cause errors in the generated html output, like below, so drop
these lines.

  Name
  arch/x86/include/asm/unaligned.h - Document generation inconsistency
  Oops
  Warning
  The template for this document tried to insert the structured comment from the file arch/x86/include/asm/unaligned.h at this point, but none was found. This dummy section is inserted to allow generation to continue.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agodocbook: warn on unused doc entries
Johannes Berg [Sat, 11 Sep 2010 22:55:22 +0000]
docbook: warn on unused doc entries

When you don't use !E or !I but only !F, then it's very easy to miss
including some functions, structs etc.  in documentation.  To help
finding which ones were missed, allow printing out the unused ones as
warnings.

For example, using this on mac80211 yields a lot of warnings like this:

  Warning: didn't use docs for DOC: mac80211 workqueue
  Warning: didn't use docs for ieee80211_max_queues
  Warning: didn't use docs for ieee80211_bss_change
  Warning: didn't use docs for ieee80211_bss_conf

when generating the documentation for it.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agokernel-doc: ignore case when stripping attributes
Johannes Berg [Sat, 11 Sep 2010 22:55:12 +0000]
kernel-doc: ignore case when stripping attributes

There are valid attributes that could have upper case letters, but we
still want to remove, like for example
__attribute__((aligned(NETDEV_ALIGN)))
as encountered in the wireless code.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

9 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Sat, 11 Sep 2010 22:50:53 +0000]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Hibernate: Avoid hitting OOM during preallocation of memory
  PM QoS: Correct pr_debug() misuse and improve parameter checks
  PM: Prevent waiting forever on asynchronous resume after failing suspend

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Sat, 11 Sep 2010 19:17:02 +0000]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] fix use-after-free in scsi_init_io()
  [SCSI] sd: fix medium-removal bug
  [SCSI] qla2xxx: Update version number to 8.03.04-k0.
  [SCSI] qla2xxx: Check for empty slot in request queue before posting Command type 6 request.
  [SCSI] qla2xxx: Cover UNDERRUN case where SCSI status is set.
  [SCSI] qla2xxx: Correctly set fw hung and complete only waiting mbx.
  [SCSI] qla2xxx: Reset seconds_since_last_heartbeat correctly.
  [SCSI] qla2xxx: make rport deletions explicit during vport removal
  [SCSI] qla2xxx: Fix vport delete issues
  [SCSI] sd, sym53c8xx: Remove warnings after vsprintf %pV introducation.
  [SCSI] Fix warning: zero-length gnu_printf format string
  [SCSI] hpsa: disable doorbell reset on reset_devices
  [SCSI] be2iscsi: Fix for Login failure
  [SCSI] fix bio.bi_rw handling

9 years agoPM / Hibernate: Avoid hitting OOM during preallocation of memory
Rafael J. Wysocki [Sat, 11 Sep 2010 18:58:27 +0000]
PM / Hibernate: Avoid hitting OOM during preallocation of memory

There is a problem in hibernate_preallocate_memory() that it calls
preallocate_image_memory() with an argument that may be greater than
the total number of available non-highmem memory pages.  If that's
the case, the OOM condition is guaranteed to trigger, which in turn
can cause significant slowdown to occur during hibernation.

To avoid that, make preallocate_image_memory() adjust its argument
before calling preallocate_image_pages(), so that the total number of
saveable non-highem pages left is not less than the minimum size of
a hibernation image.  Change hibernate_preallocate_memory() to try to
allocate from highmem if the number of pages allocated by
preallocate_image_memory() is too low.

Modify free_unnecessary_pages() to take all possible memory
allocation patterns into account.

Reported-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Tested-by: M. Vefa Bicakci <bicave@superonline.com>

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Sat, 11 Sep 2010 15:06:38 +0000]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (28 commits)
  ipheth: remove incorrect devtype to WWAN
  MAINTAINERS: Add CAIF
  sctp: fix test for end of loop
  KS8851: Correct RX packet allocation
  udp: add rehash on connect()
  net: blackhole route should always be recalculated
  ipv4: Suppress lockdep-RCU false positive in FIB trie (3)
  niu: Fix kernel buffer overflow for ETHTOOL_GRXCLSRLALL
  ipvs: fix active FTP
  gro: Re-fix different skb headrooms
  via-velocity: Turn scatter-gather support back off.
  ipv4: Fix reverse path filtering with multipath routing.
  UNIX: Do not loop forever at unix_autobind().
  PATCH: b44 Handle RX FIFO overflow better (simplified)
  irda: off by one
  3c59x: Fix deadlock in vortex_error()
  netfilter: discard overlapping IPv6 fragment
  ipv6: discard overlapping fragment
  net: fix tx queue selection for bridged devices implementing select_queue
  bonding: Fix jiffies overflow problems (again)
  ...

Fix up trivial conflicts due to the same cgroup API thinko fix going
through both Andrew and the networking tree.  However, there were small
differences between the two, with Andrew's version generally being the
nicer one, and the one I merged first. So pick that one.

Conflicts in: include/linux/cgroup.h and kernel/cgroup.c

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Sat, 11 Sep 2010 15:01:09 +0000]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc: Kill all BKL usage.

9 years agoMerge branch 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 11 Sep 2010 14:59:49 +0000]
Merge branch 'sched-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'sched-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86, tsc: Fix a preemption leak in restore_sched_clock_state()
  sched: Move sched_avg_update() to update_cpu_load()

9 years agox86, tsc: Fix a preemption leak in restore_sched_clock_state()
Peter Zijlstra [Fri, 10 Sep 2010 20:32:53 +0000]
x86, tsc: Fix a preemption leak in restore_sched_clock_state()

Doh, a real life genuine preemption leak..

This caused a suspend failure.

Reported-bisected-and-tested-by-the-invaluable: Jeff Chua <jeff.chua.linux@gmail.com>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Nico Schottelius <nico-linux-20100709@schottelius.org>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Florian Pritz <flo@xssn.at>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Len Brown <lenb@kernel.org>
Cc: <stable@kernel.org> # Greg, please apply after: cd7240c ("x86, tsc, sched: Recompute cyc2ns_offset's during resume from")
sleep states
LKML-Reference: <1284150773.402.122.camel@laptop>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

9 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle...
Linus Torvalds [Sat, 11 Sep 2010 01:19:43 +0000]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
  drm/i915: don't enable self-refresh on Ironlake
  drm/i915: Double check that the wait_request is not pending before warning
  Revert "drm/i915: Warn if we run out of FIFO space for a mode"
  Revert "drm/i915: Allow LVDS on pipe A on gen4+"
  Revert "drm/i915: Enable RC6 on Ironlake."

9 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Sat, 11 Sep 2010 01:19:26 +0000]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  xfs: log IO completion workqueue is a high priority queue
  xfs: prevent reading uninitialized stack memory

9 years agox86, tsc: Fix a preemption leak in restore_sched_clock_state()
Peter Zijlstra [Fri, 10 Sep 2010 20:32:53 +0000]
x86, tsc: Fix a preemption leak in restore_sched_clock_state()

A real life genuine preemption leak..

Reported-and-tested-by: Jeff Chua <jeff.chua.linux@gmail.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>