GitHub/LineageOS/android_kernel_samsung_universal7580.git
14 years agopowerpc/powermac: Drop unnecessary of_node_put
Julia Lawall [Tue, 3 Aug 2010 09:50:32 +0000 (09:50 +0000)]
powerpc/powermac: Drop unnecessary of_node_put

for_each_node_by_name only exits when its first argument is NULL, and a
subsequent call to of_node_put on that argument is unnecessary.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
iterator name for_each_node_by_name;
expression np,E;
identifier l;
@@

for_each_node_by_name(np,...) {
  ... when != break;
      when != goto l;
}
... when != np = E
- of_node_put(np);
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
14 years agopowerpc/kdump: Stop all other CPUs before running crash handlers
Anton Blanchard [Mon, 2 Aug 2010 20:39:41 +0000 (20:39 +0000)]
powerpc/kdump: Stop all other CPUs before running crash handlers

During kdump we run the crash handlers first then stop all other CPUs.
We really want to stop all CPUs as close to the fail as possible and also
have a very controlled environment for running the crash handlers, so it
makes sense to reverse the order.

Signed-off-by: Anton Blanchard <anton@samba.org>
Acked-by: Matt Evans <matt@ozlabs.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
14 years agopowerpc/mm: Fix vsid_scrample typo
Anton Blanchard [Mon, 2 Aug 2010 20:35:18 +0000 (20:35 +0000)]
powerpc/mm: Fix vsid_scrample typo

The code is wrapped in an #if 0, but it's wrong so we may as well fix it.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
14 years agopowerpc: Use is_32bit_task() helper to test 32 bit binary
Denis Kirjanov [Thu, 29 Jul 2010 22:04:39 +0000 (22:04 +0000)]
powerpc: Use is_32bit_task() helper to test 32 bit binary

Use is_32bit_task() helper to test 32 bit binary.

Signed-off-by: Denis Kirjanov <dkirjanov@kernel.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
14 years agopowerpc: Export memstart_addr and kernstart_addr on ppc64
Sonny Rao [Thu, 19 Aug 2010 18:08:09 +0000 (18:08 +0000)]
powerpc: Export memstart_addr and kernstart_addr on ppc64

Some modules (like eHCA) want to map all of kernel memory, for this to
work with a relocated kernel, we need to export kernstart_addr so
modules can use PHYSICAL_START and memstart_addr so they could use
MEMORY_START.  Note that the 32bit code already exports these symbols.

Signed-off-By: Sonny Rao <sonnyrao@us.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
14 years agopowerpc: Make rwsem use "long" type
Benjamin Herrenschmidt [Tue, 24 Aug 2010 04:41:48 +0000 (14:41 +1000)]
powerpc: Make rwsem use "long" type

This makes the 64-bit kernel use 64-bit signed integers for the counter
(effectively supporting 32-bit of active count in the semaphore), thus
avoiding things like overflow of the mmap_sem if you use a really crazy
number of threads

Note: Ideally the type in the structure should be atomic_long_t rather
than "long". However, there's some nasty issues with that. It needs to
be initialized statically -and- lib/rwsem.c does things like

        sem->count = RWSEM_UNLOCKED_VALUE;

Now, if you mix in the fact that atomic_* types are actually structures
with one member and note typedefs of a scalar, it makes its really nasty.

So I stuck to what we did before using a long and casts for now.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
14 years agoMerge remote branch 'jwb/merge' into merge
Benjamin Herrenschmidt [Tue, 24 Aug 2010 04:36:45 +0000 (14:36 +1000)]
Merge remote branch 'jwb/merge' into merge

14 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Tue, 24 Aug 2010 01:30:30 +0000 (18:30 -0700)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (27 commits)
  netfilter: fix CONFIG_COMPAT support
  isdn/avm: fix build when PCMCIA is not enabled
  header: fix broken headers for user space
  e1000e: don't check for alternate MAC addr on parts that don't support it
  e1000e: disable ASPM L1 on 82573
  ll_temac: Fix poll implementation
  netxen: fix a race in netxen_nic_get_stats()
  qlnic: fix a race in qlcnic_get_stats()
  irda: fix a race in irlan_eth_xmit()
  net: sh_eth: remove unused variable
  netxen: update version 4.0.74
  netxen: fix inconsistent lock state
  vlan: Match underlying dev carrier on vlan add
  ibmveth: Fix opps during MTU change on an active device
  ehea: Fix synchronization between HW and SW send queue
  bnx2x: Update bnx2x version to 1.52.53-4
  bnx2x: Fix PHY locking problem
  rds: fix a leak of kernel memory
  netlink: fix compat recvmsg
  netfilter: fix userspace header warning
  ...

14 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platf...
Linus Torvalds [Tue, 24 Aug 2010 01:29:34 +0000 (18:29 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/mjg59/platform-drivers-x86

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mjg59/platform-drivers-x86:
  hp-wmi: Fix query interface
  ACPI_TOSHIBA needs LEDS support

14 years agoMerge branch 'for-upstream/pvhvm' of git://xenbits.xensource.com/people/ianc/linux-2.6
Linus Torvalds [Tue, 24 Aug 2010 01:29:18 +0000 (18:29 -0700)]
Merge branch 'for-upstream/pvhvm' of git://xenbits.xensource.com/people/ianc/linux-2.6

* 'for-upstream/pvhvm' of git://xenbits.xensource.com/people/ianc/linux-2.6:
  xen: pvhvm: make it clearer that XEN_UNPLUG_* define bits in a bitfield
  xen: pvhvm: rename xen_emul_unplug=ignore to =unnnecessary
  xen: pvhvm: allow user to request no emulated device unplug

14 years agoMerge branch 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuil...
Linus Torvalds [Tue, 24 Aug 2010 01:28:24 +0000 (18:28 -0700)]
Merge branch 'rc-fixes' of git://git./linux/kernel/git/mmarek/kbuild-2.6

* 'rc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild-2.6:
  setlocalversion: Ignote SCMs above the linux source tree
  makefile: not need to regenerate kernel.release file when make kernelrelease
  fixes for using make 3.82
  kconfig: fix segfault when detecting recursive dependency
  kconfig: fix savedefconfig with choice marked optional

14 years agoMerge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Tue, 24 Aug 2010 01:28:03 +0000 (18:28 -0700)]
Merge branch 'drm-core-next' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: (33 commits)
  drm/radeon/kms: fix typo in radeon_compute_pll_gain
  drm/radeon/kms: try to detect tv vs monitor for underscan
  drm/radeon/kms: fix sideport detection on newer rs880 boards
  drm/radeon: fix passing wrong type to gem object create.
  drm/radeon/kms: set encoder type to DVI for HDMI on evergreen
  drm/radeon/kms: add back missing break in info ioctl
  drm/radeon/kms: don't enable MSIs on AGP boards
  drm/radeon/kms: fix agp mode setup on cards that use pcie bridges
  drm: move dereference below check
  drm: fix end of loop test
  drm/radeon/kms: rework radeon_dp_detect() logic
  drm/radeon/kms: add missing asic callback assignment for evergreen
  drm/radeon/kms/DCE3+: switch pads to ddc mode when going i2c
  drm/radeon/kms/pm: bail early if nothing's changing
  drm/radeon/kms/atom: clean up dig atom handling
  drm/radeon/kms: DCE3/4 transmitter fixes
  drm/radeon/kms: rework encoder handling
  drm/radeon/kms: DCE3/4 AdjustPixelPll updates
  drm/radeon: Fix stack data leak
  drm/radeon/kms: fix GTT/VRAM overlapping test
  ...

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier...
Linus Torvalds [Tue, 24 Aug 2010 01:27:40 +0000 (18:27 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/vapier/blackfin

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin:
  Blackfin: wire up new fanotify/prlimit64 syscalls
  ADI/ASoC: add MAINTAINERS entries
  Blackfin: fix hweight breakage

14 years agonetfilter: fix CONFIG_COMPAT support
Florian Westphal [Mon, 23 Aug 2010 21:41:22 +0000 (14:41 -0700)]
netfilter: fix CONFIG_COMPAT support

commit f3c5c1bfd430858d3a05436f82c51e53104feb6b
(netfilter: xtables: make ip_tables reentrant) forgot to
also compute the jumpstack size in the compat handlers.

Result is that "iptables -I INPUT -j userchain" turns into -j DROP.

Reported by Sebastian Roesner on #netfilter, closes
http://bugzilla.netfilter.org/show_bug.cgi?id=669.

Note: arptables change is compile-tested only.

Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Tested-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agohp-wmi: Fix query interface
Matthew Garrett [Mon, 23 Aug 2010 19:52:34 +0000 (15:52 -0400)]
hp-wmi: Fix query interface

The machines I have appear to provide their return value in the arguments
structure, not the output structure. Rework the driver to use that again
in order to get rfkill working again.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
14 years agoACPI_TOSHIBA needs LEDS support
Jonathan Corbet [Mon, 23 Aug 2010 17:32:36 +0000 (11:32 -0600)]
ACPI_TOSHIBA needs LEDS support

Don't ask how ACPI_TOSHIBA got enabled on in desktop system's .config -
I don't know.  But it has silently been there until I tried 2.6.36-rc2,
where it broke the build because I don't have LED support turned on.
Attached patch fixes things up.

(I had to change BACKLIGHT_CLASS_DEVICE to "depends" because otherwise
I get unsightly core dumps out of scripts/kconfig/conf).

jon

--
toshiba: make sure we pull in LED support

The Toshiba extras driver uses the LED module, so make sure we have it
configure in.

Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
14 years agoarch/mn10300/mm: eliminate NULL dereference
Julia Lawall [Mon, 23 Aug 2010 13:31:34 +0000 (14:31 +0100)]
arch/mn10300/mm: eliminate NULL dereference

dev_name always dereferences its argument, so it should not be called if
the argument is NULL.  The function indeed later tests the argument for
being NULL.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

  // <smpl>
  @@
  expression dev,E;
  @@

  *dev_name(dev)
  ... when != dev = E
  (
  *dev == NULL
  |
  *dev != NULL
  )
  // </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge branch 'misc' of git://git.kernel.dk/linux-2.6-block
Linus Torvalds [Mon, 23 Aug 2010 17:36:04 +0000 (10:36 -0700)]
Merge branch 'misc' of git://git.kernel.dk/linux-2.6-block

* 'misc' of git://git.kernel.dk/linux-2.6-block:
  ipheth: add support for iPhone 4

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Mon, 23 Aug 2010 17:34:51 +0000 (10:34 -0700)]
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:
  ASoC: i.MX ssi: use SSI_STCCR in synchronous mode
  ALSA: hda - Add support for Lenovo S10-3t
  ALSA: hda - Fix stream and channel-ids codec-bus wide
  ALSA: hda - Fix conflict of sticky PCM parameter in HDMI codecs
  ALSA: intel8x0: Mute External Amplifier by default for ThinkPad X31
  ALSA: hda - Fix build error with CONFIG_PROC_FS=n
  ALSA: hda - Add support for IDT 92HD89XX codecs

14 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Mon, 23 Aug 2010 13:09:52 +0000 (15:09 +0200)]
Merge branch 'fix/asoc' into for-linus

14 years agoASoC: i.MX ssi: use SSI_STCCR in synchronous mode
Sascha Hauer [Mon, 23 Aug 2010 06:54:02 +0000 (08:54 +0200)]
ASoC: i.MX ssi: use SSI_STCCR in synchronous mode

In synchronous mode the SSI_SRCCR values are ignored. Instead
SSI_STCCR must be used for both receiving and transmitting.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
14 years agopowerpc/47x: Add an isync before the tlbivax instruction
Dave Kleikamp [Wed, 18 Aug 2010 06:44:26 +0000 (06:44 +0000)]
powerpc/47x: Add an isync before the tlbivax instruction

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
14 years agopowerpc/4xx: Index interrupt stacks by physical cpu
Dave Kleikamp [Wed, 18 Aug 2010 06:44:25 +0000 (06:44 +0000)]
powerpc/4xx: Index interrupt stacks by physical cpu

The interrupt stacks need to be indexed by the physical cpu since the
critical, debug and machine check handlers use the contents of SPRN_PIR to
index the critirq_ctx, dbgirq_ctx, and mcheckirq_ctx arrays.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
14 years agopowerpc/47x: Remove redundant line from cputable.c
Dave Kleikamp [Wed, 18 Aug 2010 06:44:24 +0000 (06:44 +0000)]
powerpc/47x: Remove redundant line from cputable.c

There are two entries for .cpu_user_features in
arch/powerpc/kernel/cputable.c.  Remove the one that doesn't belong

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
14 years agopowerpc/47x: Make sure mcsr is cleared before enabling machine check interrupts
Dave Kleikamp [Wed, 18 Aug 2010 06:44:23 +0000 (06:44 +0000)]
powerpc/47x: Make sure mcsr is cleared before enabling machine check interrupts

Clear the machine check syndrom register before enabling machine check
interrupts.  The initial state of the tlb can lead to parity errors being
flagged early after a cold boot.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
14 years agopowerpc/4xx: Device tree update for the 460ex DWC SATA
Rupjyoti Sarmah [Fri, 4 Jun 2010 00:03:12 +0000 (00:03 +0000)]
powerpc/4xx: Device tree update for the 460ex DWC SATA

Device tree update for the Applied micro processor 460ex on-chip SATA

Signed-off-by: Rupjyoti Sarmah <rsarmah@amcc.com>
Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
14 years agoxen: pvhvm: make it clearer that XEN_UNPLUG_* define bits in a bitfield
Ian Campbell [Mon, 23 Aug 2010 11:01:35 +0000 (12:01 +0100)]
xen: pvhvm: make it clearer that XEN_UNPLUG_* define bits in a bitfield

by defining in terms of (1<<N).

XEN_UNPLUG_UNNECESSARY and XEN_UNPLUG_NEVER are only used within the
kernel and are not defined as a bit on the unplug IO port. Therefore
use a bit which is outside the potentially valid range of the 16 bit
IO port.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
14 years agoxen: pvhvm: rename xen_emul_unplug=ignore to =unnnecessary
Ian Campbell [Mon, 23 Aug 2010 10:59:29 +0000 (11:59 +0100)]
xen: pvhvm: rename xen_emul_unplug=ignore to =unnnecessary

It is not immediately clear what this option causes to become
ignored. The actual meaning is that it is not necessary to unplug the
emulated devices to safely use the PV ones, even if the platform does
not support the unplug protocol. (pressumably the user will only add
this option if they have ensured that their domain configuration is
safe).

I think xen_emul_unplug=unnecessary better captures this.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
14 years agoxen: pvhvm: allow user to request no emulated device unplug
Ian Campbell [Mon, 23 Aug 2010 10:59:28 +0000 (11:59 +0100)]
xen: pvhvm: allow user to request no emulated device unplug

this allows the user to disable pvhvm and revert to emulated devices
in case of a system misconfiguration (e.g. initramfs with only
emulated drivers in it).

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Acked-by: Stefano Stabellini <Stefano.Stabellini@eu.citrix.com>
14 years agoipheth: add support for iPhone 4
Jens Axboe [Mon, 23 Aug 2010 10:39:29 +0000 (12:39 +0200)]
ipheth: add support for iPhone 4

This adds support for the iPhone 4 to the ipheth driver.

Acked-by: Diego Giagio <diego@giagio.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
14 years agoBlackfin: wire up new fanotify/prlimit64 syscalls
Mike Frysinger [Wed, 18 Aug 2010 19:25:30 +0000 (15:25 -0400)]
Blackfin: wire up new fanotify/prlimit64 syscalls

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
14 years agoADI/ASoC: add MAINTAINERS entries
Mike Frysinger [Thu, 12 Aug 2010 03:52:23 +0000 (23:52 -0400)]
ADI/ASoC: add MAINTAINERS entries

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
14 years agoBlackfin: fix hweight breakage
Mike Frysinger [Fri, 13 Aug 2010 21:42:39 +0000 (17:42 -0400)]
Blackfin: fix hweight breakage

The recent commit to add constant optimization to hweight implicitly broke
the Blackfin arch.  Seems we were missed when all the other arches were
fixed with renames.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
14 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Mon, 23 Aug 2010 06:47:06 +0000 (08:47 +0200)]
Merge branch 'fix/hda' into for-linus

14 years agoALSA: hda - Add support for Lenovo S10-3t
Jerone Young [Mon, 23 Aug 2010 06:34:36 +0000 (08:34 +0200)]
ALSA: hda - Add support for Lenovo S10-3t

This patch adds quirk for the Lenovo S10-3t so the headphone &
microphone jacks will now work.

Signed-off-by: Jerone Young <jerone.young@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoisdn/avm: fix build when PCMCIA is not enabled
Randy Dunlap [Thu, 19 Aug 2010 07:07:23 +0000 (07:07 +0000)]
isdn/avm: fix build when PCMCIA is not enabled

Why wouldn't kconfig symbol ISDN_DRV_AVMB1_B1PCMCIA also depend on
PCMCIA?

Fix build for PCMCIA not enabled:

ERROR: "b1_free_card" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1ctl_proc_fops" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_reset_ctr" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_load_firmware" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_send_message" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_release_appl" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_register_appl" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_getrevision" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_detect" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_interrupt" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!
ERROR: "b1_alloc_card" [drivers/isdn/hardware/avm/b1pcmcia.ko] undefined!

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Carsten Paeth <calle@calle.de>
Cc: Karsten Keil <isdn@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoheader: fix broken headers for user space
Changli Gao [Sun, 22 Aug 2010 17:25:05 +0000 (17:25 +0000)]
header: fix broken headers for user space

__packed is only defined in kernel space, so we should use
__attribute__((packed)) for the code shared between kernel and user space.

Two __attribute() annotations are replaced with __attribute__() too.

Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agoMerge branch 'radix-tree' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev
Linus Torvalds [Mon, 23 Aug 2010 02:55:14 +0000 (19:55 -0700)]
Merge branch 'radix-tree' of git://git./linux/kernel/git/dgc/xfsdev

* 'radix-tree' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/xfsdev:
  radix-tree: radix_tree_range_tag_if_tagged() can set incorrect tags
  radix-tree: clear all tags in radix_tree_node_rcu_free

14 years agoLinux 2.6.36-rc2
Linus Torvalds [Mon, 23 Aug 2010 00:43:29 +0000 (17:43 -0700)]
Linux 2.6.36-rc2

14 years agoradix-tree: radix_tree_range_tag_if_tagged() can set incorrect tags
Dave Chinner [Mon, 23 Aug 2010 00:33:53 +0000 (10:33 +1000)]
radix-tree: radix_tree_range_tag_if_tagged() can set incorrect tags

Commit ebf8aa44beed48cd17893a83d92a4403e5f9d9e2 ("radix-tree:
omplement function radix_tree_range_tag_if_tagged") does not safely
set tags on on intermediate tree nodes. The code walks down the tree
setting tags before it has fully resolved the path to the leaf under
the assumption there will be a leaf slot with the tag set in the
range it is searching.

Unfortunately, this is not a valid assumption - we can abort after
setting a tag on an intermediate node if we overrun the number of
tags we are allowed to set in a batch, or stop scanning because we
we have passed the last scan index before we reach a leaf slot with
the tag we are searching for set.

As a result, we can leave the function with tags set on intemediate
nodes which can be tripped over later by tag-based lookups. The
result of these stale tags is that lookup may end prematurely or
livelock because the lookup cannot make progress.

The fix for the problem involves reocrding the traversal path we
take to the leaf nodes, and only propagating the tags back up the
tree once the tag is set in the leaf node slot. We are already
recording the path for efficient traversal, so there is no
additional overhead to do the intermediately node tag setting in
this manner.

This fixes a radix tree lookup livelock triggered by the new
writeback sync livelock avoidance code introduced in commit
f446daaea9d4a420d16c606f755f3689dcb2d0ce ("mm: implement writeback
livelock avoidance using page tagging").

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Acked-by: Jan Kara <jack@suse.cz>
14 years agoradix-tree: clear all tags in radix_tree_node_rcu_free
Dave Chinner [Mon, 23 Aug 2010 00:33:19 +0000 (10:33 +1000)]
radix-tree: clear all tags in radix_tree_node_rcu_free

Commit f446daaea9d4a420d16c606f755f3689dcb2d0ce ("mm: implement
writeback livelock avoidance using page tagging") introduced a new
radix tree tag, increasing the number of tags in each node from 2 to
3. It did not, however, fix up the code in
radix_tree_node_rcu_free() that cleans up after radix_tree_shrink()
and hence could leave stray tags set in the new tag array.

The result is that the livelock avoidance code added in the the
above commit would hit stale tags when doing tag based lookups,
resulting in livelocks when trying to traverse the tree.

Fix this problem in radix_tree_node_rcu_free() so it doesn't happen
again in the future by using a loop to walk all the tags up to
RADIX_TREE_MAX_TAGS to clear the stray tags radix_tree_shrink()
leaves behind.

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Acked-by: Nick Piggin <npiggin@kernel.dk>
Acked-by: Jan Kara <jack@suse.cz>
14 years agoMerge remote branch 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next into drm-core...
Dave Airlie [Sun, 22 Aug 2010 22:34:59 +0000 (08:34 +1000)]
Merge remote branch 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next into drm-core-next

* 'nouveau/for-airlied' of /ssd/git/drm-nouveau-next:
  drm/nouveau: fix earlier mistake when fixing merge conflict
  drm/nvc0: fix thinko in instmem suspend/resume
  drm/nouveau: Workaround missing GPIO tables on an Apple iMac G4 NV18.
  drm/nouveau: Add TV-out quirk for an MSI nForce2 IGP.
  drm/nv50-nvc0: ramht_size is meant to be in bytes, not entries
  drm/nouveau: punt some more log messages to debug level
  drm/nouveau: remove warning about unknown tmds table revisions
  drm/nouveau: check for error when allocating/mapping dummy page
  drm/nouveau: fix race condition when under memory pressure
  drm/nv50: fix minor thinko from nvc0 changes
  drm/nouveau: Don't try DDC on the dummy I2C channel.

14 years agodrm/radeon/kms: fix typo in radeon_compute_pll_gain
Alex Deucher [Tue, 17 Aug 2010 04:35:45 +0000 (00:35 -0400)]
drm/radeon/kms: fix typo in radeon_compute_pll_gain

Looks like this got copied from the ddx wrong.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: try to detect tv vs monitor for underscan
Alex Deucher [Fri, 20 Aug 2010 15:57:19 +0000 (11:57 -0400)]
drm/radeon/kms: try to detect tv vs monitor for underscan

When enabling underscan for hdmi monitors, attempt to detect
whether we are driving a TV or a monitor.  The should hopefully
prevent underscan from being enabled on monitors attached via
hdmi that do not overscan the image.  Only enable underscan
if the mode is a common hdtv mode (480p, 720p, etc.).

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: fix sideport detection on newer rs880 boards
Alex Deucher [Fri, 20 Aug 2010 16:47:54 +0000 (12:47 -0400)]
drm/radeon/kms: fix sideport detection on newer rs880 boards

The meaning of ucMemoryType changed on recent boards, however,
ulBootUpSidePortClock should be set properly across all boards.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon: fix passing wrong type to gem object create.
Dave Airlie [Sun, 22 Aug 2010 22:27:47 +0000 (08:27 +1000)]
drm/radeon: fix passing wrong type to gem object create.

We are passing a ttm type when we want to pass true/false.

Reported-by: Dr. David Alan Gilbert <linux@treblig.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoMerge branch 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 22 Aug 2010 18:27:36 +0000 (11:27 -0700)]
Merge branch 'kvm-updates/2.6.36' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.36' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PIT: free irq source id in handling error path
  KVM: destroy workqueue on kvm_create_pit() failures
  KVM: fix poison overwritten caused by using wrong xstate size

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt...
Linus Torvalds [Sun, 22 Aug 2010 18:03:27 +0000 (11:03 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/anholt/drm-intel

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: (58 commits)
  drm/i915,intel_agp: Add support for Sandybridge D0
  drm/i915: fix render pipe control notify on sandybridge
  agp/intel: set 40-bit dma mask on Sandybridge
  drm/i915: Remove the conflicting BUG_ON()
  drm/i915/suspend: s/IS_IRONLAKE/HAS_PCH_SPLIT/
  drm/i915/suspend: Flush register writes before busy-waiting.
  i915: disable DAC on Ironlake also when doing CRT load detection.
  drm/i915: wait for actual vblank, not just 20ms
  drm/i915: make sure eDP PLL is enabled at the right time
  drm/i915: fix VGA plane disable for Ironlake+
  drm/i915: eDP mode set sequence corrections
  drm/i915: add panel reset workaround
  drm/i915: Enable RC6 on Ironlake.
  drm/i915/sdvo: Only set is_lvds if we have a valid fixed mode.
  drm/i915: Set up a render context on Ironlake
  drm/i915 invalidate indirect state pointers at end of ring exec
  drm/i915: Wake-up wait_request() from elapsed hang-check (v2)
  drm/i915: Apply i830 errata for cursor alignment
  drm/i915: Only update i845/i865 CURBASE when disabled (v2)
  drm/i915: FBC is updated within set_base() so remove second call in mode_set()
  ...

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg...
Linus Torvalds [Sun, 22 Aug 2010 17:08:52 +0000 (10:08 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/penberg/slab-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6:
  slab: fix object alignment
  slub: add missing __percpu markup in mm/slub_def.h

14 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke...
Linus Torvalds [Sun, 22 Aug 2010 16:44:47 +0000 (09:44 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2:
  nilfs2: wait for discard to finish

14 years agodrm/i915,intel_agp: Add support for Sandybridge D0
Zhenyu Wang [Thu, 19 Aug 2010 01:46:16 +0000 (09:46 +0800)]
drm/i915,intel_agp: Add support for Sandybridge D0

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agodrm/i915: fix render pipe control notify on sandybridge
Zhenyu Wang [Thu, 19 Aug 2010 01:46:15 +0000 (09:46 +0800)]
drm/i915: fix render pipe control notify on sandybridge

This one is missed in last pipe control fix for sandybridge,
that really unmask interrupt bit for notify in render engine IMR.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agoagp/intel: set 40-bit dma mask on Sandybridge
Zhenyu Wang [Thu, 19 Aug 2010 01:46:13 +0000 (09:46 +0800)]
agp/intel: set 40-bit dma mask on Sandybridge

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agodrm/i915: Remove the conflicting BUG_ON()
Chris Wilson [Sun, 15 Aug 2010 09:52:34 +0000 (10:52 +0100)]
drm/i915: Remove the conflicting BUG_ON()

We now attempt to free "active" objects following a GPU hang as either
the GPU will be reset or the hang is permenant. In either case, the GPU
writes will not be flushed to main memory and it should be safe to
return that memory back to the system.

The BUG_ON(active) is thus overkill and can erroneously fire after a
EIO.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agodrm/i915/suspend: s/IS_IRONLAKE/HAS_PCH_SPLIT/
Chris Wilson [Sat, 14 Aug 2010 13:41:23 +0000 (14:41 +0100)]
drm/i915/suspend: s/IS_IRONLAKE/HAS_PCH_SPLIT/

For the shared paths on the next generation chipsets.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agodrm/i915/suspend: Flush register writes before busy-waiting.
Chris Wilson [Sat, 14 Aug 2010 13:41:22 +0000 (14:41 +0100)]
drm/i915/suspend: Flush register writes before busy-waiting.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agoi915: disable DAC on Ironlake also when doing CRT load detection.
Dave Airlie [Wed, 4 Aug 2010 05:52:19 +0000 (15:52 +1000)]
i915: disable DAC on Ironlake also when doing CRT load detection.

Like on Sandybridge, disabling the DAC here when doing CRT load detect
avoids forever hangs waiting on the hardware.

test procedure on HP 2740p:
boot with no VGA plugged in, start X,
plug in VGA monitor (1280x1024)
chvt 3
machine hangs waiting forever.

Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agodrm/i915: wait for actual vblank, not just 20ms
Jesse Barnes [Wed, 18 Aug 2010 20:20:54 +0000 (13:20 -0700)]
drm/i915: wait for actual vblank, not just 20ms

Waiting for a hard coded 20ms isn't always enough to make sure a vblank
period has actually occurred, so add code to make sure we really have
passed through a vblank period (or that the pipe is off when disabling).

This prevents problems with mode setting and link training, and seems to
fix a bug like https://bugs.freedesktop.org/show_bug.cgi?id=29278, but
on an HP 8440p instead.  Hopefully also fixes
https://bugs.freedesktop.org/show_bug.cgi?id=29141.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
14 years agoworkqueue: Add basic tracepoints to track workqueue execution
Arjan van de Ven [Sat, 21 Aug 2010 20:07:26 +0000 (13:07 -0700)]
workqueue: Add basic tracepoints to track workqueue execution

With the introduction of the new unified work queue thread pools,
we lost one feature: It's no longer possible to know which worker
is causing the CPU to wake out of idle. The result is that PowerTOP
now reports a lot of "kworker/a:b" instead of more readable results.

This patch adds a pair of tracepoints to the new workqueue code,
similar in style to the timer/hrtimer tracepoints.

With this pair of tracepoints, the next PowerTOP can correctly
report which work item caused the wakeup (and how long it took):

Interrupt (43)            i915      time   3.51ms    wakeups 141
Work      ieee80211_iface_work      time   0.81ms    wakeups  29
Work              do_dbs_timer      time   0.55ms    wakeups  24
Process                   Xorg      time  21.36ms    wakeups   4
Timer    sched_rt_period_timer      time   0.01ms    wakeups   1

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMerge git://git.infradead.org/mtd-2.6
Linus Torvalds [Sat, 21 Aug 2010 19:47:05 +0000 (12:47 -0700)]
Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6:
  mtd: nand: Fix probe of Samsung NAND chips
  mtd: nand: Fix regression in BBM detection
  pxa3xx: fix ns2cycle equation

14 years agoReplace Configure with Enable in description of MAXSMP
Samuel Thibault [Sat, 21 Aug 2010 19:32:41 +0000 (21:32 +0200)]
Replace Configure with Enable in description of MAXSMP

The "Configure" word tends to make user believe they have to say 'yes'
to be able to choose the number of procs/nodes.  "Enable" should be
unambiguous enough.

Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm: make stack guard page logic use vm_prev pointer
Linus Torvalds [Fri, 20 Aug 2010 23:49:40 +0000 (16:49 -0700)]
mm: make stack guard page logic use vm_prev pointer

Like the mlock() change previously, this makes the stack guard check
code use vma->vm_prev to see what the mapping below the current stack
is, rather than have to look it up with find_vma().

Also, accept an abutting stack segment, since that happens naturally if
you split the stack with mlock or mprotect.

Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm: make the mlock() stack guard page checks stricter
Linus Torvalds [Fri, 20 Aug 2010 23:39:25 +0000 (16:39 -0700)]
mm: make the mlock() stack guard page checks stricter

If we've split the stack vma, only the lowest one has the guard page.
Now that we have a doubly linked list of vma's, checking this is trivial.

Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomm: make the vma list be doubly linked
Linus Torvalds [Fri, 20 Aug 2010 23:24:55 +0000 (16:24 -0700)]
mm: make the vma list be doubly linked

It's a really simple list, and several of the users want to go backwards
in it to find the previous vma.  So rather than have to look up the
previous entry with 'find_vma_prev()' or something similar, just make it
doubly linked instead.

Tested-by: Ian Campbell <ijc@hellion.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agosetlocalversion: Ignote SCMs above the linux source tree
Michal Marek [Mon, 16 Aug 2010 15:09:52 +0000 (17:09 +0200)]
setlocalversion: Ignote SCMs above the linux source tree

Dan McGee <dpmcgee@gmail.com> writes:
> Note that when in git, you get the appended "+" sign. If
> LOCALVERSION_AUTO is set, you will get something like
> "eee-gb01b08c-dirty" (whereas the copy of the tree in /tmp still
> returns "eee"). It doesn't matter whether the working tree is dirty or
> clean.
>
> Is there a way to disable this? I'm building from a clean tarball that
> just happens to be unpacked inside a git repository. One would think
> setting LOCALVERSION_AUTO to false would do it, but no such luck...

Fix this by checking if the kernel source tree is the root of the git or
hg repository. No fix for svn: If the kernel source is not tracked in
the svn repository, it works as expected, otherwise determining the
'repository root' is not really a defined task.

Reported-and-tested-by: Dan McGee <dpmcgee@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
14 years agomtd: nand: Fix probe of Samsung NAND chips
Tilman Sauerbeck [Fri, 20 Aug 2010 21:01:47 +0000 (14:01 -0700)]
mtd: nand: Fix probe of Samsung NAND chips

Apparently, the check for a 6-byte ID string introduced by commit
426c457a3216fac74e3d44dd39729b0689f4c7ab ("mtd: nand: extend NAND flash
detection to new MLC chips") is NOT sufficient to determine whether or
not a Samsung chip uses their new MLC detection scheme or the old,
standard scheme. This adds a condition to check cell type.

Signed-off-by: Tilman Sauerbeck <tilman@code-monkey.de>
Signed-off-by: Brian Norris <norris@broadcom.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
14 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 20 Aug 2010 21:25:08 +0000 (14:25 -0700)]
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:
  x86, apic: Fix apic=debug boot crash
  x86, hotplug: Serialize CPU hotplug to avoid bringup concurrency issues
  x86-32: Fix dummy trampoline-related inline stubs
  x86-32: Separate 1:1 pagetables from swapper_pg_dir
  x86, cpu: Fix regression in AMD errata checking code

14 years agoDocumentation: fix ozlabs.org mailing list address
Stephen Rothwell [Fri, 20 Aug 2010 09:56:31 +0000 (19:56 +1000)]
Documentation: fix ozlabs.org mailing list address

This list moved to lists.ozlabs.org quite some time ago.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoMAINTAINERS: Fix ozlabs.org mailing list addresses
Stephen Rothwell [Fri, 20 Aug 2010 09:52:45 +0000 (19:52 +1000)]
MAINTAINERS: Fix ozlabs.org mailing list addresses

All these lists moved to lists.ozlabs.org quite a while ago.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agoDocumentation: kernel-locking: mutex_trylock cannot be used in interrupt context
Stefan Richter [Thu, 19 Aug 2010 21:13:43 +0000 (14:13 -0700)]
Documentation: kernel-locking: mutex_trylock cannot be used in interrupt context

Chapter 6 is right about mutex_trylock, but chapter 10 wasn't.  This error
was introduced during semaphore-to-mutex conversion of the Unreliable
guide.  :-)

If user context which performs mutex_lock() or mutex_trylock() is
preempted by interrupt context which performs mutex_trylock() on the same
mutex instance, a deadlock occurs.  This is because these functions do not
disable local IRQs when they operate on mutex->wait_lock.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/scsi/qla4xxx: fix build
Andrew Morton [Thu, 19 Aug 2010 21:13:42 +0000 (14:13 -0700)]
drivers/scsi/qla4xxx: fix build

gcc-4.0.2:

  drivers/scsi/qla4xxx/ql4_os.c: In function 'qla4_8xxx_error_recovery':
  drivers/scsi/qla4xxx/ql4_glbl.h:135: sorry, unimplemented: inlining failed in call to 'qla4_8xxx_set_drv_active': function body not available
  drivers/scsi/qla4xxx/ql4_os.c:2377: sorry, unimplemented: called from here
  drivers/scsi/qla4xxx/ql4_glbl.h:135: sorry, unimplemented: inlining failed in call to 'qla4_8xxx_set_drv_active': function body not available
  drivers/scsi/qla4xxx/ql4_os.c:2393: sorry, unimplemented: called from here

Cc: Ravi Anand <ravi.anand@qlogic.com>
Cc: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agouml: fix compile error in dma_get_cache_alignment()
Miklos Szeredi [Thu, 19 Aug 2010 21:13:40 +0000 (14:13 -0700)]
uml: fix compile error in dma_get_cache_alignment()

Fix uml compile error:

  include/linux/dma-mapping.h:145: error: redefinition of 'dma_get_cache_alignment'
  arch/um/include/asm/dma-mapping.h:99: note: previous definition of 'dma_get_cache_alignment' was here

Introduced by commit 4565f0170dfc ("dma-mapping: unify
dma_get_cache_alignment implementations")

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agooom: __task_cred() need rcu_read_lock()
KOSAKI Motohiro [Thu, 19 Aug 2010 21:13:39 +0000 (14:13 -0700)]
oom: __task_cred() need rcu_read_lock()

dump_tasks() needs to hold the RCU read lock around its access of the
target task's UID.  To this end it should use task_uid() as it only needs
that one thing from the creds.

The fact that dump_tasks() holds tasklist_lock is insufficient to prevent the
target process replacing its credentials on another CPU.

Then, this patch change to call rcu_read_lock() explicitly.

===================================================
[ INFO: suspicious rcu_dereference_check() usage. ]
---------------------------------------------------
mm/oom_kill.c:410 invoked rcu_dereference_check() without protection!

other info that might help us debug this:

rcu_scheduler_active = 1, debug_locks = 1
4 locks held by kworker/1:2/651:
 #0:  (events){+.+.+.}, at: [<ffffffff8106aae7>]
process_one_work+0x137/0x4a0
 #1:  (moom_work){+.+...}, at: [<ffffffff8106aae7>]
process_one_work+0x137/0x4a0
 #2:  (tasklist_lock){.+.+..}, at: [<ffffffff810fafd4>]
out_of_memory+0x164/0x3f0
 #3:  (&(&p->alloc_lock)->rlock){+.+...}, at: [<ffffffff810fa48e>]
find_lock_task_mm+0x2e/0x70

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agooom: fix tasklist_lock leak
KOSAKI Motohiro [Thu, 19 Aug 2010 21:13:39 +0000 (14:13 -0700)]
oom: fix tasklist_lock leak

Commit 0aad4b3124 ("oom: fold __out_of_memory into out_of_memory")
introduced a tasklist_lock leak.  Then it caused following obvious
danger warnings and panic.

    ================================================
    [ BUG: lock held when returning to user space! ]
    ------------------------------------------------
    rsyslogd/1422 is leaving the kernel with locks still held!
    1 lock held by rsyslogd/1422:
     #0:  (tasklist_lock){.+.+.+}, at: [<ffffffff810faf64>] out_of_memory+0x164/0x3f0
    BUG: scheduling while atomic: rsyslogd/1422/0x00000002
    INFO: lockdep is turned off.

This patch fixes it.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agooom: fix NULL pointer dereference
KOSAKI Motohiro [Thu, 19 Aug 2010 21:13:38 +0000 (14:13 -0700)]
oom: fix NULL pointer dereference

Commit b940fd7035 ("oom: remove unnecessary code and cleanup") added an
unnecessary NULL pointer dereference.  remove it.

Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agodrivers/mmc/host/sdhci-s3c.c: use the correct mutex and card detect function
Kyungmin Park [Thu, 19 Aug 2010 21:13:37 +0000 (14:13 -0700)]
drivers/mmc/host/sdhci-s3c.c: use the correct mutex and card detect function

There's some merge problem between sdhic core and sdhci-s3c host.  After
mutex is changed to spinlock.  It needs to use use spin lock functions and
use the correct card detection function.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agosdhci: add no hi-speed bit quirk support
Kyungmin Park [Thu, 19 Aug 2010 21:13:35 +0000 (14:13 -0700)]
sdhci: add no hi-speed bit quirk support

Some SDHCI controllers like s5pc110 don't have an HISPD bit in the HOSTCTL
register.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agos5pc110: SDHCI-s3c support on s5pc110
Kyungmin Park [Thu, 19 Aug 2010 21:13:35 +0000 (14:13 -0700)]
s5pc110: SDHCI-s3c support on s5pc110

s5pc110 (aka s5pv210) uses the same SDHCI IP.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agos5pc110: SDHCI-s3c can override host capabilities
Kyungmin Park [Thu, 19 Aug 2010 21:13:34 +0000 (14:13 -0700)]
s5pc110: SDHCI-s3c can override host capabilities

Each board can override the default sdhci host capabilities.
Some board has broken features by hardwares and support 8-bit bandwidth.

Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Cc: <linux-mmc@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agolib/radix-tree.c: fix overflow in radix_tree_range_tag_if_tagged()
Jan Kara [Thu, 19 Aug 2010 21:13:33 +0000 (14:13 -0700)]
lib/radix-tree.c: fix overflow in radix_tree_range_tag_if_tagged()

When radix_tree_maxindex() is ~0UL, it can happen that scanning overflows
index and tree traversal code goes astray reading memory until it hits
unreadable memory.  Check for overflow and exit in that case.

Signed-off-by: Jan Kara <jack@suse.cz>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agorevert "hwmon: f71882fg: add support for the Fintek F71808E"
Andrew Morton [Thu, 19 Aug 2010 21:13:31 +0000 (14:13 -0700)]
revert "hwmon: f71882fg: add support for the Fintek F71808E"

Revert commit 7721fea3d0fd93fb4d000eb737b444369358d6d3 ("hwmon:
f71882fg: add support for the Fintek F71808E").

Hans said:

: A second review after I've received a data sheet for this device from
: Fintek has turned up a few bugs.
:
: Unfortunately Giel (nor I) have time to fix this in time for the 2.6.36
: cycle.  Therefor I would like to see this patch reverted as not having any
: support for the hwmon function of this superio chip is better then having
: unreliable support.

Cc: Giel van Schijndel <me@mortis.eu>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: add explicit error checking in all the examples
Andrea Righi [Thu, 19 Aug 2010 21:13:30 +0000 (14:13 -0700)]
kfifo: add explicit error checking in all the examples

Provide a check in all the kfifo examples to validate the correct
execution of each testcase.

Signed-off-by: Andrea Righi <arighi@develer.com>
Acked-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: fix a memory leak in dma example
Andrea Righi [Thu, 19 Aug 2010 21:13:30 +0000 (14:13 -0700)]
kfifo: fix a memory leak in dma example

We use a dynamically allocated kfifo in the dma example, so we need to
free it when unloading the module.

Signed-off-by: Andrea Righi <arighi@develer.com>
Acked-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: fix kernel BUG in dma example
Andrea Righi [Thu, 19 Aug 2010 21:13:29 +0000 (14:13 -0700)]
kfifo: fix kernel BUG in dma example

The scatterlist is used uninitialized in kfifo_dma_in_prepare().  This
triggers the following bug if CONFIG_DEBUG_SG=y:

  ------------[ cut here ]------------
  kernel BUG at include/linux/scatterlist.h:65!
  invalid opcode: 0000 [#1] PREEMPT SMP
  ...
  Call Trace:
   [<ffffffff810a1eab>] setup_sgl+0x6b/0xe0
   [<ffffffffa03d7000>] ? example_init+0x0/0x265 [dma_example]
   [<ffffffff810a2021>] __kfifo_dma_in_prepare+0x21/0x30
   [<ffffffffa03d7124>] example_init+0x124/0x265 [dma_example]
   [<ffffffff810f9c55>] ? trace_module_notify+0x25/0x370
   [<ffffffff81110c6e>] ? free_pages_prepare+0x11e/0x1e0
   [<ffffffff8106f2b1>] ? get_parent_ip+0x11/0x50
   [<ffffffff810f9c55>] ? trace_module_notify+0x25/0x370
   [<ffffffff810b65fd>] ? trace_hardirqs_on+0xd/0x10
   [<ffffffff814beade>] ? mutex_unlock+0xe/0x10
   [<ffffffff810f9c71>] ? trace_module_notify+0x41/0x370
   [<ffffffff810a77d5>] ? __blocking_notifier_call_chain+0x45/0x80
   [<ffffffff81137b7a>] ? vfree+0x2a/0x30
   [<ffffffff810a6ac3>] ? up_read+0x23/0x40
   [<ffffffff810a77f5>] ? __blocking_notifier_call_chain+0x65/0x80
   [<ffffffff810001e3>] do_one_initcall+0x43/0x180
   [<ffffffff810c577a>] sys_init_module+0xba/0x200
   [<ffffffff8103819b>] system_call_fastpath+0x16/0x1b
  RIP  [<ffffffff810a1e31>] setup_sgl_buf+0x1a1/0x1b0
   RSP <ffff88006720dc98>
  ---[ end trace a72b979fd3c1d3a5 ]---

Add the proper initialization to avoid the bug.

Signed-off-by: Andrea Righi <arighi@develer.com>
Acked-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: add explicit error checking in byte stream example
Andrea Righi [Thu, 19 Aug 2010 21:13:29 +0000 (14:13 -0700)]
kfifo: add explicit error checking in byte stream example

Provide a static array of expected items that kfifo should contain at the
end of the test to validate it.

Signed-off-by: Andrea Righi <arighi@develer.com>
Cc: Stefani Seibold <stefani@seibold.net>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: add kfifo_skip() testcase
Andrea Righi [Thu, 19 Aug 2010 21:13:28 +0000 (14:13 -0700)]
kfifo: add kfifo_skip() testcase

Add a testcase for kfifo_skip() to the byte stream fifo example.

Signed-off-by: Andrea Righi <arighi@develer.com>
Cc: Greg KH <greg@kroah.com>
Acked-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agokfifo: implement missing __kfifo_skip_r()
Andrea Righi [Thu, 19 Aug 2010 21:13:27 +0000 (14:13 -0700)]
kfifo: implement missing __kfifo_skip_r()

kfifo_skip() is currently broken, due to the missing of the internal
helper function.  Add it.

Signed-off-by: Andrea Righi <arighi@develer.com>
Cc: Greg KH <greg@kroah.com>
Acked-by: Stefani Seibold <stefani@seibold.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomatroxfb: fix incorrect use of memcpy_toio()
Ondrej Zary [Thu, 19 Aug 2010 21:13:25 +0000 (14:13 -0700)]
matroxfb: fix incorrect use of memcpy_toio()

Screen is completely corrupted since 2.6.34.  Bisection revealed that it's
caused by commit 6175ddf06b61720 ("x86: Clean up mem*io functions.").

H.  Peter Anvin explained that memcpy_toio() does not copy data in 32bit
chunks anymore on x86.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Petr Vandrovec <vandrove@vc.cvut.cz>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: <stable@kernel.org> [2.6.34.x, 2.6.35.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
14 years agomakefile: not need to regenerate kernel.release file when make kernelrelease
Amerigo Wang [Fri, 20 Aug 2010 09:36:06 +0000 (05:36 -0400)]
makefile: not need to regenerate kernel.release file when make kernelrelease

Brice reported that 'kernelrelease' has a dependence on include/config/kernel.release,
causes this file to be regenerated every time when invoke it. It doesn't have to.

Reported-by: Brice Goglin <Brice.Goglin@inria.fr>
Tested-by: Brice Goglin <Brice.Goglin@inria.fr>
Signed-off-by: WANG Cong <amwang@redhat.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
14 years agoMerge commit 'v2.6.36-rc1' into kbuild/rc-fixes
Michal Marek [Fri, 20 Aug 2010 11:53:08 +0000 (13:53 +0200)]
Merge commit 'v2.6.36-rc1' into kbuild/rc-fixes

14 years agox86, apic: Fix apic=debug boot crash
Daniel Kiper [Thu, 19 Aug 2010 22:46:16 +0000 (00:46 +0200)]
x86, apic: Fix apic=debug boot crash

Fix a boot crash when apic=debug is used and the APIC is
not properly initialized.

This issue appears during Xen Dom0 kernel boot but the
fix is generic and the crash could occur on real hardware
as well.

Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
Cc: xen-devel@lists.xensource.com
Cc: konrad.wilk@oracle.com
Cc: jeremy@goop.org
Cc: <stable@kernel.org> # .35.x, .34.x, .33.x, .32.x
LKML-Reference: <20100819224616.GB9967@router-fw-old.local.net-space.pl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
14 years agoALSA: hda - Fix stream and channel-ids codec-bus wide
Takashi Iwai [Fri, 20 Aug 2010 07:44:36 +0000 (09:44 +0200)]
ALSA: hda - Fix stream and channel-ids codec-bus wide

The new sticky PCM parameter introduced the delayed clean-ups of
stream- and channel-id tags.  In the current implementation, this check
(adding dirty flag) and actual clean-ups are done only for the codec
chip.  However, with HD-audio architecture, multiple codecs can be
on a single bus, and the controller assign stream- and channel-ids in
the bus-wide.

In this patch, the stream-id and channel-id are checked over all codecs
connected to the corresponding bus.  Together with it, the mutex is
moved to struct hda_bus, as this becomes also bus-wide.

Reported-and-tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agoALSA: hda - Fix conflict of sticky PCM parameter in HDMI codecs
Takashi Iwai [Fri, 20 Aug 2010 07:41:59 +0000 (09:41 +0200)]
ALSA: hda - Fix conflict of sticky PCM parameter in HDMI codecs

Intel and Nvidia HDMI codec drivers have own implementations of
sticky PCM parameters.  Now HD-audio core part already has it,
thus both setups conflict.  The fix is simply remove the part in
patch_intelhdmi.c and patch_nvhdmi.c and simply call
snd_hda_codec_setup_stream() as usual.

Reported-and-tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
14 years agodrm/radeon/kms: set encoder type to DVI for HDMI on evergreen
Alex Deucher [Fri, 20 Aug 2010 05:09:22 +0000 (01:09 -0400)]
drm/radeon/kms: set encoder type to DVI for HDMI on evergreen

Fixes the pink line that shows up with some hdmi monitors.  This
will need to be revisited when audio support is added.

Fixes:
http://bugs.freedesktop.org/show_bug.cgi?id=27452

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
David S. Miller [Thu, 19 Aug 2010 23:54:13 +0000 (16:54 -0700)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless-2.6

14 years agodrm/radeon/kms: add back missing break in info ioctl
Alex Deucher [Thu, 12 Aug 2010 12:25:47 +0000 (08:25 -0400)]
drm/radeon/kms: add back missing break in info ioctl

This seems to have gotten lost in the hyper-z merge.

Noticed by legume on IRC.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: don't enable MSIs on AGP boards
Alex Deucher [Thu, 12 Aug 2010 22:05:34 +0000 (18:05 -0400)]
drm/radeon/kms: don't enable MSIs on AGP boards

Fixes:
https://bugs.freedesktop.org/show_bug.cgi?id=29327

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agodrm/radeon/kms: fix agp mode setup on cards that use pcie bridges
Alex Deucher [Wed, 18 Aug 2010 17:34:11 +0000 (13:34 -0400)]
drm/radeon/kms: fix agp mode setup on cards that use pcie bridges

Asics that use an AGP to PCIE bridge don't have the AGP_STATUS
register so just use whatever mode the host side setup.

Signed-off-by: Alex Deucher <alexdeucher@gmail.com>
Cc: Jerome Glisse <glisse@freedesktop.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>
14 years agoe1000e: don't check for alternate MAC addr on parts that don't support it
Bruce Allan [Thu, 19 Aug 2010 22:48:52 +0000 (15:48 -0700)]
e1000e: don't check for alternate MAC addr on parts that don't support it

From: Bruce Allan <bruce.w.allan@intel.com>

The alternate MAC address feature is only supported by 80003ES2LAN and
82571 LOMs as well as a couple 82571 mezzanine cards.  Checking for an
alternate MAC address on other parts can fail leading to the driver not
able to load.  This patch limits the check for an alternate MAC address
to be done only for parts that support the feature.

This issue has been around since support for the feature was introduced
to the e1000e driver in 2.6.34.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Reported-by: Fabio Varesano <fax8@users.sourceforge.net>
Cc: stable@kernel.org
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
14 years agodrm: move dereference below check
Dan Carpenter [Thu, 19 Aug 2010 09:46:29 +0000 (11:46 +0200)]
drm: move dereference below check

"fb_helper_conn" is dereferenced before the check for NULL.  It's never
actually NULL here, so this is mostly to keep the static checkers happy.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>