8 years agomemblock: Add __memblock_dump_all()
Tejun Heo [Thu, 8 Dec 2011 18:22:06 +0000]
memblock: Add __memblock_dump_all()

Add __memblock_dump_all() which dumps memblock configuration whether
memblock_debug is enabled or not.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>

8 years agomemblock: Use memblock_reserve() in memblock internal functions
Tejun Heo [Thu, 8 Dec 2011 18:22:06 +0000]
memblock: Use memblock_reserve() in memblock internal functions

Make memblock_double_array(), __memblock_alloc_base() and
memblock_alloc_nid() use memblock_reserve() instead of calling
memblock_add_region() with reserved array directly.  This eases
debugging and updates to memblock_add_region().

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>

8 years agomemblock: Make memblock_{add|remove|free|reserve}() return int and update prototypes
Tejun Heo [Thu, 8 Dec 2011 18:22:06 +0000]
memblock: Make memblock_{add|remove|free|reserve}() return int and update prototypes

memblock_{add|remove|free|reserve}() return either 0 or -errno but had
long as return type.  Chage it to int.  Also, drop 'extern' from all
prototypes in memblock.h - they are unnecessary and used
inconsistently (especially if mm.h is included in the picture).

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Yinghai Lu <yinghai@kernel.org>

8 years agomemblock: Fix include breakages caused by 24aa07882b
Tejun Heo [Thu, 8 Dec 2011 18:22:06 +0000]
memblock: Fix include breakages caused by 24aa07882b

24aa07882b (memblock, x86: Replace memblock_x86_reserve/free_range()
with generic ones) removed arch/x86/include/asm/memblock.h and dropped
its inclusion from include/linux/memblock.h which breaks other
architectures which depended on the generic memblock.h pulling in the
arch specific one.

However, the proper fix isn't adding back the asm inclusion.  memblock
doesn't have any arch dependent part and doesn't need arch specific
header file and asm/memblock.h files are either practically empty or
contain mostly unrelated arch specific stuff.

* In microblaze, sh, powerpc, sparc and openrisc, asm/memblock.h is
  either empty or just contains unused MEMBLOCK_DBG() macro.  Remove

* In arm and unicore32, asm/memblock.h contains arch specific stuff.
  Include it directly from its users.  It might be a good idea to
  rename the header file to avoid confusion.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: "H. Peter Anvin" <hpa@zytor.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Guan Xuetao <gxt@mprc.pku.edu.cn>

8 years agoMerge branch 'master' into x86/memblock
Tejun Heo [Mon, 28 Nov 2011 17:46:22 +0000]
Merge branch 'master' into x86/memblock

Conflicts & resolutions:

* arch/x86/xen/setup.c

dc91c728fd "xen: allow extra memory to be in multiple regions"
24aa07882b "memblock, x86: Replace memblock_x86_reserve/free..."

conflicted on xen_add_extra_mem() updates.  The resolution is
trivial as the latter just want to replace
memblock_x86_reserve_range() with memblock_reserve().

* drivers/pci/intel-iommu.c

166e9278a3f "x86/ia64: intel-iommu: move to drivers/iommu/"
5dfe8660a3d "bootmem: Replace work_with_active_regions() with..."

conflicted as the former moved the file under drivers/iommu/.
Resolved by applying the chnages from the latter on the moved

* mm/Kconfig

6661672053a "memblock: add NO_BOOTMEM config symbol"
c378ddd53f9 "memblock, x86: Make ARCH_DISCARD_MEMBLOCK a config option"

conflicted trivially.  Both added config options.  Just
letting both add their own options resolves the conflict.

* mm/memblock.c

d1f0ece6cdc "mm/memblock.c: small function definition fixes"
ed7b56a799c "memblock: Remove memblock_memory_can_coalesce()"

confliected.  The former updates function removed by the
latter.  Resolution is trivial.

Signed-off-by: Tejun Heo <tj@kernel.org>

8 years agoMerge branch 'fbdev-for-linus' of git://github.com/schandinat/linux-2.6
Linus Torvalds [Sun, 27 Nov 2011 20:05:56 +0000]
Merge branch 'fbdev-for-linus' of git://github.com/schandinat/linux-2.6

* 'fbdev-for-linus' of git://github.com/schandinat/linux-2.6:
  viafb: correct sync polarity for OLPC DCON
  video:da8xx-fb: Disable and reset sequence on version2 of LCDC
  OMAPDSS: DISPC: skip scaling calculations when not scaling
  OMAPFB: fix compilation warnings due to missing include
  OMAPDSS: HDMI: fix returned HDMI pixel clock

8 years agoath9k: Revert change that broke AR928X on Acer Ferrari One
Rafael J. Wysocki [Sat, 26 Nov 2011 22:37:43 +0000]
ath9k: Revert change that broke AR928X on Acer Ferrari One

Revert a hunk in drivers/net/wireless/ath/ath9k/hw.c introduced by
commit 2577c6e8f232 ("ath9k_hw: Add support for AR946/8x chipsets") that
caused a nasty regression to appear on my Acer Ferrari One (the box
locks up entirely at random times after the wireless has been started
without any way to get debug information out of it).

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoiio: iio_event_getfd -- fix ev_int build failure
Andy Whitcroft [Fri, 25 Nov 2011 10:56:22 +0000]
iio: iio_event_getfd -- fix ev_int build failure

Fix build failure in staging iio driver:

.../drivers/staging/iio/industrialio-core.c: In function 'iio_event_getfd':
.../drivers/staging/iio/industrialio-core.c:262:32: error:
'ev_int' undeclared (first use in this function)

Also convert the rest of the function to use the new variable.

Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Sat, 26 Nov 2011 17:53:32 +0000]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/44x: Add mtd ndfc to the ppx44x defconfig
  powerpc: Fix compiliation with hugetlbfs enabled
  arch/powerpc/sysdev/ehv_pic.c: add missing kfree
  powerpc/fsl-lbc: Fix for fsl_upm
  drivers/edac/mpc85xx_edac.c: fix memory controller compatible for edac
  powerpc/qe: Fixup QE_General4 errata
  powerpc/85xx: Fix compile error on p3060_qds.c
  powerpc/p3060qds: Fix select of 'MPC8xxx_GPIO'
  powerpc/p1023: set IRQ[4:6,11] to active-high level sensitive for PCIe

8 years agoMerge git://github.com/herbertx/crypto
Linus Torvalds [Sat, 26 Nov 2011 05:55:07 +0000]
Merge git://github.com/herbertx/crypto

* git://github.com/herbertx/crypto:
  crypto: mv_cesa - fix hashing of chunks > 1920 bytes

8 years agoMerge branch 'gpio-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Sat, 26 Nov 2011 05:52:55 +0000]
Merge branch 'gpio-fixes' of git://git./linux/kernel/git/linusw/linux-stericsson

* 'gpio-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  gpio: pca953x: Staticise pca953x_get_altdata()

8 years agopowerpc/44x: Add mtd ndfc to the ppx44x defconfig
Tony Breeds [Tue, 22 Nov 2011 13:50:46 +0000]
powerpc/44x: Add mtd ndfc to the ppx44x defconfig

Signed-off-by: Tony Breeds <tony@bakeyournoodle.com>
Acked-by: Josh Boyer <jwboyer@gmail.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 years agopowerpc: Fix compiliation with hugetlbfs enabled
Kumar Gala [Thu, 24 Nov 2011 09:40:07 +0000]
powerpc: Fix compiliation with hugetlbfs enabled

arch/powerpc/mm/hugetlbpage.c: In function 'reserve_hugetlb_gpages':
arch/powerpc/mm/hugetlbpage.c:312:2: error: implicit declaration of function 'parse_args'

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

8 years agoarch/powerpc/sysdev/ehv_pic.c: add missing kfree
Julia Lawall [Mon, 8 Aug 2011 11:18:02 +0000]
arch/powerpc/sysdev/ehv_pic.c: add missing kfree

At this point, ehv_pic has been allocated but not stored anywhere, so it
should be freed before leaving the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
local idexpression x;
statement S,S1;
expression E;
identifier fl;
expression *ptr != NULL;

x = \(kmalloc\|kzalloc\|kcalloc\)(...);
if (x == NULL) S
<... when != x
     when != if (...) { <+...kfree(x)...+> }
     when any
     when != true x == NULL
if (x == NULL) S1
if (...) { ... when != x
               when forall
 return \(0\|<+...x...+>\|ptr\);
* return ...;
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

8 years agopowerpc/fsl-lbc: Fix for fsl_upm
Alexandre Rusev [Thu, 27 Oct 2011 14:18:37 +0000]
powerpc/fsl-lbc: Fix for fsl_upm

If Freescale LBC driver fails to initialise itself from device tree, then
internal structure is freed only but not NULL-fied.  As result functions
fsl_lbc_find() after checking the structure is not NULL are trying to
access device registers.

Signed-off-by: Alexandre Rusev <arusev@dev.rtsoft.ru>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

8 years agodrivers/edac/mpc85xx_edac.c: fix memory controller compatible for edac
Shaohui Xie [Tue, 15 Nov 2011 22:52:22 +0000]
drivers/edac/mpc85xx_edac.c: fix memory controller compatible for edac

compatible in dts has been changed, so the driver needs to be updated

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

8 years agopowerpc/qe: Fixup QE_General4 errata
Joakim Tjernlund [Tue, 23 Aug 2011 12:30:05 +0000]
powerpc/qe: Fixup QE_General4 errata

QE_General4 should only round up the divisor iff divisor is > 3.
Rounding up lower divisors makes the error too big, causing USB
on MPC832x to fail.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: Timur Tabi <timur@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

8 years agopowerpc/85xx: Fix compile error on p3060_qds.c
Kumar Gala [Sun, 20 Nov 2011 15:58:11 +0000]
powerpc/85xx: Fix compile error on p3060_qds.c

arch/powerpc/platforms/85xx/p3060_qds.c: In function '__machine_initcall_p3060_qds_declare_of_platform_devices':
arch/powerpc/platforms/85xx/p3060_qds.c:73:1: error: implicit declaration of function 'declare_of_platform_devices'

declare_of_platform_devices should have been corenet_ds_publish_devices.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

8 years agopowerpc/p3060qds: Fix select of 'MPC8xxx_GPIO'
Paul Bolle [Sat, 12 Nov 2011 23:50:30 +0000]
powerpc/p3060qds: Fix select of 'MPC8xxx_GPIO'

The driver for the Freescale P3060 QDS got added by commit 96cc017c5b
("[...] Add support for P3060QDS board"). Its Kconfig entry selects
MPC8xxx_GPIO. But at the time that driver got added MPC8xxx_GPIO was
already renamed to GPIO_MPC8XXX, by commit c68308dd50c ("gpio: move
mpc8xxx/512x gpio driver to drivers/gpio").

So make this driver select GPIO_MPC8XXX.

Signed-off-by: Paul Bolle <pebolle@tiscali.nl>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

8 years agopowerpc/p1023: set IRQ[4:6,11] to active-high level sensitive for PCIe
Roy Zang [Mon, 7 Nov 2011 08:32:58 +0000]
powerpc/p1023: set IRQ[4:6,11] to active-high level sensitive for PCIe

P1023 external IRQ[4:6, 11] are not pin out, but the interrupts are
utilized by the PCIe controllers.  As they are not exposed as pins we
need to set them as active-high (internal to the SoC these interrupts
are pulled down).

IRQs[0:3,7:10] are pulled up on the board so we have them set as

Signed-off-by: Roy Zang <tie-fei.zang@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

8 years agoLinux 3.2-rc3
Linus Torvalds [Thu, 24 Nov 2011 04:20:28 +0000]
Linux 3.2-rc3

8 years agoMerge git://github.com/rustyrussell/linux
Linus Torvalds [Thu, 24 Nov 2011 04:19:31 +0000]
Merge git://github.com/rustyrussell/linux

* git://github.com/rustyrussell/linux:
  virtio-pci: make reset operation safer
  virtio-mmio: Correct the name of the guest features selector
  virtio: add HAS_IOMEM dependency to MMIO platform bus driver

8 years agovirtio-pci: make reset operation safer
Michael S. Tsirkin [Thu, 17 Nov 2011 15:41:15 +0000]
virtio-pci: make reset operation safer

virtio pci device reset actually just does an I/O
write, which in PCI is really posted, that is it
can complete on CPU before the device has received it.

Further, interrupts might have been pending on
another CPU, so device callback might get invoked after reset.

This conflicts with how drivers use reset, which is typically:
a callback running after reset completed can race with
unregister, potentially leading to use after free bugs.

Fix by flushing out the write, and flushing pending interrupts.

This assumes that device is never reset from
its vq/config callbacks, or in parallel with being
added/removed, document this assumption.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

8 years agovirtio-mmio: Correct the name of the guest features selector
Sasha Levin [Tue, 15 Nov 2011 14:17:18 +0000]
virtio-mmio: Correct the name of the guest features selector

Guest features selector spelling mistake.

Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: virtualization@lists.linux-foundation.org
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

8 years agovirtio: add HAS_IOMEM dependency to MMIO platform bus driver
Heiko Carstens [Tue, 15 Nov 2011 09:13:24 +0000]
virtio: add HAS_IOMEM dependency to MMIO platform bus driver

Fix this compile error on s390:

CC [M] drivers/virtio/virtio_mmio.o
drivers/virtio/virtio_mmio.c: In function 'vm_get_features':
drivers/virtio/virtio_mmio.c:107:2: error: implicit declaration of function 'writel'

Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Acked-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

8 years agoMerge branch 'upstream-linus' of git://github.com/jgarzik/libata-dev
Linus Torvalds [Thu, 24 Nov 2011 01:26:22 +0000]
Merge branch 'upstream-linus' of git://github.com/jgarzik/libata-dev

* 'upstream-linus' of git://github.com/jgarzik/libata-dev:
  libata: fix build without BMDMA
  [libata] ahci_platform: fix DT probing

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci
Linus Torvalds [Wed, 23 Nov 2011 22:58:46 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci:
  PCI hotplug: shpchp: don't blindly claim non-AMD 0x7450 device IDs
  PCI: pciehp: wait 100 ms after Link Training check
  PCI: pciehp: wait 1000 ms before Link Training check
  PCI: pciehp: Retrieve link speed after link is trained
  PCI: Let PCI_PRI depend on PCI
  PCI: Fix compile errors with PCI_ATS and !PCI_IOV
  PCI / ACPI: Make acpiphp ignore root bridges using PCIe native hotplug

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks...
Linus Torvalds [Wed, 23 Nov 2011 22:28:13 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/tyhicks/ecryptfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: Extend array bounds for all filename chars
  eCryptfs: Flush file in vma close
  eCryptfs: Prevent file create race condition

8 years agoeCryptfs: Extend array bounds for all filename chars
Tyler Hicks [Wed, 23 Nov 2011 17:31:24 +0000]
eCryptfs: Extend array bounds for all filename chars

From mhalcrow's original commit message:

    Characters with ASCII values greater than the size of
    filename_rev_map[] are valid filename characters.
    ecryptfs_decode_from_filename() will access kernel memory beyond
    that array, and ecryptfs_parse_tag_70_packet() will then decrypt
    those characters. The attacker, using the FNEK of the crafted file,
    can then re-encrypt the characters to reveal the kernel memory past
    the end of the filename_rev_map[] array. I expect low security
    impact since this array is statically allocated in the text area,
    and the amount of memory past the array that is accessible is
    limited by the largest possible ASCII filename character.

This patch solves the issue reported by mhalcrow but with an
implementation suggested by Linus to simply extend the length of
filename_rev_map[] to 256. Characters greater than 0x7A are mapped to
0x00, which is how invalid characters less than 0x7A were previously
being handled.

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Reported-by: Michael Halcrow <mhalcrow@google.com>
Cc: stable@kernel.org

8 years agoeCryptfs: Flush file in vma close
Tyler Hicks [Mon, 21 Nov 2011 23:31:29 +0000]
eCryptfs: Flush file in vma close

Dirty pages weren't being written back when an mmap'ed eCryptfs file was
closed before the mapping was unmapped. Since f_ops->flush() is not
called by the munmap() path, the lower file was simply being released.
This patch flushes the eCryptfs file in the vm_ops->close() path.


Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Cc: stable@kernel.org [2.6.39+]

8 years agoeCryptfs: Prevent file create race condition
Tyler Hicks [Mon, 21 Nov 2011 23:31:02 +0000]
eCryptfs: Prevent file create race condition

The file creation path prematurely called d_instantiate() and
unlock_new_inode() before the eCryptfs inode info was fully
allocated and initialized and before the eCryptfs metadata was written
to the lower file.

This could result in race conditions in subsequent file and inode
operations leading to unexpected error conditions or a null pointer
dereference while attempting to use the unallocated memory.


Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Cc: stable@kernel.org

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt...
Linus Torvalds [Wed, 23 Nov 2011 17:50:42 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/rostedt/linux-ktest

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-ktest:
  ktest: Check parent options for iterated tests

8 years agoMerge branch 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvar...
Linus Torvalds [Wed, 23 Nov 2011 17:50:05 +0000]
Merge branch 'i2c-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* 'i2c-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  i2c: Make i2cdev_notifier_call static
  i2c: Delete ANY_I2C_BUS
  i2c: Fix device name for 10-bit slave address
  i2c-algo-bit: Generate correct i2c address sequence for 10-bit target

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...
Linus Torvalds [Wed, 23 Nov 2011 17:49:39 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/broonie/regulator

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: TPS65910: Fix VDD1/2 voltage selector count

8 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Wed, 23 Nov 2011 17:47:25 +0000]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (31 commits)
  drm: integer overflow in drm_mode_dirtyfb_ioctl()
  drivers/gpu/vga/vgaarb.c: add missing kfree
  drm/radeon/kms/atom: unify i2c gpio table handling
  drm/radeon/kms: fix up gpio i2c mask bits for r4xx for real
  ttm: Don't return the bo reserved on error path
  drm/radeon/kms: add a CS ioctl flag not to rewrite tiling flags in the CS
  drm/i915: Fix inconsistent backlight level during disabled
  drm, i915: Fix memory leak in i915_gem_busy_ioctl().
  drm/i915: Use DPCD value for max DP lanes.
  drm/i915: Initiate DP link training only on the lanes we'll be using
  drm/i915: Remove trailing white space
  drm/i915: Try harder during dp pattern 1 link training
  drm/i915: Make DP prepare/commit consistent with DP dpms
  drm/i915: Let panel power sequencing hardware do its job
  drm/i915: Treat PCH eDP like DP in most places
  drm/i915: Remove link_status field from intel_dp structure
  drm/i915: Move common PCH_PP_CONTROL setup to ironlake_get_pp_control
  drm/i915: Module parameters using '-1' as default must be signed type
  drm/i915: Turn on another required clock gating bit on gen6.
  drm/i915: Turn on a required 3D clock gating bit on Sandybridge.

8 years agoregulator: TPS65910: Fix VDD1/2 voltage selector count
Afzal Mohammed [Tue, 8 Nov 2011 13:24:10 +0000]
regulator: TPS65910: Fix VDD1/2 voltage selector count

Count of selector voltage is required for regulator_set_voltage
to work via set_voltage_sel. VDD1/2 currently have it as zero,
so regulator_set_voltage won't work for VDD1/2.
Update count (n_voltages) for VDD1/2.

Output Voltage = (step value * 12.5 mV + 562.5 mV) * gain

With above expr, number of voltages that can be selected is
step value count * gain count

constant for gain count will be called VDD1_2_NUM_VOLT_COARSE

existing constant for step value count is VDD1_2_NUM_VOLTS,
use VDD1_2_NUM_VOLT_FINE instead to make clear that step value
is not the only component in deciding selectable voltage count

Signed-off-by: Afzal Mohammed <afzal@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

8 years agoi2c: Make i2cdev_notifier_call static
Shubhrajyoti D [Wed, 23 Nov 2011 10:33:07 +0000]
i2c: Make i2cdev_notifier_call static

The function i2cdev_notifier_call is used only in i2c-dev file
making it static.
Also removes the following sparse warning

drivers/i2c/i2c-dev.c:582:5: warning: symbol 'i2cdev_notifier_call'
was not declared. Should it be static?

Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>

8 years agoi2c: Delete ANY_I2C_BUS
Jean Delvare [Wed, 23 Nov 2011 10:33:07 +0000]
i2c: Delete ANY_I2C_BUS

Last piece of code using ANY_I2C_BUS was deleted almost 2 years ago,
so ANY_I2C_BUS can go away as well.

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

8 years agoi2c: Fix device name for 10-bit slave address
Jean Delvare [Wed, 23 Nov 2011 10:33:07 +0000]
i2c: Fix device name for 10-bit slave address

10-bit addresses overlap with traditional 7-bit addresses, leading in
device name collisions. Add an arbitrary offset to 10-bit addresses to
prevent this collision. The offset was chosen so that the address is
still easily recognizable.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>

8 years agoi2c-algo-bit: Generate correct i2c address sequence for 10-bit target
Jeffrey (Sheng-Hui) Chu [Wed, 23 Nov 2011 10:33:07 +0000]
i2c-algo-bit: Generate correct i2c address sequence for 10-bit target

The wrong bits were put on the wire, fix that.

This fixes kernel bug #42562.

Signed-off-by: Sheng-Hui J. Chu <jeffchu@broadcom.com>
Cc: stable@kernel.org
Signed-off-by: Jean Delvare <khali@linux-fr.org>

8 years agodrm: integer overflow in drm_mode_dirtyfb_ioctl()
Xi Wang [Wed, 23 Nov 2011 06:12:01 +0000]
drm: integer overflow in drm_mode_dirtyfb_ioctl()

There is a potential integer overflow in drm_mode_dirtyfb_ioctl()
if userspace passes in a large num_clips.  The call to kmalloc would
allocate a small buffer, and the call to fb->funcs->dirty may result
in a memory corruption.

Reported-by: Haogang Chen <haogangchen@gmail.com>
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agoRevert "of/irq: of_irq_find_parent: check for parent equal to child"
Linus Torvalds [Tue, 22 Nov 2011 23:09:20 +0000]
Revert "of/irq: of_irq_find_parent: check for parent equal to child"

This reverts commit dc9372808412edbc653a675a526c2ee6c0c14a91.

As requested by Ben Herrenschmidt:
  "This breaks some powerpc platforms at least.  The practice of having
   a node provide an explicit "interrupt-parent" property pointing to
   itself is an old trick that we've used in the past to allow a
   device-node to have interrupts routed to different controllers.

   In that case, the node also contains an interrupt-map, so the node is
   its own parent, the interrupt resolution hits the map, which then can
   route each individual interrupt to a different parent."

Grant says:
  "Ah, nuts, yes that is broken then.  Yes, please revert the commit and
   Rob & I will come up with a better solution.

   Rob, I think it can be done by explicitly checking for np ==
   desc->interrupt_parent in of_irq_init() instead of relying on
   of_irq_find_parent() returning NULL."

Requested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Cc: Tanmay Inamdar <tinamdar@apm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Tue, 22 Nov 2011 21:19:21 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  mount_subtree() pointless use-after-free
  iio: fix a leak due to improper use of anon_inode_getfd()
  microblaze: bury asm/namei.h

8 years agodrivers/gpu/vga/vgaarb.c: add missing kfree
Julia Lawall [Tue, 15 Nov 2011 22:53:11 +0000]
drivers/gpu/vga/vgaarb.c: add missing kfree

kbuf is a buffer that is local to this function, so all of the error paths
leaving the function should release it.

Signed-off-by: Julia Lawall <julia@diku.dk>
Cc: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agodrm/radeon/kms/atom: unify i2c gpio table handling
Alex Deucher [Mon, 21 Nov 2011 17:41:21 +0000]
drm/radeon/kms/atom: unify i2c gpio table handling

Split the quirks and i2c_rec assignment into separate
functions used by both radeon_lookup_i2c_gpio() and
radeon_atombios_i2c_init().  This avoids duplicating code
and cases where quirks were only added to one of the

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agodrm/radeon/kms: fix up gpio i2c mask bits for r4xx for real
Alex Deucher [Mon, 21 Nov 2011 17:10:14 +0000]
drm/radeon/kms: fix up gpio i2c mask bits for r4xx for real

Fixes i2c test failures when i2c_algo_bit.bit_test=1.

The hw doesn't actually require a mask, so just set it
to the default mask bits for r1xx-r4xx radeon ddc.

I missed this part the first time through.

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@kernel.org
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agottm: Don't return the bo reserved on error path
Thomas Hellstrom [Mon, 21 Nov 2011 12:05:02 +0000]
ttm: Don't return the bo reserved on error path

An unlikely race could case a bo to be returned reserved on an error path.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

8 years agoMerge branch 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux into...
Dave Airlie [Tue, 22 Nov 2011 20:01:00 +0000]
Merge branch 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux into drm-fixes

* 'drm-intel-fixes' of git://people.freedesktop.org/~keithp/linux: (25 commits)
  drm/i915: Fix inconsistent backlight level during disabled
  drm, i915: Fix memory leak in i915_gem_busy_ioctl().
  drm/i915: Use DPCD value for max DP lanes.
  drm/i915: Initiate DP link training only on the lanes we'll be using
  drm/i915: Remove trailing white space
  drm/i915: Try harder during dp pattern 1 link training
  drm/i915: Make DP prepare/commit consistent with DP dpms
  drm/i915: Let panel power sequencing hardware do its job
  drm/i915: Treat PCH eDP like DP in most places
  drm/i915: Remove link_status field from intel_dp structure
  drm/i915: Move common PCH_PP_CONTROL setup to ironlake_get_pp_control
  drm/i915: Module parameters using '-1' as default must be signed type
  drm/i915: Turn on another required clock gating bit on gen6.
  drm/i915: Turn on a required 3D clock gating bit on Sandybridge.
  drm/i915: enable cacheable objects on Ivybridge
  drm/i915: add constants to size fence arrays and fields
  drm/i915: Ivybridge still has fences!
  drm/i915: forcewake warning fixes in debugfs
  drm/i915: Fix object refcount leak on mmappable size limit error path.
  drm/i915: Use mode_config.mutex in ironlake_panel_vdd_work

8 years agomount_subtree() pointless use-after-free
Al Viro [Tue, 22 Nov 2011 17:31:21 +0000]
mount_subtree() pointless use-after-free

d'oh... we'd carefully pinned mnt->mnt_sb down, dropped mnt and attempt
to grab s_umount on mnt->mnt_sb.  The trouble is, *mnt might've been
overwritten by now...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Tue, 22 Nov 2011 17:18:06 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: ams_delta_serio - include linux/module.h
  Input: elantech - adjust hw_version detection logic
  Input: i8042 - add HP Pavilion dv4s to 'notimeout' and 'nomux' blacklists

8 years agoMerge git://www.linux-watchdog.org/linux-watchdog
Linus Torvalds [Tue, 22 Nov 2011 17:17:30 +0000]
Merge git://www.linux-watchdog.org/linux-watchdog

* git://www.linux-watchdog.org/linux-watchdog:
  watchdog: fix initialisation printout in s3c2410_wdt
  watchdog: Don't overwrite error value in wm831x_wdt_set_timeout()
  watchdog: adx_wdt.c: remove driver

8 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Tue, 22 Nov 2011 16:54:15 +0000]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: Revert pnfs ugliness from the generic NFS read code path
  SUNRPC: destroy freshly allocated transport in case of sockaddr init error
  NFS: Fix a regression in the referral code
  nfs: move nfs_file_operations declaration to bottom of file.c (try #2)
  nfs: when attempting to open a directory, fall back on normal lookup (try #5)

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Tue, 22 Nov 2011 16:53:40 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  Btrfs: remove free-space-cache.c WARN during log replay
  Btrfs: sectorsize align offsets in fiemap
  Btrfs: clear pages dirty for io and set them extent mapped
  Btrfs: wait on caching if we're loading the free space cache
  Btrfs: prefix resize related printks with btrfs:
  btrfs: fix stat blocks accounting
  Btrfs: avoid unnecessary bitmap search for cluster setup
  Btrfs: fix to search one more bitmap for cluster setup
  btrfs: mirror_num should be int, not u64
  btrfs: Fix up 32/64-bit compatibility for new ioctls
  Btrfs: fix barrier flushes
  Btrfs: fix tree corruption after multi-thread snapshots and inode_cache flush

8 years agoMerge branch 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 22 Nov 2011 16:22:48 +0000]
Merge branch 'writeback-for-linus' of git://git./linux/kernel/git/wfg/linux

* 'writeback-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/wfg/linux:
  writeback: remove vm_dirties and task->dirties
  writeback: hard throttle 1000+ dd on a slow USB stick
  mm: Make task in balance_dirty_pages() killable

8 years agoMerge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Tue, 22 Nov 2011 04:37:34 +0000]
Merge branch 'staging-linus' of git://git./linux/kernel/git/gregkh/staging

* 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: fix more ET131X build errors
  staging: et131x depends on NET
  staging: slicoss depends on NET
  linux-next: et131x: Fix build error when CONFIG_PM_SLEEP not enabled

8 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Linus Torvalds [Tue, 22 Nov 2011 04:37:11 +0000]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (48 commits)
  USB: Fix Corruption issue in USB ftdi driver ftdi_sio.c
  USB: option: add PID of Huawei E173s 3G modem
  OHCI: final fix for NVIDIA problems (I hope)
  USB: option: release new PID for ZTE 3G modem
  usb: Netlogic: Fix HC_LENGTH call in ehci-xls.c
  USB: storage: ene_ub6250: fix compile warnings
  USB: option: add id for 3G dongle Model VT1000 of Viettel
  USB: serial: pl2303: rm duplicate id
  USB: pch_udc: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor
  USB: pch_udc: Support new device LAPIS Semiconductor ML7831 IOH
  usb-storage: Accept 8020i-protocol commands longer than 12 bytes
  USB: quirks: adding more quirky webcams to avoid squeaky audio
  powerpc/usb: fix type cast for address of ioremap to compatible with 64-bit
  USB: at91: at91-ohci: fix set/get power
  USB: cdc-acm: Fix disconnect() vs close() race
  USB: add quirk for Logitech C600 web cam
  USB: EHCI: fix HUB TT scheduling issue with iso transfer
  USB: XHCI: resume root hubs when the controller resumes
  USB: workaround for bug in old version of GCC
  USB: ark3116 initialisation fix

8 years agoMerge branch 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Linus Torvalds [Tue, 22 Nov 2011 04:36:46 +0000]
Merge branch 'tty-linus' of git://git./linux/kernel/git/gregkh/tty

* 'tty-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
  TTY: ldisc, wait for ldisc infinitely in hangup
  TTY: ldisc, move wait idle to caller
  TTY: ldisc, allow waiting for ldisc arbitrarily long
  Revert "tty/serial: Prevent drop of DCD on suspend for Tegra UARTs"
  RS485: fix inconsistencies in the meaning of some variables
  pch_uart: Fix DMA resource leak issue
  serial,mfd: Fix CMSPAR setup
  tty/serial: Prevent drop of DCD on suspend for Tegra UARTs
  pch_uart: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor
  pch_uart: Support new device LAPIS Semiconductor ML7831 IOH
  pch_uart: Fix hw-flow control issue
  tty: hvc_dcc: Fix duplicate character inputs
  jsm: Change maintainership

8 years agoMerge branch 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Tue, 22 Nov 2011 04:36:26 +0000]
Merge branch 'driver-core-linus' of git://git./linux/kernel/git/gregkh/driver-core

* 'driver-core-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  drivers/base/node.c: fix compilation error with older versions of gcc
  uio: documentation fixups
  device.h: Fix struct member documentation

8 years agoMerge branch 'char-misc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
Linus Torvalds [Tue, 22 Nov 2011 04:36:05 +0000]
Merge branch 'char-misc-linus' of git://git./linux/kernel/git/gregkh/char-misc

* 'char-misc-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
  misc: ad525x_dpot: Fix AD8400 spi transfer size.
  pch_phub: Fix MAC address writing issue for LAPIS ML7831
  pch_phub: Improve ADE(Address Decode Enable) control
  pch_phub: Change company name OKI SEMICONDUCTOR to LAPIS Semiconductor
  pch_phub: Support new device LAPIS Semiconductor ML7831 IOH
  pcie-gadget-spear: Add "platform:" prefix for platform modalias
  MAINTAINERS: add CHAR and MISC driver maintainers

8 years agoviafb: correct sync polarity for OLPC DCON
Daniel Drake [Mon, 21 Nov 2011 15:05:56 +0000]
viafb: correct sync polarity for OLPC DCON

While the OLPC display appears to be able to handle either positive
or negative sync, the Display Controller only recognises positive sync.

This brings viafb (for XO-1.5) in line with lxfb (for XO-1) and
fixes a recent regression where the XO-1.5 DCON could no longer be
frozen. Thanks to Florian Tobias Schandinat for helping identify
the fix.

Test case: from a vt,
echo 1 > /sys/devices/platform/dcon/freeze
should cause the current screen contents to freeze, rather than garbage being

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: stable@kernel.org

8 years agoMerge branch 'for-3.2-rc' of git://gitorious.org/linux-omap-dss2/linux into fbdev...
Florian Tobias Schandinat [Tue, 22 Nov 2011 00:55:59 +0000]
Merge branch 'for-3.2-rc' of git://gitorious.org/linux-omap-dss2/linux into fbdev-for-linus

8 years agovideo:da8xx-fb: Disable and reset sequence on version2 of LCDC
Manjunathappa, Prakash [Tue, 15 Nov 2011 12:02:23 +0000]
video:da8xx-fb: Disable and reset sequence on version2 of LCDC

Patch follows the disable and software reset sequence specified
in version2 to LCDC functional specification.
Without this flicker is observed on re-enabling the LCDC.

Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>

8 years agoiio: fix a leak due to improper use of anon_inode_getfd()
Al Viro [Mon, 21 Nov 2011 22:25:37 +0000]
iio: fix a leak due to improper use of anon_inode_getfd()

it can fail and in that case ->release() will *not* be called...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8 years agomicroblaze: bury asm/namei.h
Al Viro [Mon, 21 Nov 2011 21:48:28 +0000]
microblaze: bury asm/namei.h

altroot support has been gone for years, along with arch/*/asm/namei.h;
looks like a dummy survivor that sat it out in microblaze tree...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8 years agoMerge branch 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Mon, 21 Nov 2011 20:11:37 +0000]
Merge branch 'dev' of git://git./linux/kernel/git/tytso/ext4

* 'dev' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: fix up a undefined error in ext4_free_blocks in debugging code
  ext4: add blk_finish_plug in error case of writepages.
  ext4: Remove kernel_lock annotations
  ext4: ignore journalled data options on remount if fs has no journal

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph...
Linus Torvalds [Mon, 21 Nov 2011 20:11:13 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/sage/ceph-client

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client:
  libceph: Allocate larger oid buffer in request msgs
  ceph: initialize root dentry
  ceph: fix iput race when queueing inode work

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Mon, 21 Nov 2011 20:10:47 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  VFS: Log the fact that we've given ELOOP rather than creating a loop
  minixfs: kill manual hweight(), simplify
  fs/minix: Verify bitmap block counts before mounting

8 years agofix braino in um patchset (mea culpa)
Al Viro [Mon, 21 Nov 2011 03:52:18 +0000]
fix braino in um patchset (mea culpa)

wrong register returned...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoBtrfs: remove free-space-cache.c WARN during log replay
Chris Mason [Mon, 21 Nov 2011 14:39:11 +0000]
Btrfs: remove free-space-cache.c WARN during log replay

The log replay code only partially loads block groups, since
the block group caching code is able to detect and deal with
extents the logging code has pinned down.

While the logging code is pinning down block groups, there is
a bogus WARN_ON we're hitting if the code wasn't able to find
an extent in the cache.  This commit removes the warning because
it can happen any time there isn't a valid free space cache
for that block group.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agogpio: pca953x: Staticise pca953x_get_altdata()
Mark Brown [Mon, 21 Nov 2011 17:57:25 +0000]
gpio: pca953x: Staticise pca953x_get_altdata()

It's not used outside of the driver so doesn't need to be exported, and
sparse notices this and complains about it.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

8 years agoext4: fix up a undefined error in ext4_free_blocks in debugging code
Yongqiang Yang [Mon, 21 Nov 2011 17:09:19 +0000]
ext4: fix up a undefined error in ext4_free_blocks in debugging code

sbi is not defined, so let ext4_free_blocks use EXT4_SB(sb) instead
when EXT4FS_DEBUG is defined.

Signed-off-by: Yongqiang Yang <xiaoqiangnk@gmail.com>

8 years agocrypto: mv_cesa - fix hashing of chunks > 1920 bytes
Phil Sutter [Wed, 16 Nov 2011 17:28:01 +0000]
crypto: mv_cesa - fix hashing of chunks > 1920 bytes

This was broken by commit 7759995c75ae0cbd4c861582908449f6b6208e7a (yes,
myself). The basic problem here is since the digest state is only saved
after the last chunk, the state array is only valid when handling the
first chunk of the next buffer. Broken since linux-3.0.

Signed-off-by: Phil Sutter <phil.sutter@viprinet.com>
Cc: <stable@kernel.org> # 3.1.x
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

8 years agoVFS: Log the fact that we've given ELOOP rather than creating a loop
David Howells [Tue, 16 Aug 2011 14:31:30 +0000]
VFS: Log the fact that we've given ELOOP rather than creating a loop

To prevent an NFS server from being used to create a directory loop in an NFS
superblock on the client, the following patch was committed:

commit 1836750115f20b774e55c032a3893e8c5bdf41ed
Author: Al Viro <viro@zeniv.linux.org.uk>
Date:   Tue Jul 12 21:42:24 2011 -0400
Subject: fix loop checks in d_materialise_unique()

This causes ELOOP to be reported to anyone trying to access the dentry that
would otherwise cause the kernel to complete the loop.

However, no indication is given to the caller as to why an operation that ought
to work doesn't.  The fault is with the kernel, which doesn't want to try and
solve the problem as it gets horrendously messy if there's another mountpoint
somewhere in the trees being spliced that can't be moved[*].

[*] The real problem is that we don't handle the excision of a subtree that
gets moved _out_ of what we can see.  This can happen on the server where a
directory is merely moved between two other dirs on the same filesystem, but
where destination dir is not accessible by the client.

So, given the choice to return ELOOP rather than trying to reconfigure the
dentry tree, we should give the caller some indication of why they aren't being
allowed to make what should be a legitimate request and log a message.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Sachin Prabhu <sprabhu@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sun, 20 Nov 2011 22:59:33 +0000]
Merge git://git./linux/kernel/git/davem/net

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (86 commits)
  ipv4: fix redirect handling
  ping: dont increment ICMP_MIB_INERRORS
  sky2: fix hang in napi_disable
  sky2: enforce minimum ring size
  bonding: Don't allow mode change via sysfs with slaves present
  f_phonet: fix page offset of first received fragment
  stmmac: fix pm functions avoiding sleep on spinlock
  stmmac: remove spin_lock in stmmac_ioctl.
  stmmac: parameters auto-tuning through HW cap reg
  stmmac: fix advertising 1000Base capabilties for non GMII iface
  stmmac: use mdelay on timeout of sw reset
  sky2: version 1.30
  sky2: used fixed RSS key
  sky2: reduce default Tx ring size
  sky2: rename up/down functions
  sky2: pci posting issues
  sky2: fix hang on shutdown (and other irq issues)
  r6040: fix check against MCRO_HASHEN bit in r6040_multicast_list
  MAINTAINERS: change email address for shemminger
  pch_gbe: Move #include of module.h

8 years agoMerge branch 'kvm-updates/3.2' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 20 Nov 2011 22:57:43 +0000]
Merge branch 'kvm-updates/3.2' of git://git./virt/kvm/kvm

* 'kvm-updates/3.2' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM guest: prevent tracing recursion with kvmclock
  Revert "KVM: PPC: Add support for explicit HIOR setting"
  KVM: VMX: Check for automatic switch msr table overflow
  KVM: VMX: Add support for guest/host-only profiling
  KVM: VMX: add support for switching of PERF_GLOBAL_CTRL
  KVM: s390: announce SYNC_MMU
  KVM: s390: Fix tprot locking
  KVM: s390: handle SIGP sense running intercepts
  KVM: s390: Fix RUNNING flag misinterpretation

8 years agoMerge branch 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur...
Linus Torvalds [Sun, 20 Nov 2011 22:34:58 +0000]
Merge branch 'fixes' of ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm

* 'fixes' of http://ftp.arm.linux.org.uk/pub/linux/arm/kernel/git-cur/linux-2.6-arm:
  ARM: wire up process_vm_writev and process_vm_readv syscalls
  ARM: 7160/1: setup: avoid overflowing {elf,arch}_name from proc_info_list
  ARM: 7158/1: add new MFP implement for NUC900
  ARM: 7157/1: fix a building WARNING for nuc900
  ARM: 7156/1: l2x0: fix compile error on !CONFIG_USE_OF
  ARM: 7155/1: arch.h: Declare 'pt_regs' locally
  ARM: 7154/1: mach-bcmring: fix build error in dma.c
  ARM: 7153/1: mach-bcmring: fix build error in core.c
  ARM: 7152/1: distclean: Remove generated .dtb files
  ARM: 7150/1: Allow kernel unaligned accesses on ARMv6+ processors
  ARM: 7149/1: spi/pl022: Enable clock in probe
  Revert "ARM: 7098/1: kdump: copy kernel relocation code at the kexec prepare stage"

8 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Sun, 20 Nov 2011 22:33:02 +0000]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/linux-pm

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Suspend: Fix bug in suspend statistics update
  PM / Hibernate: Fix the early termination of test modes
  PM / shmobile: Fix build of sh7372_pm_init() for CONFIG_PM unset
  PM Sleep: Do not extend wakeup paths to devices with ignore_children set
  PM / driver core: disable device's runtime PM during shutdown
  PM / devfreq: correct Kconfig dependency
  PM / devfreq: fix use after free in devfreq_remove_device
  PM / shmobile: Avoid restoring the INTCS state during initialization
  PM / devfreq: Remove compiler error after irq.h update
  PM / QoS: Properly use the WARN() macro in dev_pm_qos_add_request()
  PM / Clocks: Only disable enabled clocks in pm_clk_suspend()
  ARM: mach-shmobile: sh7372 A3SP no_suspend_console fix
  PM / shmobile: Don't skip debugging output in pd_power_up()

8 years agoBtrfs: sectorsize align offsets in fiemap
Josef Bacik [Thu, 17 Nov 2011 16:34:31 +0000]
Btrfs: sectorsize align offsets in fiemap

We've been hitting BUG()'s in btrfs_cont_expand and btrfs_fallocate and anywhere
else that calls btrfs_get_extent while running xfstests 13 in a loop.  This is
because fiemap is calling btrfs_get_extent with non-sectorsize aligned offsets,
which will end up adding mappings that are not sectorsize aligned, which will
cause problems in some cases for subsequent calls to btrfs_get_extent for
similar areas that are sectorsize aligned.  With this patch I ran xfstests 13 in
a loop for a couple of hours and didn't hit the problem that I could previously
hit in at most 20 minutes.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>

8 years agoBtrfs: clear pages dirty for io and set them extent mapped
Josef Bacik [Tue, 15 Nov 2011 14:31:24 +0000]
Btrfs: clear pages dirty for io and set them extent mapped

When doing the io_ctl helpers to clean up the free space cache stuff I stopped
using our normal prepare_pages stuff, which means I of course forgot to do
things like set the pages extent mapped, which will cause us all sorts of
wonderful propblems.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>

8 years agoBtrfs: wait on caching if we're loading the free space cache
Josef Bacik [Mon, 14 Nov 2011 18:52:14 +0000]
Btrfs: wait on caching if we're loading the free space cache

We've been hitting panics when running xfstest 13 in a loop for long periods of
time.  And actually this problem has always existed so we've been hitting these
things randomly for a while.  Basically what happens is we get a thread coming
into the allocator and reading the space cache off of disk and adding the
entries to the free space cache as we go.  Then we get another thread that comes
in and tries to allocate from that block group.  Since block_group->cached !=
BTRFS_CACHE_NO it goes ahead and tries to do the allocation.  We do this because
if we're doing the old slow way of caching we don't want to hold people up and
wait for everything to finish.  The problem with this is we could end up
discarding the space cache at some arbitrary point in the future, which means we
could very well end up allocating space that is either bad, or when the real
caching happens it could end up thinking the space isn't in use when it really
is and cause all sorts of other problems.

The solution is to add a new flag to indicate we are loading the free space
cache from disk, and always try to cache the block group if cache->cached !=
BTRFS_CACHE_FINISHED.  That way if we are loading the space cache anybody else
who tries to allocate from the block group will have to wait until it's finished
to make sure it completes successfully.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>

8 years agoBtrfs: prefix resize related printks with btrfs:
Arnd Hannemann [Sun, 20 Nov 2011 12:33:38 +0000]
Btrfs: prefix resize related printks with btrfs:

For the user it is confusing to find something like:
[10197.627710] new size for /dev/mapper/vg0-usr_share is 3221225472
in kernel log, because it doesn't point directly to btrfs.

This patch prefixes those messages with "btrfs:" like other btrfs
related printks.

Signed-off-by: Arnd Hannemann <arnd@arndnet.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agobtrfs: fix stat blocks accounting
David Sterba [Sun, 20 Nov 2011 12:33:38 +0000]
btrfs: fix stat blocks accounting

Round inode bytes and delalloc bytes up to real blocksize before
converting to sector size. Otherwise eg. files smaller than 512
are reported with zero blocks due to incorrect rounding.

Signed-off-by: David Sterba <dsterba@suse.cz>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agoBtrfs: avoid unnecessary bitmap search for cluster setup
Li Zefan [Sun, 20 Nov 2011 12:33:38 +0000]
Btrfs: avoid unnecessary bitmap search for cluster setup

setup_cluster_no_bitmap() searches all the extents and bitmaps starting
from offset. Therefore if it returns -ENOSPC, all the bitmaps starting
from offset are in the bitmaps list, so it's sufficient to search from
this list in setup_cluser_bitmap().

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agoBtrfs: fix to search one more bitmap for cluster setup
Li Zefan [Sun, 20 Nov 2011 12:33:38 +0000]
Btrfs: fix to search one more bitmap for cluster setup

Suppose there are two bitmaps [0, 256], [256, 512] and one extent
[100, 120] in the free space cache, and we want to setup a cluster
with offset=100, bytes=50.

In this case, there will be only one bitmap [256, 512] in the temporary
bitmaps list, and then setup_cluster_bitmap() won't search bitmap [0, 256].

The cause is, the list is constructed in setup_cluster_no_bitmap(),
and only bitmaps with bitmap_entry->offset >= offset will be added
into the list, and the very bitmap that convers offset has
bitmap_entry->offset <= offset.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agobtrfs: mirror_num should be int, not u64
Jan Schmidt [Sun, 20 Nov 2011 12:33:38 +0000]
btrfs: mirror_num should be int, not u64

My previous patch introduced some u64 for failed_mirror variables, this one
makes it consistent again.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agobtrfs: Fix up 32/64-bit compatibility for new ioctls
Jeff Mahoney [Sun, 20 Nov 2011 12:31:57 +0000]
btrfs: Fix up 32/64-bit compatibility for new ioctls

 This patch casts to unsigned long before casting to a pointer and fixes
 the following warnings:
fs/btrfs/extent_io.c:2289:20: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
fs/btrfs/ioctl.c:2933:37: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
fs/btrfs/ioctl.c:2937:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
fs/btrfs/ioctl.c:3020:21: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
fs/btrfs/scrub.c:275:4: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
fs/btrfs/backref.c:686:27: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

8 years agoBtrfs: fix barrier flushes
Chris Mason [Fri, 18 Nov 2011 20:07:51 +0000]
Btrfs: fix barrier flushes

When btrfs is writing the super blocks, it send barrier flushes to make
sure writeback caching drives get all the metadata on disk in the
right order.

But, we have two bugs in the way these are sent down.  When doing
full commits (not via the tree log), we are sending the barrier down
before the last super when it should be going down before the first.

In multi-device setups, we should be waiting for the barriers to
complete on all devices before writing any of the supers.

Both of these bugs can cause corruptions on power failures.  We fix it
with some new code to send down empty barriers to all devices before
writing the first super.

Alexandre Oliva found the multi-device bug.  Arne Jansen did the async
barrier loop.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
Reported-by: Alexandre Oliva <oliva@lsd.ic.unicamp.br>

8 years agoKVM guest: prevent tracing recursion with kvmclock
Avi Kivity [Tue, 15 Nov 2011 12:59:07 +0000]
KVM guest: prevent tracing recursion with kvmclock

Prevent tracing of preempt_disable() in get_cpu_var() in
kvm_clock_read(). When CONFIG_DEBUG_PREEMPT is enabled,
preempt_disable/enable() are traced and this causes the function_graph
tracer to go into an infinite recursion. By open coding the
preempt_disable() around the get_cpu_var(), we can use the notrace
version which prevents preempt_disable/enable() from being traced and
prevents the recursion.

Based on a similar patch for Xen from Jeremy Fitzhardinge.

Tested-by: Gleb Natapov <gleb@redhat.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Avi Kivity <avi@redhat.com>

8 years agodrm/radeon/kms: add a CS ioctl flag not to rewrite tiling flags in the CS
Marek Olšák [Mon, 24 Oct 2011 23:38:45 +0000]
drm/radeon/kms: add a CS ioctl flag not to rewrite tiling flags in the CS

This adds a new optional chunk to the CS ioctl that specifies optional flags
to the CS parser. Why this is useful is explained below. Note that some regs
no longer need the NOP relocation packet if this feature is enabled.
Tested on r300g and r600g with this flag disabled and enabled.

Assume there are two contexts sharing the same mipmapped tiled texture.
One context wants to render into the first mipmap and the other one
wants to render into the last mipmap. As you probably know, the hardware
has a MACRO_SWITCH feature, which turns off macro tiling for small mipmaps,
but that only applies to samplers.
(at least on r300-r500, though later hardware likely behaves the same)

So we want to just re-set the tiling flags before rendering (writing
packets), right? ... No. The contexts run in parallel, so they may
set the tiling flags simultaneously and then fire their command streams
also simultaneously. The last one setting the flags wins, the other one

Another problem is when one context wants to render into the first and
the last mipmap in one CS. Impossible. It must flush before changing
tiling flags and do the rendering into the smaller mipmaps in another CS.

Yet another problem is that writing copy_blit in userspace would be a mess
involving re-setting tiling flags to please the kernel, and causing races
with other contexts at the same time.

The only way out of this is to send tiling flags with each CS, ideally
with each relocation. But we already do that through the registers.
So let's just use what we have in the registers.

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

8 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Sat, 19 Nov 2011 18:56:01 +0000]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (exynos4_tmu) Fix Kconfig dependency

[ Merging code in-flight, just because I can.  What timezone should I
  use?  - Linus ]

8 years agominixfs: kill manual hweight(), simplify
Al Viro [Sat, 27 Aug 2011 02:38:50 +0000]
minixfs: kill manual hweight(), simplify

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8 years agofs/minix: Verify bitmap block counts before mounting
Josh Boyer [Fri, 19 Aug 2011 18:50:26 +0000]
fs/minix: Verify bitmap block counts before mounting

Newer versions of MINIX can create filesystems that allocate an extra
bitmap block.  Mounting of this succeeds, but doing a statfs call will
result in an oops in count_free because of a negative number being used
for the bh index.

Avoid this by verifying the number of allocated blocks at mount time,
erroring out if there are not enough and make statfs ignore the extras
if there are too many.

This fixes https://bugzilla.kernel.org/show_bug.cgi?id=18792

Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

8 years agoPM / Suspend: Fix bug in suspend statistics update
Srivatsa S. Bhat [Sat, 19 Nov 2011 13:37:57 +0000]
PM / Suspend: Fix bug in suspend statistics update

After commit 2a77c46de1e3dace73745015635ebbc648eca69c
(PM / Suspend: Add statistics debugfs file for suspend to RAM)
a missing pair of braces inside the state_store() function causes even
invalid arguments to suspend to be wrongly treated as failed suspend
attempts. Fix this.

[rjw: Put the hash/subject of the buggy commit into the changelog.]

Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

8 years agoXen: update MAINTAINER info
Jeremy Fitzhardinge [Fri, 18 Nov 2011 23:56:06 +0000]
Xen: update MAINTAINER info

No longer at Citrix, still interested in Xen.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agohugetlb: remove dummy definitions of HPAGE_MASK and HPAGE_SIZE
David Rientjes [Sat, 19 Nov 2011 10:33:57 +0000]
hugetlb: remove dummy definitions of HPAGE_MASK and HPAGE_SIZE

Dummy, non-zero definitions for HPAGE_MASK and HPAGE_SIZE were added in
51c6f666fceb ("mm: ZAP_BLOCK causes redundant work") to avoid a divide
by zero in generic kernel code.

That code has since been removed, but probably should never have been
added in the first place: we don't want HPAGE_SIZE to act like PAGE_SIZE
for code that is working with hugepages, for example, when the
dependency on CONFIG_HUGETLB_PAGE has not been fulfilled.

Because hugepage size can differ from architecture to architecture, each
is required to have their own definitions for both HPAGE_MASK and
HPAGE_SIZE.  This is always done in arch/*/include/asm/page.h.

So, just remove the dummy and dangerous definitions since they are no
longer needed and reveals the correct dependencies.  Tested on
architectures using the definitions with allyesconfig: x86 (even with
thp), hppa, mips, powerpc, s390, sh3, sh4, sparc, and sparc64, and with
defconfig on ia64.

Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

8 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 19 Nov 2011 11:06:39 +0000]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  new helper: mount_subtree()
  switch create_mnt_ns() to saner calling conventions, fix double mntput() in nfs
  btrfs: fix double mntput() in mount_subvol()

8 years agoMerge branch 'for-linus' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Sat, 19 Nov 2011 11:05:17 +0000]
Merge branch 'for-linus' of git://oss.sgi.com/xfs/xfs

* 'for-linus' of git://oss.sgi.com/xfs/xfs:
  MAINTAINERS: update XFS maintainer entry
  xfs: use doalloc flag in xfs_qm_dqattach_one()

8 years agoMerge branch 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Sat, 19 Nov 2011 00:23:23 +0000]
Merge branch 'for-3.2-fixes' of git://git./linux/kernel/git/tj/cgroup

* 'for-3.2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: Replace Paul Menage with Tejun Heo as cgroups maintainer

8 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 19 Nov 2011 00:16:18 +0000]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  random: Fix handing of arch_get_random_long in get_random_bytes()
  x86: Call stop_machine_text_poke() on all CPUs
  x86, ioapic: Only print ioapic debug information for IRQs belonging to an ioapic chip
  x86/mrst: Avoid reporting wrong nmi status
  x86/mrst: Add support for Penwell clock calibration
  x86/apic: Allow use of lapic timer early calibration result
  x86/apic: Do not clear nr_irqs_gsi if no legacy irqs
  x86/platform: Add a wallclock_init func to x86_platforms ops
  x86/mce: Make mce_chrdev_ops 'static const'

8 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
Linus Torvalds [Sat, 19 Nov 2011 00:04:12 +0000]
Merge git://git./linux/kernel/git/davem/ide

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
  cy82c693: fix PCI device selection
  icside: DMA support fix
  IDE: Don't powerdown Compaq Triflex IDE device on suspend
  piix: ICH7 MWDMA1 errata