pandora-kernel.git
12 years agoBtrfs: fix wrong mtime and ctime when creating snapshots
Miao Xie [Thu, 9 Aug 2012 03:39:36 +0000 (21:39 -0600)]
Btrfs: fix wrong mtime and ctime when creating snapshots

When we created a new snapshot, the mtime and ctime of its parent directory
were not updated. Fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
12 years agoBtrfs: fix race in run_clustered_refs
Arne Jansen [Thu, 9 Aug 2012 06:16:53 +0000 (00:16 -0600)]
Btrfs: fix race in run_clustered_refs

With commit

commit d1270cd91f308c9d22b2804720c36ccd32dbc35e
Author: Arne Jansen <sensille@gmx.net>
Date:   Tue Sep 13 15:16:43 2011 +0200

     Btrfs: put back delayed refs that are too new

I added a window where the delayed_ref's head->ref_mod code can diverge
from the sum of the remaining refs, because we release the head->mutex
in the middle. This leads to btrfs_lookup_extent_info returning wrong
numbers. This patch fixes this by adjusting the head's ref_mod with each
delayed ref we run.

Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
12 years agoBtrfs: don't run __tree_mod_log_free_eb on leaves
Chris Mason [Tue, 7 Aug 2012 19:34:49 +0000 (15:34 -0400)]
Btrfs: don't run __tree_mod_log_free_eb on leaves

When we split a leaf, we may end up inserting a new root on top of that
leaf.  The reflog code was incorrectly assuming the old root was always
a node.  This makes sure we skip over leaves.

Signed-off-by: Chris Mason <chris.mason@fusionio.com>
12 years agoBtrfs: increase the size of the free space cache
Josef Bacik [Mon, 6 Aug 2012 19:46:38 +0000 (13:46 -0600)]
Btrfs: increase the size of the free space cache

Arne was complaining about the space cache having mismatching generation
numbers when debugging a deadlock.  This is because we can run out of space
in our preallocated range for our space cache if you have a pretty
fragmented amount of space in your pinned space.  So just increase the
amount of space we preallocate for space cache so we can be sure to have
enough space.  This will only really affect data ranges since their the only
chunks that end up larger than 256MB.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
12 years agoBtrfs: barrier before waitqueue_active
Josef Bacik [Wed, 1 Aug 2012 19:36:24 +0000 (15:36 -0400)]
Btrfs: barrier before waitqueue_active

We need a barrir before calling waitqueue_active otherwise we will miss
wakeups.  So in places that do atomic_dec(); then atomic_read() use
atomic_dec_return() which imply a memory barrier (see memory-barriers.txt)
and then add an explicit memory barrier everywhere else that need them.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
12 years agoBtrfs: fix deadlock in wait_for_more_refs
Arne Jansen [Mon, 6 Aug 2012 20:18:51 +0000 (14:18 -0600)]
Btrfs: fix deadlock in wait_for_more_refs

Commit a168650c introduced a waiting mechanism to prevent busy waiting in
btrfs_run_delayed_refs. This can deadlock with btrfs_run_ordered_operations,
where a tree_mod_seq is held while waiting for the io to complete, while
the end_io calls btrfs_run_delayed_refs.
This whole mechanism is unnecessary. If not enough runnable refs are
available to satisfy count, just return as count is more like a guideline
than a strict requirement.
In case we have to run all refs, commit transaction makes sure that no
other threads are working in the transaction anymore, so we just assert
here that no refs are blocked.

Signed-off-by: Arne Jansen <sensille@gmx.net>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
12 years agobtrfs: fix second lock in btrfs_delete_delayed_items()
Fengguang Wu [Sat, 4 Aug 2012 07:45:02 +0000 (01:45 -0600)]
btrfs: fix second lock in btrfs_delete_delayed_items()

Fix a real bug caught by coccinelle.

fs/btrfs/delayed-inode.c:1013:1-11: second lock on line 1013

Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
12 years agoBtrfs: don't allocate a seperate csums array for direct reads
Josef Bacik [Fri, 3 Aug 2012 20:49:19 +0000 (16:49 -0400)]
Btrfs: don't allocate a seperate csums array for direct reads

We've been allocating a big array for csums instead of storing them in the
io_tree like we do for buffered reads because previously we were locking the
entire range, so we didn't have an extent state for each sector of the
range.  But now that we do the range locking as we map the buffers we can
limit the mapping lenght to sectorsize and use the private part of the
io_tree for our csums.  This allows us to avoid an extra memory allocation
for direct reads which could incur latency.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
12 years agoBtrfs: do not strdup non existent strings
Josef Bacik [Thu, 2 Aug 2012 14:23:59 +0000 (10:23 -0400)]
Btrfs: do not strdup non existent strings

When we close devices we add back empty devices for some reason that escapes
me.  In the case of a missing dev we don't allocate an rcu_string for it's
name, so check to see if the device has a name and if it doesn't don't
bother strdup()'ing it.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
12 years agoBtrfs: do not use missing devices when showing devname
Josef Bacik [Thu, 2 Aug 2012 14:22:20 +0000 (10:22 -0400)]
Btrfs: do not use missing devices when showing devname

If you do the following

mkfs.btrfs /dev/sdb /dev/sdc
rmmod btrfs
dd if=/dev/zero of=/dev/sdb bs=1M count=1
mount -o degraded /dev/sdc /mnt/btrfs-test

the box will panic trying to deref the name for the missing dev since it is
the lower numbered devid.  So fix show_devname to not use missing devices.
Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
12 years agoBtrfs: fix that error value is changed by mistake
Stefan Behrens [Wed, 1 Aug 2012 10:28:01 +0000 (04:28 -0600)]
Btrfs: fix that error value is changed by mistake

In iterate_inodes_from_logical() the error result from
extent_from_logical() is patched by mistake. Typically ENOENT is
patched to EINVAL because (-ENOENT & BTRFS_EXTENT_FLAG_TREE_BLOCK)
evaluates to true.

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
12 years agoBtrfs: lock extents as we map them in DIO
Josef Bacik [Tue, 31 Jul 2012 20:28:48 +0000 (16:28 -0400)]
Btrfs: lock extents as we map them in DIO

A deadlock in xfstests 113 was uncovered by commit

d187663ef24cd3d033f0cbf2867e70b36a3a90b8

This is because we would not return EIOCBQUEUED for short AIO reads, instead
we'd wait for the DIO to complete and then return the amount of data we
transferred, which would allow our stuff to unlock the remaning amount.  But
with this change this no longer happens, so if we have a short AIO read (for
example if we try to read past EOF), we could leave the section from EOF to
the end of where we tried to read locked.  Fixing this is tricky since there
is no clear way to know exactly how much data DIO truly submitted for IO, so
to make this less hard on ourselves and less combersome we need to lock the
extents as we try to map them, and then we unlock any areas we didn't
actually map.  This makes us completely safe from deadlocks and reliance on
a particular behavior of the DIO code.  This also lays the groundwork for
allowing us to use the normal csum storage method for reads which means we
can remove an allocation.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
12 years agoBtrfs: fix some endian bugs handling the root times
Dan Carpenter [Mon, 30 Jul 2012 08:10:44 +0000 (02:10 -0600)]
Btrfs: fix some endian bugs handling the root times

"trans->transid" is cpu endian but we want to store the data as little
endian.  "item->ctime.nsec" is only 32 bits, not 64.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
12 years agoBtrfs: unlock on error in btrfs_delalloc_reserve_metadata()
Dan Carpenter [Mon, 30 Jul 2012 08:15:15 +0000 (02:15 -0600)]
Btrfs: unlock on error in btrfs_delalloc_reserve_metadata()

We should release this mutex before returning the error code.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
12 years agoBtrfs: checking for NULL instead of IS_ERR
Dan Carpenter [Mon, 30 Jul 2012 08:15:43 +0000 (02:15 -0600)]
Btrfs: checking for NULL instead of IS_ERR

add_qgroup_rb() never returns NULL, only error pointers.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
12 years agoBtrfs: fix some error codes in btrfs_qgroup_inherit()
Dan Carpenter [Mon, 30 Jul 2012 08:16:10 +0000 (02:16 -0600)]
Btrfs: fix some error codes in btrfs_qgroup_inherit()

These are returning zero when it should be returning a negative error
code.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
12 years agoBtrfs: fix a misplaced address operator in a condition
Stefan Behrens [Thu, 26 Jul 2012 09:40:35 +0000 (03:40 -0600)]
Btrfs: fix a misplaced address operator in a condition

This should obviously not be "if (&flag)" but "if (flag)".

Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
12 years agoALSA: hda - Don't trust codec EPSS bit for IDT 92HD83xx & co
Takashi Iwai [Tue, 28 Aug 2012 16:20:13 +0000 (09:20 -0700)]
ALSA: hda - Don't trust codec EPSS bit for IDT 92HD83xx & co

These codecs seem reporting EPSS but require longer delay for the
proper D3 transition.  For example, D3_STOP_CLOCK_OK bit won't be set
correctly even after D3.

In this patch, codec->epss flag is overridden for avoid the
misbehavior.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agoALSA: hda - Avoid unnecessary parameter read for EPSS
Takashi Iwai [Tue, 28 Aug 2012 16:18:01 +0000 (09:18 -0700)]
ALSA: hda - Avoid unnecessary parameter read for EPSS

EPSS parameter should be static, so we can read it once and remember.
This also allows more easily to override the wrong EPSS capability
reported from a codec by changing the flag in the codec
initialization step.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
12 years agos390/smp: add missing smp_store_status() for !SMP
Heiko Carstens [Mon, 27 Aug 2012 13:18:45 +0000 (15:18 +0200)]
s390/smp: add missing smp_store_status() for !SMP

Fix this compile error:

arch/s390/kernel/machine_kexec.c: In function ‘setup_regs’:
arch/s390/kernel/machine_kexec.c:63:3: error: implicit declaration
 of function ‘smp_store_status’ [-Werror=implicit-function-declaration]

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
12 years agos390/dasd: fix ioctl return value
Heiko Carstens [Mon, 27 Aug 2012 08:59:42 +0000 (10:59 +0200)]
s390/dasd: fix ioctl return value

For unimplemented ioctls the dasd driver should return -ENOTTY.

Reported-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Acked-by: Stefan Weinhuber <wein@de.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
12 years agoKVM: x86: fix KVM_GET_MSR for PV EOI
Michael S. Tsirkin [Sun, 26 Aug 2012 15:00:29 +0000 (18:00 +0300)]
KVM: x86: fix KVM_GET_MSR for PV EOI

KVM_GET_MSR was missing support for PV EOI,
which is needed for migration.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
12 years agoMerge tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck...
Linus Torvalds [Sun, 26 Aug 2012 20:02:51 +0000 (13:02 -0700)]
Merge tag 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/linux-staging

Pull a hwmon fix from Guenter Roeck:
 "Fix sensor readings for Asus M5A78L in asus_atk0110 driver."

* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (asus_atk0110) Add quirk for Asus M5A78L

12 years agokvm: Fix nonsense handling of compat ioctl
Alan Cox [Wed, 22 Aug 2012 13:34:11 +0000 (14:34 +0100)]
kvm: Fix nonsense handling of compat ioctl

KVM_SET_SIGNAL_MASK passed a NULL argument leaves the on stack signal
sets uninitialized. It then passes them through to
kvm_vcpu_ioctl_set_sigmask.

We should be passing a NULL in this case not translated garbage.

Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
12 years agoMerge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream
Linus Torvalds [Sun, 26 Aug 2012 17:14:11 +0000 (10:14 -0700)]
Merge tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream

Pull LogFS bugfixes from Prasad Joshi:

 - "logfs: query block device for number of pages to send with bio"

This BUG was found when LogFS was used on KVM. The patch fixes
the problem by asking for underlaying block device the number
of pages to send with each BIO.

 - "logfs: maintain the ordering of meta-inode destruction"

LogFS maintains file system meta-data in special inodes. These
inodes are releated to each other, therefore they must be
destroyed in a proper order.

 - "logfs: initialize the number of iovecs in bio"

LogFS used to panic when it was created on an encrypted LVM
volume. The patch fixes the problem by properly initializing
the BIO.

Plus a couple more:
 - logfs: create a pagecache page if it is not present
 - logfs: destroy the reserved inodes while unmounting

* tag 'for-linus' of git://github.com/prasad-joshi/logfs_upstream:
  logfs: query block device for number of pages to send with bio
  logfs: maintain the ordering of meta-inode destruction
  logfs: create a pagecache page if it is not present
  logfs: initialize the number of iovecs in bio
  logfs: destroy the reserved inodes while unmounting

12 years agoMerge tag 'fixes-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sun, 26 Aug 2012 00:33:33 +0000 (17:33 -0700)]
Merge tag 'fixes-3.6-rc3' of git://git./linux/kernel/git/arm/arm-soc

Pull arm-soc fixes from Arnd Bergmann:
 "Bug fixes for various ARM platforms.  About half of these are for OMAP
  and submitted before but did not make it into v3.6-rc2."

* tag 'fixes-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (39 commits)
  ARM: ux500: don't select LEDS_GPIO for snowball
  ARM: imx: build i.MX6 functions only when needed
  ARM: imx: select CPU_FREQ_TABLE when needed
  ARM: imx: fix ksz9021rn_phy_fixup
  ARM: imx: build pm-imx5 code only when PM is enabled
  ARM: omap: allow building omap44xx without SMP
  ARM: dts: imx51-babbage: fix esdhc cd/wp properties
  ARM: imx6: spin the cpu until hardware takes it down
  ARM: ux500: Ensure probing of Audio devices when Device Tree is enabled
  ARM: ux500: Fix merge error, no matching driver name for 'snd_soc_u8500'
  ARM i.MX6q: Add virtual 1/3.5 dividers in the LDB clock path
  ARM: Kirkwood: fix Makefile.boot
  ARM: Kirkwood: Fix iconnect leds
  ARM: Orion: Set eth packet size csum offload limit
  ARM: mv78xx0: fix win_cfg_base prototype
  ARM: OMAP: dmtimers: Fix locking issue in omap_dm_timer_request*()
  ARM: mmp: fix potential NULL dereference
  ARM: OMAP4: Register the OPP table only for 4430 device
  cpufreq: OMAP: Handle missing frequency table on SMP systems
  ARM: OMAP4: sleep: Save the complete used register stack frame
  ...

12 years agoMerge tag 'stable/for-linus-3.6-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 26 Aug 2012 00:31:59 +0000 (17:31 -0700)]
Merge tag 'stable/for-linus-3.6-rc3-tag' of git://git./linux/kernel/git/konrad/xen

Pull three xen bug-fixes from Konrad Rzeszutek Wilk:
 - Revert the kexec fix which caused on non-kexec shutdowns a race.
 - Reuse existing P2M leafs - instead of requiring to allocate a large
   area of bootup virtual address estate.
 - Fix a one-off error when adding PFNs for balloon pages.

* tag 'stable/for-linus-3.6-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/setup: Fix one-off error when adding for-balloon PFNs to the P2M.
  xen/p2m: Reuse existing P2M leafs if they are filled with 1:1 PFNs or INVALID.
  Revert "xen PVonHVM: move shared_info to MMIO before kexec"

12 years agoMerge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
Linus Torvalds [Sun, 26 Aug 2012 00:30:18 +0000 (17:30 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

Pull powerpc fixes from Benjamin Herrenschmidt:
 "I meant to sent that earlier but got swamped with other things, so
  here are some powerpc fixes for 3.6.  A few regression fixes and some
  bug fixes that I deemed should still make it.

  There's a FSL update from Kumar with a bunch of defconfig updates
  along with a few embedded fixes.

  I also reverted my g5_defconfig update that I merged earlier as it was
  completely busted, not too sure what happened there, I'll do a new one
  later."

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  Revert "powerpc: Update g5_defconfig"
  powerpc/perf: Use pmc_overflow() to detect rolled back events
  powerpc: Fix VMX in interrupt check in POWER7 copy loops
  powerpc: POWER7 copy_to_user/copy_from_user patch applied twice
  powerpc: Fix personality handling in ppc64_personality()
  powerpc/dma-iommu: Fix IOMMU window check
  powerpc: Remove unnecessary ifdefs
  powerpc/kgdb: Restore current_thread_info properly
  powerpc/kgdb: Bail out of KGDB when we've been triggered
  powerpc/kgdb: Do not set kgdb_single_step on ppc
  powerpc/mpic_msgr: Add missing includes
  powerpc: Fix null pointer deref in perf hardware breakpoints
  powerpc: Fixup whitespace in xmon
  powerpc: Fix xmon dl command for new printk implementation
  powerpc/fsl: fix "Failed to mount /dev: No such device" errors
  powerpc/fsl: update defconfigs
  booke/wdt: some ioctls do not return values properly
  powerpc/p4080ds: dts - add usb controller version info and port0
  powerpc/85xx: mpc85xx_defconfig - add VIA PATA support for MPC85xxCDS
  powerpc/fsl-pci: Only scan PCI bus if configured as a host

12 years agoMerge git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Sun, 26 Aug 2012 00:27:17 +0000 (17:27 -0700)]
Merge git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Marcelo Tosatti.

* git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86 emulator: use stack size attribute to mask rsp in stack ops
  KVM: MMU: Fix mmu_shrink() so that it can free mmu pages as intended
  ppc: e500_tlb memset clears nothing
  KVM: PPC: Add cache flush on page map
  KVM: PPC: Book3S HV: Fix incorrect branch in H_CEDE code
  KVM: x86: update KVM_SAVE_MSRS_BEGIN to correct value

12 years agoMerge tag 'for-linus-v3.6-rc4' of git://oss.sgi.com/xfs/xfs
Linus Torvalds [Sat, 25 Aug 2012 18:47:06 +0000 (11:47 -0700)]
Merge tag 'for-linus-v3.6-rc4' of git://oss.sgi.com/xfs/xfs

Pull xfs bugfixes from Ben Myers:
 - fix uninitialised variable in xfs_rtbuf_get()
 - unlock the AGI buffer when looping in xfs_dialloc
 - check for possible overflow in xfs_ioc_trim

* tag 'for-linus-v3.6-rc4' of git://oss.sgi.com/xfs/xfs:
  xfs: check for possible overflow in xfs_ioc_trim
  xfs: unlock the AGI buffer when looping in xfs_dialloc
  xfs: fix uninitialised variable in xfs_rtbuf_get()

12 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Sat, 25 Aug 2012 18:45:04 +0000 (11:45 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fixes from Ralf Baechle:
 "Random fixes across the MIPS tree.  The two hotspots are several bugs
  in the module loader and the ath79 SOC support; also noteworthy is the
  restructuring of the code to synchronize CPU timers across CPUs on
  startup; the old code recently ceased to work due to unrelated
  changes.

  All except one of these patches have sat for a significant time in
  linux-next for testing."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: pci-ar724x: avoid data bus error due to a missing PCIe module
  MIPS: Malta: Delete duplicate PCI fixup.
  MIPS: ath79: don't hardcode the unavailability of the DSP ASE
  MIPS: Synchronize MIPS count one CPU at a time
  MIPS: BCM63xx: Fix SPI message control register handling for BCM6338/6348.
  MIPS: Module: Deal with malformed HI16/LO16 relocation sequences.
  MIPS: Fix race condition in module relocation code.
  MIPS: Fix memory leak in error path of HI16/LO16 relocation handling.
  MIPS: MTX-1: Add udelay to mtx1_pci_idsel
  MIPS: ath79: select HAVE_CLK
  MIPS: ath79: Use correct IRQ number for the OHCI controller on AR7240
  MIPS: ath79: Fix number of GPIO lines for AR724[12]
  MIPS: Octeon: Fix broken interrupt controller code.

12 years agoMerge branch 'for-3.6' of git://linux-nfs.org/~bfields/linux
Linus Torvalds [Sat, 25 Aug 2012 18:43:41 +0000 (11:43 -0700)]
Merge branch 'for-3.6' of git://linux-nfs.org/~bfields/linux

Pull nfsd bugfixes from J. Bruce Fields:
 "Particular thanks to Michael Tokarev, Malahal Naineni, and Jamie
  Heilman for their testing and debugging help."

* 'for-3.6' of git://linux-nfs.org/~bfields/linux:
  svcrpc: fix svc_xprt_enqueue/svc_recv busy-looping
  svcrpc: sends on closed socket should stop immediately
  svcrpc: fix BUG() in svc_tcp_clear_pages
  nfsd4: fix security flavor of NFSv4.0 callback

12 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Sat, 25 Aug 2012 18:36:43 +0000 (11:36 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block-related fixes from Jens Axboe:

 - Improvements to the buffered and direct write IO plugging from
   Fengguang.

 - Abstract out the mapping of a bio in a request, and use that to
   provide a blk_bio_map_sg() helper.  Useful for mapping just a bio
   instead of a full request.

 - Regression fix from Hugh, fixing up a patch that went into the
   previous release cycle (and marked stable, too) attempting to prevent
   a loop in __getblk_slow().

 - Updates to discard requests, fixing up the sizing and how we align
   them.  Also a change to disallow merging of discard requests, since
   that doesn't really work properly yet.

 - A few drbd fixes.

 - Documentation updates.

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: replace __getblk_slow misfix by grow_dev_page fix
  drbd: Write all pages of the bitmap after an online resize
  drbd: Finish requests that completed while IO was frozen
  drbd: fix drbd wire compatibility for empty flushes
  Documentation: update tunable options in block/cfq-iosched.txt
  Documentation: update tunable options in block/cfq-iosched.txt
  Documentation: update missing index files in block/00-INDEX
  block: move down direct IO plugging
  block: remove plugging at buffered write time
  block: disable discard request merge temporarily
  bio: Fix potential memory leak in bio_find_or_create_slab()
  block: Don't use static to define "void *p" in show_partition_start()
  block: Add blk_bio_map_sg() helper
  block: Introduce __blk_segment_map_sg() helper
  fs/block-dev.c:fix performance regression in O_DIRECT writes to md block devices
  block: split discard into aligned requests
  block: reorganize rounding of max_discard_sectors

12 years agoMerge tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik...
Linus Torvalds [Sat, 25 Aug 2012 17:28:19 +0000 (10:28 -0700)]
Merge tag 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

Pull libata fixes from Jeff Garzik:
 - libata-acpi regression fix
 - additional or corrected drive quirks for ata_blacklist
 - Kconfig text tweaking
 - new PCI IDs
 - pata_atiixp: quirk for MSI motherboard
 - export ahci_dev_classify for an ahci_platform driver

* tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: Add a space to " 2GB ATA Flash Disk" DMA blacklist entry
  [libata] new quirk, lift bridge limits for Buffalo DriveStation Quattro
  [libata] Kconfig: Elaborate that SFF is meant for legacy and PATA stuff
  [libata] acpi: call ata_acpi_gtm during ata port init time
  ata_piix: Add Device IDs for Intel Lynx Point-LP PCH
  ahci: Add Device IDs for Intel Lynx Point-LP PCH
  pata_atiixp: override cable detection on MSI E350DM-E33
  ahci: un-staticize ahci_dev_classify

12 years agolibata: Add a space to " 2GB ATA Flash Disk" DMA blacklist entry
Prarit Bhargava [Thu, 23 Aug 2012 19:11:52 +0000 (15:11 -0400)]
libata: Add a space to " 2GB ATA Flash Disk" DMA blacklist entry

commit d70e551c8e1ecb6f20422f8db6bfe6a0049edcb8, Add " 2GB ATA Flash
Disk"/"ADMA428M" to DMA blacklist, should have added a space before 2GB.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
12 years agoMerge branch 'sfc-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/bwh/sfc
David S. Miller [Fri, 24 Aug 2012 20:23:31 +0000 (16:23 -0400)]
Merge branch 'sfc-3.6' of git://git./linux/kernel/git/bwh/sfc

Ben Hutchings says:

====================
Simple fix for a braino.  Please also queue this for the 3.4 and 3.5
stable series.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'fixes-for-3.6' of git://gitorious.org/linux-can/linux-can
David S. Miller [Fri, 24 Aug 2012 19:21:07 +0000 (15:21 -0400)]
Merge branch 'fixes-for-3.6' of git://gitorious.org/linux-can/linux-can

Marc Kleine-Budde says:

====================
here are two fixes for the v3.6 release cycle. Alexey Khoroshilov submitted a
fix for a memory leak in the softing driver (in softing_load_fw()) in case a
krealloc() fails. Sven Schmitt fixed the misuse of the IRQF_SHARED flag in the
irq resouce of the sja1000 platform driver, now the correct flag is used. There
are no mainline users of this feature which need to be converted.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville...
David S. Miller [Fri, 24 Aug 2012 19:15:04 +0000 (15:15 -0400)]
Merge branch 'for-davem' of git://git./linux/kernel/git/linville/wireless

John W. Linville says:

====================
This batch of fixes is intended for 3.6...

Johannes Berg gives us a pair of iwlwifi fixes.  One corrects some
improperly defined ifdefs that lead to crashes and BUG_ONs.  The other
prevents attempts to read SRAM for devices that aren't actually started.

Julia Lawall provides an ipw2100 fix to properly set the return code
from a function call before testing it! :-)

Thomas Huehn corrects the improper use of a constant related to a power
setting in ath5k.

Thomas Pedersen offers a mac80211 fix to properly handle destination
addresses of unicast frames passing though a mesh gate.

Vladimir Zapolskiy provides a brcmsmac fix to properly mark the
interface state when the device goes down.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agotcp: fix cwnd reduction for non-sack recovery
Yuchung Cheng [Thu, 23 Aug 2012 07:05:17 +0000 (07:05 +0000)]
tcp: fix cwnd reduction for non-sack recovery

The cwnd reduction in fast recovery is based on the number of packets
newly delivered per ACK. For non-sack connections every DUPACK
signifies a packet has been delivered, but the sender mistakenly
skips counting them for cwnd reduction.

The fix is to compute newly_acked_sacked after DUPACKs are accounted
in sacked_out for non-sack connections.

Signed-off-by: Yuchung Cheng <ycheng@google.com>
Acked-by: Nandita Dukkipati <nanditad@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agonetlink: fix possible spoofing from non-root processes
Pablo Neira Ayuso [Thu, 23 Aug 2012 02:09:11 +0000 (02:09 +0000)]
netlink: fix possible spoofing from non-root processes

Non-root user-space processes can send Netlink messages to other
processes that are well-known for being subscribed to Netlink
asynchronous notifications. This allows ilegitimate non-root
process to send forged messages to Netlink subscribers.

The userspace process usually verifies the legitimate origin in
two ways:

a) Socket credentials. If UID != 0, then the message comes from
   some ilegitimate process and the message needs to be dropped.

b) Netlink portID. In general, portID == 0 means that the origin
   of the messages comes from the kernel. Thus, discarding any
   message not coming from the kernel.

However, ctnetlink sets the portID in event messages that has
been triggered by some user-space process, eg. conntrack utility.
So other processes subscribed to ctnetlink events, eg. conntrackd,
know that the event was triggered by some user-space action.

Neither of the two ways to discard ilegitimate messages coming
from non-root processes can help for ctnetlink.

This patch adds capability validation in case that dst_pid is set
in netlink_sendmsg(). This approach is aggressive since existing
applications using any Netlink bus to deliver messages between
two user-space processes will break. Note that the exception is
NETLINK_USERSOCK, since it is reserved for netlink-to-netlink
userspace communication.

Still, if anyone wants that his Netlink bus allows netlink-to-netlink
userspace, then they can set NL_NONROOT_SEND. However, by default,
I don't think it makes sense to allow to use NETLINK_ROUTE to
communicate two processes that are sending no matter what information
that is not related to link/neighbouring/routing. They should be using
NETLINK_USERSOCK instead for that.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agostmmac: add header inclusion protection
Rayagond Kokatanur [Wed, 22 Aug 2012 21:28:18 +0000 (21:28 +0000)]
stmmac: add header inclusion protection

This patch adds "#ifndef __<header>_H" for protecting header from double
inclusion.

Signed-off-by: Rayagond Kokatanur <rayagond@vayavyalabs.com>
Hacked-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoipv4: take rt_uncached_lock only if needed
Eric Dumazet [Fri, 24 Aug 2012 05:40:47 +0000 (05:40 +0000)]
ipv4: take rt_uncached_lock only if needed

Multicast traffic allocates dst with DST_NOCACHE, but dst is
not inserted into rt_uncached_list.

This slowdown multicast workloads on SMP because rt_uncached_lock is
contended.

Change the test before taking the lock to actually check the dst
was inserted into rt_uncached_list.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agoMerge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
John W. Linville [Fri, 24 Aug 2012 15:16:58 +0000 (11:16 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/linville/wireless into for-davem

12 years agoi915: Quirk no_lvds on Gigabyte GA-D525TUD ITX motherboard
Calvin Walton [Fri, 24 Aug 2012 11:56:31 +0000 (07:56 -0400)]
i915: Quirk no_lvds on Gigabyte GA-D525TUD ITX motherboard

This board is incorrectly detected as having an LVDS connector,
resulting in the VGA output (the only available output on the board)
showing the console only in the top-left 1024x768 pixels, and an extra
LVDS connector appearing in X.

It's a desktop Mini-ITX board using an Atom D525 CPU with an NM10
chipset.

I've had this board for about a year, but this is the first time I
noticed the issue because I've been running it headless for most of its
life.

Signed-off-by: Calvin Walton <calvin.walton@kepstin.ca>
12 years agoRevert "powerpc: Update g5_defconfig"
Benjamin Herrenschmidt [Fri, 24 Aug 2012 10:55:55 +0000 (20:55 +1000)]
Revert "powerpc: Update g5_defconfig"

This reverts commit b1acf1bb544cf28c1f4be0a45620fa899c74b7e9.

Something went horribly wrong when I did savedefconfig, not sure what,
but what's in there is busted so let's revert it.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/perf: Use pmc_overflow() to detect rolled back events
Sukadev Bhattiprolu [Tue, 7 Aug 2012 15:07:19 +0000 (15:07 +0000)]
powerpc/perf: Use pmc_overflow() to detect rolled back events

For certain speculative events on Power7, 'perf stat' reports far higher
event count than 'perf record' for the same event.

As described in following commit, a performance monitor exception is raised
even when the the performance events are rolled back.

        commit 0837e3242c73566fc1c0196b4ec61779c25ffc93
        Author: Anton Blanchard <anton@samba.org>
        Date:   Wed Mar 9 14:38:42 2011 +1100

perf_event_interrupt() records an event only when an overflow occurs. But
this check for overflow is a simple 'if (val < 0)'.

Because the events are rolled back, this check for overflow fails and the
event is not recorded. perf_event_interrupt() later uses pmc_overflow() to
detect the overflow and resets the counters and the events are lost completely.

To properly detect the overflow of rolled back events, use pmc_overflow()
even when recording events.

To reproduce:
        $ cat strcpy.c
        #include <stdio.h>
        #include <string.h>
        main()
        {
                char buf[256];

                alarm(5);
                while(1)
                        strcpy(buf, "string1");
        }

        $ perf record -e r20014 ./strcpy
        $ perf report -n > report.1
        $ perf stat -e r20014 > report.2
        # Compare report.1 and report.2

Reported-by: Maynard Johnson <mpjohn@us.ibm.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix VMX in interrupt check in POWER7 copy loops
Anton Blanchard [Tue, 7 Aug 2012 17:51:41 +0000 (17:51 +0000)]
powerpc: Fix VMX in interrupt check in POWER7 copy loops

The enhanced prefetch hint patches corrupt the condition register
that was used to check if we are in interrupt. Fix this by using cr1.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: POWER7 copy_to_user/copy_from_user patch applied twice
Anton Blanchard [Tue, 7 Aug 2012 17:50:46 +0000 (17:50 +0000)]
powerpc: POWER7 copy_to_user/copy_from_user patch applied twice

"powerpc: Use enhanced touch instructions in POWER7
copy_to_user/copy_from_user" was applied twice. Remove one.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix personality handling in ppc64_personality()
Jiri Kosina [Mon, 13 Aug 2012 03:18:28 +0000 (03:18 +0000)]
powerpc: Fix personality handling in ppc64_personality()

Directly comparing current->personality against PER_LINUX32 doesn't work
in cases when any of the personality flags stored in the top three bytes
are used.

Directly forcefully setting personality to PER_LINUX32 or PER_LINUX
discards any flags stored in the top three bytes

Use personality() macro to compare only PER_MASK bytes and make sure that
we are setting only the bits that should be set, instead of overwriting
the whole value.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/dma-iommu: Fix IOMMU window check
Aaro Koskinen [Sat, 18 Aug 2012 07:34:15 +0000 (07:34 +0000)]
powerpc/dma-iommu: Fix IOMMU window check

Checking for device mask to cover the whole IOMMU table is too strict.
IOMMU allocators should handle mask constraint properly for each
allocation.

The patch enables to use old AirPort Extreme cards on PowerMacs with
more than 1GB of memory; without the patch the driver init fails with:

  b43-pci-bridge 0001:01:01.0: Warning: IOMMU window too big for device mask
  b43-pci-bridge 0001:01:01.0: mask: 0x3fffffff, table end: 0x80000000
  b43-phy0 ERROR: The machine/kernel does not support the required 30-bit DMA mask

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Remove unnecessary ifdefs
Michael Neuling [Tue, 21 Aug 2012 21:22:22 +0000 (21:22 +0000)]
powerpc: Remove unnecessary ifdefs

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/kgdb: Restore current_thread_info properly
Tiejun Chen [Wed, 22 Aug 2012 16:10:20 +0000 (16:10 +0000)]
powerpc/kgdb: Restore current_thread_info properly

For powerpc BooKE and e200, singlestep is handled on the critical/dbg
exception stack. This causes current_thread_info() to fail for kgdb
internal, so previously We work around this issue by copying
the thread_info from the kernel stack before calling kgdb_handle_exception,
and copying it back afterwards.

But actually we don't do this properly. We should backup current_thread_info
then restore that when exit.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/kgdb: Bail out of KGDB when we've been triggered
Tiejun Chen [Wed, 22 Aug 2012 16:10:19 +0000 (16:10 +0000)]
powerpc/kgdb: Bail out of KGDB when we've been triggered

We need to skip a breakpoint exception when it occurs after
a breakpoint has already been removed.

Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/kgdb: Do not set kgdb_single_step on ppc
Tiejun Chen [Wed, 22 Aug 2012 16:10:18 +0000 (16:10 +0000)]
powerpc/kgdb: Do not set kgdb_single_step on ppc

The kgdb_single_step flag has the possibility to indefinitely
hang the system on an SMP system.

The x86 arch have the same problem, and that problem was fixed by
commit 8097551d9ab9b9e3630(kgdb,x86: do not set kgdb_single_step
on x86). This patch does the same behaviors as x86's patch.

Signed-off-by: Dongdong Deng <dongdong.deng@windriver.com>
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc/mpic_msgr: Add missing includes
Scott Wood [Wed, 22 Aug 2012 15:35:47 +0000 (15:35 +0000)]
powerpc/mpic_msgr: Add missing includes

Add several #includes that mpic_msgr relies on being pulled implicitly,
which only happens on certain configs.

Signed-off-by: Scott Wood <scottwood@freescale.com>
Cc: Meador Inge <meador_inge@mentor.com>
Cc: Jia Hongtao <B38951@freescale.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix null pointer deref in perf hardware breakpoints
Michael Neuling [Wed, 22 Aug 2012 20:30:43 +0000 (20:30 +0000)]
powerpc: Fix null pointer deref in perf hardware breakpoints

Currently if you are doing a global perf recording with hardware
breakpoints (ie perf record -e mem:0xdeadbeef -a), you can oops with:

  Faulting instruction address: 0xc000000000738890
  cpu 0xc: Vector: 300 (Data Access) at [c0000003f76af8d0]
      pc: c000000000738890: .hw_breakpoint_handler+0xa0/0x1e0
      lr: c000000000738830: .hw_breakpoint_handler+0x40/0x1e0
      sp: c0000003f76afb50
     msr: 8000000000001032
     dar: 6f0
   dsisr: 42000000
    current = 0xc0000003f765ac00
    paca    = 0xc00000000f262a00   softe: 0        irq_happened: 0x01
    pid   = 6810, comm = loop-read
  enter ? for help
  [c0000003f76afbe0c00000000073cd04 .notifier_call_chain.isra.0+0x84/0xe0
  [c0000003f76afc80c00000000073cdbc .notify_die+0x3c/0x60
  [c0000003f76afd20c0000000000139f0 .do_dabr+0x40/0xf0
  [c0000003f76afe30c000000000005a9c handle_dabr_fault+0x14/0x48
  --- Exception: 300 (Data Access) at 0000000010000480
  SP (ff8679e0) is in userspace

This is because we don't check to see if the break point is associated
with task before we deference the task_struct pointer.

This changes the update to use current.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fixup whitespace in xmon
Michael Ellerman [Thu, 23 Aug 2012 22:09:13 +0000 (22:09 +0000)]
powerpc: Fixup whitespace in xmon

There are a few whitespace goolies in xmon.c, some of them appear to
be my fault. Fix them all in one go.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agopowerpc: Fix xmon dl command for new printk implementation
Michael Ellerman [Thu, 23 Aug 2012 22:09:12 +0000 (22:09 +0000)]
powerpc: Fix xmon dl command for new printk implementation

Since the printk internals were reworked the xmon 'dl' command which
dumps the content of __log_buf has stopped working.

It is now a structured buffer, so just dumping it doesn't really work.

Use the helpers added for kgdb to print out the content.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
12 years agodrm/i915: Use the correct size of the GTT for placing the per-process entries
Chris Wilson [Fri, 24 Aug 2012 08:12:22 +0000 (09:12 +0100)]
drm/i915: Use the correct size of the GTT for placing the per-process entries

The current layout is to place the per-process tables at the end of the
GTT. However, this is currently using a hardcoded maximum size for the GTT
and not taking in account limitations imposed by the BIOS. Use the value
for the total number of entries allocated in the table as provided by
the configuration registers.

Reported-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ben Widawsky <ben@bwidawsk.net>
Cc: Matthew Garret <mjg@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
12 years agocan: sja1000_platform: fix wrong flag IRQF_SHARED for interrupt sharing
Sven Schmitt [Thu, 9 Aug 2012 12:46:34 +0000 (14:46 +0200)]
can: sja1000_platform: fix wrong flag IRQF_SHARED for interrupt sharing

The sja1000 platform driver wrongly assumes that a shared IRQ is indicated
with the IRQF_SHARED flag in irq resource flags. This patch changes the
driver to handle the correct flag IORESOURCE_IRQ_SHAREABLE instead.

There are no mainline users of the platform driver which wrongly make use
of IRQF_SHARED.

Signed-off-by: Sven Schmitt <sven.schmitt@volkswagen.de>
Acked-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
12 years agocan: softing: Fix potential memory leak in softing_load_fw()
Alexey Khoroshilov [Wed, 8 Aug 2012 15:15:01 +0000 (19:15 +0400)]
can: softing: Fix potential memory leak in softing_load_fw()

Do not leak memory by updating pointer with potentially NULL realloc return value.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Fri, 24 Aug 2012 04:58:04 +0000 (21:58 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

Pull crypto fixes from Herbert Xu:
 "This push fixes a build error on 32-bit archs in the hifn driver as
  well as a potential deadlock in the caam driver."

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: caam - fix possible deadlock condition
  crypto: hifn_795x - fix 64bit division and undefined __divdi3 on 32bit archs

12 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Linus Torvalds [Fri, 24 Aug 2012 04:56:22 +0000 (21:56 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/jack/linux-fs

Pull UDF, ext3 & reiserfs fixes from Jan Kara:
 "A couple of fixes (udf, reiserfs, ext3) that accumulated over my
  vacation."

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
  udf: fix retun value on error path in udf_load_logicalvol
  jbd: don't write superblock when unmounting an ro filesystem
  reiserfs: fix deadlocks with quotas
  quota: Move down dqptr_sem read after initializing default warn[] type at __dquot_alloc_space().
  UDF: During mount free lvid_bh before rescanning with different blocksize
  udf: fix udf_setsize() for file data in ICB

12 years agoMerge tag 'upstream-3.6-rc3' of git://git.infradead.org/linux-ubifs
Linus Torvalds [Fri, 24 Aug 2012 04:50:40 +0000 (21:50 -0700)]
Merge tag 'upstream-3.6-rc3' of git://git.infradead.org/linux-ubifs

Pull UBIFS fixes from Artem Bityutskiy:
 - Fix crash on error which prevents emulated power-cut testing.
 - Fix log reply regression introduced in 3.6-rc1.
 - Fix UBIFS complaints about too small debug buffer size which.
 - Fix error message spelling, and remove incorrect commentary.

* tag 'upstream-3.6-rc3' of git://git.infradead.org/linux-ubifs:
  UBIFS: fix error messages spelling
  UBIFS: fix complaints about too small debug buffer size
  UBIFS: fix replay regression
  UBIFS: fix crash on error path
  UBIFS: remove stale commentary

12 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
Linus Torvalds [Fri, 24 Aug 2012 04:49:56 +0000 (21:49 -0700)]
Merge git://git./linux/kernel/git/davem/ide

Pull IDE power management bugfix from David S. Miller.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
  ide: fix generic_ide_suspend/resume Oops

12 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 24 Aug 2012 04:48:41 +0000 (21:48 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "This tree contains misc fixlets: a perf script python binding fix, a
  uprobes fix and a syscall tracing fix."

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf tools: Add missing files to build the python binding
  uprobes: Fix mmap_region()'s mm->mm_rb corruption if uprobe_mmap() fails
  tracing/syscalls: Fix perf syscall tracing when syscall_nr == -1

12 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 24 Aug 2012 04:47:54 +0000 (21:47 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "This tree contains assorted fixlets: an alternatives patching crash
  fix, an irq migration/hotplug interaction fix, a fix for large AMD
  microcode images and a comment fixlet."

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, microcode, AMD: Fix broken ucode patch size check
  x86/alternatives: Fix p6 nops on non-modular kernels
  x86/fixup_irq: Use cpu_online_mask instead of cpu_all_mask
  x86/spinlocks: Fix comment in spinlock.h

12 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 24 Aug 2012 04:46:57 +0000 (21:46 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fixes from Thomas Gleixner:
 "Mostly small fixes for the fallout of the timekeeping overhaul in 3.6
  along with stable fixes to address an accumulation problem and missing
  sanity checks for RTC readouts and user space provided values."

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  time: Avoid making adjustments if we haven't accumulated anything
  time: Avoid potential shift overflow with large shift values
  time: Fix casting issue in timekeeping_forward_now
  time: Ensure we normalize the timekeeper in tk_xtime_add
  time: Improve sanity checking of timekeeping inputs

12 years agoMerge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Linus Torvalds [Fri, 24 Aug 2012 04:45:54 +0000 (21:45 -0700)]
Merge branch 'upstream-fixes' of git://git./linux/kernel/git/jikos/hid

Pull HID fix from Jiri Kosina:
 "Fix for one particular device not being properly claimed by
  hid-multitouch driver"

* 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: Remove QUANTA from special drivers list

12 years agosfc: Fix reporting of IPv4 full filters through ethtool
Ben Hutchings [Wed, 15 Aug 2012 17:09:15 +0000 (18:09 +0100)]
sfc: Fix reporting of IPv4 full filters through ethtool

ETHTOOL_GRXCLSRULE returns filters for a TCP/IPv4 or UDP/IPv4 4-tuple
with source and destination swapped.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
12 years agodrm: Check for invalid cursor flags
Jakob Bornecrantz [Thu, 16 Aug 2012 08:29:03 +0000 (08:29 +0000)]
drm: Check for invalid cursor flags

Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agodrm: Initialize object type when using DRM_MODE() macro
Ville Syrjälä [Tue, 14 Aug 2012 10:53:38 +0000 (10:53 +0000)]
drm: Initialize object type when using DRM_MODE() macro

DRM_MODE() macro doesn't initialize the type of the base drm object.
When a copy is made of the mode, the object type is overwritten with
zero, and the the object can no longer be found by
drm_mode_object_find() due to the type check failing.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
12 years agoxfs: check for possible overflow in xfs_ioc_trim
Tomas Racek [Tue, 14 Aug 2012 08:35:04 +0000 (10:35 +0200)]
xfs: check for possible overflow in xfs_ioc_trim

If range.start or range.minlen is bigger than filesystem size, return
invalid value error. This fixes possible overflow in BTOBB macro when
passed value was nearly ULLONG_MAX.

Signed-off-by: Tomas Racek <tracek@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
12 years agoxfs: unlock the AGI buffer when looping in xfs_dialloc
Christoph Hellwig [Tue, 7 Aug 2012 06:02:02 +0000 (02:02 -0400)]
xfs: unlock the AGI buffer when looping in xfs_dialloc

Also update some commens in the area to make the code easier to read.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
12 years agoxfs: fix uninitialised variable in xfs_rtbuf_get()
Dave Chinner [Tue, 31 Jul 2012 04:55:51 +0000 (14:55 +1000)]
xfs: fix uninitialised variable in xfs_rtbuf_get()

Results in this assert failure in generic/090:

XFS: Assertion failed: *nmap >= 1, file: fs/xfs/xfs_bmap.c, line: 4363
.....
Call Trace:
 [<ffffffff814680db>] xfs_bmapi_read+0x6b/0x370
 [<ffffffff814b64b2>] xfs_rtbuf_get+0x42/0x130
 [<ffffffff814b6f09>] xfs_rtget_summary+0x89/0x120
 [<ffffffff814b7bfe>] xfs_rtallocate_extent_size+0xce/0x340
 [<ffffffff814b89f0>] xfs_rtallocate_extent+0x240/0x290
 [<ffffffff81462c1a>] xfs_bmap_rtalloc+0x1ba/0x340
 [<ffffffff81463a65>] xfs_bmap_alloc+0x35/0x40
 [<ffffffff8146f111>] xfs_bmapi_allocate+0xf1/0x350
 [<ffffffff8146f9de>] xfs_bmapi_write+0x66e/0xa60
 [<ffffffff8144538a>] xfs_iomap_write_direct+0x22a/0x3f0
 [<ffffffff8143707b>] __xfs_get_blocks+0x38b/0x5d0
 [<ffffffff814372d4>] xfs_get_blocks_direct+0x14/0x20
 [<ffffffff811b0081>] do_blockdev_direct_IO+0xf71/0x1eb0
 [<ffffffff811b1015>] __blockdev_direct_IO+0x55/0x60
 [<ffffffff814355ca>] xfs_vm_direct_IO+0x11a/0x1e0
 [<ffffffff8112d617>] generic_file_direct_write+0xd7/0x1b0
 [<ffffffff8143e16c>] xfs_file_dio_aio_write+0x13c/0x320
 [<ffffffff8143e6f2>] xfs_file_aio_write+0x1c2/0x1d0
 [<ffffffff81174a07>] do_sync_write+0xa7/0xe0
 [<ffffffff81175288>] vfs_write+0xa8/0x160
 [<ffffffff81175702>] sys_pwrite64+0x92/0xb0
 [<ffffffff81b68f69>] system_call_fastpath+0x16/0x1b

Signed-off-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
12 years agoaf_packet: match_fanout_group() can be static
Fengguang Wu [Thu, 23 Aug 2012 11:51:21 +0000 (19:51 +0800)]
af_packet: match_fanout_group() can be static

cc: Eric Leblond <eric@regit.org>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
12 years agopowerpc/fsl: fix "Failed to mount /dev: No such device" errors
Kim Phillips [Wed, 22 Aug 2012 18:43:30 +0000 (13:43 -0500)]
powerpc/fsl: fix "Failed to mount /dev: No such device" errors

Yocto (Built by Poky 7.0) 1.2 root filesystems fail to boot,
at least over nfs, with:

Failed to mount /dev: No such device

Configuring DEVTMPFS fixes it.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agopowerpc/fsl: update defconfigs
Kim Phillips [Wed, 22 Aug 2012 18:43:24 +0000 (13:43 -0500)]
powerpc/fsl: update defconfigs

run make savedefconfig on fsl defconfigs.

Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
12 years agoMerge branch 'randconfig/mach' into fixes
Arnd Bergmann [Thu, 23 Aug 2012 15:30:54 +0000 (17:30 +0200)]
Merge branch 'randconfig/mach' into fixes

Small platform specific bug fixes for problems found in randconfig builds.

* randconfig/mach:
  ARM: ux500: don't select LEDS_GPIO for snowball
  ARM: imx: build i.MX6 functions only when needed
  ARM: imx: select CPU_FREQ_TABLE when needed
  ARM: imx: fix ksz9021rn_phy_fixup
  ARM: imx: build pm-imx5 code only when PM is enabled
  ARM: omap: allow building omap44xx without SMP

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoARM: ux500: don't select LEDS_GPIO for snowball
Arnd Bergmann [Wed, 15 Aug 2012 20:34:48 +0000 (20:34 +0000)]
ARM: ux500: don't select LEDS_GPIO for snowball

Using 'select' in Kconfig is hard, a platform cannot just
enable a driver without also making sure that its subsystem
is there. Also, there is no actual code dependency between
the platform and the gpio leds driver.

Without this patch, building without LEDS_CLASS esults in:

drivers/built-in.o: In function `create_gpio_led.part.2':
governor_userspace.c:(.devinit.text+0x5a58): undefined reference to `led_classdev_register'
drivers/built-in.o: In function `gpio_led_remove':
governor_userspace.c:(.devexit.text+0x6b8): undefined reference to `led_classdev_unregister'

This reverts 8733f53c6 "ARM: ux500: Kconfig: Compile in leds-gpio
support for Snowball" that introduced the regression and did not
provide a helpful explanation.

In order to leave the GPIO LED code still present in normal
builds, this also enables the symbol in u8500_defconfig, in addition
to the other LED drivers that are already selected there.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Lee Jones <lee.jones@linaro.org>
12 years agoARM: imx: build i.MX6 functions only when needed
Arnd Bergmann [Fri, 17 Aug 2012 00:16:08 +0000 (00:16 +0000)]
ARM: imx: build i.MX6 functions only when needed

The head-v7.S contains a call to the generic cpu_suspend function,
which is only available when selected by the i.MX6 code. As
pointed out by Shawn Guo, i.MX5 does not actually use any
functions defined in head-v7.S. It is also needed only for
the i.MX6 power management code and for the SMP code, so
we can restrict building this file to situations in which
at least one of those two is present.

Finally, other platforms with a similar file call it headsmp.S,
so we can rename it to the same for consistency.

Without this patch, building imx5 standalone results in:

arch/arm/mach-imx/built-in.o: In function `v7_cpu_resume':
arch/arm/mach-imx/head-v7.S:104: undefined reference to `cpu_resume'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Eric Miao <eric.miao@linaro.org>
Cc: stable@vger.kernel.org
12 years agoARM: imx: select CPU_FREQ_TABLE when needed
Arnd Bergmann [Thu, 16 Aug 2012 10:40:40 +0000 (10:40 +0000)]
ARM: imx: select CPU_FREQ_TABLE when needed

The i.MX cpufreq implementation uses the CPU_FREQ_TABLE helpers,
so it needs to select that code to be built. This problem has
apparently existed since the i.MX cpufreq code was first merged
in v2.6.37.

Building IMX without CPU_FREQ_TABLE results in:

arch/arm/plat-mxc/built-in.o: In function `mxc_cpufreq_exit':
arch/arm/plat-mxc/cpufreq.c:173: undefined reference to `cpufreq_frequency_table_put_attr'
arch/arm/plat-mxc/built-in.o: In function `mxc_set_target':
arch/arm/plat-mxc/cpufreq.c:84: undefined reference to `cpufreq_frequency_table_target'
arch/arm/plat-mxc/built-in.o: In function `mxc_verify_speed':
arch/arm/plat-mxc/cpufreq.c:65: undefined reference to `cpufreq_frequency_table_verify'
arch/arm/plat-mxc/built-in.o: In function `mxc_cpufreq_init':
arch/arm/plat-mxc/cpufreq.c:154: undefined reference to `cpufreq_frequency_table_cpuinfo'
arch/arm/plat-mxc/cpufreq.c:162: undefined reference to `cpufreq_frequency_table_get_attr'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Yong Shen <yong.shen@linaro.org>
Cc: stable@vger.kernel.org
12 years agoARM: imx: fix ksz9021rn_phy_fixup
Arnd Bergmann [Thu, 16 Aug 2012 07:42:50 +0000 (07:42 +0000)]
ARM: imx: fix ksz9021rn_phy_fixup

The ksz9021rn_phy_fixup and mx6q_sabrelite functions try to
set up an ethernet phy if they can. They do check whether
phylib is enabled, but unfortunately the functions can only
be called from platform code if phylib is builtin, not
if it is a module

Without this patch, building with a modular phylib results in:

arch/arm/mach-imx/mach-imx6q.c: In function 'imx6q_sabrelite_init':
arch/arm/mach-imx/mach-imx6q.c:120:5: error: 'ksz9021rn_phy_fixup' undeclared (first use in this function)
arch/arm/mach-imx/mach-imx6q.c:120:5: note: each undeclared identifier is reported only once for each function it appears in

The bug was originally reported by Artem Bityutskiy but only
partially fixed in ef441806 "ARM: imx6q: register phy fixup only when
CONFIG_PHYLIB is enabled".

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Artem Bityutskiy <dedekind1@gmail.com>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
12 years agoARM: imx: build pm-imx5 code only when PM is enabled
Arnd Bergmann [Wed, 15 Aug 2012 21:56:39 +0000 (21:56 +0000)]
ARM: imx: build pm-imx5 code only when PM is enabled

This moves the imx5 pm code out of the list of unconditionally
compiled files for imx5, mirroring what we already do for imx6
and how it was done before the code was move from mach-mx5 to
mach-imx in v3.3.

Without this patch, building with CONFIG_PM disabled results in:

arch/arm/mach-imx/pm-imx5.c:202:116: error: redefinition of 'imx51_pm_init'
arch/arm/mach-imx/include/mach-imx/common.h:154:91: note: previous definition of 'imx51_pm_init' was here
arch/arm/mach-imx/pm-imx5.c:209:116: error: redefinition of 'imx53_pm_init'
arch/arm/mach-imx/include/mach-imx/common.h:155:91: note: previous definition of 'imx53_pm_init' was here

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@vger.kernel.org
12 years agoARM: omap: allow building omap44xx without SMP
Arnd Bergmann [Wed, 15 Aug 2012 20:51:54 +0000 (20:51 +0000)]
ARM: omap: allow building omap44xx without SMP

The new omap4 cpuidle implementation currently requires
ARCH_NEEDS_CPU_IDLE_COUPLED, which only works on SMP.

This patch makes it possible to build a non-SMP kernel
for that platform. This is not normally desired for
end-users but can be useful for testing.

Without this patch, building rand-0y2jSKT results in:

drivers/cpuidle/coupled.c: In function 'cpuidle_coupled_poke':
drivers/cpuidle/coupled.c:317:3: error: implicit declaration of function '__smp_call_function_single' [-Werror=implicit-function-declaration]

It's not clear if this patch is the best solution for
the problem at hand. I have made sure that we can now
build the kernel in all configurations, but that does
not mean it will actually work on an OMAP44xx.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
12 years agoMerge tag 'ux500-fixes-v3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Arnd Bergmann [Thu, 23 Aug 2012 15:06:15 +0000 (17:06 +0200)]
Merge tag 'ux500-fixes-v3.6-rc2' of git://git./linux/kernel/git/linusw/linux-stericsson into fixes

From Linus Walleij <linus.walleij@linaro.org>:
Here are two audio fixes for the ux500 found by Lee Jones.

* tag 'ux500-fixes-v3.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson:
  ARM: ux500: Ensure probing of Audio devices when Device Tree is enabled
  ARM: ux500: Fix merge error, no matching driver name for 'snd_soc_u8500'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoMerge branch 'v3.6-samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel...
Arnd Bergmann [Thu, 23 Aug 2012 15:03:49 +0000 (17:03 +0200)]
Merge branch 'v3.6-samsung-fixes-1' of git://git./linux/kernel/git/kgene/linux-samsung into fixes

From Kukjin Kim <kgene.kim@samsung.com>:

For HDMI, already HDMI support for EXYNOS in mainline kernel is broken
because its configuration moved to platform data but regarding platform
data didn't support yet. And others are for fix warnings.

* 'v3.6-samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: Set HDMI platform data in Origen board
  ARM: EXYNOS: Set HDMI platform data in SMDKV310
  ARM: SAMSUNG: Add API to set platform data for s5p-tv driver
  ARM: SAMSUNG: Set HDMI platform data for Exynos4x12 SoCs
  ARM: Samsung: Make uart_save static in pm.c file
  ARM: S3C24XX: Fix s3c2410_dma_enqueue parameters
  ARM: S3C24XX: Add missing DMACH_DT_PROP

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoMerge branch 'imx/fixes-for-3.6' of git://git.linaro.org/people/shawnguo/linux-2...
Arnd Bergmann [Thu, 23 Aug 2012 15:02:42 +0000 (17:02 +0200)]
Merge branch 'imx/fixes-for-3.6' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

* 'imx/fixes-for-3.6' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: dts: imx51-babbage: fix esdhc cd/wp properties
  ARM: imx6: spin the cpu until hardware takes it down
  ARM i.MX6q: Add virtual 1/3.5 dividers in the LDB clock path

Also updates to Linux 3.6-rc2

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
12 years agoxen/setup: Fix one-off error when adding for-balloon PFNs to the P2M.
Konrad Rzeszutek Wilk [Fri, 17 Aug 2012 20:43:28 +0000 (16:43 -0400)]
xen/setup: Fix one-off error when adding for-balloon PFNs to the P2M.

When we are finished with return PFNs to the hypervisor, then
populate it back, and also mark the E820 MMIO and E820 gaps
as IDENTITY_FRAMEs, we then call P2M to set areas that can
be used for ballooning. We were off by one, and ended up
over-writting a P2M entry that most likely was an IDENTITY_FRAME.
For example:

1-1 mapping on 40000->40200
1-1 mapping on bc558->bc5ac
1-1 mapping on bc5b4->bc8c5
1-1 mapping on bc8c6->bcb7c
1-1 mapping on bcd00->100000
Released 614 pages of unused memory
Set 277889 page(s) to 1-1 mapping
Populating 40200-40466 pfn range: 614 pages added

=> here we set from 40466 up to bc559 P2M tree to be
INVALID_P2M_ENTRY. We should have done it up to bc558.

The end result is that if anybody is trying to construct
a PTE for PFN bc558 they end up with ~PAGE_PRESENT.

CC: stable@vger.kernel.org
Reported-by-and-Tested-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
12 years agoMerge branch 'for-john' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211
John W. Linville [Thu, 23 Aug 2012 13:51:15 +0000 (09:51 -0400)]
Merge branch 'for-john' of git://git./linux/kernel/git/jberg/mac80211

12 years agoMIPS: pci-ar724x: avoid data bus error due to a missing PCIe module
Gabor Juhos [Thu, 23 Aug 2012 13:35:26 +0000 (15:35 +0200)]
MIPS: pci-ar724x: avoid data bus error due to a missing PCIe module

If the controller has no PCIe module attached, accessing of the device
configuration space causes a data bus error. Avoid this by checking the
status of the PCIe link in advance, and indicate an error if the link
is down.

Signed-off-by: Gabor Juhos <juhosg@openwrt.org>
Cc: stable@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/4293/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
12 years agoARM: dts: imx51-babbage: fix esdhc cd/wp properties
Shawn Guo [Wed, 22 Aug 2012 13:46:39 +0000 (21:46 +0800)]
ARM: dts: imx51-babbage: fix esdhc cd/wp properties

The binding doc and dts use properties "fsl,{cd,wp}-internal" while
esdhc driver uses "fsl,{cd,wp}-controller".  Fix binding doc and dts
to get them match driver code.

Reported-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: <stable@vger.kernel.org>
Acked-by: Chris Ball <cjb@laptop.org>
12 years agoARM: imx6: spin the cpu until hardware takes it down
Shawn Guo [Sat, 18 Aug 2012 06:27:32 +0000 (14:27 +0800)]
ARM: imx6: spin the cpu until hardware takes it down

Though commit 602bf40 (ARM: imx6: exit coherency when shutting down
a cpu) improves the stability of imx6q cpu hotplug a lot, there are
still hangs seen with a more stressful hotplug testing.

It's expected that once imx_enable_cpu(cpu, false) is called, the cpu
will be taken down by hardware immediately, and the code after that
will not get any chance to execute.  However, this is not always the
case from the testing.  The cpu could possibly be alive for a few
cycles before hardware actually takes it down.  So rather than letting
cpu execute some code that could cause a hang in these cycles, let's
make the cpu spin there and wait for hardware to take it down.

Cc: <stable@vger.kernel.org>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
12 years agoOMAPFB: fix framebuffer console colors
Grazvydas Ignotas [Tue, 21 Aug 2012 06:09:48 +0000 (09:09 +0300)]
OMAPFB: fix framebuffer console colors

omapfb does not currently set pseudo palette correctly for color depths
above 16bpp, making red text invisible, command like
  echo -e '\e[0;31mRED' > /dev/tty1
will display nothing on framebuffer console in 24bpp mode.
This is because temporary variable is declared incorrectly, fix it.

Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Cc: stable@vger.kernel.org # v3.x
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agoOMAPDSS: Fix SDI PLL locking
Tomi Valkeinen [Tue, 21 Aug 2012 06:09:47 +0000 (09:09 +0300)]
OMAPDSS: Fix SDI PLL locking

Commit f476ae9dab3234532d41d36beb4ba7be838fa786 (OMAPDSS: APPLY: Remove
DISPC writes to manager's lcd parameters in interface) broke the SDI
output, as it causes the SDI PLL locking to fail.

LCLK and PCLK divisors are located in shadow registers, and we normally
write them to DISPC registers when enabling the output.  However, SDI
uses pck-free as source clock for its PLL, and pck-free is affected by
the divisors. And as we need the PLL before enabling the output, we need
to write the divisors early.

It seems just writing to the DISPC register is enough, and we don't need
to care about the shadow register mechanism for pck-free. The exact
reason for this is unknown.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reported-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agovideo: mb862xxfb: prevent divide by zero bug
Dan Carpenter [Sat, 18 Aug 2012 15:55:41 +0000 (18:55 +0300)]
video: mb862xxfb: prevent divide by zero bug

Do a sanity check on these before using them as divisors.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Anatolij Gustschin <agust@denx.de>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agodrivers/video/auo_k190x.c: drop kfree of devm_kzalloc's data
Julia Lawall [Sat, 4 Aug 2012 12:00:30 +0000 (14:00 +0200)]
drivers/video/auo_k190x.c: drop kfree of devm_kzalloc's data

Using kfree to free data allocated with devm_kzalloc causes double frees.

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

// <smpl>
@@
expression x;
@@

x = devm_kzalloc(...)
...
?-kfree(x);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agofbcon: Fix bit_putcs() call to kmalloc(s, GFP_KERNEL)
Bruno Prémont [Mon, 30 Jul 2012 19:09:49 +0000 (21:09 +0200)]
fbcon: Fix bit_putcs() call to kmalloc(s, GFP_KERNEL)

Switch to kmalloc(,GFP_ATOMIC) in bit_putcs to fix below trace:

[    9.771812] BUG: sleeping function called from invalid context at /usr/src/linux-git/mm/slub.c:943
[    9.771814] in_atomic(): 1, irqs_disabled(): 1, pid: 1063, name: mount
[    9.771818] Pid: 1063, comm: mount Not tainted 3.5.0-jupiter-00003-g8d858b1-dirty #2
[    9.771819] Call Trace:
[    9.771838]  [<c104f79b>] __might_sleep+0xcb/0xe0
[    9.771844]  [<c10c00d4>] __kmalloc+0xb4/0x1c0
[    9.771851]  [<c1041d4a>] ? queue_work+0x1a/0x30
[    9.771854]  [<c1041dcf>] ? queue_delayed_work+0xf/0x30
[    9.771862]  [<c1205832>] ? bit_putcs+0xf2/0x3e0
[    9.771865]  [<c1041e01>] ? schedule_delayed_work+0x11/0x20
[    9.771868]  [<c1205832>] bit_putcs+0xf2/0x3e0
[    9.771875]  [<c12002b8>] ? get_color.clone.14+0x28/0x100
[    9.771878]  [<c1200d2f>] fbcon_putcs+0x11f/0x130
[    9.771882]  [<c1205740>] ? bit_clear+0xe0/0xe0
[    9.771885]  [<c1200f6d>] fbcon_redraw.clone.21+0x11d/0x160
[    9.771889]  [<c120383d>] fbcon_scroll+0x79d/0xe10
[    9.771892]  [<c12002b8>] ? get_color.clone.14+0x28/0x100
[    9.771897]  [<c124c0b4>] scrup+0x64/0xd0
[    9.771900]  [<c124c22b>] lf+0x2b/0x60
[    9.771903]  [<c124cc95>] vt_console_print+0x1d5/0x2f0
[    9.771907]  [<c124cac0>] ? register_vt_notifier+0x20/0x20
[    9.771913]  [<c102b335>] call_console_drivers.clone.5+0xa5/0xc0
[    9.771916]  [<c102c58e>] console_unlock+0x2fe/0x3c0
[    9.771920]  [<c102ca16>] vprintk_emit+0x2e6/0x300
[    9.771924]  [<c13f01ae>] printk+0x38/0x3a
[    9.771931]  [<c112e8fe>] reiserfs_remount+0x2ae/0x3e0
[    9.771934]  [<c112e650>] ? reiserfs_fill_super+0xb00/0xb00
[    9.771939]  [<c10ca0ab>] do_remount_sb+0xab/0x150
[    9.771943]  [<c1034476>] ? ns_capable+0x46/0x70
[    9.771948]  [<c10e059c>] do_mount+0x20c/0x6b0
[    9.771955]  [<c10a7044>] ? strndup_user+0x34/0x50
[    9.771958]  [<c10e0acc>] sys_mount+0x6c/0xa0
[    9.771964]  [<c13f2557>] sysenter_do_call+0x12/0x26

According to comment in bit_putcs() that kammloc() call only happens
when fbcon is drawing to a monochrome framebuffer (which is my case with
hid-picolcd).

Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agofbcon: prevent possible buffer overflow.
Paul Cercueil [Tue, 24 Jul 2012 01:00:24 +0000 (03:00 +0200)]
fbcon: prevent possible buffer overflow.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
12 years agoblock: replace __getblk_slow misfix by grow_dev_page fix
Hugh Dickins [Thu, 23 Aug 2012 10:17:36 +0000 (12:17 +0200)]
block: replace __getblk_slow misfix by grow_dev_page fix

Commit 91f68c89d8f3 ("block: fix infinite loop in __getblk_slow")
is not good: a successful call to grow_buffers() cannot guarantee
that the page won't be reclaimed before the immediate next call to
__find_get_block(), which is why there was always a loop there.

Yesterday I got "EXT4-fs error (device loop0): __ext4_get_inode_loc:3595:
inode #19278: block 664: comm cc1: unable to read itable block" on console,
which pointed to this commit.

I've been trying to bisect for weeks, why kbuild-on-ext4-on-loop-on-tmpfs
sometimes fails from a missing header file, under memory pressure on
ppc G5.  I've never seen this on x86, and I've never seen it on 3.5-rc7
itself, despite that commit being in there: bisection pointed to an
irrelevant pinctrl merge, but hard to tell when failure takes between
18 minutes and 38 hours (but so far it's happened quicker on 3.6-rc2).

(I've since found such __ext4_get_inode_loc errors in /var/log/messages
from previous weeks: why the message never appeared on console until
yesterday morning is a mystery for another day.)

Revert 91f68c89d8f3, restoring __getblk_slow() to how it was (plus
a checkpatch nitfix).  Simplify the interface between grow_buffers()
and grow_dev_page(), and avoid the infinite loop beyond end of device
by instead checking init_page_buffers()'s end_block there (I presume
that's more efficient than a repeated call to blkdev_max_block()),
returning -ENXIO to __getblk_slow() in that case.

And remove akpm's ten-year-old "__getblk() cannot fail ... weird"
comment, but that is worrying: are all users of __getblk() really
now prepared for a NULL bh beyond end of device, or will some oops??

Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: stable@vger.kernel.org # 3.0 3.2 3.4 3.5
Signed-off-by: Jens Axboe <axboe@kernel.dk>