12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Sat, 30 May 2009 22:25:30 +0000 (15:25 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/bart/ide-2.6

* 'for-linus' of git://
  ide_pci_generic: add quirk for Netcell ATA RAID

12 years agoide_pci_generic: add quirk for Netcell ATA RAID
Bartlomiej Zolnierkiewicz [Sat, 30 May 2009 18:06:54 +0000 (20:06 +0200)]
ide_pci_generic: add quirk for Netcell ATA RAID

We need to explicitly mark words 85-87 as valid ones since
firmware doesn't do it.

This should fix support for LBA48 and FLUSH CACHE [EXT] command
which stopped working after we applied more strict checking of
identify words in:

commit 942dcd85bf8edf38cdc3745306ca250684d99a61
("ide: idedisk_supports_lba48() -> ata_id_lba48_enabled()")


commit 4b58f17d7c45a8e5f4acda641bec388398b9c0fa
("ide: ide_id_has_flush_cache() -> ata_id_flush_enabled()")

Reported-and-tested-by: "Trevor Hemsley" <>
Signed-off-by: Bartlomiej Zolnierkiewicz <>
12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Sat, 30 May 2009 15:04:15 +0000 (08:04 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ryusuke/nilfs2

* 'for-linus' of git://
  nilfs2: fix bh leak in nilfs_cpfile_delete_checkpoints function

12 years agoMerge branch 'release' of git://
Linus Torvalds [Sat, 30 May 2009 14:57:44 +0000 (07:57 -0700)]
Merge branch 'release' of git://git./linux/kernel/git/lenb/linux-acpi-2.6

* 'release' of git://
  ACPI, i915: build fix (v2)
  acpi-cpufreq: fix printk typo and indentation
  ACPI processor: remove spurious newline from warning message
  drm/i915: acpi/video.c fix section mismatch warning
  ACPI: video: DMI workaround broken Acer 5315 BIOS enabling display brightness
  ACPI: video: DMI workaround broken eMachines E510 BIOS enabling display brightness
  ACPI: sanity check _PSS frequency to prevent cpufreq crash
  i7300_idle: allow testing on i5000-series hardware w/o re-compile
  PCI/ACPI: fix wrong ref count handling in acpi_pci_bind()
  cpuidle: fix AMD C1E suspend hang
  cpuidle: makes AMD C1E work in acpi_idle

12 years agoMerge branch 'fixes' of git://
Linus Torvalds [Sat, 30 May 2009 14:57:33 +0000 (07:57 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/djbw/async_tx

* 'fixes' of git://
  fsldma: Fix compile warnings
  fsldma: fix memory leak on error path in fsl_dma_prep_memcpy()
  fsldma: snooping is not enabled for last entry in descriptor chain
  fsldma: fix infinite loop on multi-descriptor DMA chain completion
  fsldma: fix "DMA halt timeout!" errors
  fsldma: fix check on potential fdev->chan[] overflow
  fsldma: update mailling list address in MAINTAINERS

12 years agonilfs2: fix bh leak in nilfs_cpfile_delete_checkpoints function
Ryusuke Konishi [Sat, 30 May 2009 12:50:58 +0000 (21:50 +0900)]
nilfs2: fix bh leak in nilfs_cpfile_delete_checkpoints function

The nilfs_cpfile_delete_checkpoints() wrongly skips brelse() for the
header block of checkpoint file in case of errors.  This fixes the
leak bug.

Signed-off-by: Ryusuke Konishi <>
12 years agoMerge branches 'bugzilla-13121+', 'bugzilla-13233', 'redhat-bugzilla-500311', 'pci...
Len Brown [Sat, 30 May 2009 01:30:01 +0000 (21:30 -0400)]
Merge branches 'bugzilla-13121+', 'bugzilla-13233', 'redhat-bugzilla-500311', 'pci-bind-oops', 'misc-2.6.30' and 'i7300_idle' into release

12 years agoACPI, i915: build fix (v2)
Len Brown [Sat, 30 May 2009 01:11:27 +0000 (21:11 -0400)]
ACPI, i915: build fix (v2)

drivers/built-in.o: In function `intel_opregion_init':
(.text+0x9d540): undefined reference to `acpi_video_register'

v2: move under DRM_I915 from DRM_I915_KMS

Signed-off-by: Len Brown <>
Signed-off-by: Randy Dunlap <>
12 years agoacpi-cpufreq: fix printk typo and indentation
Joe Perches [Tue, 26 May 2009 21:58:39 +0000 (14:58 -0700)]
acpi-cpufreq: fix printk typo and indentation

Signed-off-by: Joe Perches <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Len Brown <>
12 years agoACPI processor: remove spurious newline from warning message
Frans Pop [Fri, 22 May 2009 08:23:40 +0000 (10:23 +0200)]
ACPI processor: remove spurious newline from warning message

Commit 4973b22a ("ACPI processor: reset the throttling state once it's
invalid") introduced a new warning which prints a spurious newline.

The ACPI_WARNING macro that is used already takes care of adding a
newline, after adding ACPI_CA_VERSION to the message. Remove the newline
to avoid the message getting split into two lines.

Signed-off-by: Frans Pop <>
Signed-off-by: Len Brown <>
12 years agodrm/i915: acpi/video.c fix section mismatch warning
Jaswinder Singh Rajput [Wed, 20 May 2009 06:26:08 +0000 (11:56 +0530)]
drm/i915: acpi/video.c fix section mismatch warning

Currently acpi_video_exit() is exported as well as using __exit which causes:

  WARNING: drivers/acpi/video.o(__ksymtab+0x0): Section mismatch in reference from the variable __ksymtab_acpi_video_exit to the function .exit.text:acpi_video_exit()
  The symbol acpi_video_exit is exported and annotated __exit
  Fix this by removing the __exit annotation of acpi_video_exit or drop the export.

Signed-off-by: Jaswinder Singh Rajput <>
Signed-off-by: Len Brown <>
12 years agoACPI: video: DMI workaround broken Acer 5315 BIOS enabling display brightness
Zhang Rui [Tue, 19 May 2009 19:08:41 +0000 (15:08 -0400)]
ACPI: video: DMI workaround broken Acer 5315 BIOS enabling display brightness

Signed-off-by: Zhang Rui <>
Signed-off-by: Len Brown <>
12 years agoACPI: video: DMI workaround broken eMachines E510 BIOS enabling display brightness
Zhang Rui [Wed, 27 May 2009 03:35:34 +0000 (23:35 -0400)]
ACPI: video: DMI workaround broken eMachines E510 BIOS enabling display brightness

Signed-off-by: Zhang Rui <>
Signed-off-by: Len Brown <>
12 years agoACPI: sanity check _PSS frequency to prevent cpufreq crash
Len Brown [Tue, 26 May 2009 19:11:06 +0000 (15:11 -0400)]
ACPI: sanity check _PSS frequency to prevent cpufreq crash

When BIOS SETUP is changed to disable EIST, some BIOS
hand the OS an un-initialized _PSS:

        Name (_PSS, Package (0x06)
            Package (0x06)
                0x80000000, // frequency [MHz]
                0x80000000, // power [mW]
                0x80000000, // latency [us]
                0x80000000, // BM latency [us]
                0x80000000, // control
                0x80000000 // status

These are outrageous values for frequency,
power and latency, raising the question where to draw
the line between legal and illegal.  We tend to survive
garbage in the power and latency fields, but we can BUG_ON
when garbage is in the frequency field.

Cpufreq multiplies the frequency by 1000 and stores it in a u32 KHz.
So disregard a _PSS with a frequency so large
that it can't be represented by cpufreq.

Signed-off-by: Len Brown <>
12 years agoMerge
Linus Torvalds [Fri, 29 May 2009 23:07:39 +0000 (16:07 -0700)]

  [ARM] update mach-types
  [ARM] Add cmpxchg support for ARMv6+ systems (v5)
  [ARM] barriers: improve xchg, bitops and atomic SMP barriers
  Gemini: Fix SRAM/ROM location after memory swap
  MAINTAINER: Add F: entries for Gemini and FA526
  [ARM] disable NX support for OABI-supporting kernels
  [ARM] add coherent DMA mask for mv643xx_eth
  [ARM] pxa/palm: fix PalmLD/T5/TX AC97 MFP
  [ARM] pxa: add parameter to clksrc_read() for pxa168/910
  [ARM] pxa: fix the incorrectly defined drive strength macros for pxa{168,910}
  [ARM] Orion: Remove explicit name for platform device resources
  [ARM] Kirkwood: Correct MPP for SATA activity/presence LEDs of QNAP TS-119/TS-219.
  [ARM] pxa/ezx: fix pin configuration for low power mode
  [ARM] pxa/spitz: provide spitz_ohci_exit() that unregisters USB_HOST GPIO
  [ARM] pxa: enable GPIO receivers after configuring pins
  [ARM] pxa: allow gpio_reset drive high during normal work
  [ARM] pxa: save/restore PGSR on suspend/resume.

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Fri, 29 May 2009 19:17:03 +0000 (12:17 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://
  PCI Hotplug: acpiphp: don't store a pci_dev in acpiphp_func

12 years agoMerge git://
Linus Torvalds [Fri, 29 May 2009 15:52:13 +0000 (08:52 -0700)]
Merge git://

* git://
  jffs2: Fix corruption when flash erase/write failure
  mtd: MXC NAND driver fixes (v5)

12 years agoMerge git://
Linus Torvalds [Fri, 29 May 2009 15:50:15 +0000 (08:50 -0700)]
Merge git://git./linux/kernel/git/gregkh/usb-2.6

* git://
  Revert "USB: Correct Makefile to make isp1760 buildable"
  usb-serial: fix crash when sub-driver updates firmware
  USB: isp1760: urb_dequeue doesn't always find the urbs
  USB: Yet another Conexant Clone to add to cdc-acm.c
  USB: atmel_usb_udc: Use kzalloc() to allocate ep structures
  USB: atmel-usba-udc : fix control out requests.

12 years agoMerge git://
Linus Torvalds [Fri, 29 May 2009 15:49:52 +0000 (08:49 -0700)]
Merge git://git./linux/kernel/git/gregkh/driver-core-2.6

* git://
  Driver Core: do not oops when driver_unregister() is called for unregistered drivers
  sysfs: file.c: use create_singlethread_workqueue()

12 years agoMerge branch 'for-2.6.30' of git://
Linus Torvalds [Fri, 29 May 2009 15:49:09 +0000 (08:49 -0700)]
Merge branch 'for-2.6.30' of git://

* 'for-2.6.30' of git://
  svcrdma: dma unmap the correct length for the RPCRDMA header page.
  nfsd: Revert "svcrpc: take advantage of tcp autotuning"
  nfsd: fix hung up of nfs client while sync write data to nfs server

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Fri, 29 May 2009 15:48:25 +0000 (08:48 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://
  Input: libps2 - better handle bad scheduler decisions
  Input: usb1400_ts - fix access to "device data" in resume function
  Input: multitouch - augment event semantics documentation
  Input: multitouch - add tracking ID to the protocol

12 years agoMerge branch 'drm-intel-next' of git://
Linus Torvalds [Fri, 29 May 2009 15:48:13 +0000 (08:48 -0700)]
Merge branch 'drm-intel-next' of git://git./linux/kernel/git/anholt/drm-intel

* 'drm-intel-next' of git://
  i915: Set object to gtt domain when faulting it back in
  drm/i915: Apply a big hammer to 865 GEM object CPU cache flushing.
  drm/i915: Fix tiling pitch handling on 8xx.

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Fri, 29 May 2009 15:47:53 +0000 (08:47 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://
  ALSA: hda - Compaq Presario CQ60 patching for Conexant
  sound: usb-audio: make the MotU Fastlane work again
  ALSA: Enable PCM hw_ptr_jiffies check only in xrun_debug mode
  ALSA: Fix invalid jiffies check after pause

12 years ago8250: Fix oops from setserial
Alan Cox [Thu, 28 May 2009 13:01:35 +0000 (14:01 +0100)]
8250: Fix oops from setserial

If you setserial a port which has never been initialised we change the type
but don't update the I/O method pointers. The same problem is true if you
change the io type of a port - but nobody ever does that so nobody noticed!

Remember the old type and when attaching if the type has changed reload the
port accessor pointers. We can't do it blindly as some 8250 drivers load custom
accessors and we must not stomp those.

Tested-by: Victor Seryodkin <>
Closes-bug: #13367
Signed-off-by: Alan Cox <>
Signed-off-by: Linus Torvalds <>
12 years agoedac: AMD8111 & AMD8131 Kconfig fixup
Harry Ciao [Thu, 28 May 2009 21:34:43 +0000 (14:34 -0700)]
edac: AMD8111 & AMD8131 Kconfig fixup

The amd8111_edac.c driver will fail allmodconfig on architectures other
than PPC, introduce Kconfig dependency to avoid this, since both AMD8111
and AMD8131 chips are only adopted on Maple so far.

Signed-off-by: Harry Ciao <>
Cc: Doug Thompson <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoedac: AMD8111 & AMD8131 use dev_name()
Harry Ciao [Thu, 28 May 2009 21:34:42 +0000 (14:34 -0700)]
edac: AMD8111 & AMD8131 use dev_name()

The "bus_id" member in the device structure has been obsolete, use
dev_name() instead.

Signed-off-by: Harry Ciao <>
Cc: Doug Thompson <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agomemcg: fix build warning and avoid checking for mem != null again and again
Nikanth Karthikesan [Thu, 28 May 2009 21:34:41 +0000 (14:34 -0700)]
memcg: fix build warning and avoid checking for mem != null again and again

Fix build warning, "mem_cgroup_is_obsolete defined but not used" when
CONFIG_DEBUG_VM is not set.  Also avoid checking for !mem again and again.

Signed-off-by: Nikanth Karthikesan <>
Acked-by: Pekka Enberg <>
Acked-by: KAMEZAWA Hiroyuki <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agomm: account for MAP_SHARED mappings using VM_MAYSHARE and not VM_SHARED in hugetlbfs
Mel Gorman [Thu, 28 May 2009 21:34:40 +0000 (14:34 -0700)]
mm: account for MAP_SHARED mappings using VM_MAYSHARE and not VM_SHARED in hugetlbfs


hugetlbfs reserves huge pages but does not fault them at mmap() time to
ensure that future faults succeed.  The reservation behaviour differs
depending on whether the mapping was mapped MAP_SHARED or MAP_PRIVATE.
For MAP_SHARED mappings, hugepages are reserved when mmap() is first
called and are tracked based on information associated with the inode.
Other processes mapping MAP_SHARED use the same reservation.  MAP_PRIVATE
track the reservations based on the VMA created as part of the mmap()
operation.  Each process mapping MAP_PRIVATE must make its own

hugetlbfs currently checks if a VMA is MAP_SHARED with the VM_SHARED flag
and not VM_MAYSHARE.  For file-backed mappings, such as hugetlbfs,
VM_SHARED is set only if the mapping is MAP_SHARED and the file was opened
read-write.  If a shared memory mapping was mapped shared-read-write for
populating of data and mapped shared-read-only by other processes, then
hugetlbfs would account for the mapping as if it was MAP_PRIVATE.  This
causes processes to fail to map the file MAP_SHARED even though it should
succeed as the reservation is there.

This patch alters mm/hugetlb.c and replaces VM_SHARED with VM_MAYSHARE
when the intent of the code was to check whether the VMA was mapped

Signed-off-by: Mel Gorman <>
Cc: Hugh Dickins <>
Cc: Ingo Molnar <>
Cc: <>
Cc: Lee Schermerhorn <>
Cc: KOSAKI Motohiro <>
Cc: <>
Cc: Eric B Munson <>
Cc: Adam Litke <>
Cc: Andy Whitcroft <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agox86: ignore VM_LOCKED when determining if hugetlb-backed page tables can be shared...
Mel Gorman [Thu, 28 May 2009 21:34:37 +0000 (14:34 -0700)]
x86: ignore VM_LOCKED when determining if hugetlb-backed page tables can be shared or not


On x86 and x86-64, it is possible that page tables are shared beween
shared mappings backed by hugetlbfs.  As part of this,
page_table_shareable() checks a pair of vma->vm_flags and they must match
if they are to be shared.  All VMA flags are taken into account, including

The problem is that VM_LOCKED is cleared on fork().  When a process with a
shared memory segment forks() to exec() a helper, there will be shared
VMAs with different flags.  The impact is that the shared segment is
sometimes considered shareable and other times not, depending on what
process is checking.

What happens is that the segment page tables are being shared but the
count is inaccurate depending on the ordering of events.  As the page
tables are freed with put_page(), bad pmd's are found when some of the
children exit.  The hugepage counters also get corrupted and the Total and
Free count will no longer match even when all the hugepage-backed regions
are freed.  This requires a reboot of the machine to "fix".

This patch addresses the problem by comparing all flags except VM_LOCKED
when deciding if pagetables should be shared or not for hugetlbfs-backed

Signed-off-by: Mel Gorman <>
Acked-by: Hugh Dickins <>
Cc: Ingo Molnar <>
Cc: <>
Cc: Lee Schermerhorn <>
Cc: KOSAKI Motohiro <>
Cc: <>
Cc: Eric B Munson <>
Cc: Adam Litke <>
Cc: Andy Whitcroft <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoatmel_lcdfb: correct fifo size for some products
Nicolas Ferre [Thu, 28 May 2009 21:34:36 +0000 (14:34 -0700)]
atmel_lcdfb: correct fifo size for some products

Remove wrong fifo size definition for some AT91 products.

Due to a misunderstanding of some AT91 datasheets, a fifo size of 2048
(words) has been introduced by mistake.  In fact, all products (AT91/AT32)
are sharing the same fifo size of 512 words.

Signed-off-by: Nicolas Ferre <>
Cc: Andrew Victor <>
Acked-by: Haavard Skinnemoen <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoS3C-fb: PM fix
Marek Szyprowski [Thu, 28 May 2009 21:34:35 +0000 (14:34 -0700)]
S3C-fb: PM fix

Correctly restore the FrameBuffer register state in the resume function.

Reviewed-by: Kyungmin Park <>
Signed-off-by: Marek Szyprowski <>
Cc: Ben Dooks <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoserial: 8250_gsc: fix printk format error
Alexander Beregalov [Thu, 28 May 2009 21:34:34 +0000 (14:34 -0700)]
serial: 8250_gsc: fix printk format error

drivers/serial/8250_gsc.c:44: warning: format '%lx' expects type
'long unsigned int', but argument 2 has type 'resource_size_t'

[ fix it to handle u64's]
Signed-off-by: Alexander Beregalov <>
Cc: Alan Cox <>
Cc: Kyle McMartin <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoparport_gsc: fix printk format error
Alexander Beregalov [Thu, 28 May 2009 21:34:33 +0000 (14:34 -0700)]
parport_gsc: fix printk format error

drivers/parport/parport_gsc.c:356: warning: format '%lx' expects type
'long unsigned int', but argument 2 has type 'resource_size_t'

[ fix it to handle u64's]
Signed-off-by: Alexander Beregalov <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoflat: fix data sections alignment
Oskar Schirmer [Thu, 28 May 2009 21:34:31 +0000 (14:34 -0700)]
flat: fix data sections alignment

The flat loader uses an architecture's flat_stack_align() to align the
stack but assumes word-alignment is enough for the data sections.

However, on the Xtensa S6000 we have registers up to 128bit width
which can be used from userspace and therefor need userspace stack and
data-section alignment of at least this size.

This patch drops flat_stack_align() and uses the same alignment that
is required for slab caches, ARCH_SLAB_MINALIGN, or wordsize if it's
not defined by the architecture.

It also fixes m32r which was obviously kaput, aligning an
uninitialized stack entry instead of the stack pointer.

[ coding-style fixes]
Signed-off-by: Oskar Schirmer <>
Cc: David Howells <>
Cc: Russell King <>
Cc: Bryan Wu <>
Cc: Geert Uytterhoeven <>
Acked-by: Paul Mundt <>
Cc: Greg Ungerer <>
Signed-off-by: Johannes Weiner <>
Acked-by: Mike Frysinger <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoMAINTAINERS: change email address for Thomas Dahlmann
Thomas Dahlmann [Thu, 28 May 2009 21:34:30 +0000 (14:34 -0700)]
MAINTAINERS: change email address for Thomas Dahlmann

Signed-off-by: Thomas <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agodrivers/serial/mpc52xx_uart.c: fix array overindexing check
Roel Kluin [Thu, 28 May 2009 21:34:29 +0000 (14:34 -0700)]
drivers/serial/mpc52xx_uart.c: fix array overindexing check

The check for an overindexing of mpc52xx_uart_{ports,nodes} has an

Signed-off-by: Roel Kluin <>
Acked-by: Wolfram Sang <>
Acked-by: Grant Likely <>
Cc: Benjamin Herrenschmidt <>
Cc: Alan Cox <>
Cc: <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agomemcg: fix deadlock between lock_page_cgroup and mapping tree_lock
Daisuke Nishimura [Thu, 28 May 2009 21:34:28 +0000 (14:34 -0700)]
memcg: fix deadlock between lock_page_cgroup and mapping tree_lock

mapping->tree_lock can be acquired from interrupt context.  Then,
following dead lock can occur.

Assume "A" as a page.

-> take mapping->tree_lock.
       take mapping->tree_lock
-> lock_page_cgroup(A)

This patch tries to fix above deadlock by moving memcg's hook to out of
mapping->tree_lock.  charge/uncharge of pagecache/swapcache is protected
by page lock, not tree_lock.

After this patch, lock_page_cgroup() is not called under mapping->tree_lock.

Signed-off-by: KAMEZAWA Hiroyuki <>
Signed-off-by: Daisuke Nishimura <>
Cc: Balbir Singh <>
Cc: Daisuke Nishimura <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoprocfs: make errno values consistent when open pident vs exit(2) race occurs
KOSAKI Motohiro [Thu, 28 May 2009 21:34:21 +0000 (14:34 -0700)]
procfs: make errno values consistent when open pident vs exit(2) race occurs

proc_pident_instantiate() has following call flow.


And, proc_pident_lookup() has following error handling.

const struct pid_entry *p, *last;
error = ERR_PTR(-ENOENT);
if (!task)
goto out_no_task;

Then, proc_pident_instantiate should return ENOENT too when racing against
exit(2) occur.

EINAL has two bad reason.
  - it implies caller is wrong. bad the race isn't caller's mistake.
  - man 2 open don't explain EINVAL. user often don't handle it.

Note: Other proc_pid_make_inode() caller already use ENOENT properly.

Acked-by: Eric W. Biederman <>
Cc: Alexey Dobriyan <>
Signed-off-by: KOSAKI Motohiro <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agocred: #include init.h in cred.h
Alexey Dobriyan [Thu, 28 May 2009 21:34:20 +0000 (14:34 -0700)]
cred: #include init.h in cred.h

linux/cred.h can't be included as first header (alphabetical order)
because it uses __init which is enough to break compilation on some archs.

Signed-off-by: Alexey Dobriyan <>
Acked-by: James Morris <>
Acked-by: David Howells <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agooom: fix possible oom_dump_tasks NULL pointer
David Rientjes [Thu, 28 May 2009 21:34:19 +0000 (14:34 -0700)]
oom: fix possible oom_dump_tasks NULL pointer

When /proc/sys/vm/oom_dump_tasks is enabled, it is possible to get a NULL
pointer for tasks that have detached mm's since task_lock() is not held
during the tasklist scan.  Add the task_lock().

Acked-by: Nick Piggin <>
Acked-by: Mel Gorman <>
Cc: Rik van Riel <>
Signed-off-by: David Rientjes <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agoMAINTAINERS: pair EDAC-E752X P: and M: entries
Joe Perches [Thu, 28 May 2009 21:34:18 +0000 (14:34 -0700)]
MAINTAINERS: pair EDAC-E752X P: and M: entries

Entries should be P: name then M: email address.

Signed-off-by: Joe Perches <>
Acked-by: Doug Thompson <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Linus Torvalds <>
12 years agojffs2: Fix corruption when flash erase/write failure
Joakim Tjernlund [Thu, 28 May 2009 15:43:59 +0000 (17:43 +0200)]
jffs2: Fix corruption when flash erase/write failure

Erase errors such as:
"Newly-erased block contained word 0xa4ef223e at offset 0x0296a014"
and failure to write the clean marker,
moves the offending erase block to erasing list before calling
jffs2_erase_failed(). This is bad as jffs2_erase_failed() will
also move the block to the bad_list, but is now moving the
wrong block, causing FS corruption.

Signed-off-by: Joakim Tjernlund <>
Signed-off-by: David Woodhouse <>
12 years agomtd: MXC NAND driver fixes (v5)
Vladimir Barinov [Thu, 23 Apr 2009 11:47:22 +0000 (15:47 +0400)]
mtd: MXC NAND driver fixes (v5)

The following patch fixes:
 - re-initialization of host->col_addr which is used as byte index
   between the successive READID flash commands.
 - compile error when CONFIG_PM is enabled
 - pass on the error code from clk_get()
 - return -ENOMEM in case of failed ioremap()
 - pass on the return value of platform_driver_probe() directly
 - remove excessive printk
 - let command line partition table parsing with mxc_nand name.
   The cmd_line parsing is done via <mtd-id> name that differs
   from mxc_nand by default and looks like "NAND 256MiB 1,8V 8-bit"

Signed-off-by: Vladimir Barinov <>
Signed-off-by: Lothar Wassmann <>
Acked-by: Sascha Hauer <>
Signed-off-by: Artem Bityutskiy <>
Signed-off-by: David Woodhouse <>
12 years agoMerge branch 'for-rmk' of git://
Russell King [Fri, 29 May 2009 09:19:22 +0000 (10:19 +0100)]
Merge branch 'for-rmk' of git://

12 years ago[ARM] update mach-types
Russell King [Fri, 29 May 2009 09:15:08 +0000 (10:15 +0100)]
[ARM] update mach-types

Signed-off-by: Russell King <>
12 years agoi7300_idle: allow testing on i5000-series hardware w/o re-compile
Len Brown [Thu, 28 May 2009 03:59:58 +0000 (23:59 -0400)]
i7300_idle: allow testing on i5000-series hardware w/o re-compile

Testing the i7300_idle driver on i5000-series hardware required
an edit to i7300_idle.h to "#define SUPPORT_I5000 1" and a re-build
of both i7300_idle and ioat_dma.

Replace that build-time scheme with a load-time module parameter:
"7300_idle.forceload=1" to make it easier to test the driver
on hardware that while not officially validated, works fine
and is much more commonly available.

By default (no modparam) the driver will continue to load
only on the i7300.

Note that ioat_dma runs a copy of i7300_idle's probe routine
to know to reserve an IOAT channel for i7300_idle.
This change makes ioat_dma do that always on the i5000,
just like it does on the i7300.

Signed-off-by: Len Brown <>
Acked-by: Andrew Henroid <>
12 years agoDriver Core: do not oops when driver_unregister() is called for unregistered drivers
Kay Sievers [Thu, 28 May 2009 21:24:07 +0000 (14:24 -0700)]
Driver Core: do not oops when driver_unregister() is called for unregistered drivers

We also fix a problem with cleaning up properly when initializing
drivers and devices, so checks like this will work successfully.

Portions of the patch by Linus and Greg and Ingo.

Reported-by: Ozan Çağlayan <>
Signed-off-by: Kay Sievers <>
Cc: Linus Torvalds <>
Cc: Ingo Molnar <>
Signed-off-by: Greg Kroah-Hartman <>
12 years agosysfs: file.c: use create_singlethread_workqueue()
Andrew Morton [Thu, 7 May 2009 19:36:53 +0000 (12:36 -0700)]
sysfs: file.c: use create_singlethread_workqueue()

We don't need a kernel thread per CPU for this application.

Acked-by: Alex Chiang <>
Cc: Lai Jiangshan <>
Cc: Peter Zijlstra <>
Signed-off-by: Andrew Morton <>
Signed-off-by: Greg Kroah-Hartman <>
12 years agoRevert "USB: Correct Makefile to make isp1760 buildable"
Mike Frysinger [Wed, 20 May 2009 12:49:48 +0000 (08:49 -0400)]
Revert "USB: Correct Makefile to make isp1760 buildable"

This reverts commit 26e1287594864169577327fef233befc9739be3b.

A larger patch (f7e7aa585) a few days after this one added the same line
to the Makefile, but in a different place.  While it'd be more correct to
revert that one, it's easier to revert this one because this is a

Signed-off-by: Mike Frysinger <>
CC: Greg Kroah-Hartman <>
Signed-off-by: Greg Kroah-Hartman <>
12 years agousb-serial: fix crash when sub-driver updates firmware
Alan Stern [Wed, 27 May 2009 15:25:52 +0000 (11:25 -0400)]
usb-serial: fix crash when sub-driver updates firmware

This patch (as1244) fixes a crash in usb-serial that occurs when a
sub-driver returns a positive value from its attach method, indicating
that new firmware was loaded and the device will disconnect and
reconnect.  The usb-serial core then skips the step of registering the
port devices; when the disconnect occurs, the attempt to unregister
the ports fails dramatically.

This problem shows up with Keyspan devices and it might affect others
as well.

When the attach method returns a positive value, the patch sets
num_ports to 0.  This tells usb_serial_disconnect() not to try
unregistering any of the ports; instead they are cleaned up by

Signed-off-by: Alan Stern <>
Tested-by: Benjamin Herrenschmidt <>
Cc: stable <>
Signed-off-by: Greg Kroah-Hartman <>
12 years agoUSB: isp1760: urb_dequeue doesn't always find the urbs
Warren Free [Fri, 8 May 2009 08:27:08 +0000 (10:27 +0200)]
USB: isp1760: urb_dequeue doesn't always find the urbs

The option driver (and presumably others) allocates several URBs when it
opens and tries to free them when it closes. The isp1760_urb_dequeue
function gets called, but the packet being dequeued is not necessarily at
front of one of the 32 queues. If not, the isp1760_urb_done function doesn't
get called for the URB and the process trying to free it hangs forever on a
wait_queue. This patch does two things. If the URB being dequeued has others
queued behind it, it re-queues them. And it searches the queues looking for
the URB being dequeued rather than just looking at the one at the front of
the queue.

[bigeasy@linutronix] whitespace fixes, reformating

Cc: stable <>
Signed-off-by: Warren Free <>
Signed-off-by: Sebastian Andrzej Siewior <>
Signed-off-by: Greg Kroah-Hartman <>
12 years agoUSB: Yet another Conexant Clone to add to cdc-acm.c
Xiao Kaijian [Thu, 7 May 2009 16:48:23 +0000 (00:48 +0800)]
USB: Yet another Conexant Clone to add to cdc-acm.c

This patch adds another quirky Conexant USB Modem Clone to usb cdc-acm.c

Signed-off-by: Xiao Kaijian <>
Signed-off-by: Greg Kroah-Hartman <>
12 years agoUSB: atmel_usb_udc: Use kzalloc() to allocate ep structures
Haavard Skinnemoen [Tue, 5 May 2009 00:22:43 +0000 (17:22 -0700)]
USB: atmel_usb_udc: Use kzalloc() to allocate ep structures

This ensures that all fields are properly initialized.

Signed-off-by: Haavard Skinnemoen <>
Acked-by: David Brownell <>
Signed-off-by: Greg Kroah-Hartman <>
12 years agoUSB: atmel-usba-udc : fix control out requests.
Martin Fuzzey [Fri, 1 May 2009 15:21:11 +0000 (17:21 +0200)]
USB: atmel-usba-udc : fix control out requests.

usbtest #14 was failing with "udc: ep0: TXCOMP: Invalid endpoint state 2, halting endpoint..."
This occured since ep0 is bidirectional and ep->is_in is not valid (must always use ep->state)

Signed-off-by: Martin Fuzzey <>
Acked-by: David Brownell <>
Acked-by: Haavard Skinnemoen <>
Signed-off-by: Greg Kroah-Hartman <>
12 years ago[ARM] Add cmpxchg support for ARMv6+ systems (v5)
Mathieu Desnoyers [Thu, 28 May 2009 20:07:39 +0000 (16:07 -0400)]
[ARM] Add cmpxchg support for ARMv6+ systems (v5)

Add cmpxchg/cmpxchg64 support for ARMv6K and ARMv7 systems
(original patch from Catalin Marinas <>)

The cmpxchg and cmpxchg64 functions can be implemented using the
LDREX*/STREX* instructions. Since operand lengths other than 32bit are
required, the full implementations are only available if the ARMv6K
extensions are present (for the LDREXB, LDREXH and LDREXD instructions).

For ARMv6, only 32-bits cmpxchg is available.

Mathieu :

Make cmpxchg_local always available with best implementation for all type sizes (1, 2, 4 bytes).
Make cmpxchg64_local always available.

Use "Ir" constraint for "old" operand, like atomic.h atomic_cmpxchg does.

Change since v3 :
- Add "memory" clobbers (thanks to Nicolas Pitre)
- removed __asmeq(), only needed for old compilers, very unlikely on ARMv6+.

Note : ARMv7-M should eventually be ifdefed-out of cmpxchg64. But it's not
supported by the Linux kernel currently.

Put back arm < v6 cmpxchg support.

Signed-off-by: Mathieu Desnoyers <>
CC: Catalin Marinas <>
CC: Nicolas Pitre <>
Signed-off-by: Russell King <>
12 years ago[ARM] barriers: improve xchg, bitops and atomic SMP barriers
Russell King [Mon, 25 May 2009 19:58:00 +0000 (20:58 +0100)]
[ARM] barriers: improve xchg, bitops and atomic SMP barriers

Mathieu Desnoyers pointed out that the ARM barriers were lacking:

- cmpxchg, xchg and atomic add return need memory barriers on
  architectures which can reorder the relative order in which memory
  read/writes can be seen between CPUs, which seems to include recent
  ARM architectures. Those barriers are currently missing on ARM.

- test_and_xxx_bit were missing SMP barriers.

So put these barriers in.  Provide separate atomic_add/atomic_sub
operations which do not require barriers.

Reported-Reviewed-and-Acked-by: Mathieu Desnoyers <>
Signed-off-by: Russell King <>
12 years agoInput: libps2 - better handle bad scheduler decisions
Dmitry Torokhov [Thu, 28 May 2009 16:51:31 +0000 (09:51 -0700)]
Input: libps2 - better handle bad scheduler decisions

Sometimes devices send us their responses in time but due to
unfortunate scheduling decisions the receiving thread does not
get scheduled till much later and we erroneously decide that
device timed out. Work around this problem by checking whether we
received the data we needed instead of checking timeout

Tested-by: Sitsofe Wheeler <>
Signed-off-by: Dmitry Torokhov <>
12 years agoGemini: Fix SRAM/ROM location after memory swap
Paulius Zaleckas [Thu, 28 May 2009 13:42:25 +0000 (16:42 +0300)]
Gemini: Fix SRAM/ROM location after memory swap

Signed-off-by: Paulius Zaleckas <>
12 years agoMAINTAINER: Add F: entries for Gemini and FA526
Paulius Zaleckas [Thu, 28 May 2009 13:41:36 +0000 (16:41 +0300)]
MAINTAINER: Add F: entries for Gemini and FA526

Signed-off-by: Paulius Zaleckas <>
12 years agoMerge branch 'fix/hda' into for-linus
Takashi Iwai [Thu, 28 May 2009 10:02:13 +0000 (12:02 +0200)]
Merge branch 'fix/hda' into for-linus

* fix/hda:
  ALSA: hda - Compaq Presario CQ60 patching for Conexant

12 years agoALSA: hda - Compaq Presario CQ60 patching for Conexant
Tony Vroon [Wed, 27 May 2009 20:00:41 +0000 (21:00 +0100)]
ALSA: hda - Compaq Presario CQ60 patching for Conexant

A docking mic control is shown by default. The Compaq Presario
CQ60 laptop has no docking connector, so designate it as a
CXT5051_HP model.
This makes the phantom mixer slider disappear.

Signed-off-by: Tony Vroon <>
Signed-off-by: Takashi Iwai <>
12 years agosvcrdma: dma unmap the correct length for the RPCRDMA header page.
Steve Wise [Thu, 14 May 2009 21:34:28 +0000 (16:34 -0500)]
svcrdma: dma unmap the correct length for the RPCRDMA header page.

The svcrdma module was incorrectly unmapping the RPCRDMA header page.
On IBM pserver systems this causes a resource leak that results in
running out of bus address space (10 cthon iterations will reproduce it).
The code was mapping the full page but only unmapping the actual header
length.  The fix is to only map the header length.

I also cleaned up the use of ib_dma_map_page() calls since the unmap
logic always uses ib_dma_unmap_single().  I made these symmetrical.

Signed-off-by: Steve Wise <>
Signed-off-by: Tom Tucker <>
Signed-off-by: J. Bruce Fields <>
12 years agonfsd: Revert "svcrpc: take advantage of tcp autotuning"
J. Bruce Fields [Wed, 27 May 2009 22:51:06 +0000 (18:51 -0400)]
nfsd: Revert "svcrpc: take advantage of tcp autotuning"

This reverts commit 47a14ef1af48c696b214ac168f056ddc79793d0e "svcrpc:
take advantage of tcp autotuning", which uncovered some further problems
in the server rpc code, causing significant performance regressions in
common cases.

We will likely reinstate this patch after releasing 2.6.30 and applying
some work on the underlying fixes to the problem (developed by Trond).

Reported-by: Jeff Moyer <>
Cc: Olga Kornievskaia <>
Cc: Jim Rees <>
Cc: Trond Myklebust <>
Signed-off-by: J. Bruce Fields <>
12 years agoPCI/ACPI: fix wrong ref count handling in acpi_pci_bind()
Kenji Kaneshige [Tue, 26 May 2009 00:08:03 +0000 (09:08 +0900)]
PCI/ACPI: fix wrong ref count handling in acpi_pci_bind()

The 'dev' field of struct acpi_pci_data is having a pointer to struct
pci_dev without incrementing the reference counter. Because of this, I
got the following kernel oops when I was doing some pci hotplug
operations. This patch fixes this bug by replacing wrong hand-made
pci_find_slot() with pci_get_slot() in acpi_pci_bind().

 BUG: unable to handle kernel NULL pointer dereference at 00000000000000e8
 IP: [<ffffffff803f0e9b>] acpi_pci_unbind+0xb1/0xdd

 Call Trace:
  [<ffffffff803ecee4>] acpi_bus_remove+0x54/0x68
  [<ffffffff803ecf6d>] acpi_bus_trim+0x75/0xe3
  [<ffffffffa0345ddd>] acpiphp_disable_slot+0x16d/0x1e0 [acpiphp]
  [<ffffffffa03441f0>] disable_slot+0x20/0x60 [acpiphp]
  [<ffffffff803cfc18>] power_write_file+0xc8/0x110
  [<ffffffff803c6a54>] pci_slot_attr_store+0x24/0x30
  [<ffffffff803469ce>] sysfs_write_file+0xce/0x140
  [<ffffffff802e94e7>] vfs_write+0xc7/0x170
  [<ffffffff802e9aa0>] sys_write+0x50/0x90
  [<ffffffff8020bd6b>] system_call_fastpath+0x16/0x1b

Signed-off-by: Kenji Kaneshige <>
Reviewed-by: Bjorn Helgaas <>
Reviewed-by: Alex Chiang <>
Tested-by: Alex Chiang <>
Signed-off-by: Len Brown <>
12 years agonfsd: fix hung up of nfs client while sync write data to nfs server
Wei Yongjun [Tue, 19 May 2009 04:03:15 +0000 (12:03 +0800)]
nfsd: fix hung up of nfs client while sync write data to nfs server

Commit 'Short write in nfsd becomes a full write to the client'
(31dec2538e45e9fff2007ea1f4c6bae9f78db724) broken the sync write.
With the following commands to reproduce:

  $ mount -t nfs -o sync /mnt
  $ cd /mnt
  $ echo aaaa > temp.txt

Then nfs client is hung up.

In SYNC mode the server alaways return the write count 0 to the
client. This is because the value of host_err in nfsd_vfs_write()
will be overwrite in SYNC mode by 'host_err=nfsd_sync(file);',
and then we return host_err(which is now 0) as write count.

This patch fixed the problem.

Signed-off-by: Wei Yongjun <>
Signed-off-by: J. Bruce Fields <>
12 years agofsldma: Fix compile warnings
Kumar Gala [Wed, 13 May 2009 21:25:57 +0000 (16:25 -0500)]
fsldma: Fix compile warnings

We we build with dma_addr_t as a 64-bit quantity we get:

drivers/dma/fsldma.c: In function 'fsl_chan_xfer_ld_queue':
drivers/dma/fsldma.c:625: warning: cast to pointer from integer of different size
drivers/dma/fsldma.c: In function 'fsl_dma_chan_do_interrupt':
drivers/dma/fsldma.c:737: warning: cast to pointer from integer of different size
drivers/dma/fsldma.c:737: warning: cast to pointer from integer of different size
drivers/dma/fsldma.c: In function 'of_fsl_dma_probe':
drivers/dma/fsldma.c:927: warning: cast to pointer from integer of different

Signed-off-by: Kumar Gala <>
Signed-off-by: Dan Williams <>
12 years agoi915: Set object to gtt domain when faulting it back in
Kristian Høgsberg [Wed, 27 May 2009 18:37:28 +0000 (14:37 -0400)]
i915: Set object to gtt domain when faulting it back in

When a GEM object is evicted from the GTT we set it to the CPU domain,
as it might get swapped in and out or ever mmapped regularly.  If the
object is mmapped through the GTT it can still get evicted in this way
by other objects requiring GTT space.  When the GTT mapping is touched
again we fault it back into the GTT, but fail to set it back to the
GTT domain.  This means we fail to flush any cached CPU writes to the
pages backing the object which will then happen "eventually", typically
after we write to the page through the uncached GTT mapping.

[anholt: Note that userland does do a set_domain(GTT, GTT) when starting
to access the GTT mapping.  That covers getting the existing mapping of the
object synchronized if it's bound to the GTT.  But set_domain(GTT, GTT)
doesn't do anything if the object is currently unbound.  This fix covers the
transition to being bound for GTT mapping.]

Fixes glyph and other pixmap corruption during swapping.  fd.o bug #21790

Signed-off-by: Kristian Høgsberg <>
Signed-off-by: Eric Anholt <>
12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Wed, 27 May 2009 17:58:49 +0000 (10:58 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/vapier/blackfin

* 'for-linus' of git://
  Blackfin: fix strncmp.o build error
  Blackfin: drop unneeded asm/.gitignore
  Blackfin: ignore generated
  MAINTAINERS: drop (subscribers-only) markings on Blackfin lists
  MAINTAINERS: update Blackfin items
  Blackfin: hook up preadv/pwritev syscalls

12 years agoMerge branch 'merge' of git://
Linus Torvalds [Wed, 27 May 2009 17:58:23 +0000 (10:58 -0700)]
Merge branch 'merge' of git://git./linux/kernel/git/benh/powerpc

* 'merge' of git://
  powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency.
  powerpc: Minor cleanups of kernel virt address space definitions
  powerpc: Move dma-noncoherent.c from arch/powerpc/lib to arch/powerpc/mm
  Revert "powerpc: Rework dma-noncoherent to use generic vmalloc layer"

12 years agoCacheFiles: Fixup renamed filenames in comments in internal.h
David Howells [Wed, 27 May 2009 14:46:55 +0000 (15:46 +0100)]
CacheFiles: Fixup renamed filenames in comments in internal.h

Fix up renamed filenames in comments in fs/cachefiles/internal.h.

Originally, the files were all called cf-xxx.c, but they got renamed to
just xxx.c.

Signed-off-by: David Howells <>
Signed-off-by: Linus Torvalds <>
12 years agoFS-Cache: Fixup renamed filenames in comments in internal.h
David Howells [Wed, 27 May 2009 14:46:50 +0000 (15:46 +0100)]
FS-Cache: Fixup renamed filenames in comments in internal.h

Fix up renamed filenames in comments in fs/fscache/internal.h.

Originally, the files were all called fsc-xxx.c, but they got renamed to
just xxx.c.

Signed-off-by: David Howells <>
Signed-off-by: Linus Torvalds <>
12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Wed, 27 May 2009 17:18:26 +0000 (10:18 -0700)]
Merge branch 'for-linus' of git://

* 'for-linus' of git://
  md: raid5: change incorrect usage of 'min' macro to 'min_t'

12 years agoMerge branch 'fix/pcm-jiffies-check' into for-linus
Takashi Iwai [Wed, 27 May 2009 14:51:27 +0000 (16:51 +0200)]
Merge branch 'fix/pcm-jiffies-check' into for-linus

* fix/pcm-jiffies-check:
  ALSA: Enable PCM hw_ptr_jiffies check only in xrun_debug mode
  ALSA: Fix invalid jiffies check after pause

12 years agoMerge branch 'fix/misc' into for-linus
Takashi Iwai [Wed, 27 May 2009 14:51:15 +0000 (16:51 +0200)]
Merge branch 'fix/misc' into for-linus

* fix/misc:
  sound: usb-audio: make the MotU Fastlane work again

12 years agoInput: usb1400_ts - fix access to "device data" in resume function
Manuel Traut [Wed, 27 May 2009 13:20:05 +0000 (06:20 -0700)]
Input: usb1400_ts - fix access to "device data" in resume function

platform_data != driver_data

driver data is actually the "correct" place of the struct however it is
not placed there due to the need of the ac97 struct. This is broken since
d9105c2b01 aka "[ARM] 5184/1: Split ucb1400_ts into core and touchscreen"

Signed-off-by: Manuel Traut <>
Signed-off-by: Sebastian Andrzej Siewior <>
Signed-off-by: Dmitry Torokhov <>
12 years agomd: raid5: change incorrect usage of 'min' macro to 'min_t'
NeilBrown [Wed, 27 May 2009 11:39:05 +0000 (21:39 +1000)]
md: raid5: change incorrect usage of 'min' macro to 'min_t'

A recent patch to raid5.c use min on an int and a sector_t.
This isn't allowed.
So change it to min_t(sector_t,x,y).

Signed-off-by: NeilBrown <>
12 years agosound: usb-audio: make the MotU Fastlane work again
Clemens Ladisch [Wed, 27 May 2009 08:49:30 +0000 (10:49 +0200)]
sound: usb-audio: make the MotU Fastlane work again

Kernel 2.6.18 broke the MotU Fastlane, which uses duplicate endpoint
numbers in a manner that is not only illegal but also confuses the
kernel's endpoint descriptor caching mechanism.  To work around this, we
have to add a separate usb_set_interface() call to guide the USB core to
the correct descriptors.

Signed-off-by: Clemens Ladisch <>
Reported-and-tested-by: David Fries <>
Cc: <>
Signed-off-by: Takashi Iwai <>
12 years agoALSA: Enable PCM hw_ptr_jiffies check only in xrun_debug mode
Takashi Iwai [Wed, 27 May 2009 08:53:33 +0000 (10:53 +0200)]
ALSA: Enable PCM hw_ptr_jiffies check only in xrun_debug mode

The PCM hw_ptr jiffies check results sometimes in problems when a
hardware doesn't give smooth hw_ptr updates.  So far, au88x0 and some
other drivers appear not working due to this strict check.
However, this check is a nice debug tool, and the capability should be
still kept.

Hence, we disable this check now as default unless the user enables it
by setting the xrun_debug mode to the specific stream via a proc file.

Signed-off-by: Takashi Iwai <>
12 years agoPCI Hotplug: acpiphp: don't store a pci_dev in acpiphp_func
Alex Chiang [Thu, 21 May 2009 22:21:15 +0000 (16:21 -0600)]
PCI Hotplug: acpiphp: don't store a pci_dev in acpiphp_func

An oops can occur if a user attempts to use both PCI logical
hotplug and the ACPI physical hotplug driver (acpiphp) in this
sequence, where $slot/address == $device.

In other words, if acpiphp has claimed a PCI device, and that
device is logically removed, then acpiphp may oops when it
attempts to access it again.

# echo 1 > /sys/bus/pci/devices/$device/remove
# echo 0 > /sys/bus/pci/slots/$slot/power

Unable to handle kernel NULL pointer dereference (address 0000000000000000)
Call Trace:
 [<a000000100016390>] show_stack+0x50/0xa0
 [<a000000100016c60>] show_regs+0x820/0x860
 [<a00000010003b390>] die+0x190/0x2a0
 [<a000000100066a40>] ia64_do_page_fault+0x8e0/0xa40
 [<a00000010000c7a0>] ia64_native_leave_kernel+0x0/0x270
 [<a0000001003b2660>] pci_remove_bus_device+0x120/0x260
 [<a0000002060549f0>] acpiphp_disable_slot+0x410/0x540 [acpiphp]
 [<a0000002060505c0>] disable_slot+0xc0/0x120 [acpiphp]
 [<a0000002040d21c0>] power_write_file+0x1e0/0x2a0 [pci_hotplug]
 [<a0000001003bb820>] pci_slot_attr_store+0x60/0xa0
 [<a000000100240f70>] sysfs_write_file+0x230/0x2c0
 [<a000000100195750>] vfs_write+0x190/0x2e0
 [<a0000001001961a0>] sys_write+0x80/0x100
 [<a00000010000c600>] ia64_ret_from_syscall+0x0/0x20
 [<a000000000010720>] __kernel_syscall_via_break+0x0/0x20

The root cause of this oops is that the logical remove ("echo 1 >
/sys/bus/pci/devices/$device/remove") destroyed the pci_dev. The
pci_dev struct itself wasn't deallocated because acpiphp kept a
reference, but some of its fields became invalid.

acpiphp doesn't have any real reason to keep a pointer to a
pci_dev around. It can always derive it using pci_get_slot().

If a logical remove destroys the pci_dev, acpiphp won't find it
and is thus prevented from causing mischief.

Reviewed-by: Matthew Wilcox <>
Reviewed-by: Kenji Kaneshige <>
Tested-by: Kenji Kaneshige <>
Reported-by: Kenji Kaneshige <>
Acked-by: Bjorn Helgaas <>
Signed-off-by: Alex Chiang <>
Signed-off-by: Jesse Barnes <>
12 years agoALSA: Fix invalid jiffies check after pause
Takashi Iwai [Wed, 27 May 2009 08:49:26 +0000 (10:49 +0200)]
ALSA: Fix invalid jiffies check after pause

The hw_ptr_jiffies has to be reset properly to avoid the invalid
check of jiffies delta in snd_pcm_update_hw_ptr*() functions.
Especailly this patch fixes the bogus jiffies check after the puase
and resume.

This patch is a modified version of the original patch by Jaroslav.

Signed-off-by: Takashi Iwai <>
12 years agopowerpc: Fix up dma_alloc_coherent() on platforms without cache coherency.
Benjamin Herrenschmidt [Wed, 27 May 2009 03:50:33 +0000 (13:50 +1000)]
powerpc: Fix up dma_alloc_coherent() on platforms without cache coherency.

The implementation we just revived has issues, such as using a
Kconfig-defined virtual address area in kernel space that nothing
actually carves out (and thus will overlap whatever is there),
or having some dependencies on being self contained in a single
PTE page which adds unnecessary constraints on the kernel virtual
address space.

This fixes it by using more classic PTE accessors and automatically
locating the area for consistent memory, carving an appropriate hole
in the kernel virtual address space, leaving only the size of that
area as a Kconfig option. It also brings some dma-mask related fixes
from the ARM implementation which was almost identical initially but
grew its own fixes.

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc: Minor cleanups of kernel virt address space definitions
Benjamin Herrenschmidt [Wed, 27 May 2009 03:44:50 +0000 (13:44 +1000)]
powerpc: Minor cleanups of kernel virt address space definitions

Make FIXADDR_TOP a compile time constant and cleanup a
couple of definitions relative to the layout of the kernel
address space on ppc32. We also print out that layout at
boot time for debugging purposes.

This is a pre-requisite for properly fixing non-coherent
DMA allocactions.

Signed-off-by: Benjamin Herrenschmidt <>
12 years agopowerpc: Move dma-noncoherent.c from arch/powerpc/lib to arch/powerpc/mm
Benjamin Herrenschmidt [Wed, 27 May 2009 03:36:10 +0000 (13:36 +1000)]
powerpc: Move dma-noncoherent.c from arch/powerpc/lib to arch/powerpc/mm

(pre-requisite to make the next patches more palatable)

Signed-off-by: Benjamin Herrenschmidt <>
12 years agoBlackfin: fix strncmp.o build error
Mike Frysinger [Tue, 26 May 2009 09:03:52 +0000 (05:03 -0400)]
Blackfin: fix strncmp.o build error

Fix some more fallout of the string changes:

  CC      arch/blackfin/lib/strncmp.o
In file included from include/linux/bitmap.h:9,
                 from include/linux/nodemask.h:90,
                 from include/linux/mmzone.h:17,
                 from include/linux/gfp.h:5,
                 from include/linux/kmod.h:23,
                 from include/linux/module.h:14,
                 from arch/blackfin/lib/strncmp.c:14:
include/linux/string.h: In function ‘strstarts’:
include/linux/string.h:132: error: implicit declaration of function ‘strncmp’
make[1]: *** [arch/blackfin/lib/strncmp.o] Error 1

Signed-off-by: Mike Frysinger <>
CC: Rusty Russell <>
12 years agoBlackfin: drop unneeded asm/.gitignore
Mike Frysinger [Wed, 20 May 2009 23:45:39 +0000 (19:45 -0400)]
Blackfin: drop unneeded asm/.gitignore

We don't create a include/asm/mach/ symlink anymore, so we don't need the
.gitignore for it.

Signed-off-by: Mike Frysinger <>
12 years agoBlackfin: ignore generated
Mike Frysinger [Tue, 19 May 2009 14:03:22 +0000 (10:03 -0400)]
Blackfin: ignore generated

Signed-off-by: Mike Frysinger <>
12 years agoMAINTAINERS: drop (subscribers-only) markings on Blackfin lists
Mike Frysinger [Mon, 18 May 2009 08:33:07 +0000 (04:33 -0400)]
MAINTAINERS: drop (subscribers-only) markings on Blackfin lists

All of the Blackfin lists are transparently moderated for non-subscribers.
i.e. there are no annoying notices and people get whitelisted after first
their posting.

Signed-off-by: Mike Frysinger <>
12 years agoMAINTAINERS: update Blackfin items
Mike Frysinger [Sun, 24 May 2009 06:13:15 +0000 (02:13 -0400)]
MAINTAINERS: update Blackfin items

With Bryan Wu having moved on to another job, push the slack onto some
other ADI lackeys.

Signed-off-by: Mike Frysinger <>
12 years agoBlackfin: hook up preadv/pwritev syscalls
Mike Frysinger [Tue, 26 May 2009 08:55:38 +0000 (04:55 -0400)]
Blackfin: hook up preadv/pwritev syscalls

Signed-off-by: Mike Frysinger <>
12 years agocpuidle: fix AMD C1E suspend hang
Shaohua Li [Tue, 19 May 2009 08:09:54 +0000 (16:09 +0800)]
cpuidle: fix AMD C1E suspend hang

When AMD C1E is enabled, local APIC timer will stop even in C1. To avoid
suspend/resume hang, this patch removes C1 and replace it with a cpu_relax() in
suspend/resume path. This hasn't any impact in runtime path.

[ impact: avoid suspend/resume hang in AMD CPU with C1E enabled ]

Tested-by: Dmitry Lyzhyn <>
Signed-off-by: Shaohua Li <>
Signed-off-by: Len Brown <>
12 years agocpuidle: makes AMD C1E work in acpi_idle
Shaohua Li [Tue, 19 May 2009 08:09:42 +0000 (16:09 +0800)]
cpuidle: makes AMD C1E work in acpi_idle

When AMD C1E is enabled, local APIC timer will stop even in C1.
This patch uses broadcast IPI to replace local APIC timer in C1.

[ impact: avoid boot hang in AMD CPU with C1E enabled ]

Tested-by: Dmitry Lyzhyn <>
Signed-off-by: Shaohua Li <>
Signed-off-by: Len Brown <>
12 years agoRevert "powerpc: Rework dma-noncoherent to use generic vmalloc layer"
Benjamin Herrenschmidt [Wed, 27 May 2009 03:33:14 +0000 (13:33 +1000)]
Revert "powerpc: Rework dma-noncoherent to use generic vmalloc layer"

This reverts commit 33f00dcedb0e22cdb156a23632814fc580fcfcf8.

    While it was a good idea to try to use the mm/vmalloc.c allocator instead
    of our own (in fact, ours is itself a dup on an old variant of the vmalloc
    one), unfortunately, the approach is terminally busted since
    dma_alloc_coherent() can be called at interrupt time or in atomic contexts
    and there's little chances we'll make the code in mm/vmalloc.c cope with\       that :-(

    Until we can get the generic code to forbid that idiocy and fix all
    drivers abusing it, we pretty much have no choice but revert to
    our custom virtual space allocator.

    There's also a problem with SMP safety since freeing such mapping
    would require an IPI which cannot be done at interrupt time.

    However, right now, I don't think we support any platform that is
    both SMP and has non-coherent DMA (don't laugh, I know such things
    do exist !) so we can sort that out later.

Signed-off-by: Benjamin Herrenschmidt <>
12 years agodrm/i915: Apply a big hammer to 865 GEM object CPU cache flushing.
Eric Anholt [Wed, 27 May 2009 01:46:16 +0000 (18:46 -0700)]
drm/i915: Apply a big hammer to 865 GEM object CPU cache flushing.

On the 865, but not the 855, the clflush we do appears to not actually make
it out to the hardware all the time.  An easy way to safely reproduce was
X -retro, which would show that some of the blits involved in drawing the
lovely root weave didn't make it out to the hardware.  Those blits are 32
bytes each, and 1-2 would be missing at various points around the screen.
Other experimentation (doing more clflush, doing more AGP chipset flush,
poking at some more device registers to maybe trigger more flushing) didn't
help.  krh came up with the wbinvd as a way to successfully get all those
blits to appear.

Signed-off-by: Eric Anholt <>
12 years agodrm/i915: Fix tiling pitch handling on 8xx.
Eric Anholt [Wed, 27 May 2009 00:44:56 +0000 (17:44 -0700)]
drm/i915: Fix tiling pitch handling on 8xx.

The pitch field is an exponent on pre-965, so we were rejecting buffers
on 8xx that we shouldn't have.  915 got lucky in that the largest legal
value happened to match (8KB / 512 = 0x10), but 8xx has a smaller tile width.
Additionally, we programmed that bad value into the register on 8xx, so the
only pitch that would work correctly was 4096 (512-1023 pixels), while others
would probably give bad rendering or hangs.

Signed-off-by: Eric Anholt <>
fd.o bug #20473.

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Wed, 27 May 2009 01:03:40 +0000 (18:03 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://
  tomoyo: add missing call to cap_bprm_set_creds

12 years agotomoyo: add missing call to cap_bprm_set_creds
Herton Ronaldo Krzesinski [Tue, 26 May 2009 03:15:53 +0000 (12:15 +0900)]
tomoyo: add missing call to cap_bprm_set_creds

cap_bprm_set_creds() has to be called from security_bprm_set_creds().
TOMOYO forgot to call cap_bprm_set_creds() from tomoyo_bprm_set_creds()
and suid executables were not being working.

Make sure we call cap_bprm_set_creds() with TOMOYO, to set credentials
properly inside tomoyo_bprm_set_creds().

Signed-off-by: Herton Ronaldo Krzesinski <>
Acked-by: Tetsuo Handa <>
Signed-off-by: James Morris <>
12 years agoMerge branch 'x86-fixes-for-linus' of git://
Linus Torvalds [Tue, 26 May 2009 22:06:12 +0000 (15:06 -0700)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://
  x86: avoid back to back on_each_cpu in cpa_flush_array
  x86, relocs: ignore R_386_NONE in kernel relocation entries

12 years agoMerge branch 'for-linus' of git://
Linus Torvalds [Tue, 26 May 2009 21:48:36 +0000 (14:48 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/anholt/drm-intel

* 'for-linus' of git://
  drm/i915: Add support for VGA load detection (pre-945).
  drm/i915: Use an I2C algo to do the flip to SDVO DDC bus.
  drm/i915: Determine type before initialising connector
  drm/i915: Return SDVO LVDS VBT mode if no EDID modes are detected.
  drm/i915: Fetch SDVO LVDS mode lines from VBT, then reserve them
  i915: support 8xx desktop cursors
  drm/i915: allocate large pointer arrays with vmalloc

12 years agoMerge branch 'core-fixes-for-linus' of git://
Linus Torvalds [Tue, 26 May 2009 21:48:03 +0000 (14:48 -0700)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://
  oprofile: fix cpu buffer size

12 years agox86: avoid back to back on_each_cpu in cpa_flush_array
Pallipadi, Venkatesh [Tue, 26 May 2009 17:33:35 +0000 (10:33 -0700)]
x86: avoid back to back on_each_cpu in cpa_flush_array

Cleanup cpa_flush_array() to avoid back to back on_each_cpu() calls.

[ Impact: optimizes fix 0af48f42df15b97080b450d24219dd95db7b929a ]

Signed-off-by: Venkatesh Pallipadi <>
Signed-off-by: H. Peter Anvin <>