]> err.no Git - linux-2.6/log
linux-2.6
16 years agopowerpc: Fix CMM page loaning on 64k page kernel with 4k hardware pages
Brian King [Fri, 15 Aug 2008 19:09:33 +0000 (05:09 +1000)]
powerpc: Fix CMM page loaning on 64k page kernel with 4k hardware pages

If the firmware page size used for collaborative memory overcommit
is 4k, but the kernel is using 64k pages, the page loaning is currently
broken as it only marks the first 4k page of each 64k page as loaned.
This fixes this to iterate through each 4k page and mark them all as
loaned/active.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
16 years agopowerpc: Make CMO paging space pool ID and page size available
Robert Jennings [Fri, 15 Aug 2008 19:07:31 +0000 (05:07 +1000)]
powerpc: Make CMO paging space pool ID and page size available

During platform setup, save off the primary/secondary paging space
pool IDs and the page size.  Added accessors in hvcall.h for these
variables.  This is needed for a subsequent fix.

Submitted-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
16 years agopowerpc: Fix lockdep IRQ tracing bug
Benjamin Herrenschmidt [Fri, 15 Aug 2008 07:11:31 +0000 (17:11 +1000)]
powerpc: Fix lockdep IRQ tracing bug

A small bogon sneaked into the ppc64 lockdep support.  A test is
branching slightly off causing a clobbered register value to
overwrite the irq state under some circumstances.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
16 years agopowerpc: Fix TLB invalidation on boot on 32-bit
Rocky Craig [Thu, 14 Aug 2008 13:11:54 +0000 (23:11 +1000)]
powerpc: Fix TLB invalidation on boot on 32-bit

The intent of "flush_tlbs" is to invalidate all TLB entries by doing a
TLB invalidate instruction for all pages in the address range 0 to
0x00400000.  A loop counter is set up at the high value and
decremented by page size.  However, the loop is only done once as the
sense of the conditional branch at the loop end does not match the
setup/decrement.  This fixes it to do the whole range by correcting
the branch condition.

Signed-off-by: Rocky Craig <rocky.craig@hp.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
16 years agopowerpc: Fix loss of vdso on fork on 32-bit
Benjamin Herrenschmidt [Tue, 12 Aug 2008 07:03:26 +0000 (17:03 +1000)]
powerpc: Fix loss of vdso on fork on 32-bit

When we fork, init_new_context() improperly resets the vdso_base
of the new context to 0.  That means that the new process loses
access to the vdso for signal trampolines.

The initialization should be unnecessary anyway as the context
on a fresh mm should be 0 in the first place and binfmt_elf
will initialize that value for a newly loaded process.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney...
Linus Torvalds [Fri, 15 Aug 2008 22:31:23 +0000 (15:31 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/cooloney/blackfin-2.6: (33 commits)
  Blackfin arch: hook up some missing new system calls
  Blackfin arch: fix missing digit in SCLK range checking
  Blackfin arch: do not muck with the UART during boot -- let the serial driver worry about it
  Blackfin arch: clear EMAC_SYSTAT during IRQ init rather than early head.S as we dont need it setup that early
  Blackfin arch: use %pF when printing out the double fault address so we get symbol names
  Blackfin arch: add support for the BlackStamp board
  Blackfin arch: Allow ins functions to have a low latency version
  Blackfin arch: Print out doublefault addresses, so debug can occur
  Blackfin arch: shuffle related prototypes together -- no functional changes
  Blackfin arch: move fixed code defines into fixed_code.h as very few things actually need to know these details
  Blackfin arch: mark some functions as __init as they are only called from __init functions
  Blackfin arch: delete dead prototypes
  Blackfin arch: cleanup cache lock code
  Blackfin arch: workaround SIC_IWR1 reset bug, by keeping MDMA0/1 always enabled in SIC_IWR1.
  Blackfin arch: Fix bug - when expanding the trace buffer, it does not print out the decoded instruction.
  Blackfin arch: Fix Bug - System with EMAC driver enabled - Core not idling
  Blackfin arch: delete unused cache functions
  Blackfin arch: convert L2 defines to be the same as the L1 defines
  Blackfin arch: unify the duplicated portions of __start and split mach-specific pieces into _mach_early_start where they will be easier to trim over time
  Blackfin arch: add asm/thread_info.h for THREAD_SIZE define
  ...

16 years agoMerge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak...
Linus Torvalds [Fri, 15 Aug 2008 19:47:16 +0000 (12:47 -0700)]
Merge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6

* 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6:
  cpuidle: Make ladder governor honor latency requirements fully
  cpuidle: Menu governor fix wrong usage of measured_us
  cpuidle: Do not use poll_idle unless user asks for it
  x86: Fix ioremap off by one BUG

16 years agoMerge branch 'cpuidle' into release-2.6.27
Andi Kleen [Fri, 15 Aug 2008 19:26:12 +0000 (21:26 +0200)]
Merge branch 'cpuidle' into release-2.6.27

16 years agocpuidle: Make ladder governor honor latency requirements fully
venkatesh.pallipadi@intel.com [Thu, 31 Jul 2008 02:21:44 +0000 (19:21 -0700)]
cpuidle: Make ladder governor honor latency requirements fully

ladder governor only honored latency requirement when promoting C-states.
Instead. it should check for latency requirement on each idle call,
and demote to appropriate C-state when there is a latency requirement change.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agocpuidle: Menu governor fix wrong usage of measured_us
venkatesh.pallipadi@intel.com [Thu, 31 Jul 2008 02:21:43 +0000 (19:21 -0700)]
cpuidle: Menu governor fix wrong usage of measured_us

There is a bug in menu governor where we have
if (data->elapsed_us < data->elapsed_us + measured_us)

with measured_us already having elapsed_us added in tickless case here
unsigned int measured_us =
cpuidle_get_last_residency(dev) + data->elapsed_us;

Also, it should be last_residency, not measured_us, that need to be used to
do comparing and distinguish between expected & non-expected events.

Refactor menu_reflect() to fix these two problems.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Wei Gang <gang.wei@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agocpuidle: Do not use poll_idle unless user asks for it
venkatesh.pallipadi@intel.com [Thu, 31 Jul 2008 02:21:42 +0000 (19:21 -0700)]
cpuidle: Do not use poll_idle unless user asks for it

poll_idle was added to CPUIDLE, just as a low latency idle handler, to be
used in cases when user desires CPUs not to enter any idle state at all. It
was supposed to be a run time idle=poll option to the user. But, it was indeed
getting used during normal menu and ladder governor default case, with no
special user setting (Reported by Linus Torvalds).

Change below ensures that poll_idle will not be used unless user explicitly
asks pm_qos infrastructure for zero latency requirement.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Fri, 15 Aug 2008 18:52:40 +0000 (11:52 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: wm8990: Implement speaker volume PGA
  ALSA: wm8990: Fix routing of left DAC to speaker mixer
  ALSA: virtuoso: add Xonar D1 support

16 years agohwmon-vid: Fix AMD K8 VID decoding
Jean Delvare [Fri, 15 Aug 2008 08:58:05 +0000 (10:58 +0200)]
hwmon-vid: Fix AMD K8 VID decoding

Not all AMD K8 have 6 VID pins, contrary to what was assumed in
commit 116d0486bdefc11f71e567cadf0c47f788b4dd06. This commit broke
support of older CPU models which have only 5 VID pins:
http://bugzilla.kernel.org/show_bug.cgi?id=11329

We need two entries in the hwmon-vid table, one for 5-bit VID models
(K8 revision <= E) and one for 6-bit VID models (K8 revision >= F).
This fixes bug #11329.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Frank Myhr <fmyhr@fhmtech.com>
Tested-by: Jean-Luc Coulon <jean.luc.coulon@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agox86: add MAP_STACK mmap flag
Ingo Molnar [Wed, 13 Aug 2008 16:02:18 +0000 (18:02 +0200)]
x86: add MAP_STACK mmap flag

as per this discussion:

   http://lkml.org/lkml/2008/8/12/423

Pardo reported that 64-bit threaded apps, if their stacks exceed the
combined size of ~4GB, slow down drastically in pthread_create() - because
glibc uses MAP_32BIT to allocate the stacks. The use of MAP_32BIT is
a legacy hack - to speed up context switching on certain early model
64-bit P4 CPUs.

So introduce a new flag to be used by glibc instead, to not constrain
64-bit apps like this.

glibc can switch to this new flag straight away - it will be ignored
by the kernel. If those old CPUs ever matter to anyone, support for
it can be implemented.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Ulrich Drepper <drepper@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Fri, 15 Aug 2008 18:02:35 +0000 (11:02 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  [CIFS] mount of IPC$ breaks with iget patch
  [CIFS] remove trailing whitespace
  [CIFS] if get root inode fails during mount, cleanup tree connection

16 years agoMerge branch 'ioremap' into release-2.6.27
Andi Kleen [Fri, 15 Aug 2008 17:38:47 +0000 (19:38 +0200)]
Merge branch 'ioremap' into release-2.6.27

16 years agotty: remove resize window special case
Alan Cox [Fri, 15 Aug 2008 09:39:38 +0000 (10:39 +0100)]
tty: remove resize window special case

This moves it to being a tty operation. That removes special cases and now
also means that resize can be picked up by um and other non vt consoles
which may have a resize operation.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge branch 'linux-next' of git://git.infradead.org/~dedekind/ubifs-2.6
Linus Torvalds [Fri, 15 Aug 2008 17:33:07 +0000 (10:33 -0700)]
Merge branch 'linux-next' of git://git.infradead.org/~dedekind/ubifs-2.6

* 'linux-next' of git://git.infradead.org/~dedekind/ubifs-2.6: (29 commits)
  UBIFS: xattr bugfixes
  UBIFS: remove unneeded check
  UBIFS: few commentary fixes
  UBIFS: fix budgeting request alignment in xattr code
  UBIFS: improve arguments checking in debugging messages
  UBIFS: always set i_generation to 0
  UBIFS: correct spelling of "thrice".
  UBIFS: support splice_write
  UBIFS: minor tweaks in commit
  UBIFS: reserve more space for index
  UBIFS: print pid in dump function
  UBIFS: align inode data to eight
  UBIFS: improve budgeting checks
  UBIFS: correct orphan deletion order
  UBIFS: fix typos in comments
  UBIFS: do not union creat_sqnum and del_cmtno
  UBIFS: optimize deletions
  UBIFS: increment commit number earlier
  UBIFS: remove another unneeded function parameter
  UBIFS: remove unneeded function parameter
  ...

16 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Fri, 15 Aug 2008 16:30:24 +0000 (09:30 -0700)]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: cancel check/repair requests when recovery is needed
  Allow raid10 resync to happening in larger chunks.
  Allow faulty devices to be removed from a readonly array.
  Don't let a blocked_rdev interfere with read request in raid5/6
  Fail safely when trying to grow an array with a write-intent bitmap.
  Restore force switch of md array to readonly at reboot time.
  Make writes to md/safe_mode_delay immediately effective.

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Fri, 15 Aug 2008 16:28:16 +0000 (09:28 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: xilinx_ps2 - fix warning
  Input: bcm5974 - implement autosuspend support
  Input: bcm5974 - add driver for Macbook Air and Pro Penryn touchpads
  Input: paper over a bug in Synaptics X driver
  Input: evdev - split EVIOCGBIT handlig into a separate function
  Input: i8042 - Add Dritek quirk for Acer TravelMate 4280
  Input: xpad - add Pelican Eclipse D-Pad to the list of devices
  Input: gpio-keys - make gpio_keys_device_driver static
  Input: gpio-keys - fix possible NULL pointer dereference
  Input: wm97xx - enable sub-drivers by default

16 years agoMerge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak...
Linus Torvalds [Fri, 15 Aug 2008 16:26:37 +0000 (09:26 -0700)]
Merge branch 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6

* 'release-2.6.27' of git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-acpi-2.6:
  ACPI: Fix thermal shutdowns
  ACPI: bounds check IRQ to prevent memory corruption
  ACPI: Avoid bogus EC timeout when EC is in Polling mode
  ACPI : Add the EC dmi table to fix the incorrect ECDT table
  ACPI: Properly clear flags on false-positives and send uevent on sudden unplug
  acpi: trivial cleanups
  acer-wmi: Fix wireless and bluetooth on early AMW0 v2 laptops
  ACPI: WMI: Set instance for query block calls
  ACPICA: Additional error checking for pathname utilities
  ACPICA: Fix possible memory leak in Unload() operator
  ACPICA: Fix memory leak when deleting thermal/processor objects

16 years agoalpha: move include/asm-alpha to arch/alpha/include/asm
Linus Torvalds [Fri, 15 Aug 2008 16:19:40 +0000 (09:19 -0700)]
alpha: move include/asm-alpha to arch/alpha/include/asm

Sam Ravnborg did the build-test that the direct header file move works,
I'm just committing it.

This is a pure move:

mkdir arch/alpha/include
git mv include/asm-alpha arch/alpha/include/asm

with no other changes.

Requested-and-tested-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agox86: Fix ioremap off by one BUG
Andi Kleen [Fri, 15 Aug 2008 16:12:47 +0000 (18:12 +0200)]
x86: Fix ioremap off by one BUG

Jean Delvare's machine triggered this BUG

acpi_os_map_memory phys ffff0000 size 65535
------------[ cut here ]------------
kernel BUG at arch/x86/mm/pat.c:233!

with ACPI in the backtrace.

Adding some debugging output showed that ACPI calls

acpi_os_map_memory phys ffff0000 size 65535

And ioremap/PAT does this check in 32bit, so addr+size wraps and the BUG
in reserve_memtype() triggers incorrectly.

        BUG_ON(start >= end); /* end is exclusive */

But reserve_memtype already uses u64:

int reserve_memtype(u64 start, u64 end,

so the 32bit truncation must happen in the caller. Presumably in ioremap
when it passes this information to reserve_memtype().

This patch does this computation in 64bit.

http://bugzilla.kernel.org/show_bug.cgi?id=11346

Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoALSA: wm8990: Implement speaker volume PGA
Mark Brown [Fri, 15 Aug 2008 15:22:33 +0000 (16:22 +0100)]
ALSA: wm8990: Implement speaker volume PGA

The latest revisions of the WM8990 provide a programmable gain amplifier
for the speaker - configure the register cache and implement controls
for this. Older revisions of the device ignore writes to these controls.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
16 years agoALSA: wm8990: Fix routing of left DAC to speaker mixer
Mark Brown [Fri, 15 Aug 2008 15:22:32 +0000 (16:22 +0100)]
ALSA: wm8990: Fix routing of left DAC to speaker mixer

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
16 years agoomfs: fix oops when file metadata is corrupted
Bob Copeland [Fri, 15 Aug 2008 07:40:47 +0000 (00:40 -0700)]
omfs: fix oops when file metadata is corrupted

A fuzzed fileystem image failed with OMFS when the extent count was
used in a loop without being checked against the max number of extents.
It also provoked a signed division for an array index that was checked
as if unsigned, leading to index by -1.

omfsck will be updated to fix these cases, in the meantime bail out
gracefully.

Reported-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoomfs: fix potential oops when directory size is corrupted
Bob Copeland [Fri, 15 Aug 2008 07:40:46 +0000 (00:40 -0700)]
omfs: fix potential oops when directory size is corrupted

Testing with a modified fsfuzzer reveals a couple of locations in omfs
where filesystem variables are ultimately used as loop counters with
insufficient sanity checking.  In this case, dir->i_size is used to
compute the number of buckets in the directory hash.  If too large,
readdir will overrun a buffer.

Since it's an invariant that dir->i_size is equal to the sysblock
size, and we already sanity check that, just use that value instead.
This fixes the following oops:

BUG: unable to handle kernel paging request at c978e004
IP: [<c032298e>] omfs_readdir+0x18e/0x32f
Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC
Modules linked in:

Pid: 4796, comm: ls Not tainted (2.6.27-rc2 #12)
EIP: 0060:[<c032298e>] EFLAGS: 00010287 CPU: 0
EIP is at omfs_readdir+0x18e/0x32f
EAX: c978d000 EBX: 00000000 ECX: cbfcfaf8 EDX: cb2cf100
ESI: 00001000 EDI: 00000800 EBP: cb2d3f68 ESP: cb2d3f0c
 DS: 007b ES: 007b FS: 0000 GS: 0033 SS: 0068
Process ls (pid: 4796, ti=cb2d3000 task=cb175f40 task.ti=cb2d3000)
Stack: 00000002 00000000 00000000 c018a820 cb2d3f94 cb2cf100 cbfb0000 ffffff10
       cbfb3b80 cbfcfaf8 000001c9 00000a09 00000000 00000000 00000000 cbfcfbc8
       c9697000 cbfb3b80 22222222 00001000 c08e6cd0 cb2cf100 cbfb3b80 cb2d3f88
Call Trace:
 [<c018a820>] ? filldir64+0x0/0xcd
 [<c018a9f2>] ? vfs_readdir+0x56/0x82
 [<c018a820>] ? filldir64+0x0/0xcd
 [<c018aa7c>] ? sys_getdents64+0x5e/0xa0
 [<c01038bd>] ? sysenter_do_call+0x12/0x31
 =======================
Code: 00 89 f0 89 f3 0f ac f8 14 81 e3 ff ff 0f 00 48 8d
14 c5 b8 01 00 00 89 45 cc 89 55 f0 e9 8c 01 00 00 8b 4d c8 8b 75 f0 8b
41 18 <8b> 54 30 04 8b 04 30 31 f6 89 5d dc 89 d1 8b 55 b8 0f c8 0f c9

Reported-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agocompletions: uninline try_wait_for_completion and completion_done
Dave Chinner [Fri, 15 Aug 2008 07:40:44 +0000 (00:40 -0700)]
completions: uninline try_wait_for_completion and completion_done

m68k fails to build with these functions inlined in completion.h.  Move
them out of line into sched.c and export them to avoid this problem.

Signed-off-by: Dave Chinner <david@fromorbit.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agospi: bugfix spi_add_device() with duplicate chipselects
David Brownell [Fri, 15 Aug 2008 07:40:44 +0000 (00:40 -0700)]
spi: bugfix spi_add_device() with duplicate chipselects

When reviewing a recent patch I noticed a potential trouble spot in the
registration of new SPI devices.  The SPI master driver is told to set
the device up before adding it to the driver model, so that it's always
properly set up when probe() is called.  (This is important, because in
the case of inverted chipselects, this device can make the bus misbehave
until it's properly deselected.  It's got to be set up even if no driver
binds to the device.)

The trouble spot is that it doesn't first verify that no other device
has been added using that chipselect.  If such a device has been added,
its configuration gets trashed.  (Fortunately this has not been a common
error!)

The fix here adds an explicit check, and a mutex to protect the relevant
critical region.

[akpm@linux-foundation.org: make the lock local to spi_add_device()]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agofs/inode.c: properly init address_space->writeback_index
Chris Mason [Fri, 15 Aug 2008 07:40:43 +0000 (00:40 -0700)]
fs/inode.c: properly init address_space->writeback_index

write_cache_pages() uses i_mapping->writeback_index to pick up where it
left off the last time a given inode was found by pdflush or
balance_dirty_pages (or anyone else who sets wbc->range_cyclic)

alloc_inode() should set it to a sane value so that writeback doesn't
start in the middle of a file.  It is somewhat difficult to notice the bug
since write_cache_pages will loop around to the start of the file and the
elevator helps hide the resulting seeks.

For whatever reason, Btrfs hits this often.  Unpatched, untarring 30
copies of the linux kernel in series runs at 47MB/s on a single sata
drive.  With this fix, it jumps to 62MB/s.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMAINTAINERS: add maintainers for GRU, XPC, XPNET and XP
Jack Steiner [Fri, 15 Aug 2008 07:40:42 +0000 (00:40 -0700)]
MAINTAINERS: add maintainers for GRU, XPC, XPNET and XP

Add MAINTAINERS for GRU, XPNET, XPC and XP drivers.

Signed-off-by: Jack Steiner <steiner@sgi.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agocoretemp: recognize Nehalem CPUs
Darrick J. Wong [Fri, 15 Aug 2008 07:40:41 +0000 (00:40 -0700)]
coretemp: recognize Nehalem CPUs

Add in the CPUID for Nehalem chips.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Cc: Kent Liu <kent.liu@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoibmaem: don't query the entire sensor repository when reading energy meter
Darrick J. Wong [Fri, 15 Aug 2008 07:40:41 +0000 (00:40 -0700)]
ibmaem: don't query the entire sensor repository when reading energy meter

Currently, all sensors are read when the energy meter is queried via
sysfs.  This introduces a considerable amount of delay and variation in
the sysfs reading, which is not desirable when trying to profile energy
use.  Therefore, read only the energy meters when a sysfs query comes in
for them, and don't cache the results so that we always get the latest
reading.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoibmaem: prevent infinite probing loop on x3650 M2 systems
Darrick J. Wong [Fri, 15 Aug 2008 07:40:40 +0000 (00:40 -0700)]
ibmaem: prevent infinite probing loop on x3650 M2 systems

On older machines, probing for a nonexistent AEM interface returned an
IPMI error; when we saw this, we'd stop probing.  On the x3650 M2 and
(presumably) later, we are returned a value indicating success and a
buffer full of garbage or zeroes.  This causes the probe function to run
in an infinite loop.  To fix this, we add one last check--if the
interface number we're looking for is higher than the number of
interfaces that AEM claims to have, stop probing.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoibmaem: update the documentation to reflect the current name
Darrick J. Wong [Fri, 15 Aug 2008 07:40:40 +0000 (00:40 -0700)]
ibmaem: update the documentation to reflect the current name

Minor documentation update to reflect the current full name of the power
management hardware interface and reflows the text a bit.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoabituguru3: prefer DMI probing to manual probing
Alistair John Strachan [Fri, 15 Aug 2008 07:40:39 +0000 (00:40 -0700)]
abituguru3: prefer DMI probing to manual probing

Previously the driver was only using DMI to prevent smbus probing on
non-Abit motherboards.  However, since the manual probing method is
brittle and prone to failure on some Abit motherboards (esp.  the Abit
IP35 Pro) it is better to use DMI to also read the board name and then
decide whether or not to probe the bus.

At the moment, we do not have a list of valid DMI name strings to use
for existing and supported motherboards.  This patch only implements DMI
probing for the IP35 Pro.  For motherboards that can not yet use DMI
probing, a warning will be printed to the kernel log asking those users
to email me their dmidecode output.

The existing manual probing mechanism will be used if CONFIG_DMI is not
enabled, if DMI probing fails (for DMI-unsupported motherboards), or if
DMI probing fails and the "force" option is set (for DMI-supported
motherboards).  Ideally in the longer term this manual probing method
would be removed.

This patch should be safe to apply as it does not change the probing
behaviour for most of the supported motherboards, just the IP35 Pro,
which already has regressions filed against it in 2.6.26.

Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11212

Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk>
Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoabituguru3: update MAINTAINERS
Alistair John Strachan [Fri, 15 Aug 2008 07:40:37 +0000 (00:40 -0700)]
abituguru3: update MAINTAINERS

Hans passed maintainership of the abituguru3 hwmon driver onto me.  Add
a new entry to the MAINTAINERS file for the abituguru3 driver and assign
it to me.  Also update the existing UGURU entry to indicate that Hans is
only responsible for the abituguru driver.

Signed-off-by: Alistair John Strachan <alistair@devzero.co.uk>
Acked-by: Hans de Goede <j.w.r.degoede@hhs.nl>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoi5k_amb: provide labels for temperature sensors
Darrick J. Wong [Fri, 15 Aug 2008 07:40:36 +0000 (00:40 -0700)]
i5k_amb: provide labels for temperature sensors

Export the sensor -> channel/dimm mapping in tempX_label.

Signed-off-by: Darrick J. Wong <djwong@us.ibm.com>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agohwmon: ADC124S501 generic driver
Marc Pignat [Fri, 15 Aug 2008 07:40:34 +0000 (00:40 -0700)]
hwmon: ADC124S501 generic driver

SPI driver for analog to digital converters national semiconductor
ADC081S101, ADC124S501, ...

Code for 8 channels by Tobias Himmer.

This driver adds support for National Semiconductor ADC<bb><c>S<sss> chip
family, where:

 * bb  is the resolution in number of bits (8, 10, 12)
 * c   is the number of channels (1, 2, 4, 8)
 * sss is the maximum conversion speed (021 for 200 kSPS, 051 for 500
   kSPS and 101 for 1 MSPS)

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Cc: Tobias Himmer <tobias@himmer-online.de>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: David Brownell <david-b@pacbell.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agodrivers/hwmon/w83791d.c: fix unused var warning
Michael Borisov [Fri, 15 Aug 2008 07:40:32 +0000 (00:40 -0700)]
drivers/hwmon/w83791d.c: fix unused var warning

drivers/hwmon/w83791d.c: In function `w83791d_probe':
drivers/hwmon/w83791d.c:1049: warning: unused variable `val1'

Signed-off-by: Michael Borisov <niro@tut.by>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoapplesmc: add support for Macbook
Guilherme M. Schroeder [Fri, 15 Aug 2008 07:40:32 +0000 (00:40 -0700)]
applesmc: add support for Macbook

Add support for Macbook v3 (sensors and accelerometer).

Signed-off-by: Nicolas Boichat <nicolas@boichat.ch>
Cc: "Mark M. Hoffman" <mhoffman@lightlink.com>
Cc: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoapplesmc: support for Intel iMac
Roberto De Ioris [Fri, 15 Aug 2008 07:40:30 +0000 (00:40 -0700)]
applesmc: support for Intel iMac

This adds support for fans and temperature sensors on intel iMac.

Tested on iMac 24" 2.8ghz (iMac8,1), it supports the following sensors:

cpu A
ambient
gpu
gpu diode
gpu heatsink
hd bay 1
memory controller
optical drive
power

Signed-off-by: Roberto De Ioris <roberto@unbit.it>
Cc: Nicolas Boichat <nicolas@boichat.ch>
Cc: Jean Delvare <khali@linux-fr.org>
Cc: Mark M. Hoffman <mhoffman@lightlink.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agofreescale DIU: bug fix: add sanity check for AOI position
York Sun [Fri, 15 Aug 2008 07:40:29 +0000 (00:40 -0700)]
freescale DIU: bug fix: add sanity check for AOI position

AOI position cannot be negative.

Signed-off-by: York Sun <yorksun@freescale.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agofreescale DIU: add virtual resolution and panning support
York Sun [Fri, 15 Aug 2008 07:40:28 +0000 (00:40 -0700)]
freescale DIU: add virtual resolution and panning support

Application can now have the virtual resoltuion and use FBIOPAN_DISPLAY
ioctl to pan.

Signed-off-by: York Sun <yorksun@freescale.com>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec: use a mutex for locking rather than xchg()
Andrew Morton [Fri, 15 Aug 2008 07:40:27 +0000 (00:40 -0700)]
kexec: use a mutex for locking rather than xchg()

Functionally the same, but more conventional.

Cc: Huang Ying <ying.huang@intel.com>
Tested-by: Vivek Goyal <vgoyal@redhat.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec jump: fix for ftrace
Huang Ying [Fri, 15 Aug 2008 07:40:26 +0000 (00:40 -0700)]
kexec jump: fix for ftrace

Ftrace depends on some processor state that we destroyed during kexec and
restored by restore_processor_state().  So save_processor_state() and
restore_processor_state() are moved into machine_kexec() and ftrace is
restored after restore_processor_state().

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec jump: __ftrace_enabled_save/restore
Huang Ying [Fri, 15 Aug 2008 07:40:25 +0000 (00:40 -0700)]
kexec jump: __ftrace_enabled_save/restore

Add __ftrace_enabled_save/restore, used to disable ftrace for a while.
Now, this is used by kexec jump, which need a version without lock, for
general situation, a locked version should be used.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec jump: in sync with hibernation implementation
Huang Ying [Fri, 15 Aug 2008 07:40:24 +0000 (00:40 -0700)]
kexec jump: in sync with hibernation implementation

Add device_pm_lock() and device_pm_unlock() in kernel_kexec() in sync with
current hibernation implementation.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec jump: remove duplication of kexec_restart_prepare()
Huang Ying [Fri, 15 Aug 2008 07:40:24 +0000 (00:40 -0700)]
kexec jump: remove duplication of kexec_restart_prepare()

Call kernel_restart_prepare() in kernel_kexec() instead of duplicating the
code.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Pavel Machek <pavel@suse.cz>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec jump: check code size in control page
Huang Ying [Fri, 15 Aug 2008 07:40:23 +0000 (00:40 -0700)]
kexec jump: check code size in control page

Kexec/Kexec-jump require code size in control page is less than
PAGE_SIZE/2.  This patch add link-time checking for this.

ASSERT() of ld link script is used as the link-time checking mechanism.

[akpm@linux-foundation.org: build fix]
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE
Huang Ying [Fri, 15 Aug 2008 07:40:22 +0000 (00:40 -0700)]
kexec jump: rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE

Rename KEXEC_CONTROL_CODE_SIZE to KEXEC_CONTROL_PAGE_SIZE, because control
page is used for not only code on some platform.  For example in kexec
jump, it is used for data and stack too.

[akpm@linux-foundation.org: unbreak powerpc and arm, finish conversion]
Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec jump: clean up #ifdef and comments
Huang Ying [Fri, 15 Aug 2008 07:40:21 +0000 (00:40 -0700)]
kexec jump: clean up #ifdef and comments

Move if (kexec_image->preserve_context) { ...  } into #ifdef
CONFIG_KEXEC_JUMP to make code looks cleaner.

Fix no longer correct comments of kernel_kexec().

Signed-off-by: Huang Ying <ying.huang@intel.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agokexec: fix compilation warning on xchg(&kexec_lock, 0) in kernel_kexec()
Huang Ying [Fri, 15 Aug 2008 07:40:20 +0000 (00:40 -0700)]
kexec: fix compilation warning on xchg(&kexec_lock, 0) in kernel_kexec()

kernel/kexec.c: In function 'kernel_kexec':
kernel/kexec.c:1506: warning: value computed is not used

Signed-off-by: Huang Ying <ying.huang@intel.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agosuspend: fix section mismatch warning - register_nosave_region
Marcin Slusarz [Fri, 15 Aug 2008 07:40:19 +0000 (00:40 -0700)]
suspend: fix section mismatch warning - register_nosave_region

WARNING: vmlinux.o(.text+0xe684): Section mismatch in reference from the function register_nosave_region() to the function .init.text:__register_nosave_region()
  The function register_nosave_region() references
  the function __init __register_nosave_region().
  This is often because register_nosave_region lacks a __init
  annotation or the annotation of __register_nosave_region is wrong.

register_nosave_region calls __init function and is called only from
__init functions

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Acked-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoDocumentation/vm/page_migration: update reference to numa_maps + fix download URI
Michael Kerrisk [Fri, 15 Aug 2008 07:40:18 +0000 (00:40 -0700)]
Documentation/vm/page_migration: update reference to numa_maps + fix download URI

With man-pages-3.07, the numa_maps documentation home is now proc(5), so
the reference in Documentation/vm/page_migration needs updating.
(Cliff/Lee are removing numa_maps.5 from the numactl package.) Also, the
download location for the numactl package changed a while back.  This
patch fixes both things, as well as a typo (provided-->provides).

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Cc: Cliff Wickman <cpw@sgi.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agobootmem allocator: alloc_bootmem_core(): page-align the end offset
Mikulas Patocka [Fri, 15 Aug 2008 07:40:17 +0000 (00:40 -0700)]
bootmem allocator: alloc_bootmem_core(): page-align the end offset

This is the minimal sequence that jams the allocator:

void *p, *q, *r;
p = alloc_bootmem(PAGE_SIZE);
q = alloc_bootmem(64);
free_bootmem(p, PAGE_SIZE);
p = alloc_bootmem(PAGE_SIZE);
r = alloc_bootmem(64);

after this sequence (assuming that the allocator was empty or page-aligned
before), pointer "q" will be equal to pointer "r".

What's hapenning inside the allocator:
p = alloc_bootmem(PAGE_SIZE);
in allocator: last_end_off == PAGE_SIZE, bitmap contains bits 10000...
q = alloc_bootmem(64);
in allocator: last_end_off == PAGE_SIZE + 64, bitmap contains 11000...
free_bootmem(p, PAGE_SIZE);
in allocator: last_end_off == PAGE_SIZE + 64, bitmap contains 01000...
p = alloc_bootmem(PAGE_SIZE);
in allocator: last_end_off == PAGE_SIZE, bitmap contains 11000...
r = alloc_bootmem(64);

and now:

it finds bit "2", as a place where to allocate (sidx)

it hits the condition

if (bdata->last_end_off && PFN_DOWN(bdata->last_end_off) + 1 == sidx))
start_off = ALIGN(bdata->last_end_off, align);

-you can see that the condition is true, so it assigns start_off =
ALIGN(bdata->last_end_off, align); (that is PAGE_SIZE) and allocates
over already allocated block.

With the patch it tries to continue at the end of previous allocation only
if the previous allocation ended in the middle of the page.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Johannes Weiner <hannes@saeurebad.de>
Cc: David Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge branches 'acpica-release-fixes', 'ec-fix', 'dock', 'irq-bounds', 'thermal-fix...
Andi Kleen [Fri, 15 Aug 2008 01:30:00 +0000 (03:30 +0200)]
Merge branches 'acpica-release-fixes', 'ec-fix', 'dock', 'irq-bounds', 'thermal-fix', 'wmi' and 'acpi-cleanups' into release-2.6.27

16 years agoACPI: Fix thermal shutdowns
Milan Broz [Tue, 12 Aug 2008 15:48:27 +0000 (17:48 +0200)]
ACPI: Fix thermal shutdowns

Do not use unsigned int if there is test for negative number...

See drivers/acpi/processor_perflib.c
  static unsigned int ignore_ppc = -1;
...
  if (event == CPUFREQ_START && ignore_ppc <= 0) {
       ignore_ppc = 0;
...

Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPI: bounds check IRQ to prevent memory corruption
Bjorn Helgaas [Fri, 1 Aug 2008 21:58:17 +0000 (15:58 -0600)]
ACPI: bounds check IRQ to prevent memory corruption

acpi_penalize_isa_irq() should validate irq before using it to
index the acpi_irq_penalty[] table.

Here's the path I'm concerned about:

    pnpacpi_parse_allocated_irqresource()
    {
...
irq = acpi_register_gsi(gsi, triggering, polarity);
if (irq >= 0)
pcibios_penalize_isa_irq(irq, 1);

There's no guarantee that acpi_register_gsi() will return an IRQ
within the bounds of acpi_irq_penalty[].

I have not seen a failure I can attribute to this.  However,
ACPI_MAX_IRQS is only 256, and I'm pretty sure ia64 can have
IRQs larger than that.

I think this should go in 2.6.27.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPI: Avoid bogus EC timeout when EC is in Polling mode
Zhao Yakui [Mon, 11 Aug 2008 02:33:31 +0000 (10:33 +0800)]
ACPI: Avoid bogus EC timeout when EC is in Polling mode

When EC is in Polling mode, OS will check the EC status continually by using
the following source code:
       clear_bit(EC_FLAGS_WAIT_GPE, &ec->flags);
       while (time_before(jiffies, delay)) {
               if (acpi_ec_check_status(ec, event))
                    return 0;
               msleep(1);
       }
But msleep is realized by the function of schedule_timeout. At the same time
although one process is already waken up by some events, it won't be scheduled
immediately. So maybe there exists the following phenomena:
     a. The current jiffies is already after the predefined jiffies.
But before timeout happens, OS has no chance to check the EC
status again.
     b. If preemptible schedule is enabled, maybe preempt schedule will happen
before checking loop. When the process is resumed again, maybe
timeout already happens, which means that OS has no chance to check
the EC status.

In such case maybe EC status is already what OS expects when timeout happens.
But OS has no chance to check the EC status and regards it as AE_TIME.

So it will be more appropriate that OS will try to check the EC status again
when timeout happens. If the EC status is what we expect, it won't be regarded
as timeout. Only when the EC status is not what we expect, it will be regarded
as timeout, which means that EC controller can't give a response in time.

http://bugzilla.kernel.org/show_bug.cgi?id=9823
http://bugzilla.kernel.org/show_bug.cgi?id=11141

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPI : Add the EC dmi table to fix the incorrect ECDT table
Zhao Yakui [Tue, 12 Aug 2008 02:40:10 +0000 (10:40 +0800)]
ACPI : Add the EC dmi table to fix the incorrect ECDT table

On some ASUS laptops the ECDT gives the incorrect command/status & Data I/O
register address.

AK: it seems like the command/data addresses are exchanged.

In such case it will cause that EC device can't be
initialized correctly.
To add the EC dmi table is to fix this issue. If the laptop falls into the
EC dmi table, the EC command/data I/O address will be fixed.

AK: Add comments describing this better

http://bugzilla.kernel.org/show_bug.cgi?id=9399

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
tested-by    : Jan Kasprzak  <kas@fi.muni.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPI: Properly clear flags on false-positives and send uevent on sudden unplug
Holger Macht [Wed, 6 Aug 2008 15:56:01 +0000 (17:56 +0200)]
ACPI: Properly clear flags on false-positives and send uevent on sudden unplug

Some devices emit a ACPI_NOTIFY_DEVICE_CHECK while physically unplugging
even if the software undock has already been done and dock_present() check
fails. However, the internal flags need to be cleared (complete_undock()).

Also, even notify userspace if the dock station suddently went away
without proper software undocking.

This happens on a Acer TravelMate 3000

Signed-off-by: Holger Macht <hmacht@suse.de>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoacpi: trivial cleanups
Pavel Machek [Tue, 12 Aug 2008 10:24:34 +0000 (12:24 +0200)]
acpi: trivial cleanups

Trivial cleanups for ACPI. Fix misspelling in printk(), fix mismerge,
add file header.

AK: removed file header

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoacer-wmi: Fix wireless and bluetooth on early AMW0 v2 laptops
Carlos Corbacho [Wed, 6 Aug 2008 18:13:56 +0000 (19:13 +0100)]
acer-wmi: Fix wireless and bluetooth on early AMW0 v2 laptops

In the old acer_acpi, I discovered that on some of the newer AMW0 laptops
that supported the WMID methods, they don't work properly for setting the
wireless and bluetooth values.

So for the AMW0 V2 laptops, we want to use both the 'old' AMW0 and the
'new' WMID methods for setting wireless & bluetooth to guarantee we always
enable it.

This was fixed in acer_acpi some time ago, but I forgot to port the patch
over to acer-wmi when it was merged.

(Without this patch, early AMW0 V2 laptops such as the Aspire 5040 won't
work with acer-wmi, where-as they did with the old acer_acpi).

AK: fix compilation

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
CC: stable@kernel.org
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPI: WMI: Set instance for query block calls
Carlos Corbacho [Sat, 2 Aug 2008 16:28:45 +0000 (17:28 +0100)]
ACPI: WMI: Set instance for query block calls

Although the necessary data structure was set up, it was never actually
passed in, so data block calls have only been working by sheer chance.

(On Acer laptops. the data block methods we've been calling never look at
the instance value, hence acer-wmi never triggered this before).

f3454ae8104efb2dbf0d08ec42c6f5d0fe9225bc brought this to light.

Signed-off-by: Carlos Corbacho <carlos@strangeworlds.co.uk>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPICA: Additional error checking for pathname utilities
Bob Moore [Mon, 4 Aug 2008 03:13:01 +0000 (11:13 +0800)]
ACPICA: Additional error checking for pathname utilities

Add error check after all calls to acpi_ns_get_pathname_length.
Add status return from acpi_ns_build_external_path and check after
all calls.  Add parameter validation to acpi_ut_initialize_buffer.

Reported by and initial patch by Ingo Molnar.
http://lkml.org/lkml/2008/7/21/176

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPICA: Fix possible memory leak in Unload() operator
Lin Ming [Fri, 4 Jul 2008 02:51:41 +0000 (10:51 +0800)]
ACPICA: Fix possible memory leak in Unload() operator

The DdbHandle returned by Load() does not have its reference count
decremented during unload, leading to a memory leak. Lin Ming.

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoACPICA: Fix memory leak when deleting thermal/processor objects
Bob Moore [Fri, 4 Jul 2008 02:41:41 +0000 (10:41 +0800)]
ACPICA: Fix memory leak when deleting thermal/processor objects

Fixes a possible memory leak when thermal and processor objects
are deleted. Any associated notify handlers (and objects) were
not being deleted. Fiodor Suietov. BZ 506

http://www.acpica.org/bugzilla/show_bug.cgi?id=506

Signed-off-by: Fiodor Suietov <fiodor.f.suietov@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Andi Kleen <ak@linux.intel.com>
16 years agoUBIFS: xattr bugfixes
Artem Bityutskiy [Tue, 12 Aug 2008 13:30:12 +0000 (16:30 +0300)]
UBIFS: xattr bugfixes

Xattr code has not been tested for a while and there were
serveral bugs. One of them is using wrong inode in
'ubifs_jnl_change_xattr()'. The other is a deadlock in
'ubifs_setxattr()': the i_mutex is locked in
'cap_inode_need_killpriv()' path, so deadlock happens when
'ubifs_setxattr()' tries to lock it again.

Thanks to Zoltan Sogor for finding these bugs.

Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
16 years agoALSA: virtuoso: add Xonar D1 support
Clemens Ladisch [Mon, 28 Jul 2008 08:28:43 +0000 (10:28 +0200)]
ALSA: virtuoso: add Xonar D1 support

Add support for the Asus Xonar D1.  It is the same as the DX, but
without the external power detection.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
16 years agoBlackfin arch: hook up some missing new system calls
Bryan Wu [Thu, 14 Aug 2008 07:40:19 +0000 (15:40 +0800)]
Blackfin arch: hook up some missing new system calls

Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: fix missing digit in SCLK range checking
Mike Frysinger [Thu, 14 Aug 2008 07:19:25 +0000 (15:19 +0800)]
Blackfin arch: fix missing digit in SCLK range checking

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: do not muck with the UART during boot -- let the serial driver worry...
Mike Frysinger [Thu, 14 Aug 2008 07:15:43 +0000 (15:15 +0800)]
Blackfin arch: do not muck with the UART during boot -- let the serial driver worry about it

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: clear EMAC_SYSTAT during IRQ init rather than early head.S as we dont...
Mike Frysinger [Thu, 14 Aug 2008 07:05:01 +0000 (15:05 +0800)]
Blackfin arch: clear EMAC_SYSTAT during IRQ init rather than early head.S as we dont need it setup that early

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: use %pF when printing out the double fault address so we get symbol...
Mike Frysinger [Thu, 14 Aug 2008 06:57:26 +0000 (14:57 +0800)]
Blackfin arch: use %pF when printing out the double fault address so we get symbol names

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: add support for the BlackStamp board
Benjamin Matthews [Thu, 14 Aug 2008 06:55:54 +0000 (14:55 +0800)]
Blackfin arch: add support for the BlackStamp board

Signed-off-by: Benjamin Matthews <bmat@lle.rochester.edu>
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: Allow ins functions to have a low latency version
Robin Getz [Thu, 14 Aug 2008 07:12:55 +0000 (15:12 +0800)]
Blackfin arch: Allow ins functions to have a low latency version

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: Print out doublefault addresses, so debug can occur
Robin Getz [Thu, 14 Aug 2008 06:44:33 +0000 (14:44 +0800)]
Blackfin arch: Print out doublefault addresses, so debug can occur

Signed-off-by: Robin Getz <rgetz@blackfin.uclinux.org>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: shuffle related prototypes together -- no functional changes
Mike Frysinger [Thu, 14 Aug 2008 06:37:32 +0000 (14:37 +0800)]
Blackfin arch: shuffle related prototypes together -- no functional changes

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: move fixed code defines into fixed_code.h as very few things actually...
Mike Frysinger [Thu, 14 Aug 2008 06:36:15 +0000 (14:36 +0800)]
Blackfin arch: move fixed code defines into fixed_code.h as very few things actually need to know these details

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: mark some functions as __init as they are only called from __init...
Mike Frysinger [Thu, 14 Aug 2008 06:35:20 +0000 (14:35 +0800)]
Blackfin arch: mark some functions as __init as they are only called from __init functions

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: delete dead prototypes
Mike Frysinger [Thu, 14 Aug 2008 06:33:05 +0000 (14:33 +0800)]
Blackfin arch: delete dead prototypes

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years agoBlackfin arch: cleanup cache lock code
Mike Frysinger [Thu, 14 Aug 2008 06:29:57 +0000 (14:29 +0800)]
Blackfin arch: cleanup cache lock code

 - remove cheesy read_iloc() function
 - move invalidate_entire_icache function to lock.S
 - export proper prototypes for functions in lock.S
 - only build lock.S when BFIN_ICACHE_LOCK is enabled

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
16 years ago[CIFS] mount of IPC$ breaks with iget patch
Steve French [Tue, 12 Aug 2008 14:14:40 +0000 (14:14 +0000)]
[CIFS] mount of IPC$ breaks with iget patch

In looking at network named pipe support on cifs, I noticed that
Dave Howell's iget patch:

    iget: stop CIFS from using iget() and read_inode()

broke mounts to IPC$ (the interprocess communication share), and don't
handle the error case (when getting info on the root inode fails).

Thanks to Gunter who noted a typo in a debug line in the original
version of this patch.

CC: David Howells <dhowells@redhat.com>
CC: Gunter Kukkukk <linux@kukkukk.com>
CC: Stable Kernel <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6
Linus Torvalds [Thu, 14 Aug 2008 03:50:10 +0000 (20:50 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (47 commits)
  usb: musb: pass configuration specifics via pdata
  usb: musb: fix hanging when rmmod gadget driver
  USB: Add MUSB and TUSB support
  USB: serial: remove CONFIG_USB_DEBUG from sierra and option drivers
  USB: Add vendor/product id of ZTE MF628 to option
  USB: quirk PLL power down mode
  USB: omap_udc: fix compilation with debug enabled
  usb: cdc-acm: drain writes on close
  usb: cdc-acm: stop dropping tx buffers
  usb: cdc-acm: bugfix release()
  usb gadget: issue notifications from ACM function
  usb gadget: remove needless struct members
  USB: sh: r8a66597-hcd: fix disconnect regression
  USB: isp1301: fix compilation
  USB: fix compiler warning fix
  usb-storage: unusual_devs entry for Nokia 5300
  USB: cdc-acm.c: Fix compile warnings
  USB: BandRich BandLuxe C150/C250 HSPA Data Card Driver
  USB: ftdi_sio: add support for PHI Fisco data cable (FT232BM based, VID/PID 0403:e40b)
  usb: isp1760: don't be noisy about short packets.
  ...

16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Thu, 14 Aug 2008 03:49:37 +0000 (20:49 -0700)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
  CRED: Introduce credential access wrappers

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Thu, 14 Aug 2008 03:48:46 +0000 (20:48 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (56 commits)
  netns: Fix crash by making igmp per namespace
  bnx2x: Version update
  bnx2x: Checkpatch compliance
  bnx2x: Spelling mistakes
  bnx2x: Minor code improvements
  bnx2x: Driver info
  bnx2x: 1G LED does not turn off
  bnx2x: 8073 PHY changes
  bnx2x: Change GPIO for any port
  bnx2x: Pause settings
  bnx2x: Link order with external PHY
  bnx2x: No LRO without Rx checksum
  bnx2x: Wrong structure size
  bnx2x: WoL capability
  bnx2x: Clearing MAC addresses filters
  bnx2x: Delay in while loops
  bnx2x: PBA Table Page Alignment Workaround
  bnx2x: Self-test false positive
  bnx2x: Memory allocation
  bnx2x: HW attention lock
  ...

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Thu, 14 Aug 2008 03:48:25 +0000 (20:48 -0700)]
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  sparc64: Handle stack trace attempts before irqstacks are setup.
  sparc64: Implement IRQ stacks.
  sparc: remove include of linux/of_device.h from asm/of_device.h
  sparc64: Fix recursion in stack overflow detection handling.
  sparc/drivers: use linux/of_device.h instead of asm/of_device.h
  sparc64: Don't MAGIC_SYSRQ ifdef smp_fetch_global_regs and support code.

16 years agousb: musb: pass configuration specifics via pdata
Felipe Balbi [Fri, 8 Aug 2008 09:40:54 +0000 (12:40 +0300)]
usb: musb: pass configuration specifics via pdata

Use platform_data to pass musb configuration-specific
details to musb driver.

This patch will prevent that other platforms selecting
HAVE_CLK and enabling musb won't break tree building.

The other parts of it will come when linux-omap merge
up more omap2/3 board-files.

Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Acked-by: Paul Mundt <lethal@linux-sh.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agousb: musb: fix hanging when rmmod gadget driver
Felipe Balbi [Mon, 4 Aug 2008 10:53:52 +0000 (13:53 +0300)]
usb: musb: fix hanging when rmmod gadget driver

If we try to modprobe a second gadget driver before
rmmoding the first one, the reference for the first
gadget driver would get NULLed avoiding usb to change
gadget drivers later.

Cc: David Brownell <david-b@pacbell.net>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agoUSB: Add MUSB and TUSB support
Felipe Balbi [Thu, 24 Jul 2008 09:27:36 +0000 (12:27 +0300)]
USB: Add MUSB and TUSB support

This patch adds support for MUSB and TUSB controllers
integrated into omap2430 and davinci. It also adds support
for external tusb6010 controller.

Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agoUSB: serial: remove CONFIG_USB_DEBUG from sierra and option drivers
Greg Kroah-Hartman [Tue, 12 Aug 2008 05:04:50 +0000 (12:04 +0700)]
USB: serial: remove CONFIG_USB_DEBUG from sierra and option drivers

These drivers should not be relying on CONFIG_USB_DEBUG.  By doing this,
it prevents users of kernels that do not enable this option from
enabling debugging in these drivers, unlike all other usb-serial
drivers.

Cc: Matthias Urlichs <smurf@smurf.noris.de>
Cc: Kevin Lloyd <klloyd@sierrawireless.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agoUSB: Add vendor/product id of ZTE MF628 to option
Oliver Martin [Sat, 9 Aug 2008 02:49:26 +0000 (04:49 +0200)]
USB: Add vendor/product id of ZTE MF628 to option

This adds the vendor and product id (19d2:0015) of the ZTE MF628 HSDPA
modem to the option driver. It still needs a mode switch command issued
beforehand, this is currently handled by a userspace tool.

Signed-off-by: Oliver Martin <oliver.martin@student.tuwien.ac.at>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agoUSB: quirk PLL power down mode
Libin Yang [Fri, 8 Aug 2008 07:03:31 +0000 (15:03 +0800)]
USB: quirk PLL power down mode

On some AMD 700 series southbridges, ISO OUT transfers (such as audio
playback through speakers) on the USB OHCI controller may be corrupted
when an A-Link express power saving feature is active.

PLL power down mode in conjunction with link power management feature
L1 being enabled is the bad combination ... this patch prevents them
from being enabled when ISO transfers are pending.

Signed-off-by: Crane Cai <crane.cai@amd.com>
Signed-off-by: Libin Yang <libin.yang@amd.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agoUSB: omap_udc: fix compilation with debug enabled
Dmitry Baryshkov [Thu, 7 Aug 2008 12:29:25 +0000 (16:29 +0400)]
USB: omap_udc: fix compilation with debug enabled

Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agousb: cdc-acm: drain writes on close
David Brownell [Thu, 7 Aug 2008 01:46:10 +0000 (18:46 -0700)]
usb: cdc-acm: drain writes on close

Add a mechanism to let the write queue drain naturally before
closing the TTY, rather than always losing that data.  There
is a timeout, so it can't wait too long.

Provide missing locking inside acm_wb_is_avail(); it matters
more now.  Note, this presumes an earlier patch was applied,
removing a call to this routine where the lock was held.

Slightly improved diagnostics on write URB completion, so we
can tell when a write URB gets killed and, if so, how much
data it wrote first ... and so that I/O path is normally
silent (and can't much change timings).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agousb: cdc-acm: stop dropping tx buffers
David Brownell [Thu, 7 Aug 2008 01:44:12 +0000 (18:44 -0700)]
usb: cdc-acm: stop dropping tx buffers

The "increase cdc-acm write throughput" patch left in place two
now-obsolete mechanisms, either of which can make the cdc-acm
driver drop TX data (nasty!).  This patch removes them:

  - The write_ready flag ... if an URB and buffer were found,
    they can (and should!) always be used.

  - TX path acm_wb_is_used() ... used when the buffer was just
    allocated, so that check is pointless.

Also fix a won't-yet-matter leak of a write buffer on a disconnect path.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: David Engraf <david.engraf@netcom.eu>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agousb: cdc-acm: bugfix release()
David Brownell [Thu, 7 Aug 2008 01:41:12 +0000 (18:41 -0700)]
usb: cdc-acm: bugfix release()

Bugfixes to the usb_driver_release_interface() usage;

  (a) make sure releasing *either* interface first will release
      the other, instead of insisting it be the control interface;

  (b) remove the recently-added self-deadlock.

(The "fix disconnect bug in cdc-acm" patch was incomplete and incorrect.)

Plus a small "sparse" fix:  rename a local variable so it doesn't
shadow a function parameter.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agousb gadget: issue notifications from ACM function
David Brownell [Thu, 7 Aug 2008 01:49:57 +0000 (18:49 -0700)]
usb gadget: issue notifications from ACM function

Update the CDC-ACM gadget code to support the peripheral-to-host
notifications when the tty is opened or closed, or issues a BREAK.
The serial framework code calls new generic hooks; right now only
CDC-ACM uses those hooks.  This resolves several REVISIT comments
in the code.  (Based on a patch from Felipe Balbi.)

Note that this doesn't expose USB_CDC_CAP_BRK to the host, since
this code still rejects USB_CDC_REQ_SEND_BREAK control requests
for host-to-peripheral BREAK signaling (received via /dev/ttyGS*).

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Felipe Balbi <felipe.balbi@nokia.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
16 years agousb gadget: remove needless struct members
David Brownell [Thu, 7 Aug 2008 01:48:52 +0000 (18:48 -0700)]
usb gadget: remove needless struct members

This removes some unused members from the various USB functions.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>