GitHub/exynos8895/android_kernel_samsung_universal8895.git
16 years agodrm: fixup some of the ioctl function exit paths
Dave Airlie [Thu, 7 Feb 2008 04:51:32 +0000 (14:51 +1000)]
drm: fixup some of the ioctl function exit paths

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: the drm really should call pci_set_master..
Dave Airlie [Thu, 7 Feb 2008 04:48:32 +0000 (14:48 +1000)]
drm: the drm really should call pci_set_master..

perhaps bonghits could turn on my bus-mastering because the drm
certainly never bothered doing it before.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agoi915: Add chipset id for Intel Integrated Graphics Device
Zhenyu Wang [Thu, 24 Jan 2008 06:46:36 +0000 (16:46 +1000)]
i915: Add chipset id for Intel Integrated Graphics Device

This adds new chipset id in drm.

Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
16 years agodrm: cleanup DRM_DEBUG() parameters
Márton Németh [Thu, 24 Jan 2008 05:58:57 +0000 (15:58 +1000)]
drm: cleanup DRM_DEBUG() parameters

As DRM_DEBUG macro already prints out the __FUNCTION__ string (see
drivers/char/drm/drmP.h), it is not worth doing this again. At some
other places the ending "\n" was added.

airlied:- I cleaned up a few that this patch missed also

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm/i915: add support for E7221 chipset
Carlos Martín [Wed, 23 Jan 2008 06:41:17 +0000 (16:41 +1000)]
drm/i915: add support for E7221 chipset

E7221 chipset is a server version of the i915.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: don't cast a pointer to pointer of list_head
Li Zefan [Sun, 16 Dec 2007 23:47:19 +0000 (09:47 +1000)]
drm: don't cast a pointer to pointer of list_head

The casting is safe only when the list_head member is the first member of
the structure.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agomga_dma: return 'err' not just zero from mga_do_cleanup_dma()
Jesper Juhl [Sun, 16 Dec 2007 23:47:17 +0000 (09:47 +1000)]
mga_dma: return 'err' not just zero from mga_do_cleanup_dma()

While reading some code I stumbled across the use of 'err' in
drivers/char/drm/mga_dma.c::mga_do_cleanup_dma() and I think there's a small
problem.

The variable is only used inside #if __OS_HAS_AGP which is fine, but all that
ever happens is an assignment to the variable - it is never actually used for
anything.  The variable is nicely initialized to zero which is also what the
return statement at the end of function returns (always at the moment).

It looks to me like that function should be returning 'err' instead of always
just returning 0.  Here's a patch to do that.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: add _DRM_DRIVER flag, and re-order unload.
Dave Airlie [Sun, 16 Dec 2007 23:41:56 +0000 (09:41 +1000)]
drm: add _DRM_DRIVER flag, and re-order unload.

Allow drivers to addmaps that won't be removed by lastclose or unload.
The unload needs to be re-ordered to avoid removing the hashs before
the driver has removed the final maps.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: enable udev node creation
Dave Airlie [Wed, 28 Nov 2007 23:48:20 +0000 (09:48 +1000)]
drm: enable udev node creation

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: Make DRM_IOCTL_GET_CLIENT return EINVAL when it can't find client #idx.
Eric Anholt [Thu, 22 Nov 2007 08:46:54 +0000 (18:46 +1000)]
drm: Make DRM_IOCTL_GET_CLIENT return EINVAL when it can't find client #idx.

Fixes the getclient test and dritest -c.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: move drm_mem_init to proper place in startup sequence
Dave Airlie [Thu, 22 Nov 2007 08:43:46 +0000 (18:43 +1000)]
drm: move drm_mem_init to proper place in startup sequence

For TTM this needs to be called later.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: call driver load function after initialising AGP
Dave Airlie [Thu, 22 Nov 2007 08:23:13 +0000 (18:23 +1000)]
drm: call driver load function after initialising AGP

needed to intel chipset flushing

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: Fix ioc32 compat layer
Ian Romanick [Thu, 22 Nov 2007 07:02:08 +0000 (17:02 +1000)]
drm: Fix ioc32 compat layer

Previously any ioctls that weren't explicitly listed in the compat ioctl
table would fail with ENOTTY.  If the incoming ioctl number is outside the
range of the table, assume that it Just Works, and pass it off to drm_ioctl.
This make the fence related ioctls work on 64-bit PowerPC.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: fd.o bug #11895: Only add the AGP base to map offset if the caller didn't.
Eric Anholt [Thu, 22 Nov 2007 06:55:15 +0000 (16:55 +1000)]
drm: fd.o bug #11895: Only add the AGP base to map offset if the caller didn't.

The i830 and newer intel 2D code adds the AGP base to map offsets already,
because it wasn't doing the AGP enable which used to set dev->agp->base.

Credit goes to Zhenyu for finding the issue.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agoi915: add suspend/resume support
Jesse Barnes [Thu, 22 Nov 2007 04:14:14 +0000 (14:14 +1000)]
i915: add suspend/resume support

Add suspend/resume support to the i915 driver.  Moves some of the
initialization into the driver load routine, and fixes up places where we
assumed no dev_private existed in some of the cleanup paths.  This allows
us to suspend/resume properly even if X isn't running.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: update DRM sysfs support
Jesse Barnes [Thu, 22 Nov 2007 04:02:38 +0000 (14:02 +1000)]
drm: update DRM sysfs support

Make DRM devices use real Linux devices instead of class devices, which are
going away.  While we're at it, clean up some of the interfaces to take
struct drm_device * or struct device * and use the global drm_class where
needed instead of passing it around.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: Initialize the AGP structure's base address at init rather than enable.
Eric Anholt [Thu, 22 Nov 2007 06:40:37 +0000 (16:40 +1000)]
drm: Initialize the AGP structure's base address at init rather than enable.

Not all drivers call enable (intel), but they would still like to use this
member in driver code.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: move two function extern into the correct block
Dave Airlie [Mon, 5 Nov 2007 03:07:28 +0000 (13:07 +1000)]
drm: move two function extern into the correct block

16 years agodrm: run cleanfile across drm tree
Dave Airlie [Mon, 5 Nov 2007 02:50:58 +0000 (12:50 +1000)]
drm: run cleanfile across drm tree

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agodrm: some minor cleanups and changes to make memory manager merging easier.
Dave Airlie [Mon, 5 Nov 2007 02:37:41 +0000 (12:37 +1000)]
drm: some minor cleanups and changes to make memory manager merging easier.

Signed-off-by: Dave Airlie <airlied@linux.ie>
16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh...
Linus Torvalds [Thu, 7 Feb 2008 02:06:58 +0000 (18:06 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ericvh/v9fs

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ericvh/v9fs:
  9p: fix p9_printfcall export
  9p: transport API reorganization
  9p: add remove function to trans_virtio
  9p: Convert semaphore to spinlock for p9_idpool
  9p: fix mmap to be read-only
  9p: add support for sticky bit
  9p: Fix soft lockup in virtio transport
  9p: fix bug in attach-per-user
  9p: block-based virtio client
  9p: create transport rpc cut-thru
  9p: fix bug in p9_clone_stat

16 years ago9p: fix p9_printfcall export
Andrew Morton [Thu, 7 Feb 2008 01:25:01 +0000 (19:25 -0600)]
9p: fix p9_printfcall export

ERROR: "p9_printfcall" [net/9p/9pnet_virtio.ko] undefined!

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: transport API reorganization
Eric Van Hensbergen [Thu, 7 Feb 2008 01:25:03 +0000 (19:25 -0600)]
9p: transport API reorganization

This merges the mux.c (including the connection interface) with trans_fd
in preparation for transport API changes.  Ultimately, trans_fd will need
to be rewritten to clean it up and simplify the implementation, but this
reorganization is viewed as the first step.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: add remove function to trans_virtio
Eric Van Hensbergen [Thu, 7 Feb 2008 01:25:04 +0000 (19:25 -0600)]
9p: add remove function to trans_virtio

Request from rusty:
Just cleaning up patches for 2.6.25 merge, and noticed that
net/9p/trans_virtio.c doesn't have a remove function.  This will crash when
removing the module (console doesn't have one because it can't really be
removed).

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: Convert semaphore to spinlock for p9_idpool
Anthony Liguori [Thu, 7 Feb 2008 01:25:04 +0000 (19:25 -0600)]
9p: Convert semaphore to spinlock for p9_idpool

When booting from v9fs, down_interruptible in p9_idpool_get() triggered a BUG
as it was being called with IRQs disabled.  A spinlock seems like the right
thing to be using since the idr functions go out of their way not to sleep.

This patch eliminates the BUG by converting the semaphore to a spinlock.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: fix mmap to be read-only
Eric Van Hensbergen [Thu, 7 Feb 2008 01:25:05 +0000 (19:25 -0600)]
9p: fix mmap to be read-only

v9fs was allowing writable mmap which could lead to kernel BUG() cases.
This sets the mmap function to generic_file_readonly_mmap which (correctly)
returns an error to applications which open mmap for writing.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: add support for sticky bit
Anthony Liguori [Thu, 7 Feb 2008 01:25:06 +0000 (19:25 -0600)]
9p: add support for sticky bit

GDM gets unhappy if /var/gdm doesn't have the sticky bit set.  This patch adds
support for the sticky bit in much the same way setuid/setgid is supported.

With this patch, I can launch X from a v9fs rootfs (although I quickly run out
of fds in the server once gnome starts up).

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Acked-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: Fix soft lockup in virtio transport
Eric Van Hensbergen [Thu, 7 Feb 2008 01:25:07 +0000 (19:25 -0600)]
9p: Fix soft lockup in virtio transport

This fixes a poorly placed spinlock which could result in a
soft lockup condition.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: fix bug in attach-per-user
Eric Van Hensbergen [Thu, 7 Feb 2008 01:25:08 +0000 (19:25 -0600)]
9p: fix bug in attach-per-user

When a new user attached at a directory other than the root, he would end
up in the parent directory of the cwd.  This was due to a logic error in
the code which attaches the user at the mount point and walks back to the
cwd.  This patch fixes that.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: block-based virtio client
Eric Van Hensbergen [Thu, 7 Feb 2008 01:25:58 +0000 (19:25 -0600)]
9p: block-based virtio client

This replaces the console-based virto client with a block-based
client using a single request queue.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: create transport rpc cut-thru
Eric Van Hensbergen [Thu, 7 Feb 2008 01:25:09 +0000 (19:25 -0600)]
9p: create transport rpc cut-thru

Add a new transport function which allows a cut-thru directly to
the transport instead of processing request through the mux if the
cut-thru exists.

Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years ago9p: fix bug in p9_clone_stat
Martin Stava [Tue, 5 Feb 2008 15:27:09 +0000 (09:27 -0600)]
9p: fix bug in p9_clone_stat

This patch fixes a bug in the copying of 9P
stat information where string references
weren't being updated properly.

Signed-off-by: Martin Sava <martin.stava@gmail.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
16 years agodocbook: dmapool: fix fatal changed filename
Randy Dunlap [Thu, 7 Feb 2008 00:29:55 +0000 (16:29 -0800)]
docbook: dmapool: fix fatal changed filename

Docbook fatal error, file was moved:
docproc: linux-2.6.24-git15/drivers/base/dmapool.c: No such file or directory

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86
Linus Torvalds [Wed, 6 Feb 2008 21:54:09 +0000 (13:54 -0800)]
Merge git://git./linux/kernel/git/x86/linux-2.6-x86

* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
  x86: fix deadlock, make pgd_lock irq-safe
  virtio: fix trivial build bug
  x86: fix mttr trimming
  x86: delay CPA self-test and repeat it
  x86: fix 64-bit sections
  generic: add __FINITDATA
  x86: remove suprious ifdefs from pageattr.c
  x86: mark the .rodata section also NX
  x86: fix iret exception recovery on 64-bit
  cpuidle: dubious one-bit signed bitfield in cpuidle.h
  x86: fix sparse warnings in powernow-k8.c
  x86: fix sparse error in traps_32.c
  x86: trivial sparse/checkpatch in quirks.c
  x86 ptrace: disallow null cs/ss
  MAINTAINERS: RDC R-321x SoC maintainer
  brk randomization: introduce CONFIG_COMPAT_BRK
  brk: check the lower bound properly
  x86: remove X2 workaround
  x86: make spurious fault handler aware of large mappings
  x86: make traps on entry code be debuggable in user space, 64-bit

16 years agox86: fix deadlock, make pgd_lock irq-safe
Ingo Molnar [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
x86: fix deadlock, make pgd_lock irq-safe

lockdep just caught this one:

=================================
[ INFO: inconsistent lock state ]
2.6.24 #38
---------------------------------
inconsistent {in-softirq-W} -> {softirq-on-W} usage.
swapper/1 [HC0[0]:SC0[0]:HE1:SE1] takes:
 (pgd_lock){-+..}, at: [<ffffffff8022a9ea>] mm_init+0x1da/0x250
{in-softirq-W} state was registered at:
  [<ffffffffffffffff>] 0xffffffffffffffff
irq event stamp: 394559
hardirqs last  enabled at (394559): [<ffffffff80267f0a>] get_page_from_freelist+0x30a/0x4c0
hardirqs last disabled at (394558): [<ffffffff80267d25>] get_page_from_freelist+0x125/0x4c0
softirqs last  enabled at (393952): [<ffffffff80232f8e>] __do_softirq+0xce/0xe0
softirqs last disabled at (393945): [<ffffffff8020c57c>] call_softirq+0x1c/0x30

other info that might help us debug this:
no locks held by swapper/1.

stack backtrace:
Pid: 1, comm: swapper Not tainted 2.6.24 #38

Call Trace:
 [<ffffffff8024e1fb>] print_usage_bug+0x18b/0x190
 [<ffffffff8024f55d>] mark_lock+0x53d/0x560
 [<ffffffff8024fffa>] __lock_acquire+0x3ca/0xed0
 [<ffffffff80250ba8>] lock_acquire+0xa8/0xe0
 [<ffffffff8022a9ea>] ? mm_init+0x1da/0x250
 [<ffffffff809bcd10>] _spin_lock+0x30/0x70
 [<ffffffff8022a9ea>] mm_init+0x1da/0x250
 [<ffffffff8022aa99>] mm_alloc+0x39/0x50
 [<ffffffff8028b95a>] bprm_mm_init+0x2a/0x1a0
 [<ffffffff8028d12b>] do_execve+0x7b/0x220
 [<ffffffff80209776>] sys_execve+0x46/0x70
 [<ffffffff8020c214>] kernel_execve+0x64/0xd0
 [<ffffffff8020901e>] ? _stext+0x1e/0x20
 [<ffffffff802090ba>] init_post+0x9a/0xf0
 [<ffffffff809bc5f6>] ? trace_hardirqs_on_thunk+0x35/0x3a
 [<ffffffff8024f75a>] ? trace_hardirqs_on+0xba/0xd0
 [<ffffffff8020c1a8>] ? child_rip+0xa/0x12
 [<ffffffff8020bcbc>] ? restore_args+0x0/0x44
 [<ffffffff8020c19e>] ? child_rip+0x0/0x12

turns out that pgd_lock has been used on 64-bit x86 in an irq-unsafe
way for almost two years, since commit 8c914cb704a11460e.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agovirtio: fix trivial build bug
Ingo Molnar [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
virtio: fix trivial build bug

fix build bug:

  drivers/virtio/virtio_balloon.c: In function 'fill_balloon':
  drivers/virtio/virtio_balloon.c:98: error: implicit declaration of function 'msleep'

Acked-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: fix mttr trimming
Yinghai Lu [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
x86: fix mttr trimming

Pavel Emelyanov reported that his networking card did not work
and bisected it down to:

"
The commit

  093af8d7f0ba3c6be1485973508584ef081e9f93
  x86_32: trim memory by updating e820

broke my e1000 card: on loading driver says that

  e1000: probe of 0000:04:03.0 failed with error -5

and the interface doesn't appear.
"

on a 32-bit kernel, base will overflow when try to do PAGE_SHIFT,
and highest_addr will always less 4G.

So use pfn instead of address to avoid the overflow when more than
4g RAM is installed on a 32-bit kernel.

Many thanks to Pavel Emelyanov for reporting and testing it.

Bisected-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Tested-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: delay CPA self-test and repeat it
Ingo Molnar [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
x86: delay CPA self-test and repeat it

delay the CPA self-test so that any impact (corruption) of
user-space pagetables can be triggered. Repeat the test
every 30 seconds.

this would have prevented the bug fixed by 8cb2a7c1e95e472b5,
at its source.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: fix 64-bit sections
Sam Ravnborg [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
x86: fix 64-bit sections

fix 64-bit section warnings.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agogeneric: add __FINITDATA
Ingo Molnar [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
generic: add __FINITDATA

Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: remove suprious ifdefs from pageattr.c
Arjan van de Ven [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
x86: remove suprious ifdefs from pageattr.c

The .rodata section really should just be read only; the config option
is there to make breaking up the 2Mb page an option (so people whos machines
give more performance for the 2Mb case can opt to do so).
But when the page gets split anyway, this is no longer an issue, so
clean up the code and remove the ifdefs

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: mark the .rodata section also NX
Arjan van de Ven [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
x86: mark the .rodata section also NX

The .rodata section shouldn't just be read-only,
but also non-executable. This is free since we've broken
up the 2MB page already anyway.

also update test_nx to check for this.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: fix iret exception recovery on 64-bit
Roland McGrath [Wed, 6 Feb 2008 21:39:45 +0000 (22:39 +0100)]
x86: fix iret exception recovery on 64-bit

This change broke recovery of exceptions in iret:

   commit 72fe4858544292ad64600765cb78bc02298c6b1c
   Author: Glauber de Oliveira Costa <gcosta@redhat.com>

       x86: replace privileged instructions with paravirt macros

The ENTRY(native_iret) macro adds alignment padding before the iretq
instruction, so "iret_label" no longer points exactly at the instruction.
It was sloppy to leave the old "iret_label" label behind when replacing
its nearby use.  Removing it would have revealed the other use of the
label later in the file, and upon noticing that use, anyone exercising
the minimum of attention to detail expected of anyone touching this
subtle code would realize it needed to change as well.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agocpuidle: dubious one-bit signed bitfield in cpuidle.h
Harvey Harrison [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
cpuidle: dubious one-bit signed bitfield in cpuidle.h

fix these sparse warnings:

  CHECK   arch/x86/kernel/acpi/cstate.c
include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield
  CHECK   arch/x86/kernel/acpi/processor.c
include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield
  CHECK   arch/x86/kernel/cpu/cpufreq/powernow-k7.c
include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield
  CHECK   arch/x86/kernel/cpu/cpufreq/powernow-k8.c
include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield
  CHECK   arch/x86/kernel/cpu/cpufreq/longhaul.c
include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield
  CHECK   arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
include/linux/cpuidle.h:82:17: error: dubious one-bit signed bitfield

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: fix sparse warnings in powernow-k8.c
Harvey Harrison [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
x86: fix sparse warnings in powernow-k8.c

arch/x86/kernel/cpu/cpufreq/powernow-k8.c:830:7: warning: symbol 'hi' shadows an earlier one
arch/x86/kernel/cpu/cpufreq/powernow-k8.c:824:6: originally declared here
arch/x86/kernel/cpu/cpufreq/powernow-k8.c:830:15: warning: symbol 'lo' shadows an earlier one
arch/x86/kernel/cpu/cpufreq/powernow-k8.c:824:14: originally declared here

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: fix sparse error in traps_32.c
Harvey Harrison [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
x86: fix sparse error in traps_32.c

This was being used to ensure the proper alignment of the FXSAVE/FXRSTOR data.
This would create a sparse error in the _correct_ cases, hiding further
warnings.  Use BUILD_BUG_ON instead.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: trivial sparse/checkpatch in quirks.c
Harvey Harrison [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
x86: trivial sparse/checkpatch in quirks.c

arch/x86/kernel/quirks.c:384:3: warning: returning void-valued expression
arch/x86/kernel/quirks.c:387:3: warning: returning void-valued expression
arch/x86/kernel/quirks.c:390:3: warning: returning void-valued expression
arch/x86/kernel/quirks.c:393:3: warning: returning void-valued expression

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86 ptrace: disallow null cs/ss
Roland McGrath [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
x86 ptrace: disallow null cs/ss

In my revamp of the x86 ptrace code for setting register values,
I accidentally omitted a check that was there in the old code.
Allowing %cs to be 0 causes a bad crash in recovery from iret failure.
This patch fixes that regression against 2.6.24, and adds a comment
that should help prevent this subtlety from being overlooked again.

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agoMAINTAINERS: RDC R-321x SoC maintainer
Florian Fainelli [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
MAINTAINERS: RDC R-321x SoC maintainer

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agobrk randomization: introduce CONFIG_COMPAT_BRK
Ingo Molnar [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
brk randomization: introduce CONFIG_COMPAT_BRK

based on similar patch from: Pavel Machek <pavel@ucw.cz>

Introduce CONFIG_COMPAT_BRK. If disabled then the kernel is free
(but not obliged to) randomize the brk area.

Heap randomization breaks ancient binaries, so we keep COMPAT_BRK
enabled by default.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agobrk: check the lower bound properly
Jiri Kosina [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
brk: check the lower bound properly

There is a check in sys_brk(), that tries to make sure that we do not
underflow the area that is dedicated to brk heap.

The check is however wrong, as it assumes that brk area starts immediately
after the end of the code (+bss), which is wrong for example in
environments with randomized brk start. The proper way is to check whether
the address is not below the start_brk address.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: remove X2 workaround
Ingo Molnar [Wed, 6 Feb 2008 21:39:44 +0000 (22:39 +0100)]
x86: remove X2 workaround

With the spurious handler fix, the X2 does not lock up anymore.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: make spurious fault handler aware of large mappings
Thomas Gleixner [Wed, 6 Feb 2008 21:39:43 +0000 (22:39 +0100)]
x86: make spurious fault handler aware of large mappings

In very rare cases, on certain CPUs, we could end up in the spurious
fault handler and ignore a large pud/pmd mapping. The resulting pte
pointer points into the mapped physical space and dereferencing it
will fault recursively.

Make the code aware of large mappings and do the permission check
on the pmd/pud entry, when a large pud/pmd mapping is detected.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: make traps on entry code be debuggable in user space, 64-bit
Roland McGrath [Wed, 6 Feb 2008 21:39:43 +0000 (22:39 +0100)]
x86: make traps on entry code be debuggable in user space, 64-bit

Unify the x86-64 behavior for 32-bit processes that set
bogus %cs/%ss values (the only ones that can fault in iret)
match what the native i386 behavior is. (do not kill the task
via do_exit but generate a SIGSEGV signal)

[ tglx@linutronix.de: build fix ]

Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agoMerge branch 'async-tx-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop...
Linus Torvalds [Wed, 6 Feb 2008 19:16:11 +0000 (11:16 -0800)]
Merge branch 'async-tx-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop into fix

* 'async-tx-for-linus' of git://lost.foo-projects.org/~dwillia2/git/iop:
  async_tx: allow architecture specific async_tx_find_channel implementations
  async_tx: replace 'int_en' with operation preparation flags
  async_tx: kill tx_set_src and tx_set_dest methods
  async_tx: kill ASYNC_TX_ASSUME_COHERENT
  iop-adma: use LIST_HEAD instead of LIST_HEAD_INIT
  async_tx: use LIST_HEAD instead of LIST_HEAD_INIT
  async_tx: fix compile breakage, mark do_async_xor __always_inline

16 years agoscsi: megaraid: trivial drop duplicate mutex.h include
Daniel Walker [Wed, 6 Feb 2008 14:50:37 +0000 (06:50 -0800)]
scsi: megaraid: trivial drop duplicate mutex.h include

Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
Linus Torvalds [Wed, 6 Feb 2008 18:48:34 +0000 (10:48 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/selinux-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/selinux-2.6:
  SELinux: Remove security_get_policycaps()
  security: allow Kconfig to set default mmap_min_addr protection

16 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Wed, 6 Feb 2008 18:47:46 +0000 (10:47 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ata_piix.c:piix_init_one() must be __devinit
  sata_via.c: Remove missleading comment.
  libata-core: unblacklist HITACHI drives
  sata_nv: fix ATAPI issues with memory over 4GB (v7)
  ata: drivers/ata/sata_mv.c needs dmapool.h
  libata: kill now unused n_iter and fix sata_fsl
  ahci: fix CAP.NP and PI handling
  sata_mv: Support SoC controllers
  Rename: linux/pata_platform.h to linux/ata_platform.h

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Wed, 6 Feb 2008 18:47:18 +0000 (10:47 -0800)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (35 commits)
  virtio net: fix oops on interface-up
  Fix PHY Lib support for gianfar and ucc_geth
  forcedeth: preserve registers
  forcedeth: phy status fix
  forcedeth: restart tx/rx
  ipvs: Make wrr "no available servers" error message rate-limited
  [PPPOL2TP]: Label unused warning when CONFIG_PROC_FS is not set.
  [NET_SCHED]: cls_flow: support classification based on VLAN tag
  [VLAN]: Constify skb argument to vlan_get_tag()
  [NET_SCHED]: cls_flow: fix key mask validity check
  [NET_SCHED]: em_meta: fix compile warning
  b43: Fix DMA for 30/32-bit DMA engines
  b43: fix build with CONFIG_SSB_PCIHOST=n
  mac80211: Is not EXPERIMENTAL anymore
  iwl3945-base.c: fix off-by-one errors
  b43legacy: fix DMA slot resource leakage
  b43legacy: drop packets we are not able to encrypt
  b43legacy: fix suspend/resume
  b43legacy: fix PIO crash
  Generic HDLC - use random_ether_addr()
  ...

16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
Linus Torvalds [Wed, 6 Feb 2008 18:46:58 +0000 (10:46 -0800)]
Merge git://git./linux/kernel/git/davem/sparc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  [SPARC64]: Temporarily remove IOMMU merging code.
  [SPARC64]: Update defconfig.
  [SPARC]: Add new timerfd syscall entries.

16 years agofb: fix warning: no return statement in function returning non-void
Anton Vorontsov [Wed, 6 Feb 2008 09:40:23 +0000 (01:40 -0800)]
fb: fix warning: no return statement in function returning non-void

Warning is reproducible with selected FB_CFB_REV_PIXELS_IN_BYTE.

  CC      drivers/video/sysfillrect.o
In file included from drivers/video/sysfillrect.c:18:
drivers/video/fb_draw.h: In function `fb_rev_pixels_in_long':
drivers/video/fb_draw.h:94: warning: no return statement in function returning non-void
  CC      drivers/video/syscopyarea.o
In file included from drivers/video/syscopyarea.c:22:
drivers/video/fb_draw.h: In function `fb_rev_pixels_in_long':
drivers/video/fb_draw.h:94: warning: no return statement in function returning non-void

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agovirtio: add missing #include <linux/delay.h>
Johann Felix Soden [Wed, 6 Feb 2008 09:40:22 +0000 (01:40 -0800)]
virtio: add missing #include <linux/delay.h>

Include linux/delay.h to fix compiler error:

drivers/virtio/virtio_balloon.c: In function 'fill_balloon':
drivers/virtio/virtio_balloon.c:98: error: implicit declaration of function 'msleep'

Signed-off-by: Johann Felix Soden <johfel@users.sourceforge.net>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext3: fix lock inversion in direct IO
Jan Kara [Wed, 6 Feb 2008 09:40:21 +0000 (01:40 -0800)]
ext3: fix lock inversion in direct IO

We cannot start transaction in ext3_direct_IO() and just let it last during
the whole write because dio_get_page() acquires mmap_sem which ranks above
transaction start (e.g.  because we have dependency chain
mmap_sem->PageLock->journal_start, or because we update atime while holding
mmap_sem) and thus deadlocks could happen.  We solve the problem by
starting a transaction separately for each ext3_get_block() call.

We *could* have a problem that we allocate a block and before its data are
written out the machine crashes and thus we expose stale data.  But that
does not happen because for hole-filling generic code falls back to
buffered writes and for file extension, we add inode to orphan list and
thus in case of crash, journal replay will truncate inode back to the
original size.

[akpm@linux-foundation.org: build fix]
Signed-off-by: Jan Kara <jack@suse.cz>
Cc: <linux-ext4@vger.kernel.org>
Cc: Zach Brown <zach.brown@oracle.com>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agojbd.h: hide kernel only code
Olaf Hering [Wed, 6 Feb 2008 09:40:19 +0000 (01:40 -0800)]
jbd.h: hide kernel only code

Move a few kernel-only things into __KERNEL__.

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext3: remove unused code from ext3_find_entry()
Mariusz Kozlowski [Wed, 6 Feb 2008 09:40:18 +0000 (01:40 -0800)]
ext3: remove unused code from ext3_find_entry()

Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext[234]: cleanup ext[234]_bg_num_gdb()
Akinobu Mita [Wed, 6 Feb 2008 09:40:17 +0000 (01:40 -0800)]
ext[234]: cleanup ext[234]_bg_num_gdb()

Use ext[234]_bg_has_super() to remove duplicate code.

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext[234]: remove unused argument for ext[234]_find_goal()
Akinobu Mita [Wed, 6 Feb 2008 09:40:16 +0000 (01:40 -0800)]
ext[234]: remove unused argument for ext[234]_find_goal()

The argument chain for ext[234]_find_goal() is not used.  This patch removes
it and fixes comment as well.

Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext[234]: use ext[234]_get_group_desc()
Akinobu Mita [Wed, 6 Feb 2008 09:40:16 +0000 (01:40 -0800)]
ext[234]: use ext[234]_get_group_desc()

Use ext[234]_get_group_desc() to get group descriptor from group number.

Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext[234]: fix comment for nonexistent variable
Akinobu Mita [Wed, 6 Feb 2008 09:40:15 +0000 (01:40 -0800)]
ext[234]: fix comment for nonexistent variable

The comment in ext[234]_new_blocks() describes about "i".  But there is no
local variable called "i" in that scope.  I guess it has been renamed to
group_no.

Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext3: change the default behaviour on error
Aneesh Kumar K.V [Wed, 6 Feb 2008 09:40:14 +0000 (01:40 -0800)]
ext3: change the default behaviour on error

ext3 file system was by default ignoring errors and continuing.  This is
not a good default as continuing on error could lead to file system
corruption.  Change the default to mark the file system readonly.  Debian
and ubuntu already does this as the default in their fstab.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Cc: Eric Sandeen <sandeen@redhat.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext3: return after ext3_error in case of failures
Aneesh Kumar K.V [Wed, 6 Feb 2008 09:40:13 +0000 (01:40 -0800)]
ext3: return after ext3_error in case of failures

This fixes some instances where we were continuing after calling
ext3_error.  ext3_error calls panic only if errors=panic mount option is
set.  So we need to make sure we return correctly after ext3_error call

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomake jbd/journal.c:__journal_abort_hard() static
Adrian Bunk [Wed, 6 Feb 2008 09:40:12 +0000 (01:40 -0800)]
make jbd/journal.c:__journal_abort_hard() static

__journal_abort_hard() can now become static.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoBKL-removal: remove incorrect comment refering to lock_kernel() from jbd/jbd2
Andi Kleen [Wed, 6 Feb 2008 09:40:11 +0000 (01:40 -0800)]
BKL-removal: remove incorrect comment refering to lock_kernel() from jbd/jbd2

None of the callers of this function does actually take the BKL as far as I
can see.  So remove the comment refering to the BKL.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: <linux-ext4@vger.kernel.org>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoBKL-removal: remove incorrect BKL comment in ext2
Andi Kleen [Wed, 6 Feb 2008 09:40:11 +0000 (01:40 -0800)]
BKL-removal: remove incorrect BKL comment in ext2

No BKL used anywhere, so don't mention it.

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoBKL-removal: convert ext2 over to use unlocked_ioctl
Andi Kleen [Wed, 6 Feb 2008 09:40:10 +0000 (01:40 -0800)]
BKL-removal: convert ext2 over to use unlocked_ioctl

I checked ext2_ioctl and could not find anything in there that would need the
BKL.  So convert it over to use unlocked_ioctl

Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext3: add block bitmap validation
Aneesh Kumar K.V [Wed, 6 Feb 2008 09:40:09 +0000 (01:40 -0800)]
ext3: add block bitmap validation

When a new block bitmap is read from disk in read_block_bitmap() there are a
few bits that should ALWAYS be set.  In particular, the blocks given
corresponding to block bitmap, inode bitmap and inode tables.  Validate the
block bitmap against these blocks.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoext2: add block bitmap validation
Aneesh Kumar K.V [Wed, 6 Feb 2008 09:40:08 +0000 (01:40 -0800)]
ext2: add block bitmap validation

When a new block bitmap is read from disk in read_block_bitmap() there are a
few bits that should ALWAYS be set.  In particular, the blocks given
corresponding to block bitmap, inode bitmap and inode tables.  Validate the
block bitmap against these blocks.

Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoPNP: disable Supermicro H8DCE motherboard resources that overlap SATA BARs
Bjorn Helgaas [Wed, 6 Feb 2008 09:40:08 +0000 (01:40 -0800)]
PNP: disable Supermicro H8DCE motherboard resources that overlap SATA BARs

Some Supermicro BIOSes describe a SATA PCI BAR as a motherboard resource.
The PNP system driver claims motherboard resources, and this prevents the
sata_nv driver from requesting it later.

This patch disables the PNP0C01/PNP0C02 resources so they won't be claimed
by the PNP system driver, so they'll available for sata_nv.

This fixes the bugs below, where sata_nv detects only two out of four SATA
drives.  The signature includes dmesg lines similar to these:

  pnp: 00:09: iomem range 0xdfefc000-0xdfefcfff has been reserved
  pnp: 00:09: iomem range 0xdfefd000-0xdfefd3ff has been reserved
  pnp: 00:09: iomem range 0xdfefe000-0xdfefe3ff has been reserved

  PCI: Unable to reserve mem region #6:1000@dfefd000 for device 0000:80:07.0
  sata_nv: probe of 0000:80:07.0 failed with error -16
  PCI: Unable to reserve mem region #6:1000@dfefe000 for device 0000:80:08.0
  sata_nv: probe of 0000:80:08.0 failed with error -16

References:
    https://bugzilla.redhat.com/show_bug.cgi?id=280641
    https://bugzilla.redhat.com/show_bug.cgi?id=313491
    http://lkml.org/lkml/2008/1/9/449
    http://thread.gmane.org/gmane.linux.acpi.devel/27312

This is post-2.6.24 material.

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoPNP: do not test PNP_DRIVER_RES_DO_NOT_CHANGE on suspend/resume
Rene Herman [Wed, 6 Feb 2008 09:40:05 +0000 (01:40 -0800)]
PNP: do not test PNP_DRIVER_RES_DO_NOT_CHANGE on suspend/resume

The PNP_DRIVER_RES_DO_NOT_CHANGE flag is meant to signify that the PNP core
should not change resources for the device -- not that it shouldn't
disable/enable the device on suspend/resume.

ALSA ISAPnP drivers set PNP_DRIVER_RES_DO_NOT_CHANAGE (0x0001) through
setting PNP_DRIVER_RES_DISABLE (0x0003).  The latter including the former
may in itself be considered rather unexpected but doesn't change that
suspend/resume wouldn't seem to have any business testing the flag.

As reported by Ondrej Zary for snd-cs4236, ALSA driven ISAPnP cards don't
survive swsusp hibernation with the resume skipping setting the resources
due to testing the flag -- the same test in the suspend path isn't enough
to keep hibernation from disabling the card it seems.

These tests were added (in 2005) by Piere Ossman in commit
68094e3251a664ee1389fcf179497237cbf78331, "alsa: Improved PnP suspend
support" who doesn't remember why.  This deletes them.

Signed-off-by: Rene Herman <rene.herman@gmail.com>
Tested-by: Ondrej Zary <linux@rainbow-software.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Pierre Ossman <drzeus@drzeus.cx>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoisapnp driver semaphore to mutex
Daniel Walker [Wed, 6 Feb 2008 09:40:04 +0000 (01:40 -0800)]
isapnp driver semaphore to mutex

Changed the isapnp semaphore to a mutex.

[akpm@linux-foundation.org: no externs-in-c]
[akpm@linux-foundation.org: build fix]
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.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 agopnp: declare PNP option parsing functions as __init
Thomas Renninger [Wed, 6 Feb 2008 09:40:03 +0000 (01:40 -0800)]
pnp: declare PNP option parsing functions as __init

There are three kind of parse functions provided by PNP acpi/bios:
 - get current resources
 - set resources
 - get possible resources
The first two may be needed later at runtime.
The possible resource settings should never change dynamically.
And even if this would make any sense (I doubt it), the current implementation
only parses possible resource settings at early init time:
  -> declare all the option parsing __init

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Thomas Renninger <trenn@suse.de>
Acked-By: Rene Herman <rene.herman@gmail.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agosimplify pnp_activate_dev() and pnp_disable_dev() return values
Bjorn Helgaas [Wed, 6 Feb 2008 09:40:02 +0000 (01:40 -0800)]
simplify pnp_activate_dev() and pnp_disable_dev() return values

Make pnp_activate_dev() and pnp_disable_dev() return only 0 (success) or a
negative error value, as pci_enable_device() and pci_disable_device() do.

Previously they returned:

    0: device was already active (or disabled)
    1: we just activated (or disabled) device
    <0: -EBUSY or error from pnp_start_dev() (or pnp_stop_dev())

Now we return only 0 (device is active or disabled) or <0 (error).

All in-tree callers either ignore the return values or check only for
errors (negative values).

Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Adam Belay <ambx1@neo.rr.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: fix an occasional deadlock in raid5
NeilBrown [Wed, 6 Feb 2008 09:40:00 +0000 (01:40 -0800)]
md: fix an occasional deadlock in raid5

raid5's 'make_request' function calls generic_make_request on underlying
devices and if we run out of stripe heads, it could end up waiting for one of
those requests to complete.  This is bad as recursive calls to
generic_make_request go on a queue and are not even attempted until
make_request completes.

So: don't make any generic_make_request calls in raid5 make_request until all
waiting has been done.  We do this by simply setting STRIPE_HANDLE instead of
calling handle_stripe().

If we need more stripe_heads, raid5d will get called to process the pending
stripe_heads which will call generic_make_request from a

This change by itself causes a performance hit.  So add a change so that
raid5_activate_delayed is only called at unplug time, never in raid5.  This
seems to bring back the performance numbers.  Calling it in raid5d was
sometimes too soon...

Neil said:

  How about we queue it for 2.6.25-rc1 and then about when -rc2 comes out,
  we queue it for 2.6.24.y?

Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Tested-by: dean gaudet <dean@arctic.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: change ITERATE_RDEV_GENERIC to rdev_for_each_list, and remove ITERATE_RDEV_PENDING.
NeilBrown [Wed, 6 Feb 2008 09:39:59 +0000 (01:39 -0800)]
md: change ITERATE_RDEV_GENERIC to rdev_for_each_list, and remove ITERATE_RDEV_PENDING.

Finish ITERATE_ to for_each conversion.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: change ITERATE_RDEV to rdev_for_each
NeilBrown [Wed, 6 Feb 2008 09:39:59 +0000 (01:39 -0800)]
md: change ITERATE_RDEV to rdev_for_each

As this is more in line with common practice in the kernel.  Also swap the
args around to be more like list_for_each.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: change INTERATE_MDDEV to for_each_mddev
NeilBrown [Wed, 6 Feb 2008 09:39:58 +0000 (01:39 -0800)]
md: change INTERATE_MDDEV to for_each_mddev

As this is more consistent with kernel style.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: change a few 'int' to 'size_t' in md
NeilBrown [Wed, 6 Feb 2008 09:39:57 +0000 (01:39 -0800)]
md: change a few 'int' to 'size_t' in md

As suggested by Andrew Morton.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: fix use-after-free bug when dropping an rdev from an md array
NeilBrown [Wed, 6 Feb 2008 09:39:56 +0000 (01:39 -0800)]
md: fix use-after-free bug when dropping an rdev from an md array

Due to possible deadlock issues we need to use a schedule work to kobject_del
an 'rdev' object from a different thread.

A recent change means that kobject_add no longer gets a refernce, and
kobject_del doesn't put a reference.  Consequently, we need to explicitly hold
a reference to ensure that the last reference isn't dropped before the
scheduled work get a chance to call kobject_del.

Also, rename delayed_delete to md_delayed_delete to that it is more obvious in
a stack trace which code is to blame.

Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: allow an md array to appear with 0 drives if it has external metadata
NeilBrown [Wed, 6 Feb 2008 09:39:55 +0000 (01:39 -0800)]
md: allow an md array to appear with 0 drives if it has external metadata

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: lock address when changing attributes of component devices
NeilBrown [Wed, 6 Feb 2008 09:39:55 +0000 (01:39 -0800)]
md: lock address when changing attributes of component devices

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: allow devices to be shared between md arrays
NeilBrown [Wed, 6 Feb 2008 09:39:54 +0000 (01:39 -0800)]
md: allow devices to be shared between md arrays

Currently, a given device is "claimed" by a particular array so that it cannot
be used by other arrays.

This is not ideal for DDF and other metadata schemes which have their own
partitioning concept.

So for externally managed metadata, just claim the device for md in general,
require that "offset" and "size" are set properly for each device, and make
sure that if a device is included in different arrays then the active sections
do not overlap.

This involves adding another flag to the rdev which makes it awkward to set
"->flags = 0" to clear certain flags.  So now clear flags explicitly by name
when we want to clear things.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: set and test the ->persistent flag for md devices more consistently
NeilBrown [Wed, 6 Feb 2008 09:39:53 +0000 (01:39 -0800)]
md: set and test the ->persistent flag for md devices more consistently

If you try to start an array for which the number of raid disks is listed as
zero, md will currently try to read metadata off any devices that have been
given.  This was done because the value of raid_disks is used to signal
whether array details have been provided by userspace (raid_disks > 0) or must
be read from the devices (raid_disks == 0).

However for an array without persistent metadata (or with externally managed
metadata) this is the wrong thing to do.  So we add a test in do_md_run to
give an error if raid_disks is zero for non-persistent arrays.

This requires that mddev->persistent is set corrently at this point, which it
currently isn't for in-kernel autodetected arrays.

So set ->persistent for autodetect arrays, and remove the settign in
super_*_validate which is now redundant.

Also clear ->persistent when stopping an array so it is consistently zero when
starting an array.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: allow a maximum extent to be set for resyncing
NeilBrown [Wed, 6 Feb 2008 09:39:52 +0000 (01:39 -0800)]
md: allow a maximum extent to be set for resyncing

This allows userspace to control resync/reshape progress and synchronise it
with other activities, such as shared access in a SAN, or backing up critical
sections during a tricky reshape.

Writing a number of sectors (which must be a multiple of the chunk size if
such is meaningful) causes a resync to pause when it gets to that point.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: give userspace control over removing failed devices when external metdata in use
NeilBrown [Wed, 6 Feb 2008 09:39:51 +0000 (01:39 -0800)]
md: give userspace control over removing failed devices when external metdata in use

When a device fails, we must not allow an further writes to the array until
the device failure has been recorded in array metadata.  When metadata is
managed externally, this requires some synchronisation...

Allow/require userspace to explicitly remove failed devices from active
service in the array by writing 'none' to the 'slot' attribute.  If this
reduces the number of failed devices to 0, the write block will automatically
be lowered.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: support 'external' metadata for md arrays
NeilBrown [Wed, 6 Feb 2008 09:39:51 +0000 (01:39 -0800)]
md: support 'external' metadata for md arrays

- Add a state flag 'external' to indicate that the metadata is managed
  externally (by user-space) so important changes need to be
  left of user-space to handle.
  Alternates are non-persistant ('none') where there is no stable metadata -
  after the  array is stopped there is no record of it's status - and
  internal which can be version 0.90 or version 1.x
  These are selected by writing to the 'metadata' attribute.

- move the updating of superblocks (sync_sbs) to after we have checked if
  there are any superblocks or not.

- New array state 'write_pending'.  This means that the metadata records
  the array as 'clean', but a write has been requested, so the metadata has
  to be updated to record a 'dirty' array before the write can continue.
  This change is reported to md by writing 'active' to the array_state
  attribute.

- tidy up marking of sb_dirty:
   - don't set sb_dirty when resync finishes as md_check_recovery
     calls md_update_sb when the sync thread finishes anyway.
   - Don't set sb_dirty in multipath_run as the array might not be dirty.
   - don't mark superblock dirty when switching to 'clean' if there
     is no internal superblock (if external, userspace can choose to
     update the superblock whenever it chooses to).

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: Update md bitmap during resync.
NeilBrown [Wed, 6 Feb 2008 09:39:50 +0000 (01:39 -0800)]
md: Update md bitmap during resync.

Currently an md array with a write-intent bitmap does not updated that bitmap
to reflect successful partial resync.  Rather the entire bitmap is updated
when the resync completes.

This is because there is no guarentee that resync requests will complete in
order, and tracking each request individually is unnecessarily burdensome.

However there is value in regularly updating the bitmap, so add code to
periodically pause while all pending sync requests complete, then update the
bitmap.  Doing this only every few seconds (the same as the bitmap update
time) does not notciably affect resync performance.

[snitzer@gmail.com: export bitmap_cond_end_sync]
Signed-off-by: Neil Brown <neilb@suse.de>
Cc: "Mike Snitzer" <snitzer@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: raid6: clean up the style of raid6test/test.c
H. Peter Anvin [Wed, 6 Feb 2008 09:39:48 +0000 (01:39 -0800)]
md: raid6: clean up the style of raid6test/test.c

Clean up the coding style in raid6test/test.c.  Break it apart into
subfunctions to make the code more readable.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agomd: raid6: Fix mktable.c
H. Peter Anvin [Wed, 6 Feb 2008 09:39:48 +0000 (01:39 -0800)]
md: raid6: Fix mktable.c

Make both mktables.c and its output CodingStyle compliant.  Update the
copyright notice.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agocoding style cleanups for drivers/md/mktables.c
Oliver Pinter [Wed, 6 Feb 2008 09:39:47 +0000 (01:39 -0800)]
coding style cleanups for drivers/md/mktables.c

Signed-off-by: Oliver Pinter <oliver.pntr@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agofbcon: fix color generation for monochrome framebuffer
Thomas Pfaff [Wed, 6 Feb 2008 09:39:45 +0000 (01:39 -0800)]
fbcon: fix color generation for monochrome framebuffer

The current attr_fgcol_ec / attr_bgcol_ec macros do a simple shift of bits
to get the color from vc_video_erase_char.  For a monochrome display
however the attribute does not contain any color, only attribute bits.
Furthermore the reverse bit is lost because it is shifted out, the
resulting color is always 0.

This can bee seen on a monochrome console either directly or by setting it
to inverse mode via "setterm -inversescreen on" .  Text is written with
correct color, fb_fillrects from a bit_clear / bit_clear_margins will get
wrong colors.

Signed-off-by: Thomas Pfaff <tpfaff@pcs.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>