Commit Graph

119336 Commits

Author SHA1 Message Date
Linus Torvalds
b6584065ee Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  swiotlb: use coherent_dma_mask in alloc_coherent
  MAINTAINERS: remove me as RAID maintainer
2008-11-18 08:06:00 -08:00
Linus Torvalds
376fdd2a5d 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:
  Blackfin arch: fix a broken define in dma-mapping
  Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash
  Blackfin arch: fix bug - shared lib function in L2 failed be called
  Blackfin arch: fix incorrect limit check for bf54x check_gpio
  Blackfin arch: fix bug - Cpufreq assumes clocks in kHz and not Hz.
  Blackfin arch: dont warn when running a kernel on the oldest supported silicon
  Blackfin arch: fix bug - kernel build with write back policy fails to be booted up
  Blackfin arch: fix bug - dmacopy test case fail on all platform
  Blackfin arch: Fix typo when adding CONFIG_DEBUG_VERBOSE
  Blackfin arch: don't copy bss when copying L1
  Blackfin arch: fix bug - Fail to boot jffs2 kernel for BF561 with SMP patch
  Blackfin arch: handle case of d_path() returning error in decode_address()
2008-11-18 08:05:43 -08:00
Linus Torvalds
af94ce063c 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: hda - Fix resume of GPIO unsol event for STAC/IDT
  ALSA: hda - Add quirks for HP Pavilion DV models
  ALSA: hda - Fix GPIO initialization in patch_stac92hd71bxx()
  ALSA: hda - Check model type instead of SSID in patch_92hd71bxx()
  ALSA: sound/pci/pcxhr/pcxhr.c: introduce missing kfree and pci_disable_device
  ALSA: hda: STAC_VREF_EVENT value change
  ALSA: hda - Missing NULL check in hda_beep.c
  ALSA: hda - Add digital beep playback switch for STAC/IDT codecs
2008-11-18 08:05:05 -08:00
Julia Lawall
0bb943c7a2 tracing: kernel/trace/trace.c: introduce missing kfree()
Impact: fix memory leak

Error handling code following a kzalloc should free the allocated data.

The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,l;
position p1,p2;
expression *ptr != NULL;
@@

(
if ((x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...)) == NULL) S
|
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
)
<... when != x
     when != if (...) { <+...x...+> }
x->f = E
...>
(
 return \(0\|<+...x...+>\|ptr\);
|
 return@p2 ...;
)

@script:python@
p1 << r.p1;
p2 << r.p2;
@@

print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 16:59:58 +01:00
Ingo Molnar
73f56c0d35 Merge branch 'iommu-fixes-2.6.28' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent 2008-11-18 16:48:49 +01:00
Philipp Kohlbecher
0af40a4b10 x86: more general identifier for Phoenix BIOS
Impact: widen the reach of the low-memory-protect DMI quirk

Phoenix BIOSes variously identify their vendor as "Phoenix Technologies,
LTD" or "Phoenix Technologies LTD" (without the comma.)

This patch makes the identification string in the bad_bios_dmi_table
more general (following a suggestion by Ingo Molnar), so that both
versions are handled.

Again, the patched file compiles cleanly and the patch has been tested
successfully on my machine.

Signed-off-by: Philipp Kohlbecher <xt28@gmx.de>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 16:11:36 +01:00
Joerg Roedel
8501c45cc3 AMD IOMMU: check for next_bit also in unmapped area
Impact: fix possible use of stale IO/TLB entries

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:44:43 +01:00
Joerg Roedel
695b5676c7 AMD IOMMU: fix fullflush comparison length
Impact: fix comparison length for 'fullflush'

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:44:42 +01:00
Joerg Roedel
3ce1f93c6d AMD IOMMU: enable device isolation per default
Impact: makes device isolation the default for AMD IOMMU

Some device drivers showed double-free bugs of DMA memory while testing
them with AMD IOMMU. If all devices share the same protection domain
this can lead to data corruption and data loss. Prevent this by putting
each device into its own protection domain per default.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:44:31 +01:00
Joerg Roedel
e5e1f606ec AMD IOMMU: add parameter to disable device isolation
Impact: add a new AMD IOMMU kernel command line parameter

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
2008-11-18 15:43:23 +01:00
Ingo Molnar
10db4ef7b9 x86, PEBS/DS: fix code flow in ds_request()
this compiler warning:

  arch/x86/kernel/ds.c: In function 'ds_request':
  arch/x86/kernel/ds.c:368: warning: 'context' may be used uninitialized in this function

Shows that the code flow in ds_request() is buggy - it goes into
the unlock+release-context path even when the context is not allocated
yet.

First allocate the context, then do the other checks.

Also, take care with GFP allocations under the ds_lock spinlock.

Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 15:34:36 +01:00
Jens Axboe
c26156b253 block: hold extra reference to bio in blk_rq_map_user_iov()
If the size passed in is OK but we end up mapping too many segments,
we call the unmap path directly like from IO completion. But from IO
completion we have an extra reference to the bio, so this error case
goes OOPS when it attempts to free and already free bio.

Fix it by getting an extra reference to the bio before calling the
unmap failure case.

Reported-by: Petr Vandrovec <vandrove@vc.cvut.cz>

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Lai Jiangshan
98ba4031ab relay: fix cpu offline problem
relay_open() will close allocated buffers when failed.
but if cpu offlined, some buffer will not be closed.
this patch fixed it.

and did cleanup for relay_reset() too.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Zhaolei
68aee07f9b Release old elevator on change elevator
We should release old elevator when change to use a new one.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Zhang, Yanmin
561ec68e4d block: fix boot failure with CONFIG_DEBUG_BLOCK_EXT_DEVT=y and nash
We run into system boot failure with kernel 2.6.28-rc. We found it on a
couple of machines, including T61 notebook, nehalem machine, and another
HPC NX6325 notebook.  All the machines use FedoraCore 8 or FedoraCore 9.
With kernel prior to 2.6.28-rc, system boot doesn't fail.

I debug it and locate the root cause. Pls. see
http://bugzilla.kernel.org/show_bug.cgi?id=11899
https://bugzilla.redhat.com/show_bug.cgi?id=471517

As a matter of fact, there are 2 bugs.

1)root=/dev/sda1, system boot randomly fails. Mostly, boot for 5 times
and fails once. nash has a bug. Some of its functions misuse return
value 0.  Sometimes, 0 means timeout and no uevent available. Sometimes,
0 means nash gets an uevent, but the uevent isn't block-related (for
exmaple, usb). If by coincidence, kernel tells nash that uevents are
available, but kernel also set timeout, nash might stops collecting
other uevents in queue if current uevent isn't block-related.  I work
out a patch for nash to fix it.
http://bugzilla.kernel.org/attachment.cgi?id=18858

2) root=LABEL=/, system always can't boot. initrd init reports
switchroot fails. Here is an executation branch of nash when booting:
    (1) nash read /sys/block/sda/dev; Assume major is 8 (on my desktop)
    (2) nash query /proc/devices with the major number; It found line
	"8 sd";
    (3) nash use 'sd' to search its own probe table to find device (DISK)
	type for the device and add it to its own list;
    (4) Later on, it probes all devices in its list to get filesystem
	labels; scsi register "8 sd" always.

When major is 259, nash fails to find the device(DISK) type. I enables
CONFIG_DEBUG_BLOCK_EXT_DEVT=y when compiling kernel, so 259 is picked up
for device /dev/sda1, which causes nash to fail to find device (DISK)
type.

To fixing issue 2), I create a patch for nash and another patch for
kernel.

http://bugzilla.kernel.org/attachment.cgi?id=18859
http://bugzilla.kernel.org/attachment.cgi?id=18837

Below is the patch for kernel 2.6.28-rc4. It registers blkext, a new
block device in proc/devices.

With 2 patches on nash and 1 patch on kernel, I boot my machines for
dozens of times without failure.

Signed-off-by Zhang Yanmin <yanmin.zhang@linux.intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Tejun Heo
55e8e30c38 block/md: fix md autodetection
Block ext devt conversion missed md_autodetect_dev() call in
rescan_partitions() leaving md autodetect unable to see partitions.
Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Tejun Heo
ba32929a91 block: make add_partition() return pointer to hd_struct
Make add_partition() return pointer to the new hd_struct on success
and ERR_PTR() value on failure.  This change will be used to fix md
autodetection bug.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Neil Brown <neilb@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:56 +01:00
Tejun Heo
eb60fa1066 block: fix add_partition() error path
Partition stats structure was not freed on devt allocation failure
path.  Fix it.

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-11-18 15:08:55 +01:00
Takashi Iwai
ef71b1b875 Merge branches 'topic/fix/hda' and 'topic/fix/misc' into for-linus 2008-11-18 13:49:39 +01:00
Takashi Iwai
c5d08bb567 ALSA: hda - Fix resume of GPIO unsol event for STAC/IDT
Use cached write for setting the GPIO unsolicited event mask to be
restored properly at resume.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-18 10:55:36 +01:00
Takashi Iwai
80bf272468 ALSA: hda - Add quirks for HP Pavilion DV models
Added the quirk entries for HP Pavilion DV5 and DV7 with model=hp-m4.

Reference: Novell bnc#445321, bnc#445161
	https://bugzilla.novell.com/show_bug.cgi?id=445321
	https://bugzilla.novell.com/show_bug.cgi?id=445161

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-18 10:48:41 +01:00
Mike Frysinger
62273eeb6a Blackfin arch: fix a broken define in dma-mapping
dma_mapping_error is an actual function, so fix broken define with a
real inline stub

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Graf Yang
4213cb6400 Blackfin arch: fix bug - Turn on DEBUG_DOUBLEFAULT, booting SMP kernel crash
Signed-off-by: Graf Yang <graf.yang@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
2008-11-18 17:48:22 +08:00
Takashi Iwai
41c3b648bd ALSA: hda - Fix GPIO initialization in patch_stac92hd71bxx()
Fixed the GPIO mask and co initialization in patch_stac92hd71bxx()
so that the gpio_maks for HP_M4 model is set properly.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2008-11-18 10:45:15 +01:00
Rakib Mullick
e270219f43 kernel/profile.c: fix section mismatch warning
Impact: fix section mismatch warning in kernel/profile.c

Here, profile_nop function has been called from a non-init function
create_hash_tables(void). Which generetes a section mismatch warning.
Previously, create_hash_tables(void) was a init function. So, removing
__init from create_hash_tables(void) requires profile_nop to be
non-init.

This patch makes profile_nop function inline and fixes the
following warning:

 WARNING: vmlinux.o(.text+0x6ebb6): Section mismatch in reference from
 the function create_hash_tables() to the function
 .init.text:profile_nop()
 The function create_hash_tables() references
 the function __init profile_nop().
 This is often because create_hash_tables lacks a __init
 annotation or the annotation of profile_nop is wrong.

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 08:49:24 +01:00
Li Zefan
700018e0a7 cpuset: fix regression when failed to generate sched domains
Impact: properly rebuild sched-domains on kmalloc() failure

When cpuset failed to generate sched domains due to kmalloc()
failure, the scheduler should fallback to the single partition
'fallback_doms' and rebuild sched domains, but now it only
destroys but not rebuilds sched domains.

The regression was introduced by:

| commit dfb512ec48
| Author: Max Krasnyansky <maxk@qualcomm.com>
| Date:   Fri Aug 29 13:11:41 2008 -0700
|
|    sched: arch_reinit_sched_domains() must destroy domains to force rebuild

After the above commit, partition_sched_domains(0, NULL, NULL) will
only destroy sched domains and partition_sched_domains(1, NULL, NULL)
will create the default sched domain.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Cc: Max Krasnyansky <maxk@qualcomm.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 08:44:51 +01:00
Linus Torvalds
4e14e833ac 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:
  prevent cifs_writepages() from skipping unwritten pages
  Fixed parsing of mount options when doing DFS submount
  [CIFS] Fix check for tcon seal setting and fix oops on failed mount from earlier patch
  [CIFS] Fix build break
  cifs: reinstate sharing of tree connections
  [CIFS] minor cleanup to cifs_mount
  cifs: reinstate sharing of SMB sessions sans races
  cifs: disable sharing session and tcon and add new TCP sharing code
  [CIFS] clean up server protocol handling
  [CIFS] remove unused list, add new cifs sock list to prepare for mount/umount fix
  [CIFS] Fix cifs reconnection flags
  [CIFS] Can't rely on iov length and base when kernel_recvmsg returns error
2008-11-17 20:53:31 -08:00
Dave Kleikamp
b066a48c95 prevent cifs_writepages() from skipping unwritten pages
Fixes a data corruption under heavy stress in which pages could be left
dirty after all open instances of a inode have been closed.

In order to write contiguous pages whenever possible, cifs_writepages()
asks pagevec_lookup_tag() for more pages than it may write at one time.
Normally, it then resets index just past the last page written before calling
pagevec_lookup_tag() again.

If cifs_writepages() can't write the first page returned, it wasn't resetting
index, and the next call to pagevec_lookup_tag() resulted in skipping all of
the pages it previously returned, even though cifs_writepages() did nothing
with them.  This can result in data loss when the file descriptor is about
to be closed.

This patch ensures that index gets set back to the next returned page so
that none get skipped.

Signed-off-by: Dave Kleikamp <shaggy@linux.vnet.ibm.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Cc: Shirish S Pargaonkar <shirishp@us.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-18 04:30:07 +00:00
Igor Mammedov
2c55608f28 Fixed parsing of mount options when doing DFS submount
Since these hit the same routines, and are relatively small, it is easier to review
them as one patch.

Fixed incorrect handling of the last option in some cases
Fixed prefixpath handling convert path_consumed into host depended string length (in bytes)
Use non default separator if it is provided in the original mount options

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Igor Mammedov <niallain@gmail.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-18 04:29:06 +00:00
Venki Pallipadi
93ce99e849 x86: add rdtsc barrier to TSC sync check
Impact: fix incorrectly marked unstable TSC clock

Patch (commit 0d12cdd "sched: improve sched_clock() performance") has
a regression on one of the test systems here.

With the patch, I see:

 checking TSC synchronization [CPU#0 -> CPU#1]:
 Measured 28 cycles TSC warp between CPUs, turning off TSC clock.
 Marking TSC unstable due to check_tsc_sync_source failed

Whereas, without the patch syncs pass fine on all CPUs:

 checking TSC synchronization [CPU#0 -> CPU#1]: passed.

Due to this, TSC is marked unstable, when it is not actually unstable.
This is because syncs in check_tsc_wrap() goes away due to this commit.

As per the discussion on this thread, correct way to fix this is to add
explicit syncs as below?

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-18 00:15:02 +01:00
Kumar Gala
65ecc14a30 Remove -mno-spe flags as they dont belong
For some unknown reason at Steven Rostedt added in disabling of the SPE
instruction generation for e500 based PPC cores in commit
6ec562328f.

We are removing it because:

1. It generates e500 kernels that don't work
2. its not the correct set of flags to do this
3. we handle this in the arch/powerpc/Makefile already
4. its unknown in talking to Steven why he did this

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
Tested-and-Acked-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-17 13:24:35 -08:00
Linus Torvalds
e77a20e8ef Merge branch 'for-linus' of git://git.o-hand.com/linux-mfd
* 'for-linus' of git://git.o-hand.com/linux-mfd:
  mfd: Correct WM8350 I2C return code usage
  mfd: fix event masking for da9030
2008-11-17 10:45:39 -08:00
Jeremy Fitzhardinge
26a3e99160 xen: fix scrub_page()
Impact: fix guest kernel crash with CONFIG_XEN_SCRUB_PAGES=y

Jens noticed that scrub_page() has a buggy unmap of the wrong
thing. (virtual address instead of page)

Linus pointed out that the whole scrub_page() code is an unnecessary
reimplementation of clear_highpage() to begin with.

Just use clear_highpage() rather than reimplementing it poorly.

Reported-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-17 19:11:26 +01:00
Steve French
ab3f992983 [CIFS] Fix check for tcon seal setting and fix oops on failed mount from earlier patch
set tcon->ses earlier

If the inital tree connect fails, we'll end up calling cifs_put_smb_ses
with a NULL pointer. Fix it by setting the tcon->ses earlier.

Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-17 16:03:00 +00:00
Linus Torvalds
9753b12767 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:
  rtc: rtc-sun4v fixes, revised
  sparc: Fix tty compile warnings.
  sparc: struct device - replace bus_id with dev_name(), dev_set_name()
2008-11-17 07:54:47 -08:00
Linus Torvalds
847e9170c7 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: (27 commits)
  rtnetlink: propagate error from dev_change_flags in do_setlink()
  isdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply
  Phonet: refuse to send bigger than MTU packets
  e1000e: fix IPMI traffic
  e1000e: fix warn_on reload after phy_id error
  phy: fix phy address bug
  e100: fix dma error in direction for mapping
  igb: use dev_printk instead of printk
  qla3xxx: Cleanup: Fix link print statements.
  igb: Use device_set_wakeup_enable
  e1000: Use device_set_wakeup_enable
  e1000e: Use device_set_wakeup_enable
  via-velocity: enable perfect filtering for multicast packets
  phy: Add support for Marvell 88E1118 PHY
  mlx4_en: Pause parameters per port
  phylib: fix premature freeing of struct mii_bus
  atl1: Do not enumerate options unsupported by chip
  atl1e: fix broken multicast by removing unnecessary crc inversion
  gianfar: Fix DMA unmap invocations
  net/ucc_geth: Fix oops in uec_get_ethtool_stats()
  ...
2008-11-17 07:53:25 -08:00
Oleg Nesterov
ad133ba3dc sched, signals: fix the racy usage of ->signal in account_group_xxx/run_posix_cpu_timers
Impact: fix potential NULL dereference

Contrary to ad474caca3 changelog, other
acct_group_xxx() helpers can be called after exit_notify() by timer tick.
Thanks to Roland for pointing out this. Somehow I missed this simple fact
when I read the original patch, and I am afraid I confused Frank during
the discussion. Sorry.

Fortunately, these helpers work with current, we can check ->exit_state
to ensure that ->signal can't go away under us.

Also, add the comment and compiler barrier to account_group_exec_runtime(),
to make sure we load ->signal only once.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-17 16:49:35 +01:00
Jaya Kumar
28105fda1e [ARM] 5330/1: mach-pxa: Fixup reset for systems using reboot=cold or other strings
This patch makes do_hw_reset the default reboot behavior when nothing
else matches. This restores reboot functionality on gumstix basix
devices where reboot=cold is the default boot argument.

Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
Acked-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2008-11-17 14:05:41 +00:00
Russell King
12a8ab152d Merge branch 'for-rmk' of git://git.kernel.org/pub/scm/linux/kernel/git/ycmiao/pxa-linux-2.6 2008-11-17 10:45:03 +00:00
FUJITA Tomonori
1e74f3000b swiotlb: use coherent_dma_mask in alloc_coherent
Impact: fix DMA buffer allocation coherency bug in certain configs

This patch fixes swiotlb to use dev->coherent_dma_mask in
swiotlb_alloc_coherent().

coherent_dma_mask is a subset of dma_mask (equal to it most of
the time), enumerating the address range that a given device
is able to DMA to/from in a cache-coherent way.

But currently, swiotlb uses dev->dma_mask in alloc_coherent()
implicitly via address_needs_mapping(), but alloc_coherent is really
supposed to use coherent_dma_mask.

This bug could break drivers that uses smaller coherent_dma_mask than
dma_mask (though the current code works for the majority that use the
same mask for coherent_dma_mask and dma_mask).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: tony.luck@intel.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-17 09:12:02 +01:00
Johannes Berg
5f9021cfdc rtnetlink: propagate error from dev_change_flags in do_setlink()
Unlike ifconfig, iproute doesn't report an error when setting
an interface up fails:

(example: put wireless network mac80211 interface into repeater mode
with iwconfig but do not set a peer MAC address, it should fail with
-ENOLINK)

without patch:
# ip link set wlan0 up ; echo $?
0
# 

with patch:
# ip link set wlan0 up ; echo $?
RTNETLINK answers: Link has been severed
2
# 

Propagate the return value from dev_change_flags() to fix this.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Tested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-16 23:20:31 -08:00
Harvey Harrison
584c650b4e isdn: remove extra byteswap in isdn_net_ciscohdlck_slarp_send_reply
commit a144ea4b7a [IPV4]: annotate struct in_ifaddr

Missed this extra byteswap as the isdn inlines hide the htonl inside
put_u32 which causes an extra byteswap on little-endian arches.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-16 23:03:45 -08:00
Steve French
c2b3382cd4 [CIFS] Fix build break
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-17 03:57:13 +00:00
Rémi Denis-Courmont
ebfe92ca65 Phonet: refuse to send bigger than MTU packets
Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-16 19:48:49 -08:00
Jeff Layton
f1987b44f6 cifs: reinstate sharing of tree connections
Use a similar approach to the SMB session sharing. Add a list of tcons
attached to each SMB session. Move the refcount to non-atomic. Protect
all of the above with the cifs_tcp_ses_lock. Add functions to
properly find and put references to the tcons.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
2008-11-17 03:14:12 +00:00
Jeff Kirsher
eb7c3adb1c e1000e: fix IPMI traffic
Some users reported that they have machines with BMCs enabled that cannot
receive IPMI traffic after e1000e is loaded.
http://marc.info/?l=e1000-devel&m=121909039127414&w=2
http://marc.info/?l=e1000-devel&m=121365543823387&w=2

This fixes the issue if they load with the new parameter = 0 by disabling
crc stripping, but leaves the performance feature on for most users.
Based on work done by Hong Zhang.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-16 19:05:16 -08:00
Jeff Kirsher
e82f54ba03 e1000e: fix warn_on reload after phy_id error
If the driver fails to initialize the first time due to the failure in the
phy_id check the kernel triggers a warn_on on the second try to load the
driver because the driver did not free the msi/x resources in the first
load because of the previous failure in phy_id check.

Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-11-16 19:05:02 -08:00
Helge Deller
72eb8c6747 unitialized return value in mm/mlock.c: __mlock_vma_pages_range()
Fix an unitialized return value when compiling on parisc (with CONFIG_UNEVICTABLE_LRU=y):
	mm/mlock.c: In function `__mlock_vma_pages_range':
	mm/mlock.c:165: warning: `ret' might be used uninitialized in this function

Signed-off-by: Helge Deller <deller@gmx.de>
[ It isn't ever really used uninitialized, since no caller should ever
  call this function with an empty range.  But the compiler is correct
  that from a local analysis standpoint that is impossible to see, and
  fixing the warning is appropriate.  ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-16 15:55:36 -08:00
Rusty Russell
e14c8bf863 stop_machine: fix race with return value (fixes Bug #11989)
Bug #11989: Suspend failure on NForce4-based boards due to chanes in
stop_machine

We should not access active.fnret outside the lock; in theory the next
stop_machine could overwrite it.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Tested-by: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-16 15:09:52 -08:00
Al Viro
5c06fe772d Fix broken ownership of /proc/sys/ files
D'oh...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-and-tested-by: Peter Palfrader <peter@palfrader.org>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-11-16 15:09:52 -08:00