GitHub/LineageOS/android_kernel_samsung_universal7580.git
13 years agoahci: add another PCI ID for marvell
Tejun Heo [Mon, 29 Nov 2010 14:57:14 +0000 (15:57 +0100)]
ahci: add another PCI ID for marvell

1b4b:91a3 seems to be another PCI ID for marvell ahci.  Add it.
Reported and tested in the following thread.

 http://thread.gmane.org/gmane.linux.kernel/1068354

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Borislav Petkov <bp@alien8.de>
Reported-by: Alessandro Tagliapietra <tagliapietra.alessandro@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agolibata: Use 'bool' return value for ata_id_XXX
Hannes Reinecke [Mon, 14 Mar 2011 07:54:20 +0000 (08:54 +0100)]
libata: Use 'bool' return value for ata_id_XXX

Most ata_id_XXX inlines are simple tests, so we should set
the return value to 'bool' here.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agosata_fsl: Update RX_WATER_MARK for TRANSCFG
Prabhakar Kushwaha [Mon, 7 Mar 2011 03:58:10 +0000 (09:28 +0530)]
sata_fsl: Update RX_WATER_MARK for TRANSCFG

RX_WATER_MARK sets the number of locations in Rx FIFO that can be used before
the transport layer instructs the link layer to transmit HOLDS. Note that it
can take some time for the HOLDs to get to the other end, and that in the
interim there must be enough room in the FIFO to absorb all data that could
arrive.

Update the new recommended value to 16.

Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agosata_fsl: Fix wrong Device Error Register usage
Prabhakar Kushwaha [Wed, 9 Mar 2011 07:17:18 +0000 (12:47 +0530)]
sata_fsl: Fix wrong Device Error Register usage

When a single device error is detected, the device under the error
is indicated by the error bit set in the DER. There is a one to one
mapping between register bit and devices on Port multiplier(PMP)
i.e. bit 0 represents PMP device 0 and bit 1 represents PMP device
1 etc.

Current implementation treats Device error register value as device
number not set of bits representing multiple device on PMP. It is
changed to consider bit level.

No need to check for each set bit as all command is going to be
aborted.

Signed-off-by: Ashish Kalra <B00888@freescale.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar@freescale.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agolibata: Include WWN ID in inquiry VPD emulation
Hannes Reinecke [Mon, 7 Mar 2011 07:56:44 +0000 (08:56 +0100)]
libata: Include WWN ID in inquiry VPD emulation

As per SAT-3 the WWN ID should be included in the VPD page 0x83
(device identification) emulation.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agoata/pata_arasan_cf: fill dma chan->private from pdata->dma_priv
Viresh Kumar [Fri, 4 Mar 2011 11:09:29 +0000 (16:39 +0530)]
ata/pata_arasan_cf: fill dma chan->private from pdata->dma_priv

Some DMA controllers (eg: drivers/dma/dw_dmac*) allow platform specific
configuration for dma transfers. User drivers need to set chan->private field
of channel with pointer to configuration data. This patch takes dma_priv data
from platform data and passes it to chan->private_data, in order to pass
platform specific configuration to DMAC controller.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agoata: pata: Convert pr_*(DRV_NAME ...) to pr_fmt/pr_<level>
Joe Perches [Mon, 31 Jan 2011 16:39:24 +0000 (08:39 -0800)]
ata: pata: Convert pr_*(DRV_NAME ...) to pr_fmt/pr_<level>

Commit 40d69ba029c8d5de51aaeb5358999266c482d00a
("pata_hpt{37x|3x2n}: use pr_*(DRV_NAME ...) instead of printk(KERN_* ...)")
used pr_<level>.

Add #define pr_fmt and remove DRV_NAME.
Increment driver version numbers.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agopata_arasan_cf: fix printk format string warning
Jeff Garzik [Mon, 14 Mar 2011 06:54:03 +0000 (02:54 -0400)]
pata_arasan_cf: fix printk format string warning

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agopata_arasan_cf: Adding support for arasan compact flash host controller
Viresh Kumar [Tue, 22 Feb 2011 10:16:07 +0000 (15:46 +0530)]
pata_arasan_cf: Adding support for arasan compact flash host controller

The Arasan CompactFlash Device Controller has three basic modes of
operation: PC card ATA using I/O mode, PC card ATA using memory mode, PC card
ATA using true IDE modes.

Currently driver supports only True IDE mode.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agolibata-sff: add ata_sff_queue_work() & ata_sff_queue_delayed_work()
Viresh Kumar [Tue, 22 Feb 2011 09:02:38 +0000 (14:32 +0530)]
libata-sff: add ata_sff_queue_work() & ata_sff_queue_delayed_work()

This patch adds ata_sff_queue_work() & ata_sff_queue_delayed_work() routine in
libata-sff.c file. This routine can be used by ata drivers to use ata_sff_wq.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agoahci: AHCI mode SATA patch for Intel Patsburg SATA RAID controller
Seth Heasley [Fri, 11 Mar 2011 19:57:42 +0000 (11:57 -0800)]
ahci: AHCI mode SATA patch for Intel Patsburg SATA RAID controller

This patch adds an updated SATA RAID DeviceID for the Intel Patsburg PCH.

Signed-off-by: Seth Heasley <seth.heasley@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agoahci: recognize Marvell 88se9125 PCIe SATA 6.0 Gb/s controller
Per Jessen [Tue, 8 Feb 2011 12:54:32 +0000 (13:54 +0100)]
ahci: recognize Marvell 88se9125 PCIe SATA 6.0 Gb/s controller

Recognize Marvell 88SE9125 PCIe SATA 6.0 Gb/s controller.

Signed-off-by: Per Jessen <per@computer.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: remove ATA_FLAG_LPM
Sergei Shtylyov [Fri, 4 Feb 2011 19:08:22 +0000 (22:08 +0300)]
libata: remove ATA_FLAG_LPM

Commit 6b7ae9545ad9875a289f4191c0216b473e313cb9 (libata: reimplement link power
management) removed the check of ATA_FLAG_LPM but neglected to remove the flag
itself.  Do it now...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: remove ATA_FLAG_NO_LEGACY
Sergei Shtylyov [Fri, 4 Feb 2011 19:05:48 +0000 (22:05 +0300)]
libata: remove ATA_FLAG_NO_LEGACY

All checks of ATA_FLAG_NO_LEGACY have been removed by the commits
c791c30670ea61f19eec390124128bf278e854fe ([libata] minor PCI IDE probe
fixes and cleanups) and f0d36efdc624beb3d9e29b9ab9e9537bf0f25d5b (libata:
update libata core layer to use devres), so I think it's time to finally
get rid of this flag...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: remove ATA_FLAG_MMIO
Sergei Shtylyov [Fri, 4 Feb 2011 19:04:17 +0000 (22:04 +0300)]
libata: remove ATA_FLAG_MMIO

Commit 0d5ff566779f894ca9937231a181eb31e4adff0e (libata: convert to iomap)
removed all checks of ATA_FLAG_MMIO but neglected to remove the flag itself.
Do it now, at last...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: remove ATA_FLAG_{SRST|SATA_RESET}
Sergei Shtylyov [Fri, 4 Feb 2011 19:03:34 +0000 (22:03 +0300)]
libata: remove ATA_FLAG_{SRST|SATA_RESET}

These flags are marked as obsolete and the checks for them have been removed
by commit 294440887b32c58d220fb54b73b7a58079b78f20 (libata-sff: kill unused
ata_bus_reset()), so I think it's time to finally get rid of them...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agoipr/sas_ata: use mode mask macros from <linux/ata.h>
Sergei Shtylyov [Fri, 21 Jan 2011 17:32:01 +0000 (20:32 +0300)]
ipr/sas_ata: use mode mask macros from <linux/ata.h>

Commit 14bdef982caeda19afe34010482867c18217c641 ([libata] convert drivers to
use ata.h mode mask defines) didn't convert these two libata driver outside
drivers/ata/...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agosata_dwc_460ex: add debugging options
Sergei Shtylyov [Fri, 28 Jan 2011 19:02:09 +0000 (22:02 +0300)]
sata_dwc_460ex: add debugging options

The driver makes use of the two options (CONFIG_SATA_DWC_[V]DEBUG) to enable
the debug output but they both are absent in drivers/ata/Kconfig...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agosata_dwc_460ex: fix misuse of ata_get_cmd_descript()
Sergei Shtylyov [Fri, 28 Jan 2011 19:01:01 +0000 (22:01 +0300)]
sata_dwc_460ex: fix misuse of ata_get_cmd_descript()

The driver erroneously uses ata_get_cmd_descript() not only for printing out
the ATA commands but also the protocol and DMA direction enums. Add functions
for properly printing those out...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agosata_dwc_460ex: fix return value of dma_dwc_xfer_setup()
Sergei Shtylyov [Fri, 28 Jan 2011 18:58:54 +0000 (21:58 +0300)]
sata_dwc_460ex: fix return value of dma_dwc_xfer_setup()

The caller expects this function to return the DMA channel number on success,
while it returns 0...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agosata_dwc_460ex: fix compilation errors/warnings
Sergei Shtylyov [Fri, 28 Jan 2011 18:55:55 +0000 (21:55 +0300)]
sata_dwc_460ex: fix compilation errors/warnings

Fix the following compilation errors/warnings:

drivers/ata/sata_dwc_460ex.c:43:1: warning: "DRV_NAME" redefined
In file included from drivers/ata/sata_dwc_460ex.c:38:
drivers/ata/libata.h:31:1: warning: this is the location of the previous
definition
drivers/ata/sata_dwc_460ex.c:44:1: warning: "DRV_VERSION" redefined
drivers/ata/libata.h:32:1: warning: this is the location of the previous
definition
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_exec_command_by_tag':
drivers/ata/sata_dwc_460ex.c:1356: warning: passing argument 1 of
`ata_get_cmd_descript' makes integer from pointer without a cast
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_qc_issue':
drivers/ata/sata_dwc_460ex.c:1476: warning: `err' is used uninitialized in this
function
drivers/ata/sata_dwc_460ex.c:1465: note: `err' was declared here
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_qc_issue':
drivers/ata/sata_dwc_460ex.c:1493: warning: passing argument 1 of
`ata_get_cmd_descript' makes integer from pointer without a cast
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_qc_prep':
drivers/ata/sata_dwc_460ex.c:1537: error: `tag' undeclared (first use in this
function)
drivers/ata/sata_dwc_460ex.c:1537: error: (Each undeclared identifier is
reported only once
drivers/ata/sata_dwc_460ex.c:1537: error: for each function it appears in.)

NB: error only happens if DEBUG_NCQ macro is defined...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agosata_dwc_460ex: use ATA_PIO4
Sergei Shtylyov [Tue, 25 Jan 2011 16:27:35 +0000 (19:27 +0300)]
sata_dwc_460ex: use ATA_PIO4

Somehow the driver was committed with a bare number for the PIO mask, instead
of ATA_PIO4...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years ago[libata] trivial: trim trailing whitespace for drivers/ata/*.[ch]
Jeff Garzik [Tue, 15 Feb 2011 06:13:24 +0000 (01:13 -0500)]
[libata] trivial: trim trailing whitespace for drivers/ata/*.[ch]

13 years agolibsas: convert to libata new error handler
James Bottomley [Sun, 23 Jan 2011 15:44:12 +0000 (09:44 -0600)]
libsas: convert to libata new error handler

The conversion is quite complex given that the libata new error
handler has to be hooked into the current libsas timeout and error
handling.  The way this is done is to process all the failed commands
via libsas first, but if they have no underlying sas task (and they're
on a sata device) assume they are destined for the libata error
handler and send them accordingly.

Finally, activate the port recovery of the libata error handler for
each port known to the host.  This is somewhat suboptimal, since that
port may not need recovering, but given the current architecture of
the libata error handler, it's the only way; and the spurious
activation is harmless.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: separate error handler into usable components
James Bottomley [Sun, 23 Jan 2011 15:42:50 +0000 (09:42 -0600)]
libata: separate error handler into usable components

Right at the moment, the libata error handler is incredibly
monolithic.  This makes it impossible to use from composite drivers
like libsas and ipr which have to handle error themselves in the first
instance.

The essence of the change is to split the monolithic error handler
into two components: one which handles a queue of ata commands for
processing and the other which handles the back end of readying a
port.  This allows the upper error handler fine grained control in
calling libsas functions (and making sure they only get called for ATA
commands whose lower errors have been fixed up).

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: fix eh locking
James Bottomley [Sun, 23 Jan 2011 14:31:14 +0000 (08:31 -0600)]
libata: fix eh locking

The SCSI host eh_cmd_q should be protected by the host lock (not the
port lock).  This probably doesn't matter that much at the moment,
since we try to serialise the add and eh pieces, but it might matter
in future for more convenient error handling.  Plus this switches
libata to the standard eh pattern where you lock, remove from the cmd
queue to a local list and unlock and then operate on the local list.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: fix locking for sas paths
James Bottomley [Sun, 23 Jan 2011 14:30:00 +0000 (08:30 -0600)]
libata: fix locking for sas paths

For historical reasons, libsas uses the scsi host lock as the ata port
lock, and libata always uses the ata host.  For the old eh, this was
largely irrelevant since the two locks were never mixed inside the
code.  However, the new eh has a case where it nests acquisition of
the host lock inside the port lock (this does look rather deadlock
prone).  Obviously this would be an instant deadlock if the port lock
were the host lock, so switch the libsas paths to use the ata host
lock as well.

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: plumb sas port scan into standard libata paths
James Bottomley [Sun, 23 Jan 2011 14:28:33 +0000 (08:28 -0600)]
libata: plumb sas port scan into standard libata paths

The function ata_sas_port_init() has always really done its own thing.
However, as a precursor to moving to the libata new eh, it has to be
properly using the standard libata scan paths.  This means separating
the current libata scan paths into pieces which can be shared with
libsas and pieces which cant (really just the async call and the host
scan).

Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agolibata: fix hotplug for drivers which don't implement LPM
Tejun Heo [Thu, 24 Feb 2011 18:30:37 +0000 (19:30 +0100)]
libata: fix hotplug for drivers which don't implement LPM

ata_eh_analyze_serror() suppresses hotplug notifications if LPM is
being used because LPM generates spurious hotplug events.  It compared
whether link->lpm_policy was different from ATA_LPM_MAX_POWER to
determine whether LPM is enabled; however, this is incorrect as for
drivers which don't implement LPM, lpm_policy is always
ATA_LPM_UNKNOWN.  This disabled hotplug detection for all drivers
which don't implement LPM.

Fix it by comparing whether lpm_policy is greater than
ATA_LPM_MAX_POWER.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groec...
Linus Torvalds [Tue, 1 Mar 2011 02:09:02 +0000 (18:09 -0800)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/groeck/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/staging:
  hwmon: (adt7411) add MODULE_DEVICE_TABLE
  hwmon: (ad7414) add MODULE_DEVICE_TABLE

13 years agofs/block_dev.c: fix new kernel-doc warning
Randy Dunlap [Sat, 26 Feb 2011 18:54:00 +0000 (10:54 -0800)]
fs/block_dev.c: fix new kernel-doc warning

Fix new kernel-doc warning in fs/block_dev.c:

Warning(fs/block_dev.c:937): No description found for parameter 'kill_dirty'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoACPI: Fix build for CONFIG_NET unset
Rafael J. Wysocki [Tue, 1 Mar 2011 00:12:19 +0000 (01:12 +0100)]
ACPI: Fix build for CONFIG_NET unset

Several ACPI drivers fail to build if CONFIG_NET is unset, because
they refer to things depending on CONFIG_THERMAL that in turn depends
on CONFIG_NET.  However, CONFIG_THERMAL doesn't really need to depend
on CONFIG_NET, because the only part of it requiring CONFIG_NET is
the netlink interface in thermal_sys.c.

Put the netlink interface in thermal_sys.c under #ifdef CONFIG_NET
and remove the dependency of CONFIG_THERMAL on CONFIG_NET from
drivers/thermal/Kconfig.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Len Brown <lenb@kernel.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Luming Yu <luming.yu@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Tue, 1 Mar 2011 01:58:09 +0000 (17:58 -0800)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm: fix unsigned vs signed comparison issue in modeset ctl ioctl.
  drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo

13 years agoMerge branch 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Tue, 1 Mar 2011 01:57:30 +0000 (17:57 -0800)]
Merge branch 'omap-fixes-for-linus' of git://git./linux/kernel/git/tmlind/linux-omap-2.6

* 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6:
  omap4: prcm: Fix the CPUx clockdomain offsets
  OMAP2+: clocksource: fix crash on boot when !CONFIG_OMAP_32K_TIMER
  OMAP2/3: clock: fix fint calculation for DPLL_FREQSEL
  OMAP2+: mailbox: fix lookups for multiple mailboxes
  OMAP2420: mailbox: fix IVA vs DSP IRQ numbering
  mach-omap2: smartreflex: world-writable debugfs voltage files
  mach-omap2: pm: world-writable debugfs timer files
  mach-omap2: mux: world-writable debugfs files

13 years agoMerge branches 'perf-fixes-for-linus', 'x86-fixes-for-linus' and 'timers-fixes-for...
Linus Torvalds [Tue, 1 Mar 2011 01:55:08 +0000 (17:55 -0800)]
Merge branches 'perf-fixes-for-linus', 'x86-fixes-for-linus' and 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf timechart: Fix max number of cpus
  perf timechart: Fix black idle boxes in the title
  perf hists: Print number of samples, not the period sum

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86: Use u32 instead of long to set reset vector back to 0

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  clockevents: Prevent oneshot mode when broadcast device is periodic

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi...
Linus Torvalds [Tue, 1 Mar 2011 01:53:04 +0000 (17:53 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mszeredi/fuse

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
  fuse: fix truncate after open
  fuse: fix hang of single threaded fuseblk filesystem

13 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec...
Linus Torvalds [Tue, 1 Mar 2011 01:52:47 +0000 (17:52 -0800)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jlbec/ocfs2

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jlbec/ocfs2:
  ocfs2: Check heartbeat mode for kernel stacks only
  Ocfs2/refcounttree: Fix a bug for refcounttree to writeback clusters in a right number.
  ocfs2: Fix estimate of necessary credits for mkdir

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Tue, 1 Mar 2011 01:47:09 +0000 (17:47 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  eukrea-tlv320: fix platform_name
  ASoC: correct pxa AC97 DAI names
  ALSA: hda - Add support for new IDT 92HD98 and 92HD99 codecs
  ALSA: HDA: Add ideapad quirk for two Dell machines
  ALSA: HDA: Add a new Conexant codec 506e (20590)
  ALSA: usb-audio: fix oops due to cleanup race when disconnecting
  ASoC: Hook wm_hubs micbiases up to CLK_SYS
  ASoC: Correct definition of WM8903_VMID_RES_5K
  ASoC: Fix WM8958 default microphone detection argument ordering
  ALSA: HDA: Fix mic initialization in VIA auto parser
  ALSA: fix one memory leak in sound jack

13 years agomm: <asm-generic/pgtable.h> must include <linux/mm_types.h>
Ben Hutchings [Sun, 27 Feb 2011 05:41:35 +0000 (05:41 +0000)]
mm: <asm-generic/pgtable.h> must include <linux/mm_types.h>

Commit e2cda3226481 ("thp: add pmd mangling generic functions") replaced
some macros in <asm-generic/pgtable.h> with inline functions.

If the functions are to be defined (not all architectures need them)
then struct vm_area_struct must be defined first.  So include
<linux/mm_types.h>.

Fixes a build failure seen in Debian:

    CC [M]  drivers/media/dvb/mantis/mantis_pci.o
  In file included from arch/arm/include/asm/pgtable.h:460,
                   from drivers/media/dvb/mantis/mantis_pci.c:25:
  include/asm-generic/pgtable.h: In function 'ptep_test_and_clear_young':
  include/asm-generic/pgtable.h:29: error: dereferencing pointer to incomplete type

Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agox86: Use u32 instead of long to set reset vector back to 0
Don Zickus [Tue, 8 Feb 2011 04:25:00 +0000 (23:25 -0500)]
x86: Use u32 instead of long to set reset vector back to 0

A customer of ours, complained that when setting the reset
vector back to 0, it trashed other data and hung their box.
They noticed when only 4 bytes were set to 0 instead of 8,
everything worked correctly.

Mathew pointed out:

 |
 | We're supposed to be resetting trampoline_phys_low and
 | trampoline_phys_high here, which are two 16-bit values.
 | Writing 64 bits is definitely going to overwrite space
 | that we're not supposed to be touching.
 |

So limit the area modified to u32.

Signed-off-by: Don Zickus <dzickus@redhat.com>
Acked-by: Matthew Garrett <mjg@redhat.com>
Cc: <stable@kernel.org>
LKML-Reference: <1297139100-424-1-git-send-email-dzickus@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoperf timechart: Fix max number of cpus
Thomas Renninger [Sun, 27 Feb 2011 21:36:46 +0000 (22:36 +0100)]
perf timechart: Fix max number of cpus

Currently numcpus is determined in pid_put_sample which is only
called on sched_switch/sched_wakeup sample processing.

On a machine with a lot cpus I often saw the last cpu missing.

Check for (max) numcpus on every event happening and in the
beginning. -> fixes the issue for me.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: lenb@kernel.org
LKML-Reference: <1298842606-55712-6-git-send-email-trenn@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoperf timechart: Fix black idle boxes in the title
Thomas Renninger [Sun, 27 Feb 2011 21:36:45 +0000 (22:36 +0100)]
perf timechart: Fix black idle boxes in the title

This fix is needed for eye of gnome and firefox svg viewers.
Only Inkscape can handle the broken case.

Compare with the other svg_legenda_box declarations, looks
like a typo slipped in at this place.

Signed-off-by: Thomas Renninger <trenn@suse.de>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
Cc: lenb@kernel.org
LKML-Reference: <1298842606-55712-5-git-send-email-trenn@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoMerge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next into...
Dave Airlie [Mon, 28 Feb 2011 05:35:16 +0000 (15:35 +1000)]
Merge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next into drm-fixes

* 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next:
  drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo

13 years agodrm: fix unsigned vs signed comparison issue in modeset ctl ioctl.
Dave Airlie [Wed, 23 Feb 2011 22:35:06 +0000 (08:35 +1000)]
drm: fix unsigned vs signed comparison issue in modeset ctl ioctl.

This fixes CVE-2011-1013.

Reported-by: Matthiew Herrb (OpenBSD X.org team)
Cc: stable@kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
13 years agodrm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo
Ben Skeggs [Mon, 28 Feb 2011 04:22:12 +0000 (14:22 +1000)]
drm/nv50-nvc0: make sure vma is definitely unmapped when destroying bo

Somehow fixes a misrendering + hang at GDM startup on my NVA8...

My first guess would have been stale TLB entries laying around that a new
bo then accidentally inherits.  That doesn't make a great deal of sense
however, as when we mapped the pages for the new bo the TLBs would've
gotten flushed anyway.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
13 years agohwmon: (adt7411) add MODULE_DEVICE_TABLE
axel lin [Thu, 24 Feb 2011 02:22:01 +0000 (02:22 +0000)]
hwmon: (adt7411) add MODULE_DEVICE_TABLE

The device table is required to load modules based on modaliases.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
13 years agohwmon: (ad7414) add MODULE_DEVICE_TABLE
axel lin [Thu, 24 Feb 2011 02:20:37 +0000 (02:20 +0000)]
hwmon: (ad7414) add MODULE_DEVICE_TABLE

The device table is required to load modules based on modaliases.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com>
13 years agoMerge branch 'fix/asoc' into for-linus
Takashi Iwai [Sat, 26 Feb 2011 10:27:47 +0000 (11:27 +0100)]
Merge branch 'fix/asoc' into for-linus

13 years agoclockevents: Prevent oneshot mode when broadcast device is periodic
Thomas Gleixner [Fri, 25 Feb 2011 21:34:23 +0000 (22:34 +0100)]
clockevents: Prevent oneshot mode when broadcast device is periodic

When the per cpu timer is marked CLOCK_EVT_FEAT_C3STOP, then we only
can switch into oneshot mode, when the backup broadcast device
supports oneshot mode as well. Otherwise we would try to switch the
broadcast device into an unsupported mode unconditionally. This went
unnoticed so far as the current available broadcast devices support
oneshot mode. Seth unearthed this problem while debugging and working
around an hpet related BIOS wreckage.

Add the necessary check to tick_is_oneshot_available().

Reported-and-tested-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
LKML-Reference: <alpine.LFD.2.00.1102252231200.2701@localhost6.localdomain6>
Cc: stable@kernel.org # .21 ->
13 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Fri, 25 Feb 2011 23:15:17 +0000 (15:15 -0800)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unset

13 years agorapidio: fix sysfs config attribute to access 16MB of maint space
Alexandre Bounine [Fri, 25 Feb 2011 22:44:31 +0000 (14:44 -0800)]
rapidio: fix sysfs config attribute to access 16MB of maint space

Fixes sysfs config attribute to allow access to entire 16MB maintenance
space of RapidIO devices.

Signed-off-by: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Micha Nelissen <micha@neli.hopto.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agopps: initialize ts_real properly
Alexander Gordeev [Fri, 25 Feb 2011 22:44:30 +0000 (14:44 -0800)]
pps: initialize ts_real properly

Initialize ts_real.flags to fix compiler warning about possible
uninitialized use of this field.

Signed-off-by: Alexander Gordeev <lasaine@lvk.cs.msu.su>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Rodolfo Giometti <giometti@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomemcg: more mem_cgroup_uncharge() batching
Hugh Dickins [Fri, 25 Feb 2011 22:44:29 +0000 (14:44 -0800)]
memcg: more mem_cgroup_uncharge() batching

It seems odd that truncate_inode_pages_range(), called not only when
truncating but also when evicting inodes, has mem_cgroup_uncharge_start
and _end() batching in its second loop to clear up a few leftovers, but
not in its first loop that does almost all the work: add them there too.

Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Acked-by: Balbir Singh <balbir@linux.vnet.ibm.com>
Acked-by: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agothp: fix interleaving for transparent hugepages
Andi Kleen [Fri, 25 Feb 2011 22:44:28 +0000 (14:44 -0800)]
thp: fix interleaving for transparent hugepages

The THP code didn't pass the correct interleaving shift to the memory
policy code.  Fix this here by adjusting for the order.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Christoph Lameter <cl@linux.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoaio: fix race between io_destroy() and io_submit()
Jan Kara [Fri, 25 Feb 2011 22:44:27 +0000 (14:44 -0800)]
aio: fix race between io_destroy() and io_submit()

A race can occur when io_submit() races with io_destroy():

 CPU1 CPU2
io_submit()
  do_io_submit()
    ...
    ctx = lookup_ioctx(ctx_id);
io_destroy()
    Now do_io_submit() holds the last reference to ctx.
    ...
    queue new AIO
    put_ioctx(ctx) - frees ctx with active AIOs

We solve this issue by checking whether ctx is being destroyed in AIO
submission path after adding new AIO to ctx.  Then we are guaranteed that
either io_destroy() waits for new AIO or we see that ctx is being
destroyed and bail out.

Cc: Nick Piggin <npiggin@kernel.dk>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoaio: fix rcu ioctx lookup
Nick Piggin [Fri, 25 Feb 2011 22:44:26 +0000 (14:44 -0800)]
aio: fix rcu ioctx lookup

aio-dio-invalidate-failure GPFs in aio_put_req from io_submit.

lookup_ioctx doesn't implement the rcu lookup pattern properly.
rcu_read_lock does not prevent refcount going to zero, so we might take
a refcount on a zero count ioctx.

Fix the bug by atomically testing for zero refcount before incrementing.

[jack@suse.cz: added comment into the code]
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: fix dubious code in __count_immobile_pages()
Namhyung Kim [Fri, 25 Feb 2011 22:44:25 +0000 (14:44 -0800)]
mm: fix dubious code in __count_immobile_pages()

When pfn_valid_within() failed 'iter' was incremented twice.

Signed-off-by: Namhyung Kim <namhyung@gmail.com>
Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/rtc/rtc-ds3232.c: fix time range difference between linux and RTC chip
Lei Xu [Fri, 25 Feb 2011 22:44:23 +0000 (14:44 -0800)]
drivers/rtc/rtc-ds3232.c: fix time range difference between linux and RTC chip

In linux rtc_time struct, tm_mon range is 0~11, tm_wday range is 0~6,
while in RTC HW REG, month range is 1~12, day of the week range is 1~7,
this patch adjusts difference of them.

The efect of this bug was that most of month will be operated on as the
next month by the hardware (When in Jan it maybe even worse).  For
example, if in May, software wrote 4 to the hardware, which handled it as
April.  Then the logic would be different between software and hardware,
which would cause weird things to happen.

Signed-off-by: Lei Xu <B33228@freescale.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Cc: john stultz <johnstul@us.ibm.com>
Cc: Jack Lan <jack.lan@freescale.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoldm: corrupted partition table can cause kernel oops
Timo Warns [Fri, 25 Feb 2011 22:44:21 +0000 (14:44 -0800)]
ldm: corrupted partition table can cause kernel oops

The kernel automatically evaluates partition tables of storage devices.
The code for evaluating LDM partitions (in fs/partitions/ldm.c) contains
a bug that causes a kernel oops on certain corrupted LDM partitions.  A
kernel subsystem seems to crash, because, after the oops, the kernel no
longer recognizes newly connected storage devices.

The patch changes ldm_parse_vmdb() to Validate the value of vblk_size.

Signed-off-by: Timo Warns <warns@pre-sense.de>
Cc: Eugene Teo <eugeneteo@kernel.sg>
Acked-by: Richard Russon <ldm@flatcap.org>
Cc: Harvey Harrison <harvey.harrison@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: vmscan: stop reclaim/compaction earlier due to insufficient progress if !__GFP_REPEAT
Mel Gorman [Fri, 25 Feb 2011 22:44:20 +0000 (14:44 -0800)]
mm: vmscan: stop reclaim/compaction earlier due to insufficient progress if !__GFP_REPEAT

should_continue_reclaim() for reclaim/compaction allows scanning to
continue even if pages are not being reclaimed until the full list is
scanned.  In terms of allocation success, this makes sense but potentially
it introduces unwanted latency for high-order allocations such as
transparent hugepages and network jumbo frames that would prefer to fail
the allocation attempt and fallback to order-0 pages.  Worse, there is a
potential that the full LRU scan will clear all the young bits, distort
page aging information and potentially push pages into swap that would
have otherwise remained resident.

This patch will stop reclaim/compaction if no pages were reclaimed in the
last SWAP_CLUSTER_MAX pages that were considered.  For allocations such as
hugetlbfs that use __GFP_REPEAT and have fewer fallback options, the full
LRU list may still be scanned.

Order-0 allocation should not be affected because RECLAIM_MODE_COMPACTION
is not set so the following avoids the gfp_mask being examined:

        if (!(sc->reclaim_mode & RECLAIM_MODE_COMPACTION))
                return false;

A tool was developed based on ftrace that tracked the latency of
high-order allocations while transparent hugepage support was enabled and
three benchmarks were run.  The "fix-infinite" figures are 2.6.38-rc4 with
Johannes's patch "vmscan: fix zone shrinking exit when scan work is done"
applied.

  STREAM Highorder Allocation Latency Statistics
                 fix-infinite     break-early
  1 :: Count            10298           10229
  1 :: Min             0.4560          0.4640
  1 :: Mean            1.0589          1.0183
  1 :: Max            14.5990         11.7510
  1 :: Stddev          0.5208          0.4719
  2 :: Count                2               1
  2 :: Min             1.8610          3.7240
  2 :: Mean            3.4325          3.7240
  2 :: Max             5.0040          3.7240
  2 :: Stddev          1.5715          0.0000
  9 :: Count           111696          111694
  9 :: Min             0.5230          0.4110
  9 :: Mean           10.5831         10.5718
  9 :: Max            38.4480         43.2900
  9 :: Stddev          1.1147          1.1325

Mean time for order-1 allocations is reduced.  order-2 looks increased but
with so few allocations, it's not particularly significant.  THP mean
allocation latency is also reduced.  That said, allocation time varies so
significantly that the reductions are within noise.

Max allocation time is reduced by a significant amount for low-order
allocations but reduced for THP allocations which presumably are now
breaking before reclaim has done enough work.

  SysBench Highorder Allocation Latency Statistics
                 fix-infinite     break-early
  1 :: Count            15745           15677
  1 :: Min             0.4250          0.4550
  1 :: Mean            1.1023          1.0810
  1 :: Max            14.4590         10.8220
  1 :: Stddev          0.5117          0.5100
  2 :: Count                1               1
  2 :: Min             3.0040          2.1530
  2 :: Mean            3.0040          2.1530
  2 :: Max             3.0040          2.1530
  2 :: Stddev          0.0000          0.0000
  9 :: Count             2017            1931
  9 :: Min             0.4980          0.7480
  9 :: Mean           10.4717         10.3840
  9 :: Max            24.9460         26.2500
  9 :: Stddev          1.1726          1.1966

Again, mean time for order-1 allocations is reduced while order-2
allocations are too few to draw conclusions from.  The mean time for THP
allocations is also slightly reduced albeit the reductions are within
varianes.

Once again, our maximum allocation time is significantly reduced for
low-order allocations and slightly increased for THP allocations.

  Anon stream mmap reference Highorder Allocation Latency Statistics
  1 :: Count             1376            1790
  1 :: Min             0.4940          0.5010
  1 :: Mean            1.0289          0.9732
  1 :: Max             6.2670          4.2540
  1 :: Stddev          0.4142          0.2785
  2 :: Count                1               -
  2 :: Min             1.9060               -
  2 :: Mean            1.9060               -
  2 :: Max             1.9060               -
  2 :: Stddev          0.0000               -
  9 :: Count            11266           11257
  9 :: Min             0.4990          0.4940
  9 :: Mean        27250.4669      24256.1919
  9 :: Max      11439211.0000    6008885.0000
  9 :: Stddev     226427.4624     186298.1430

This benchmark creates one thread per CPU which references an amount of
anonymous memory 1.5 times the size of physical RAM.  This pounds swap
quite heavily and is intended to exercise THP a bit.

Mean allocation time for order-1 is reduced as before.  It's also reduced
for THP allocations but the variations here are pretty massive due to
swap.  As before, maximum allocation times are significantly reduced.

Overall, the patch reduces the mean and maximum allocation latencies for
the smaller high-order allocations.  This was with Slab configured so it
would be expected to be more significant with Slub which uses these size
allocations more aggressively.

The mean allocation times for THP allocations are also slightly reduced.
The maximum latency was slightly increased as predicted by the comments
due to reclaim/compaction breaking early.  However, workloads care more
about the latency of lower-order allocations than THP so it's an
acceptable trade-off.

Signed-off-by: Mel Gorman <mel@csn.ul.ie>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Minchan Kim <minchan.kim@gmail.com>
Acked-by: Andrea Arcangeli <aarcange@redhat.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/nfc/pn544.c: add missing regulator
Matti J. Aaltonen [Fri, 25 Feb 2011 22:44:19 +0000 (14:44 -0800)]
drivers/nfc/pn544.c: add missing regulator

The regulator framework is used for power management.  The regulators are
only named in the driver code, the actual control stuff is in the board
file for each architecture or use case.

The PN544 chip has three regulators that can be controlled or not -
depending on the architecture where the chip is being used.  So some of
the regulators may not be controllable.  In our current case the third
regulator, which was missing from the code, went unnoticed because we
didn't need to control it.  To be as general as possible - in this respect
- the driver needs to list all regulators.  Then the board file can be
used to actually set the usage.

Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agodrivers/nfc/Kconfig: use full form of the NFC acronym
Matti J. Aaltonen [Fri, 25 Feb 2011 22:44:18 +0000 (14:44 -0800)]
drivers/nfc/Kconfig: use full form of the NFC acronym

Spell out the NFC acronym when it's shown for the first time.

Signed-off-by: Matti J. Aaltonen <matti.j.aaltonen@nokia.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoswiotlb: fix wrong panic
FUJITA Tomonori [Fri, 25 Feb 2011 22:44:16 +0000 (14:44 -0800)]
swiotlb: fix wrong panic

swiotlb's map_page wrongly calls panic() when it can't find a buffer fit
for device's dma mask.  It should return an error instead.

Devices with an odd dma mask (i.e.  under 4G) like b44 network card hit
this bug (the system crashes):

   http://marc.info/?l=linux-kernel&m=129648943830106&w=2

If swiotlb returns an error, b44 driver can use the own bouncing
mechanism.

Reported-by: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Tested-by: Arkadiusz Miskiewicz <arekm@maven.pl>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMAINTAINERS: add Chinese documentation maintainer
Harry Wei [Fri, 25 Feb 2011 22:44:15 +0000 (14:44 -0800)]
MAINTAINERS: add Chinese documentation maintainer

I have translated some kernel documentation so I wish to maintain the
Chinese documentation in our kernel directories.

Signed-off-by: Harry Wei <harryxiyou@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Greg KH <greg@kroah.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: grab rcu read lock in move_pages()
Greg Thelen [Fri, 25 Feb 2011 22:44:13 +0000 (14:44 -0800)]
mm: grab rcu read lock in move_pages()

The move_pages() usage of find_task_by_vpid() requires rcu_read_lock() to
prevent free_pid() from reclaiming the pid.

Without this patch, RCU warnings are printed in v2.6.38-rc4 move_pages()
with:

  CONFIG_LOCKUP_DETECTOR=y
  CONFIG_PREEMPT=y
  CONFIG_LOCKDEP=y
  CONFIG_PROVE_LOCKING=y
  CONFIG_PROVE_RCU=y

Previously, migrate_pages() went through a similar transformation
replacing usage of tasklist_lock with rcu read lock:

  commit 55cfaa3cbdd29c4919ecb5fb8965c310f357e48c
  Author: Zeng Zhaoming <zengzm.kernel@gmail.com>
  Date:   Thu Dec 2 14:31:13 2010 -0800

      mm/mempolicy.c: add rcu read lock to protect pid structure

  commit 1e50df39f6e2c3a4a3394df62baa8a213df16c54
  Author: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
  Date:   Thu Jan 13 15:46:14 2011 -0800

      mempolicy: remove tasklist_lock from migrate_pages

Signed-off-by: Greg Thelen <gthelen@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Minchan Kim <minchan.kim@gmail.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Zeng Zhaoming <zengzm.kernel@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoepoll: prevent creating circular epoll structures
Davide Libenzi [Fri, 25 Feb 2011 22:44:12 +0000 (14:44 -0800)]
epoll: prevent creating circular epoll structures

In several places, an epoll fd can call another file's ->f_op->poll()
method with ep->mtx held.  This is in general unsafe, because that other
file could itself be an epoll fd that contains the original epoll fd.

The code defends against this possibility in its own ->poll() method using
ep_call_nested, but there are several other unsafe calls to ->poll
elsewhere that can be made to deadlock.  For example, the following simple
program causes the call in ep_insert recursively call the original fd's
->poll, leading to deadlock:

 #include <unistd.h>
 #include <sys/epoll.h>

 int main(void) {
     int e1, e2, p[2];
     struct epoll_event evt = {
         .events = EPOLLIN
     };

     e1 = epoll_create(1);
     e2 = epoll_create(2);
     pipe(p);

     epoll_ctl(e2, EPOLL_CTL_ADD, e1, &evt);
     epoll_ctl(e1, EPOLL_CTL_ADD, p[0], &evt);
     write(p[1], p, sizeof p);
     epoll_ctl(e1, EPOLL_CTL_ADD, e2, &evt);

     return 0;
 }

On insertion, check whether the inserted file is itself a struct epoll,
and if so, do a recursive walk to detect whether inserting this file would
create a loop of epoll structures, which could lead to deadlock.

[nelhage@ksplice.com: Use epmutex to serialize concurrent inserts]
Signed-off-by: Davide Libenzi <davidel@xmailserver.org>
Signed-off-by: Nelson Elhage <nelhage@ksplice.com>
Reported-by: Nelson Elhage <nelhage@ksplice.com>
Tested-by: Nelson Elhage <nelhage@ksplice.com>
Cc: <stable@kernel.org> [2.6.34+, possibly earlier]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6
Linus Torvalds [Fri, 25 Feb 2011 22:04:44 +0000 (14:04 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/lrg/voltage-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lrg/voltage-2.6:
  regulator, mc13xxx: Remove pointless test for unsigned less than zero
  regulator: Fix warning with CONFIG_BUG disabled

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable
Linus Torvalds [Fri, 25 Feb 2011 22:03:39 +0000 (14:03 -0800)]
Merge git://git./linux/kernel/git/mason/btrfs-unstable

* git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: fix fiemap bugs with delalloc
  Btrfs: set FMODE_EXCL in btrfs_device->mode
  Btrfs: make btrfs_rm_device() fail gracefully
  Btrfs: Avoid accessing unmapped kernel address
  Btrfs: Fix BTRFS_IOC_SUBVOL_SETFLAGS ioctl
  Btrfs: allow balance to explicitly allocate chunks as it relocates
  Btrfs: put ENOSPC debugging under a mount option

13 years agoMerge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 25 Feb 2011 22:02:33 +0000 (14:02 -0800)]
Merge branch 'x86-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  x86 quirk: Fix polarity for IRQ0 pin2 override on SB800 systems
  x86/mrst: Fix apb timer rating when lapic timer is used
  x86: Fix reboot problem on VersaLogic Menlow boards

13 years agoRTC: fix typo in drivers/rtc/rtc-at91sam9.c
Jelle Martijn Kok [Fri, 25 Feb 2011 19:13:55 +0000 (11:13 -0800)]
RTC: fix typo in drivers/rtc/rtc-at91sam9.c

The member of the rtc_class_ops struct is called alarm_irq_enable and
not alarm_irq_enabled

CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jelle Martijn Kok <jmkok@youcom.nl>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'patches_for_2.6.38rc' of git://git.pwsan.com/linux-2.6 into devel-fixes
Tony Lindgren [Fri, 25 Feb 2011 20:27:14 +0000 (12:27 -0800)]
Merge branch 'patches_for_2.6.38rc' of git://git.pwsan.com/linux-2.6 into devel-fixes

13 years agoomap4: prcm: Fix the CPUx clockdomain offsets
Santosh Shilimkar [Fri, 4 Feb 2011 09:58:57 +0000 (15:28 +0530)]
omap4: prcm: Fix the CPUx clockdomain offsets

CPU0 and CPU1 clockdomain is at the offset of 0x18 from the LPRM base.
The header file has set it wrongly to 0x0. Offset 0x0 is for CPUx power
domain control register

Fix the same.

The autogen scripts is fixed thanks to Benoit Cousson

With the old value, the clockdomain code would access the
*_PWRSTCTRL.POWERSTATE field when it thought it was accessing the
*_CLKSTCTRL.CLKTRCTRL field.  In the worst case, this could cause
system power management to behave incorrectly.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>
Cc: Benoit Cousson <b-cousson@ti.com>
[paul@pwsan.com: added second paragraph to commit message]
Signed-off-by: Paul Walmsley <paul@pwsan.com>
13 years agoMerge branch 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
Linus Torvalds [Fri, 25 Feb 2011 19:14:44 +0000 (11:14 -0800)]
Merge branch 'usb-linus' of git://git./linux/kernel/git/gregkh/usb-2.6

* 'usb-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6:
  usb: musb: core: set has_tt flag
  USB: xhci: mark local functions as static
  USB: xhci: fix couple sparse annotations
  USB: xhci: rework xhci_print_ir_set() to get ir set from xhci itself
  USB: Reset USB 3.0 devices on (re)discovery
  xhci: Fix an error in count_sg_trbs_needed()
  xhci: Fix errors in the running total calculations in the TRB math
  xhci: Clarify some expressions in the TRB math
  xhci: Avoid BUG() in interrupt context

13 years agoMerge branch 'for-linus' of git://neil.brown.name/md
Linus Torvalds [Fri, 25 Feb 2011 19:13:26 +0000 (11:13 -0800)]
Merge branch 'for-linus' of git://neil.brown.name/md

* 'for-linus' of git://neil.brown.name/md:
  md: Fix - again - partition detection when array becomes active
  Fix over-zealous flush_disk when changing device size.
  md: avoid spinlock problem in blk_throtl_exit
  md: correctly handle probe of an 'mdp' device.
  md: don't set_capacity before array is active.
  md: Fix raid1->raid0 takeover

13 years agoRxRPC: Allocate tokens with kzalloc to avoid oops in rxrpc_destroy
Anton Blanchard [Fri, 25 Feb 2011 15:33:17 +0000 (15:33 +0000)]
RxRPC: Allocate tokens with kzalloc to avoid oops in rxrpc_destroy

With slab poisoning enabled, I see the following oops:

  Unable to handle kernel paging request for data at address 0x6b6b6b6b6b6b6b73
  ...
  NIP [c0000000006bc61c] .rxrpc_destroy+0x44/0x104
  LR [c0000000006bc618] .rxrpc_destroy+0x40/0x104
  Call Trace:
  [c0000000feb2bc00] [c0000000006bc618] .rxrpc_destroy+0x40/0x104 (unreliable)
  [c0000000feb2bc90] [c000000000349b2c] .key_cleanup+0x1a8/0x20c
  [c0000000feb2bd40] [c0000000000a2920] .process_one_work+0x2f4/0x4d0
  [c0000000feb2be00] [c0000000000a2d50] .worker_thread+0x254/0x468
  [c0000000feb2bec0] [c0000000000a868c] .kthread+0xbc/0xc8
  [c0000000feb2bf90] [c000000000020e00] .kernel_thread+0x54/0x70

We aren't initialising token->next, but the code in destroy_context relies
on the list being NULL terminated. Use kzalloc to zero out all the fields.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoafs: Fix oops in afs_unlink_writeback
Anton Blanchard [Fri, 25 Feb 2011 15:33:02 +0000 (15:33 +0000)]
afs: Fix oops in afs_unlink_writeback

I'm seeing the following oops when testing afs:

  Unable to handle kernel paging request for data at address 0x00000008
  ...
  NIP [c0000000003393b0] .afs_unlink_writeback+0x38/0xc0
  LR [c00000000033987c] .afs_put_writeback+0x98/0xec
  Call Trace:
  [c00000000345f600] [c00000000033987c] .afs_put_writeback+0x98/0xec
  [c00000000345f690] [c00000000033ae80] .afs_write_begin+0x6a4/0x75c
  [c00000000345f790] [c00000000012b77c] .generic_file_buffered_write+0x148/0x320
  [c00000000345f8d0] [c00000000012e1b8] .__generic_file_aio_write+0x37c/0x3e4
  [c00000000345f9d0] [c00000000012e2a8] .generic_file_aio_write+0x88/0xfc
  [c00000000345fa90] [c0000000003390a8] .afs_file_write+0x10c/0x178
  [c00000000345fb40] [c000000000188788] .do_sync_write+0xc4/0x128
  [c00000000345fcc0] [c000000000189658] .vfs_write+0xe8/0x1d8
  [c00000000345fd70] [c000000000189884] .SyS_write+0x68/0xb0
  [c00000000345fe30] [c000000000008564] syscall_exit+0x0/0x40

afs_write_begin hits an error and calls afs_unlink_writeback. In there
we do list_del_init on an uninitialised list.

The patch below initialises ->link when creating the afs_writeback struct.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agofuse: fix truncate after open
Miklos Szeredi [Fri, 25 Feb 2011 13:44:58 +0000 (14:44 +0100)]
fuse: fix truncate after open

Commit e1181ee6 "vfs: pass struct file to do_truncate on O_TRUNC
opens" broke the behavior of open(O_TRUNC|O_RDONLY) in fuse.  Fuse
assumed that when called from open, a truncate() will be done, not an
ftruncate().

Fix by restoring the old behavior, based on the ATTR_OPEN flag.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
13 years agofuse: fix hang of single threaded fuseblk filesystem
Miklos Szeredi [Fri, 25 Feb 2011 13:44:58 +0000 (14:44 +0100)]
fuse: fix hang of single threaded fuseblk filesystem

Single threaded NTFS-3G could get stuck if a delayed RELEASE reply
triggered a DESTROY request via path_put().

Fix this by

 a) making RELEASE requests synchronous, whenever possible, on fuseblk
 filesystems

 b) if not possible (triggered by an asynchronous read/write) then do
 the path_put() in a separate thread with schedule_work().

Reported-by: Oliver Neukum <oneukum@suse.de>
Cc: stable@kernel.org
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
13 years agoeukrea-tlv320: fix platform_name
Eric Bénard [Fri, 25 Feb 2011 12:47:46 +0000 (13:47 +0100)]
eukrea-tlv320: fix platform_name

commit f0fba2ad1b6b53d5360125c41953b7afcd6deff0 included a mistake
on the name of the platform in the snd_soc_dai_link structure.

Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
13 years agoASoC: correct pxa AC97 DAI names
Dmitry Eremin-Solenikov [Tue, 22 Feb 2011 23:29:11 +0000 (02:29 +0300)]
ASoC: correct pxa AC97 DAI names

Correct names for pxa AC97 DAI are pxa2xx-ac97 and pxa2xx-ac97-aux. Fix
that for all PXA platforms.

Signed-off-by: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@kernel.org
13 years agoperf hists: Print number of samples, not the period sum
Arnaldo Carvalho de Melo [Thu, 17 Feb 2011 12:37:23 +0000 (10:37 -0200)]
perf hists: Print number of samples, not the period sum

So that we match the header where we state the number of events with the
"Samples" column when using 'perf report -n/--show-nr-samples':

 [root@emilia ~]# perf record -a sleep 1
 [ perf record: Woken up 1 times to write data ]
 [ perf record: Captured and wrote 0.111 MB perf.data (~4860 samples) ]
 [root@emilia ~]# perf report --stdio --show-nr-samples
 # Events: 11  cycles
 #
 # Overhead  Samples        Command       Shared Object                        Symbol
 # ........ ..........  ...........  ..................  ............................
 #
     16.65%          1        sleep  [kernel.kallsyms]   [k] unmap_vmas
     16.10%          1         perf  libpthread-2.12.so  [.] __pthread_cleanup_push_defer
     15.79%          2         perf  [kernel.kallsyms]   [k] format_decode
     12.88%          1  kworker/1:2  [kernel.kallsyms]   [k] cache_reap
     10.69%          1      swapper  [kernel.kallsyms]   [k] _raw_spin_lock
      7.55%          1        sleep  [kernel.kallsyms]   [k] prepare_exec_creds
      6.00%          1         perf  [jbd2]              [k] start_this_handle
      5.29%          1         perf  [kernel.kallsyms]   [k] seq_read
      4.75%          1         perf  [kernel.kallsyms]   [k] get_pid_task
      4.30%          1         perf  [kernel.kallsyms]   [k] _raw_spin_unlock_irqrestore

 #
 # (For a higher level overview, try: perf report --sort comm,dso)
 #
 [root@emilia ~]#

Reported-by: Stephane Eranian <eranian@google.com>
Reported-by: Cliff Wickman <cpw@sgi.com>
Acked-by: Stephane Eranian <eranian@google.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: <stable@kernel.org>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
[ cherry-picked it from perf/core, as it has been reported by others as well. ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoregulator, mc13xxx: Remove pointless test for unsigned less than zero
Jesper Juhl [Wed, 23 Feb 2011 22:45:55 +0000 (23:45 +0100)]
regulator, mc13xxx: Remove pointless test for unsigned less than zero

The variable 'val' is a 'unsigned int', so it can never be less than zero.
This fact makes the "val < 0" part of the test done in BUG_ON() in
mc13xxx_regulator_get_voltage() rather pointles since it can never have
any effect.
This patch removes the pointless test.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Alberto Panizzo <maramaopercheseimorto@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoregulator: Fix warning with CONFIG_BUG disabled
Mark Brown [Wed, 2 Feb 2011 20:17:22 +0000 (20:17 +0000)]
regulator: Fix warning with CONFIG_BUG disabled

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
13 years agoMerge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied...
Linus Torvalds [Fri, 25 Feb 2011 01:08:48 +0000 (17:08 -0800)]
Merge branch 'drm-fixes' of git://git./linux/kernel/git/airlied/drm-2.6

* 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6:
  drm/i915: Fix unintended recursion in ironlake_disable_rc6
  drm/i915: fix corruptions on i8xx due to relaxed fencing
  drm/i915: skip FDI & PCH enabling for DP_A
  agp/intel: Experiment with a 855GM GWB bit
  drm/i915: don't enable FDI & transcoder interrupts after all
  drm/i915: Ignore a hung GPU when flushing the framebuffer prior to a switch

13 years agoMerge branch 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle...
Dave Airlie [Thu, 24 Feb 2011 22:40:26 +0000 (08:40 +1000)]
Merge branch 'drm-intel-fixes' of git://git./linux/kernel/git/ickle/drm-intel into drm-fixes

* 'drm-intel-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ickle/drm-intel:
  drm/i915: Fix unintended recursion in ironlake_disable_rc6

13 years agoMerge branch 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Thu, 24 Feb 2011 20:22:14 +0000 (12:22 -0800)]
Merge branch 'kvm-updates/2.6.38' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: SVM: Advance instruction pointer in dr_intercept

13 years agoOMAP2+: clocksource: fix crash on boot when !CONFIG_OMAP_32K_TIMER
Paul Walmsley [Wed, 23 Feb 2011 02:59:49 +0000 (19:59 -0700)]
OMAP2+: clocksource: fix crash on boot when !CONFIG_OMAP_32K_TIMER

OMAP2+ kernels built without CONFIG_OMAP_32K_TIMER crash on boot after the
2.6.38 sched_clock changes:

[    0.000000] OMAP clockevent source: GPTIMER1 at 13000000 Hz
[    0.000000] Unable to handle kernel NULL pointer dereference at virtual address 00000000
[    0.000000] pgd = c0004000
[    0.000000] [00000000] *pgd=00000000
[    0.000000] Internal error: Oops: 80000005 [#1] SMP
[    0.000000] last sysfs file:
[    0.000000] Modules linked in:
[    0.000000] CPU: 0    Not tainted  (2.6.38-rc5-00057-g04aa67d #152)
[    0.000000] PC is at 0x0
[    0.000000] LR is at sched_clock_poll+0x2c/0x3c

Without CONFIG_OMAP_32K_TIMER, the kernel has an clockevent and
clocksource resolution about three orders of magnitude higher than
with CONFIG_OMAP_32K_TIMER set.  The tradeoff is that the lowest
power consumption states are not available.

Fix by calling init_sched_clock() from the GPTIMER clocksource init code.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
13 years agoMAINTAINERS: Update email address
Herton Ronaldo Krzesinski [Thu, 24 Feb 2011 18:18:07 +0000 (15:18 -0300)]
MAINTAINERS: Update email address

Signed-off-by: Herton Ronaldo Krzesinski <herton.krzesinski@canonical.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agox86 quirk: Fix polarity for IRQ0 pin2 override on SB800 systems
Andreas Herrmann [Thu, 24 Feb 2011 14:53:46 +0000 (15:53 +0100)]
x86 quirk: Fix polarity for IRQ0 pin2 override on SB800 systems

On some SB800 systems polarity for IOAPIC pin2 is wrongly
specified as low active by BIOS. This caused system hangs after
resume from S3 when HPET was used in one-shot mode on such
systems because a timer interrupt was missed (HPET signal is
high active).

For more details see:

  http://marc.info/?l=linux-kernel&m=129623757413868

Tested-by: Manoj Iyer <manoj.iyer@canonical.com>
Tested-by: Andre Przywara <andre.przywara@amd.com>
Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: stable@kernel.org # 37.x, 32.x
LKML-Reference: <20110224145346.GD3658@alberich.amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agousb: musb: core: set has_tt flag
Felipe Balbi [Thu, 24 Feb 2011 08:36:53 +0000 (10:36 +0200)]
usb: musb: core: set has_tt flag

MUSB is a non-standard host implementation which
can handle all speeds with the same core. We need
to set has_tt flag after commit
d199c96d41d80a567493e12b8e96ea056a1350c1 (USB: prevent
buggy hubs from crashing the USB stack) in order for
MUSB HCD to continue working.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Cc: stable <stable@kernel.org>
Cc: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Michael Jones <michael.jones@matrix-vision.de>
Tested-by: Alexander Holler <holler@ahsoftware.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoPM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unset
Rafael J. Wysocki [Thu, 24 Feb 2011 10:10:01 +0000 (11:10 +0100)]
PM: Make ACPI wakeup from S5 work again when CONFIG_PM_SLEEP is unset

Commit 074037e (PM / Wakeup: Introduce wakeup source objects and
event statistics (v3)) caused ACPI wakeup to only work if
CONFIG_PM_SLEEP is set, but it also worked for CONFIG_PM_SLEEP unset
before.  This can be fixed by making device_set_wakeup_enable(),
device_init_wakeup() and device_may_wakeup() work in the same way
as before commit 074037e when CONFIG_PM_SLEEP is unset.

Reported-and-tested-by: Justin Maggard <jmaggard10@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
13 years agodrm/i915: Fix unintended recursion in ironlake_disable_rc6
Chris Wilson [Thu, 24 Feb 2011 09:42:52 +0000 (09:42 +0000)]
drm/i915: Fix unintended recursion in ironlake_disable_rc6

After disabling, we're meant to teardown the bo used for the contexts,
not recurse into ourselves again and preventing module unload.

Reported-and-tested-by: Ben Widawsky <bwidawsk@gmail.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
13 years agoALSA: hda - Add support for new IDT 92HD98 and 92HD99 codecs
Vitaliy Kulikov [Tue, 22 Feb 2011 23:32:19 +0000 (17:32 -0600)]
ALSA: hda - Add support for new IDT 92HD98 and 92HD99 codecs

Also fix number of 92HD87 pins to exclude invalid pins.

Signed-off-by: Vitaliy Kulikov <Vitaliy.Kulikov@idt.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoblock: bd_link_disk_holder() should hold on to holder_dir
Tejun Heo [Thu, 24 Feb 2011 08:56:32 +0000 (09:56 +0100)]
block: bd_link_disk_holder() should hold on to holder_dir

The new implementation of bd_link_disk_holder() added by 49731baa41d
(block: restore multiple bd_link_disk_holder() support) didn't get an
extra reference for the holder_dir kobject of the slave bdev; however,
bdev kills holder_dir on removal, not release, so if the slave bdev is
removed while there are holder links, the holder_dir will be destroyed
while there still are holder links, which leads to oops later when
bd_unlink_disk_order() tries to remove those links.

Make bd_link_disk_holder() grab an extra reference for the slave's
holder_dir and put it in bd_unlink_disk_holder().

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: "Hawrylewicz Czarnowski, Przemyslaw" <przemyslaw.hawrylewicz.czarnowski@intel.com>
Tested-by: "Hawrylewicz Czarnowski, Przemyslaw" <przemyslaw.hawrylewicz.czarnowski@intel.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: fix refcounting in swapon
Miklos Szeredi [Thu, 24 Feb 2011 14:49:53 +0000 (15:49 +0100)]
mm: fix refcounting in swapon

Grab a reference to bdev before calling blkdev_get(), which expects
the refcount to be already incremented and either returns success or
decrements the refcount and returns an error.

The bug was introduced by e525fd89 (block: make blkdev_get/put()
handle exclusive access), which didn't take into account this behavior
of blkdev_get().

Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoblock: fix refcounting in BLKBSZSET
Miklos Szeredi [Thu, 24 Feb 2011 14:45:41 +0000 (15:45 +0100)]
block: fix refcounting in BLKBSZSET

Adam Kovari and others reported that disconnecting an USB drive with
an ntfs-3g filesystem would cause "kernel BUG at fs/inode.c:1421!" to
be triggered.

The BUG could be traced back to ioctl(BLKBSZSET), which would
erroneously decrement the refcount on the bdev.  This is because
blkdev_get() expects the refcount to be already incremented and either
returns success or decrements the refcount and returns an error.

The bug was introduced by e525fd89 (block: make blkdev_get/put()
handle exclusive access), which didn't take into account this behavior
of blkdev_get().

This fixes
  https://bugzilla.kernel.org/show_bug.cgi?id=29202
(and likely 29792 too)

Reported-by: Adam Kovari <kovariadam@gmail.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6
Linus Torvalds [Thu, 24 Feb 2011 16:39:46 +0000 (08:39 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  Unlock vfsmount_lock in do_umount

13 years agox86/mrst: Fix apb timer rating when lapic timer is used
Jacob Pan [Thu, 24 Feb 2011 00:07:26 +0000 (16:07 -0800)]
x86/mrst: Fix apb timer rating when lapic timer is used

Need to adjust the clockevent device rating for the structure
that will be registered with clockevent system instead of the
temporary structure.

Without this fix, APB timer rating will be higher than LAPIC
timer such that it can not be released later to be used as the
broadcast timer.

Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <john.stultz@linaro.org>
LKML-Reference: <1298506046-439-1-git-send-email-jacob.jun.pan@linux.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoUnlock vfsmount_lock in do_umount
J. R. Okajima [Wed, 23 Feb 2011 07:59:49 +0000 (16:59 +0900)]
Unlock vfsmount_lock in do_umount

By the commit
b3e19d9 2011-01-07 fs: scale mntget/mntput
vfsmount_lock was introduced around testing mnt_count.
Fix the mis-typed 'unlock'

Signed-off-by: J. R. Okajima <hooanon05@yahoo.co.jp>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
13 years agomd: Fix - again - partition detection when array becomes active
NeilBrown [Thu, 24 Feb 2011 06:26:41 +0000 (17:26 +1100)]
md: Fix - again - partition detection when array becomes active

Revert
    b821eaa572fd737faaf6928ba046e571526c36c6
and
    f3b99be19ded511a1bf05a148276239d9f13eefa

When I wrote the first of these I had a wrong idea about the
lifetime of 'struct block_device'.  It can disappear at any time that
the block device is not open if it falls out of the inode cache.

So relying on the 'size' recorded with it to detect when the
device size has changed and so we need to revalidate, is wrong.

Rather, we really do need the 'changed' attribute stored directly in
the mddev and set/tested as appropriate.

Without this patch, a sequence of:
   mknod / open / close / unlink

(which can cause a block_device to be created and then destroyed)
will result in a rescan of the partition table and consequence removal
and addition of partitions.
Several of these in a row can get udev racing to create and unlink and
other code can get confused.

With the patch, the rescan is only performed when needed and so there
are no races.

This is suitable for any stable kernel from 2.6.35.

Reported-by: "Wojcik, Krzysztof" <krzysztof.wojcik@intel.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org