Commit Graph

286542 Commits

Author SHA1 Message Date
Tejun Heo
11a3122f6c block: strip out locking optimization in put_io_context()
put_io_context() performed a complex trylock dancing to avoid
deferring ioc release to workqueue.  It was also broken on UP because
trylock was always assumed to succeed which resulted in unbalanced
preemption count.

While there are ways to fix the UP breakage, even the most
pathological microbench (forced ioc allocation and tight fork/exit
loop) fails to show any appreciable performance benefit of the
optimization.  Strip it out.  If there turns out to be workloads which
are affected by this change, simpler optimization from the discussion
thread can be applied later.

Signed-off-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <1328514611.21268.66.camel@sli10-conroe>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-02-07 07:51:30 +01:00
Dan Carpenter
822bfa51ce cdrom: use copy_to_user() without the underscores
"nframes" comes from the user and "nframes * CD_FRAMESIZE_RAW" can wrap
on 32 bit systems.  That would have been ok if we used the same wrapped
value for the copy, but we use a shifted value.  We should just use the
checked version of copy_to_user() because it's not going to make a
difference to the speed.

Cc: stable@vger.kernel.com
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-02-06 10:20:45 +01:00
Shaohua Li
9fa73472dd block: fix ioc locking warning
Meelis reported a warning:

WARNING: at kernel/timer.c:1122 run_timer_softirq+0x199/0x1ec()
Hardware name: 939Dual-SATA2
timer: cfq_idle_slice_timer+0x0/0xaa preempt leak: 00000102 -> 00000103
Modules linked in: sr_mod cdrom videodev media drm_kms_helper ohci_hcd ehci_hcd v4l2_compat_ioctl32 usbcore i2c_ali15x3 snd_seq drm snd_timer snd_seq
Pid: 0, comm: swapper Not tainted 3.3.0-rc2-00110-gd125666 #176
Call Trace:
 <IRQ>  [<ffffffff81022aaa>] warn_slowpath_common+0x7e/0x96
 [<ffffffff8114c485>] ? cfq_slice_expired+0x1d/0x1d
 [<ffffffff81022b56>] warn_slowpath_fmt+0x41/0x43
 [<ffffffff8114c526>] ? cfq_idle_slice_timer+0xa1/0xaa
 [<ffffffff8114c485>] ? cfq_slice_expired+0x1d/0x1d
 [<ffffffff8102c124>] run_timer_softirq+0x199/0x1ec
 [<ffffffff81047a53>] ? timekeeping_get_ns+0x12/0x31
 [<ffffffff810145fd>] ? apic_write+0x11/0x13
 [<ffffffff81027475>] __do_softirq+0x74/0xfa
 [<ffffffff812f337a>] call_softirq+0x1a/0x30
 [<ffffffff81002ff9>] do_softirq+0x31/0x68
 [<ffffffff810276cf>] irq_exit+0x3d/0xa3
 [<ffffffff81014aca>] smp_apic_timer_interrupt+0x6b/0x77
 [<ffffffff812f2de9>] apic_timer_interrupt+0x69/0x70
 <EOI>  [<ffffffff81040136>] ? sched_clock_cpu+0x73/0x7d
 [<ffffffff81040136>] ? sched_clock_cpu+0x73/0x7d
 [<ffffffff8100801f>] ? default_idle+0x1e/0x32
 [<ffffffff81008019>] ? default_idle+0x18/0x32
 [<ffffffff810008b1>] cpu_idle+0x87/0xd1
 [<ffffffff812de861>] rest_init+0x85/0x89
 [<ffffffff81659a4d>] start_kernel+0x2eb/0x2f8
 [<ffffffff8165926e>] x86_64_start_reservations+0x7e/0x82
 [<ffffffff81659362>] x86_64_start_kernel+0xf0/0xf7

this_q == locked_q is possible. There are two problems here:
1. In UP case, there is preemption counter issue as spin_trylock always
successes.
2. In SMP case, the loop breaks too earlier.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Reported-by: Meelis Roos <mroos@linux.ee>
Reported-by: Knut Petersen <Knut_Petersen@t-online.de>
Tested-by: Knut Petersen <Knut_Petersen@t-online.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-02-06 08:57:29 +01:00
Shaohua Li
05c30b9551 block: fix NULL icq_cache reference
Vivek reported a kernel crash:
[   94.217015] BUG: unable to handle kernel NULL pointer dereference at 000000000000001c
[   94.218004] IP: [<ffffffff81142fae>] kmem_cache_free+0x5e/0x200
[   94.218004] PGD 13abda067 PUD 137d52067 PMD 0
[   94.218004] Oops: 0000 [#1] SMP DEBUG_PAGEALLOC
[   94.218004] CPU 0
[   94.218004] Modules linked in: [last unloaded: scsi_wait_scan]
[   94.218004]
[   94.218004] Pid: 0, comm: swapper/0 Not tainted 3.2.0+ #16 Hewlett-Packard HP xw6600 Workstation/0A9Ch
[   94.218004] RIP: 0010:[<ffffffff81142fae>]  [<ffffffff81142fae>] kmem_cache_free+0x5e/0x200
[   94.218004] RSP: 0018:ffff88013fc03de0  EFLAGS: 00010006
[   94.218004] RAX: ffffffff81e0d020 RBX: ffff880138b3c680 RCX: 00000001801c001b
[   94.218004] RDX: 00000000003aac1d RSI: ffff880138b3c680 RDI: ffffffff81142fae
[   94.218004] RBP: ffff88013fc03e10 R08: ffff880137830238 R09: 0000000000000001
[   94.218004] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
[   94.218004] R13: ffffea0004e2cf00 R14: ffffffff812f6eb6 R15: 0000000000000246
[   94.218004] FS:  0000000000000000(0000) GS:ffff88013fc00000(0000) knlGS:0000000000000000
[   94.218004] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[   94.218004] CR2: 000000000000001c CR3: 00000001395ab000 CR4: 00000000000006f0
[   94.218004] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   94.218004] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[   94.218004] Process swapper/0 (pid: 0, threadinfo ffffffff81e00000, task ffffffff81e0d020)
[   94.218004] Stack:
[   94.218004]  0000000000000102 ffff88013fc0db20 ffffffff81e22700 ffff880139500f00
[   94.218004]  0000000000000001 000000000000000a ffff88013fc03e20 ffffffff812f6eb6
[   94.218004]  ffff88013fc03e90 ffffffff810c8da2 ffffffff81e01fd8 ffff880137830240
[   94.218004] Call Trace:
[   94.218004]  <IRQ>
[   94.218004]  [<ffffffff812f6eb6>] icq_free_icq_rcu+0x16/0x20
[   94.218004]  [<ffffffff810c8da2>] __rcu_process_callbacks+0x1c2/0x420
[   94.218004]  [<ffffffff810c9038>] rcu_process_callbacks+0x38/0x250
[   94.218004]  [<ffffffff810405ee>] __do_softirq+0xce/0x3e0
[   94.218004]  [<ffffffff8108ed04>] ? clockevents_program_event+0x74/0x100
[   94.218004]  [<ffffffff81090104>] ? tick_program_event+0x24/0x30
[   94.218004]  [<ffffffff8183ed1c>] call_softirq+0x1c/0x30
[   94.218004]  [<ffffffff8100422d>] do_softirq+0x8d/0xc0
[   94.218004]  [<ffffffff81040c3e>] irq_exit+0xae/0xe0
[   94.218004]  [<ffffffff8183f4be>] smp_apic_timer_interrupt+0x6e/0x99
[   94.218004]  [<ffffffff8183e330>] apic_timer_interrupt+0x70/0x80

Once a queue is quiesced, it's not supposed to have any elvpriv data or
icq's, and elevator switching depends on that.  Request alloc path
followed the rule for elvpriv data but forgot apply it to icq's
leading to the following crash during elevator switch. Fix it by not
allocating icq's if ELVPRIV is not set for the request.

Reported-by: Vivek Goyal <vgoyal@redhat.com>
Tested-by: Vivek Goyal <vgoyal@redhat.com>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-01-19 09:20:10 +01:00
Shaohua Li
df0793abb9 block,cfq: change code order
cfq_slice_expired will change saved_workload_slice. It should be called
first so saved_workload_slice is correctly set to 0 after workload type
is changed.
This fixes the code order changed by 54b466e44b.

Tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-01-19 09:20:09 +01:00
Linus Torvalds
90a4c0f51e uml: fix compile for x86-64
Randy Dunlap reports that we get

  arch/x86/um/shared/sysdep/ptrace.h:7:20: error: redefinition of 'regs_return_value'
  arch/x86/um/shared/sysdep/ptrace.h:7:20: note: previous definition of 'regs_return_value' was here

when compiling UML for x86-64.

Stephen Rothwell root-caused it and says:

 "Caused by commit d7e7528bcd ("Audit: push audit success and retcode
  into arch ptrace.h") (another patch that was never in linux-next :-().

  This file now needs protection against double inclusion."

so let's do as the man says.

Reported-by: Randy Dunlap <rdunlap@xenotime.net>
Analyzed-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-18 19:26:11 -08:00
Linus Torvalds
f59e842fc0 Merge branch 'for-next-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
* 'for-next-merge' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  ib_srpt: Initial SRP Target merge for v3.3-rc1
2012-01-18 16:29:42 -08:00
Linus Torvalds
4ba3069fea Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (26 commits)
  target: Set additional sense length field in sense data
  target: Remove legacy device status check from transport_execute_tasks
  target: Remove __transport_execute_tasks() for each processing context
  target: Remove extra se_device->execute_task_lock access in fast path
  target: Drop se_device TCQ queue_depth usage from I/O path
  target: Fix possible NULL pointer with __transport_execute_tasks
  target: Remove TFO->check_release_cmd() fabric API caller
  tcm_fc: Convert ft_send_work to use target_submit_cmd
  target: Add target_submit_cmd() for process context fabric submission
  target: Make target_put_sess_cmd use target_release_cmd_kref
  target: Set response format in INQUIRY response
  target: tcm_mod_builder: small fixups
  Documentation/target: Fix tcm_mod_builder.py build breakage
  target: remove overagressive ____cacheline_aligned annoations
  tcm_loop: bump max_sectors
  target/configs: remove trailing newline from udev_path and alias
  iscsi-target: fix chap identifier simple_strtoul usage
  target: remove useless casts
  target: simplify target_check_cdb_and_preempt
  target: Move core_scsi3_check_cdb_abort_and_preempt
  ...
2012-01-18 15:59:18 -08:00
Linus Torvalds
507a03c1cb Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
This includes initial support for the recently published ACPI 5.0 spec.
In particular, support for the "hardware-reduced" bit that eliminates
the dependency on legacy hardware.

APEI has patches resulting from testing on real hardware.

Plus other random fixes.

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: (52 commits)
  acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
  intel_idle: Split up and provide per CPU initialization func
  ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
  ACPI processor: Remove unneeded cpuidle_unregister_driver call
  intel idle: Make idle driver more robust
  intel_idle: Fix a cast to pointer from integer of different size warning in intel_idle
  ACPI: kernel-parameters.txt : Add intel_idle.max_cstate
  intel_idle: remove redundant local_irq_disable() call
  ACPI processor: Fix error path, also remove sysdev link
  ACPI: processor: fix acpi_get_cpuid for UP processor
  intel_idle: fix API misuse
  ACPI APEI: Convert atomicio routines
  ACPI: Export interfaces for ioremapping/iounmapping ACPI registers
  ACPI: Fix possible alignment issues with GAS 'address' references
  ACPI, ia64: Use SRAT table rev to use 8bit or 16/32bit PXM fields (ia64)
  ACPI, x86: Use SRAT table rev to use 8bit or 32bit PXM fields (x86/x86-64)
  ACPI: Store SRAT table revision
  ACPI, APEI, Resolve false conflict between ACPI NVS and APEI
  ACPI, Record ACPI NVS regions
  ACPI, APEI, EINJ, Refine the fix of resource conflict
  ...
2012-01-18 15:51:48 -08:00
Stefan Berger
be405411f7 tpm: fix (ACPI S3) suspend regression
This patch fixes an (ACPI S3) suspend regression introduced in commit
68d6e6713f ("tpm: Introduce function to poll for result of self test")
and occurring with an Infineon TPM and tpm_tis and tpm_infineon drivers
active.

The suspend problem occurred if the TPM was disabled and/or deactivated
and therefore the TPM_PCRRead checking the result of the (asynchronous)
self test returned an error code which then caused the tpm_tis driver to
become inactive and this then seemed to have negatively influenced the
suspend support by the tpm_infineon driver...  Besides that the tpm_tis
drive may stay active even if the TPM is disabled and/or deactivated.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Tested-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Rajiv Andrade <srajiv@linux.vnet.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-18 15:50:17 -08:00
Linus Torvalds
93c3d65b28 nvme: fix merge error due to change of 'make_request_fn' fn type
The type of 'make_request_fn' changed in 5a7bbad27a ("block: remove
support for bio remapping from ->make_request"), but the merge of the
nvme driver didn't take that into account, and as a result the driver
would compile with a warning:

  drivers/block/nvme.c: In function 'nvme_alloc_ns':
  drivers/block/nvme.c:1336:2: warning: passing argument 2 of 'blk_queue_make_request' from incompatible pointer type [enabled by default]
  include/linux/blkdev.h:830:13: note: expected 'void (*)(struct request_queue *, struct bio *)' but argument is of type 'int (*)(struct request_queue *, struct bio *)'

It's benign, but the warning is annoying.

Reported-by: Stephen Rothwell <sfr@canb.auug.org>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-18 15:41:27 -08:00
Stephen Rothwell
9ef9b20bd0 xen: using EXPORT_SYMBOL requires including export.h
Fix these warnings:

  drivers/xen/biomerge.c:14:1: warning: data definition has no type or storage class [enabled by default]
  drivers/xen/biomerge.c:14:1: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Wimplicit-int]
  drivers/xen/biomerge.c:14:1: warning: parameter names (without types) in function declaration [enabled by default]

And this build error:

  ERROR: "xen_biovec_phys_mergeable" [drivers/block/nvme.ko] undefined!

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-18 15:37:49 -08:00
Linus Torvalds
aa303f2c06 Merge branch 'for-linus/i2c-33' of git://git.fluff.org/bjdooks/linux
* 'for-linus/i2c-33' of git://git.fluff.org/bjdooks/linux:
  i2c-eg20t: Change-company-name-OKI-SEMICONDUCTOR to LAPIS Semiconductor
  i2c-eg20t: Support new device LAPIS Semiconductor ML7831 IOH
  i2c-eg20t: modified the setting of transfer rate.
  i2c-eg20t: use i2c_add_numbered_adapter to get a fixed bus number
  i2c: OMAP: Add DT support for i2c controller
  I2C: OMAP: NACK without STP
  I2C: OMAP: correct SYSC register offset for OMAP4
2012-01-18 13:46:13 -08:00
Linus Torvalds
4a7c1ff236 Merge branch 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
* 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (57 commits)
  [media] as3645a: Fix compilation by including slab.h
  [media] s5p-fimc: Remove linux/version.h include from fimc-mdevice.c
  [media] s5p-mfc: Remove linux/version.h include from s5p_mfc.c
  [media] ds3000: using logical && instead of bitwise &
  [media] v4l2-ctrls: make control names consistent
  [media] DVB: dib0700, add support for Nova-TD LEDs
  [media] DVB: dib0700, add corrected Nova-TD frontend_attach
  [media] DVB: dib0700, separate stk7070pd initialization
  [media] DVB: dib0700, move Nova-TD Stick to a separate set
  [media] : add MODULE_FIRMWARE to dib0700
  [media] DVB-CORE: remove superfluous DTV_CMDs
  [media] s5p-jpeg: adapt to recent videobuf2 changes
  [media] s5p-g2d: fixed a bug in controls setting function
  [media] s5p-mfc: Fix volatile controls setup
  [media] drivers/media/video/s5p-mfc/s5p_mfc.c: adjust double test
  [media] drivers/media/video/s5p-fimc/fimc-capture.c: adjust double test
  [media] s5p-fimc: Fix incorrect control ID assignment
  [media] dvb_frontend: Don't call get_frontend() if idle
  [media] DocBook/dvbproperty.xml: Remove DTV_MODULATION from ISDB-T
  [media] DocBook/dvbproperty.xml: Fix ISDB-T delivery system parameters
  ...
2012-01-18 12:53:54 -08:00
Linus Torvalds
9278e634b4 Merge branch 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
* 'fix/asoc' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ASoC: Wait for WM8993 FLL to stabilise
  ASoC: core - Free platform DAPM context at platform removal.
  ASoC: dapm - Fix check for codec context in dapm_power_widgets().
  ASoC: sgtl5000: update author email address
  ASoC: Fix DMA channel leak in imx-pcm-dma-mx2 driver.
2012-01-18 12:53:36 -08:00
Linus Torvalds
d71f5be276 SCSI updates on 20120118
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

SCSI updates on 20120118

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (49 commits)
  [SCSI] libfc: remove redundant timer init for fcp
  [SCSI] fcoe: Move fcoe_debug_logging from fcoe.h to fcoe.c
  [SCSI] libfc: Declare local functions static
  [SCSI] fcoe: fix regression on offload em matching function for initiator/target
  [SCSI] qla4xxx: Update driver version to 5.02.00-k12
  [SCSI] qla4xxx: Cleanup modinfo display
  [SCSI] qla4xxx: Update license
  [SCSI] qla4xxx: Clear the RISC interrupt bit during FW init
  [SCSI] qla4xxx: Added error logging for firmware abort
  [SCSI] qla4xxx: Disable generating pause frames in case of FW hung
  [SCSI] qla4xxx: Temperature monitoring for ISP82XX core.
  [SCSI] megaraid: fix sparse warnings
  [SCSI] sg: convert to kstrtoul_from_user()
  [SCSI] don't change sdev starvation list order without request dispatched
  [SCSI] isci: fix, prevent port from getting stuck in the 'configuring' state
  [SCSI] isci: fix start OOB
  [SCSI] isci: fix io failures while wide port links are coming up
  [SCSI] isci: allow more time for wide port targets
  [SCSI] isci: enable wide port targets
  [SCSI] isci: Fix IO fails when pull cable from phy in x4 wideport in MPC mode.
  ...
2012-01-18 12:35:17 -08:00
Linus Torvalds
92b5abbb44 Merge git://git.infradead.org/users/willy/linux-nvme
* git://git.infradead.org/users/willy/linux-nvme: (105 commits)
  NVMe: Set number of queues correctly
  NVMe: Version 0.8
  NVMe: Set queue flags correctly
  NVMe: Simplify nvme_unmap_user_pages
  NVMe: Mark the end of the sg list
  NVMe: Fix DMA mapping for admin commands
  NVMe: Rename IO_TIMEOUT to NVME_IO_TIMEOUT
  NVMe: Merge the nvme_bio and nvme_prp data structures
  NVMe: Change nvme_completion_fn to take a dev
  NVMe: Change get_nvmeq to take a dev instead of a namespace
  NVMe: Simplify completion handling
  NVMe: Update Identify Controller data structure
  NVMe: Implement doorbell stride capability
  NVMe: Version 0.7
  NVMe: Don't probe namespace 0
  Fix calculation of number of pages in a PRP List
  NVMe: Create nvme_identify and nvme_get_features functions
  NVMe: Fix memory leak in nvme_dev_add()
  NVMe: Fix calls to dma_unmap_sg
  NVMe: Correct sg list setup in nvme_map_user_pages
  ...
2012-01-18 12:34:09 -08:00
Linus Torvalds
ccb19d263f Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (47 commits)
  tg3: Fix single-vector MSI-X code
  openvswitch: Fix multipart datapath dumps.
  ipv6: fix per device IP snmp counters
  inetpeer: initialize ->redirect_genid in inet_getpeer()
  net: fix NULL-deref in WARN() in skb_gso_segment()
  net: WARN if skb_checksum_help() is called on skb requiring segmentation
  caif: Remove bad WARN_ON in caif_dev
  caif: Fix typo in Vendor/Product-ID for CAIF modems
  bnx2x: Disable AN KR work-around for BCM57810
  bnx2x: Remove AutoGrEEEn for BCM84833
  bnx2x: Remove 100Mb force speed for BCM84833
  bnx2x: Fix PFC setting on BCM57840
  bnx2x: Fix Super-Isolate mode for BCM84833
  net: fix some sparse errors
  net: kill duplicate included header
  net: sh-eth: Fix build error by the value which is not defined
  net: Use device model to get driver name in skb_gso_segment()
  bridge: BH already disabled in br_fdb_cleanup()
  net: move sock_update_memcg outside of CONFIG_INET
  mwl8k: Fixing Sparse ENDIAN CHECK warning
  ...
2012-01-17 22:26:41 -08:00
Len Brown
79ba0db69c Merge branches 'einj', 'intel_idle', 'misc', 'srat' and 'turbostat-ivb' into release 2012-01-18 01:15:54 -05:00
Tony Luck
c130bd6f82 acpi/apei/einj: Add extensions to EINJ from rev 5.0 of acpi spec
ACPI 5.0 provides extensions to the EINJ mechanism to specify the
target for the error injection - by APICID for cpu related errors,
by address for memory related errors, and by segment/bus/device/function
for PCIe related errors. Also extensions for vendor specific error
injections.

Tested-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-01-18 01:14:17 -05:00
Len Brown
cb7971756b Merge branch 'atomicio-remove' into release 2012-01-18 00:46:30 -05:00
Len Brown
037d76f404 Merge branch 'apei' into release 2012-01-18 00:18:10 -05:00
Thomas Renninger
65b7f839ce intel_idle: Split up and provide per CPU initialization func
Function split up, should have no functional change.

Provides entry point for physically hotplugged CPUs
to initialize and activate cpuidle.

Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: Deepthi Dharwar <deepthi@linux.vnet.ibm.com>
CC: Shaohua Li <shaohua.li@intel.com>
CC: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-01-17 23:59:12 -05:00
Thomas Renninger
3bd81a8710 ACPI processor: Remove unneeded variable passed by acpi_processor_hotadd_init V2
V2: Fix typo: pr->handle -> pr, here: acpi_processor_hotadd_init(pr)

This is a very small part taken from patches which afaik
are coming from Yunhong Jiang (for a Xen not a Linus repo?).

Cleanup only: no functional change.

Advantage (beside cleanup) is that other data of the pr (acpi_processor) struct
in the acpi_processor_hotadd_init() is needed later, for example a newly
introduced flag:
pr->flags.need_hotplug_init

Signed-off-by: Thomas Renninger <trenn@suse.de>
CC: Bjorn Helgaas <bhelgaas@google.com>
CC: Jiang, Yunhong <yunhong.jiang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
2012-01-17 23:58:07 -05:00
Matt Carlson
c3b5003b62 tg3: Fix single-vector MSI-X code
Kdump kernels leave MSI-X interrupts (as setup by the crashed kernel)
enabled.  However, kdump only enables one CPU in the new environment,
thus causing tg3 to abort MSI-X setup.  When the driver attempts to
enable INTA or MSI interrupt modes on a kdump kernel, interrupt
delivery fails.

This patch attempts to workaround the problem by forcing the driver
to enable a single MSI-X interrupt.  In such a configuration, the
device's multivector interrupt mode must be disabled.

Signed-off-by: Matt Carlson <mcarlson@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 23:56:19 -05:00
Ben Pfaff
77676fdbd5 openvswitch: Fix multipart datapath dumps.
The logic to split up the list of datapaths into multiple Netlink messages
was simply wrong, causing the list to be terminated after the first part.
Only about the first 50 datapaths would be dumped.  This fixes the
problem.

Reported-by: Paul Ingram <paul@nicira.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>
Signed-off-by: Jesse Gross <jesse@nicira.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 23:56:19 -05:00
Eric Dumazet
766e9f1be1 ipv6: fix per device IP snmp counters
In commit 4ce3c183fc (snmp: 64bit ipstats_mib for all arches), I forgot
to change the /proc/net/dev_snmp6/xxx output for IP counters.

percpu array is 64bit per counter but the folding still used the 'long'
variant, and output garbage on 32bit arches.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-01-17 23:56:18 -05:00
Linus Torvalds
6a488979f5 ARM: fixes for ARM platforms
Some fallout from the 3.3. merge window as well as a couple bug fixes
 for older preexisting bugs that seem valid to include at this time:
 
 * sched_clock changes broke picoxcell, fix included
 * BSYM bugs causing issues with thumb2-built kernels on SMP
 * Missing module.h include on msm.
 * A collection of bugfixes for samsung platforms that didn't make it into
   the first pull requests.
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Merge tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

ARM: fixes for ARM platforms

Some fallout from the 3.3. merge window as well as a couple bug fixes
for older preexisting bugs that seem valid to include at this time:

* sched_clock changes broke picoxcell, fix included
* BSYM bugs causing issues with thumb2-built kernels on SMP
* Missing module.h include on msm.
* A collection of bugfixes for samsung platforms that didn't make it into
  the first pull requests.

* tag 'arm-soc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: make BSYM macro assembly only
  ARM: highbank: remove incorrect BSYM usage
  ARM: imx: remove incorrect BSYM usage
  ARM: exynos: remove incorrect BSYM usage
  ARM: ux500: add missing ENDPROC to headsmp.S
  ARM: msm: Add missing ENDPROC to headsmp.S
  ARM: versatile: Add missing ENDPROC to headsmp.S
  ARM: EXYNOS: Invert VCLK polarity for framebuffer on ORIGEN
  ARM: S3C64XX: Fix interrupt configuration for PCA935x on Cragganmore
  ARM: S3C64XX: Fix the memory mapped GPIOs on Cragganmore
  ARM: S3C64XX: Remove hsmmc1 from Cragganmore
  ARM: S3C64XX: Remove unconditional power domain disables
  ARM: SAMSUNG: Declare struct platform_device in plat/s3c64xx-spi.h
  ARM: SAMSUNG: dma-ops.h needs mach/dma.h
  ARM: SAMSUNG: Guard against multiple inclusion of plat/dma.h
  ARM: picoxcell: fix sched_clock() cleanup fallout
  ARM: msm: vreg is a module and so needs module.h
2012-01-17 18:55:56 -08:00
Linus Torvalds
57f2685c16 Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma
* 'next' of git://git.infradead.org/users/vkoul/slave-dma: (53 commits)
  ARM: mach-shmobile: specify CHCLR registers on SH7372
  dma: shdma: fix runtime PM: clear channel buffers on reset
  dma/imx-sdma: save irq flags when use spin_lock in sdma_tx_submit
  dmaengine/ste_dma40: clear LNK on channel startup
  dmaengine: intel_mid_dma: remove legacy pm interface
  ASoC: mxs: correct 'direction' of device_prep_dma_cyclic
  dmaengine: intel_mid_dma: error path fix
  dmaengine: intel_mid_dma: locking and freeing fixes
  mtd: gpmi-nand: move to dma_transfer_direction
  mtd: fix compile error for gpmi-nand
  mmc: mxs-mmc: fix the dma_transfer_direction migration
  dmaengine: add DMA_TRANS_NONE to dma_transfer_direction
  dma: mxs-dma: Don't use CLKGATE bits in CTRL0 to disable DMA channels
  dma: mxs-dma: make mxs_dma_prep_slave_sg() multi user safe
  dma: mxs-dma: Always leave mxs_dma_init() with the clock disabled.
  dma: mxs-dma: fix a typo in comment
  DMA: PL330: Remove pm_runtime_xxx calls from pl330 probe/remove
  video i.MX IPU: Fix display connections
  i.MX IPU DMA: Fix wrong burstsize settings
  dmaengine/ste_dma40: allow fixed physical channel
  ...

Fix up conflicts in drivers/dma/{Kconfig,mxs-dma.c,pl330.c}

The conflicts looked pretty trivial, but I'll ask people to verify them.
2012-01-17 18:40:24 -08:00
Linus Torvalds
488a9d0182 Merge branch 'upstream-linus' of git://github.com/jgarzik/libata-dev
* 'upstream-linus' of git://github.com/jgarzik/libata-dev:
  [libata] ata_piix: Add Toshiba Satellite Pro A120 to the quirks list due to broken suspend functionality.
  [libata] add DVRTD08A and DVR-215 to NOSETXFER device quirk list
  [libata] pata_bf54x: Support sg list in bmdma transfer.
  [libata] sata_fsl: fix the controller operating mode
  [libata] enable ata port async suspend
2012-01-17 18:11:38 -08:00
Al Viro
6015ff1031 x86-32: Fix build failure with AUDIT=y, AUDITSYSCALL=n
JONGMAN HEO reports:

  With current linus git (commit a25a2b84), I got following build error,

  arch/x86/kernel/vm86_32.c: In function 'do_sys_vm86':
  arch/x86/kernel/vm86_32.c:340: error: implicit declaration of function '__audit_syscall_exit'
  make[3]: *** [arch/x86/kernel/vm86_32.o] Error 1

OK, I can reproduce it (32bit allmodconfig with AUDIT=y, AUDITSYSCALL=n)

It's due to commit d7e7528bcd: "Audit: push audit success and retcode
into arch ptrace.h".

Reported-by: JONGMAN HEO <jongman.heo@samsung.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-01-17 18:10:11 -08:00
Benjamin Larsson
b73fa4630e [libata] ata_piix: Add Toshiba Satellite Pro A120 to the quirks list
due to broken suspend functionality.

Signed-off-by: Benjamin Larsson <benjamin@southpole.se>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:50:53 -05:00
Vladimir LAVALLADE
3a25179e06 [libata] add DVRTD08A and DVR-215 to NOSETXFER device quirk list
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:50:07 -05:00
Sonic Zhang
81b0287d34 [libata] pata_bf54x: Support sg list in bmdma transfer.
BF54x on-chip ATAPI controller allows maximum 0x1fffe bytes to be transfered
in one ATAPI transfer. So, set the max sg_tablesize to 4.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:49:28 -05:00
Jerry Huang
93272b132a [libata] sata_fsl: fix the controller operating mode
Configure the FSL SATA controller to the preferred, enterprise mode.

Signed-off-by: Yutaka Ando <r46913@freescale.com>
Signed-off-by: Jerry Huang <Chang-Ming.Huang@freescale.com>
CC: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:49:07 -05:00
Lin Ming
966f1212e1 [libata] enable ata port async suspend
This saves devices suspend/resume time.

Tested system suspend/resume with SATA IDE/AHCI mode 3 times.
Below is the time took for devices suspend/resume.

SATA mode    vanilla-kernel           patched-kernel
---------    ---------------------    ---------------------
IDE          suspend: 0.744           suspend: 0.432
             (0.716, 0.768, 0.748)    (0.440, 0.428, 0.428)

             resume: 5.084            resume: 2.209
             (5.100, 5.064, 5.088)    (2.168, 2.232, 2.228)

AHCI:        suspend: 0.725           suspend: 0.449
             (0.740, 0.708, 0.728)    (0.456, 0.448, 0.444)

             resume: 2.556            resume: 1.896
             (2.604, 2.492, 2.572)    (1.932, 1.872, 1.884)

Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-01-17 20:48:06 -05:00
Laurent Pinchart
36be126cb0 [media] as3645a: Fix compilation by including slab.h
The as3645a driver calls kzalloc(). Include slab.h.

Reported-by: Fredrik Lingvall <fredrik.lingvall@gmail.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:07:13 -02:00
Sachin Kamat
a2e2baad60 [media] s5p-fimc: Remove linux/version.h include from fimc-mdevice.c
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:06:24 -02:00
Sachin Kamat
2bd4334121 [media] s5p-mfc: Remove linux/version.h include from s5p_mfc.c
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:06:13 -02:00
Dan Carpenter
3a9888f913 [media] ds3000: using logical && instead of bitwise &
The intent here was to test if the FE_HAS_LOCK was set.  The current
test is equivalent to "if (status) { ..."

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:05:13 -02:00
Hans Verkuil
f08aacf84f [media] v4l2-ctrls: make control names consistent
Several control names used inconsistent capitalization or were inconsistent
in other ways. I also corrected a spelling mistake and fixed four strings
that were too long (>31 characters). Harmless, but the string is cut off when
it is returned with QUERYCTRL.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:04:05 -02:00
Jiri Slaby
d43272a4e8 [media] DVB: dib0700, add support for Nova-TD LEDs
Add an override of read_status to intercept lock status. This allows
us to switch LEDs appropriately on and off with signal un/locked.

The second phase is to override sleep to properly turn off both.

This is a hackish way to achieve that.

Thanks to Mike Krufky for his help.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:02:41 -02:00
Jiri Slaby
2b05b881ec [media] DVB: dib0700, add corrected Nova-TD frontend_attach
This means cut & paste from the former f. attach. But while at it write
to the right GPIO to turn on the right LED. Also turn the other two
off jsut for sure.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:02:15 -02:00
Jiri Slaby
52fd5b2ea7 [media] DVB: dib0700, separate stk7070pd initialization
The start is common for both stk7070pd and novatd specific routine.
This is just a preparation for the next patch.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:01:55 -02:00
Jiri Slaby
9b6ba57bd4 [media] DVB: dib0700, move Nova-TD Stick to a separate set
To properly support the three LEDs which are on the stick, we need
a special handling in the ->frontend_attach function. Thus let's have
a separate ->frontend_attach instead of ifs in the common one.

The hadnling itself will be added in further patches.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Acked-by: Michael Krufky <mkrufky@linuxtv.org>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 23:01:23 -02:00
Patrick Boettcher
68dc8bc580 [media] : add MODULE_FIRMWARE to dib0700
The dib0700 needs a binary firmware file. This patch added the MODULE_FIRMWARE-macro.

Signed-off-by: Christoph Anton Mitterer <calestyo@scientia.net>
Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:58:53 -02:00
Patrick Boettcher
bad321f1bb [media] DVB-CORE: remove superfluous DTV_CMDs
This small patch removes superfluous DTV_CMDs from dvb_frontend.c which were added in the initially when ISBD-T support was added.
They were there unnoticed even though compilers should have warning about those duplicates. Finally they did and now we can remove them.

Thanks to Dan Carpenter <dan.carpenter@oracle.com> for pointing that out.

Signed-off-by: Patrick Boettcher <pboettcher@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:58:40 -02:00
Marek Szyprowski
719c174ee9 [media] s5p-jpeg: adapt to recent videobuf2 changes
queue_setup callback has been extended with struct v4l2_format *fmt
parameter in 2d86401c2c commit. This patch adds this parameter to
s5p-jpeg driver.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:54:45 -02:00
Kamil Debski
7f6cce69e2 [media] s5p-g2d: fixed a bug in controls setting function
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:54:23 -02:00
Kamil Debski
0da0a78338 [media] s5p-mfc: Fix volatile controls setup
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-01-17 22:54:04 -02:00