Commit Graph

36260 Commits

Author SHA1 Message Date
Tomasz Figa
da1b6c05b8 dmaengine: PL08x: Add support for PL080S variant
PL080S is a modified version of PL080 that can be found on Samsung SoCs,
such as S3C6400 and S3C6410.

It has different offset of CONFIG register, separate CONTROL1 register
that holds transfer size and larger maximum transfer size.

Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-09-02 11:49:56 +05:30
Shawn Guo
b1baec525e dma: mxs-dma: remove code left from generic DMA binding conversion
With all mxs-dma clients moved to use generic DMA helper, the code
left from generic DMA binding conversion can be removed now.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-19 14:20:21 +05:30
Daniel Mack
13b3006b8e dma: mmp_pdma: add filter function
PXA peripherals need to obtain specific DMA request ids which will
eventually be stored in the DRCMR register.

Currently, clients are expected to store that number inside the slave
config block as slave_id, which is unfortunately incompatible with the
way DMA resources are handled in DT environments.

This patch adds a filter function which stores the filter parameter
passed in by of-dma.c into the channel's drcmr register.

For backward compatability, cfg->slave_id is still used if set to
a non-zero value.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-14 13:55:15 +05:30
Zhangfei Gao
7bb587f4ee dmaengine: add interface of dma_get_slave_channel
Suggested by Arnd, add dma_get_slave_channel interface
Dma host driver could get specific channel specificied by request line, rather than filter.

host example:
static struct dma_chan *xx_of_dma_simple_xlate(struct of_phandle_args *dma_spec,
		struct of_dma *ofdma)
{
	struct xx_dma_dev *d = ofdma->of_dma_data;
	unsigned int request = dma_spec->args[0];

	if (request > d->dma_requests)
		return NULL;

	return dma_get_slave_channel(&(d->chans[request].vc.chan));
}

probe:
of_dma_controller_register((&op->dev)->of_node, xx_of_dma_simple_xlate, d);

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2013-08-13 16:32:59 +05:30
Linus Torvalds
72a67a94bc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Don't ignore user initiated wireless regulatory settings on cards
    with custom regulatory domains, from Arik Nemtsov.

 2) Fix length check of bluetooth information responses, from Jaganath
    Kanakkassery.

 3) Fix misuse of PTR_ERR in btusb, from Adam Lee.

 4) Handle rfkill properly while iwlwifi devices are offline, from
    Emmanuel Grumbach.

 5) Fix r815x devices DMA'ing to stack buffers, from Hayes Wang.

 6) Kernel info leak in ATM packet scheduler, from Dan Carpenter.

 7) 8139cp doesn't check for DMA mapping errors, from Neil Horman.

 8) Fix bridge multicast code to not snoop when no querier exists,
    otherwise mutlicast traffic is lost.  From Linus Lüssing.

 9) Avoid soft lockups in fib6_run_gc(), from Michal Kubecek.

10) Fix races in automatic address asignment on ipv6, which can result
    in incorrect lifetime assignments.  From Jiri Benc.

11) Cure build bustage when CONFIG_NET_LL_RX_POLL is not set and rename
    it CONFIG_NET_RX_BUSY_POLL to eliminate the last reference to the
    original naming of this feature.  From Cong Wang.

12) Fix crash in TIPC when server socket creation fails, from Ying Xue.

13) macvlan_changelink() silently succeeds when it shouldn't, from
    Michael S Tsirkin.

14) HTB packet scheduler can crash due to sign extension, fix from
    Stephen Hemminger.

15) With the cable unplugged, r8169 prints out a message every 10
    seconds, make it netif_dbg() instead of netif_warn().  From Peter
    Wu.

16) Fix memory leak in rtm_to_ifaddr(), from Daniel Borkmann.

17) sis900 gets spurious TX queue timeouts due to mismanagement of link
    carrier state, from Denis Kirjanov.

18) Validate somaxconn sysctl to make sure it fits inside of a u16.
    From Roman Gushchin.

19) Fix MAC address filtering on qlcnic, from Shahed Shaikh.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (68 commits)
  qlcnic: Fix for flash update failure on 83xx adapter
  qlcnic: Fix link speed and duplex display for 83xx adapter
  qlcnic: Fix link speed display for 82xx adapter
  qlcnic: Fix external loopback test.
  qlcnic: Removed adapter series name from warning messages.
  qlcnic: Free up memory in error path.
  qlcnic: Fix ingress MAC learning
  qlcnic: Fix MAC address filter issue on 82xx adapter
  net: ethernet: davinci_emac: drop IRQF_DISABLED
  netlabel: use domain based selectors when address based selectors are not available
  net: check net.core.somaxconn sysctl values
  sis900: Fix the tx queue timeout issue
  net: rtm_to_ifaddr: free ifa if ifa_cacheinfo processing fails
  r8169: remove "PHY reset until link up" log spam
  net: ethernet: cpsw: drop IRQF_DISABLED
  htb: fix sign extension bug
  macvlan: handle set_promiscuity failures
  macvlan: better mode validation
  tipc: fix oops when creating server socket fails
  net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL
  ...
2013-08-03 15:00:23 -07:00
Linus Torvalds
abe0308070 InfiniBand/RDMA fixes for 3.11-rc:
- Fixes for the newly merged mlx5 hardware driver
  - Stack info leak fixes from Dan Carpenter
  - Fixes for pkey table handling with SR-IOV
  - A few other small things
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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband/rdma fixes from Roland Dreier:
 - Fixes for the newly merged mlx5 hardware driver
 - Stack info leak fixes from Dan Carpenter
 - Fixes for pkey table handling with SR-IOV
 - A few other small things

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IPoIB: Fix pkey change flow for virtualization environments
  IPoIB: Make sure child devices use valid/proper pkeys
  IB/core: Create QP1 using the pkey index which contains the default pkey
  mlx5_core: Variable may be used uninitialized
  mlx5_core: Implement new initialization sequence
  mlx5_core: Fix use after free in mlx5_cmd_comp_handler()
  IB/mlx5: Fix stack info leak in mlx5_ib_alloc_ucontext()
  IB/mlx5: Fix error return code in init_one()
  IB/mlx4: Use default pkey when creating tunnel QPs
  RDMA/cma: Only call cma_save_ib_info() for CM REQs
  RDMA/cma: Fix accessing invalid private data for UD
  RDMA/cma: Fix gcc warning
  Revert "RDMA/nes: Fix compilation error when nes_debug is enabled"
  IB/qib: Add err_decode() call for ring dump
  RDMA/cxgb3: Fix stack info leak in iwch_create_cq()
  RDMA/nes: Fix info leaks in nes_create_qp() and nes_create_cq()
  RDMA/ocrdma: Fix several stack info leaks
  RDMA/cxgb4: Fix stack info leak in c4iw_create_qp()
  RDMA/ocrdma: Remove unused include
2013-08-02 14:58:30 -07:00
Linus Torvalds
1fe0135b9e ACPI and power management fixes for 3.11-rc4
- Revert two cpuidle commits added during the 3.8 development cycle that
   turn out to have introduced a significant performance regression as
   requested by Jeremy Eder.
 
 - The recent patches that made the freezer less heavy-weight introduced
   a regression causing user-space-driven hibernation using the ioctl()
   interface to block indefinitely when the hibernate process executes
   try_to_freeze().  Fix from Colin Cross addresses this by adding a
   process flag to mark the hibernate/suspend process to inform the
   freezer that that process should be ignored.
 
 - One of the recent cpufreq reverts uncovered a problem in the core
   causing the cpufreq driver module refcount to become negative after
   a system suspend-resume cycle.  Fix from Rafael J Wysocki.
 
 - The evaluation of the ACPI battery _BIX method has never worked
   correctly, because the commit that added support for it forgot to
   take the "Revision" field in the return package into account.  As
   a result, the reading of battery info doesn't work at all on some
   systems, which is addressed by a fix from Lan Tianyu.
 
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Merge tag 'pm+acpi-3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:

 - Revert two cpuidle commits added during the 3.8 development cycle
   that turn out to have introduced a significant performance regression
   as requested by Jeremy Eder.

 - The recent patches that made the freezer less heavy-weight introduced
   a regression causing user-space-driven hibernation using the ioctl()
   interface to block indefinitely when the hibernate process executes
   try_to_freeze().  Fix from Colin Cross addresses this by adding a
   process flag to mark the hibernate/suspend process to inform the
   freezer that that process should be ignored.

 - One of the recent cpufreq reverts uncovered a problem in the core
   causing the cpufreq driver module refcount to become negative after a
   system suspend-resume cycle.  Fix from Rafael J Wysocki.

 - The evaluation of the ACPI battery _BIX method has never worked
   correctly, because the commit that added support for it forgot to
   take the "Revision" field in the return package into account.  As a
   result, the reading of battery info doesn't work at all on some
   systems, which is addressed by a fix from Lan Tianyu.

* tag 'pm+acpi-3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  freezer: set PF_SUSPEND_TASK flag on tasks that call freeze_processes
  ACPI / battery: Fix parsing _BIX return value
  cpufreq: Fix cpufreq driver module refcount balance after suspend/resume
  Revert "cpuidle: Quickly notice prediction failure for repeat mode"
  Revert "cpuidle: Quickly notice prediction failure in general case"
2013-08-02 12:21:32 -07:00
Cong Wang
e0d1095ae3 net: rename CONFIG_NET_LL_RX_POLL to CONFIG_NET_RX_BUSY_POLL
Eliezer renames several *ll_poll to *busy_poll, but forgets
CONFIG_NET_LL_RX_POLL, so in case of confusion, rename it too.

Cc: Eliezer Tamir <eliezer.tamir@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <amwang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-08-01 15:11:17 -07:00
Linus Torvalds
19788a9008 Merge branch 'akpm' (patches from Andrew Morton)
Merge more patches from Andrew Morton:
 "A bunch of fixes.

  Plus Joe's printk move and rework.  It's not a -rc3 thing but now
  would be a nice time to offload it, while things are quiet.  I've been
  sitting on it all for a couple of weeks, no issues"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
  vmpressure: make sure there are no events queued after memcg is offlined
  vmpressure: do not check for pending work to prevent from new work
  vmpressure: change vmpressure::sr_lock to spinlock
  printk: rename struct log to struct printk_log
  printk: use pointer for console_cmdline indexing
  printk: move braille console support into separate braille.[ch] files
  printk: add console_cmdline.h
  printk: move to separate directory for easier modification
  drivers/rtc/rtc-twl.c: fix: rtcX/wakealarm attribute isn't created
  mm: zbud: fix condition check on allocation size
  thp, mm: avoid PageUnevictable on active/inactive lru lists
  mm/swap.c: clear PageActive before adding pages onto unevictable list
  arch/x86/platform/ce4100/ce4100.c: include reboot.h
  mm: sched: numa: fix NUMA balancing when !SCHED_DEBUG
  rapidio: fix use after free in rio_unregister_scan()
  .gitignore: ignore *.lz4 files
  MAINTAINERS: dynamic debug: Jason's not there...
  dmi_scan: add comments on dmi_present() and the loop in dmi_scan_machine()
  ocfs2/refcounttree: add the missing NULL check of the return value of find_or_create_page()
  mm: mempolicy: fix mbind_range() && vma_adjust() interaction
2013-07-31 17:52:04 -07:00
Michal Hocko
33cb876e94 vmpressure: make sure there are no events queued after memcg is offlined
vmpressure is called synchronously from reclaim where the target_memcg
is guaranteed to be alive but the eventfd is signaled from the work
queue context.  This means that memcg (along with vmpressure structure
which is embedded into it) might go away while the work item is pending
which would result in use-after-release bug.

We have two possible ways how to fix this.  Either vmpressure pins memcg
before it schedules vmpr->work and unpin it in vmpressure_work_fn or
explicitely flush the work item from the css_offline context (as
suggested by Tejun).

This patch implements the later one and it introduces vmpressure_cleanup
which flushes the vmpressure work queue item item.  It hooks into
mem_cgroup_css_offline after the memcg itself is cleaned up.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Tejun Heo <tj@kernel.org>
Cc: Anton Vorontsov <anton.vorontsov@linaro.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Li Zefan <lizefan@huawei.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-31 14:41:04 -07:00
Michal Hocko
22f2020f84 vmpressure: change vmpressure::sr_lock to spinlock
There is nothing that can sleep inside critical sections protected by
this lock and those sections are really small so there doesn't make much
sense to use mutex for them.  Change the log to a spinlock

Signed-off-by: Michal Hocko <mhocko@suse.cz>
Reported-by: Tejun Heo <tj@kernel.org>
Cc: Anton Vorontsov <anton.vorontsov@linaro.org>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Li Zefan <lizefan@huawei.com>
Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-31 14:41:03 -07:00
Eli Cohen
cd23b14b65 mlx5_core: Implement new initialization sequence
Introduce enbale_hca and disable_hca commands to signify when the
driver starts or ceases to operate on the device.

In addition the driver will use boot and init pages count; boot pages
is required to allow firmware to complete boot commands and the other
to complete init hca.  Command interface revision is bumped to 4 to
enforce using supported firmware.

This patch breaks compatibility with old versions of firmware (< 4);
however, the first GA firmware we will publish will support version 4
so this should not be a problem.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2013-07-31 14:12:24 -07:00
Linus Torvalds
06693f305e Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:

 1) Fix association failures not triggering a connect-failure event in
    cfg80211, from Johannes Berg.

 2) Eliminate a potential NULL deref with older iptables tools when
    configuring xt_socket rules, from Eric Dumazet.

 3) Missing RTNL locking in wireless regulatory code, from Johannes
    Berg.

 4) Fix OOPS caused by firmware loading races in ath9k_htc, from Alexey
    Khoroshilov.

 5) Fix usb URB leak in usb_8dev CAN driver, also from Alexey
    Khoroshilov.

 6) VXLAN namespace teardown fails to unregister devices, from Stephen
    Hemminger.

 7) Fix multicast settings getting dropped by firmware in qlcnic driver,
    from Sucheta Chakraborty.

 8) Add sysctl range enforcement for tcp_syn_retries, from Michal Tesar.

 9) Fix a nasty bug in bridging where an active timer would get
    reinitialized with a setup_timer() call.  From Eric Dumazet.

10) Fix use after free in new mlx5 driver, from Dan Carpenter.

11) Fix freed pointer reference in ipv6 multicast routing on namespace
    cleanup, from Hannes Frederic Sowa.

12) Some usbnet drivers report TSO and SG in their feature set, but the
    usbnet layer doesn't really support them.  From Eric Dumazet.

13) Fix crash on EEH errors in tg3 driver, from Gavin Shan.

14) Drop cb_lock when requesting modules in genetlink, from Stanislaw
    Gruszka.

15) Kernel stack leaks in cbq scheduler and af_key pfkey messages, from
    Dan Carpenter.

16) FEC driver erroneously signals NETDEV_TX_BUSY on transmit leading to
    endless loops, from Uwe Kleine-König.

17) Fix hangs from loading mvneta driver, from Arnaud Patard.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (84 commits)
  mlx5: fix error return code in mlx5_alloc_uuars()
  mvneta: Try to fix mvneta when compiled as module
  mvneta: Fix hang when loading the mvneta driver
  atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring
  genetlink: fix usage of NLM_F_EXCL or NLM_F_REPLACE
  af_key: more info leaks in pfkey messages
  net/fec: Don't let ndo_start_xmit return NETDEV_TX_BUSY without link
  net_sched: Fix stack info leak in cbq_dump_wrr().
  igb: fix vlan filtering in promisc mode when not in VT mode
  ixgbe: Fix Tx Hang issue with lldpad on 82598EB
  genetlink: release cb_lock before requesting additional module
  net: fec: workaround stop tx during errata ERR006358
  qlcnic: Fix diagnostic interrupt test for 83xx adapters.
  qlcnic: Fix setting Guest VLAN
  qlcnic: Fix operation type and command type.
  qlcnic: Fix initialization of work function.
  Revert "atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring"
  atl1c: Fix misuse of netdev_alloc_skb in refilling rx ring
  net/tg3: Fix warning from pci_disable_device()
  net/tg3: Fix kernel crash
  ...
2013-07-31 12:56:18 -07:00
Colin Cross
2b44c4db2e freezer: set PF_SUSPEND_TASK flag on tasks that call freeze_processes
Calling freeze_processes sets a global flag that will cause any
process that calls try_to_freeze to enter the refrigerator.  It
skips sending a signal to the current task, but if the current
task ever hits try_to_freeze, all threads will be frozen and the
system will deadlock.

Set a new flag, PF_SUSPEND_TASK, on the task that calls
freeze_processes.  The flag notifies the freezer that the thread
is involved in suspend and should not be frozen.  Also add a
WARN_ON in thaw_processes if the caller does not have the
PF_SUSPEND_TASK flag set to catch if a different task calls
thaw_processes than the one that called freeze_processes, leaving
a task with PF_SUSPEND_TASK permanently set on it.

Threads that spawn off a task with PF_SUSPEND_TASK set (which
swsusp does) will also have PF_SUSPEND_TASK set, preventing them
from freezing while they are helping with suspend, but they need
to be dead by the time suspend is triggered, otherwise they may
run when userspace is expected to be frozen.  Add a WARN_ON in
thaw_processes if more than one thread has the PF_SUSPEND_TASK
flag set.

Reported-and-tested-by: Michael Leun <lkml20130126@newton.leun.net>
Signed-off-by: Colin Cross <ccross@android.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-30 14:05:06 +02:00
Linus Torvalds
36f571e9ed This fixes corrupted video capture, seen with IIDC/DCAM video and certain
buffer settings.  (Regression since v3.4 inclusive.)
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Merge tag 'firewire-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394

Pull firewire regression fix from Stefan Richter:
 "This fixes corrupted video capture, seen with IIDC/DCAM video and
  certain buffer settings.  (Regression since v3.4 inclusive.)"

* tag 'firewire-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394:
  firewire: fix libdc1394/FlyCap2 iso event regression
2013-07-29 17:08:22 -07:00
Rafael J. Wysocki
148519120c Revert "cpuidle: Quickly notice prediction failure for repeat mode"
Revert commit 69a37bea (cpuidle: Quickly notice prediction failure for
repeat mode), because it has been identified as the source of a
significant performance regression in v3.8 and later as explained by
Jeremy Eder:

  We believe we've identified a particular commit to the cpuidle code
  that seems to be impacting performance of variety of workloads.
  The simplest way to reproduce is using netperf TCP_RR test, so
  we're using that, on a pair of Sandy Bridge based servers.  We also
  have data from a large database setup where performance is also
  measurably/positively impacted, though that test data isn't easily
  share-able.

  Included below are test results from 3 test kernels:

  kernel       reverts
  -----------------------------------------------------------
  1) vanilla   upstream (no reverts)

  2) perfteam2 reverts e11538d1f0

  3) test      reverts 69a37beabf
                       e11538d1f0

  In summary, netperf TCP_RR numbers improve by approximately 4%
  after reverting 69a37beabf.  When
  69a37beabf is included, C0 residency
  never seems to get above 40%.  Taking that patch out gets C0 near
  100% quite often, and performance increases.

  The below data are histograms representing the %c0 residency @
  1-second sample rates (using turbostat), while under netperf test.

  - If you look at the first 4 histograms, you can see %c0 residency
    almost entirely in the 30,40% bin.
  - The last pair, which reverts 69a37beabf,
    shows %c0 in the 80,90,100% bins.

  Below each kernel name are netperf TCP_RR trans/s numbers for the
  particular kernel that can be disclosed publicly, comparing the 3
  test kernels.  We ran a 4th test with the vanilla kernel where
  we've also set /dev/cpu_dma_latency=0 to show overall impact
  boosting single-threaded TCP_RR performance over 11% above
  baseline.

  3.10-rc2 vanilla RX + c0 lock (/dev/cpu_dma_latency=0):
  TCP_RR trans/s 54323.78

  -----------------------------------------------------------
  3.10-rc2 vanilla RX (no reverts)
  TCP_RR trans/s 48192.47

  Receiver %c0
      0.0000 -    10.0000 [     1]: *
     10.0000 -    20.0000 [     0]:
     20.0000 -    30.0000 [     0]:
     30.0000 -    40.0000 [    59]:
  ***********************************************************
     40.0000 -    50.0000 [     1]: *
     50.0000 -    60.0000 [     0]:
     60.0000 -    70.0000 [     0]:
     70.0000 -    80.0000 [     0]:
     80.0000 -    90.0000 [     0]:
     90.0000 -   100.0000 [     0]:

  Sender %c0
      0.0000 -    10.0000 [     1]: *
     10.0000 -    20.0000 [     0]:
     20.0000 -    30.0000 [     0]:
     30.0000 -    40.0000 [    11]: ***********
     40.0000 -    50.0000 [    49]:
  *************************************************
     50.0000 -    60.0000 [     0]:
     60.0000 -    70.0000 [     0]:
     70.0000 -    80.0000 [     0]:
     80.0000 -    90.0000 [     0]:
     90.0000 -   100.0000 [     0]:

  -----------------------------------------------------------
  3.10-rc2 perfteam2 RX (reverts commit
  e11538d1f0)
  TCP_RR trans/s 49698.69

  Receiver %c0
      0.0000 -    10.0000 [     1]: *
     10.0000 -    20.0000 [     1]: *
     20.0000 -    30.0000 [     0]:
     30.0000 -    40.0000 [    59]:
  ***********************************************************
     40.0000 -    50.0000 [     0]:
     50.0000 -    60.0000 [     0]:
     60.0000 -    70.0000 [     0]:
     70.0000 -    80.0000 [     0]:
     80.0000 -    90.0000 [     0]:
     90.0000 -   100.0000 [     0]:

  Sender %c0
      0.0000 -    10.0000 [     1]: *
     10.0000 -    20.0000 [     0]:
     20.0000 -    30.0000 [     0]:
     30.0000 -    40.0000 [     2]: **
     40.0000 -    50.0000 [    58]:
  **********************************************************
     50.0000 -    60.0000 [     0]:
     60.0000 -    70.0000 [     0]:
     70.0000 -    80.0000 [     0]:
     80.0000 -    90.0000 [     0]:
     90.0000 -   100.0000 [     0]:

  -----------------------------------------------------------
  3.10-rc2 test RX (reverts 69a37beabf
  and e11538d1f0)
  TCP_RR trans/s 47766.95

  Receiver %c0
      0.0000 -    10.0000 [     1]: *
     10.0000 -    20.0000 [     1]: *
     20.0000 -    30.0000 [     0]:
     30.0000 -    40.0000 [    27]: ***************************
     40.0000 -    50.0000 [     2]: **
     50.0000 -    60.0000 [     0]:
     60.0000 -    70.0000 [     2]: **
     70.0000 -    80.0000 [     0]:
     80.0000 -    90.0000 [     0]:
     90.0000 -   100.0000 [    28]: ****************************

  Sender:
      0.0000 -    10.0000 [     1]: *
     10.0000 -    20.0000 [     0]:
     20.0000 -    30.0000 [     0]:
     30.0000 -    40.0000 [    11]: ***********
     40.0000 -    50.0000 [     0]:
     50.0000 -    60.0000 [     1]: *
     60.0000 -    70.0000 [     0]:
     70.0000 -    80.0000 [     3]: ***
     80.0000 -    90.0000 [     7]: *******
     90.0000 -   100.0000 [    38]: **************************************

  These results demonstrate gaining back the tendency of the CPU to
  stay in more responsive, performant C-states (and thus yield
  measurably better performance), by reverting commit
  69a37beabf.

Requested-by: Jeremy Eder <jeder@redhat.com>
Tested-by: Len Brown <len.brown@intel.com>
Cc: 3.8+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-29 13:32:29 +02:00
Clemens Ladisch
0699a73af3 firewire: fix libdc1394/FlyCap2 iso event regression
Commit 18d627113b (firewire: prevent dropping of completed iso packet
header data) was intended to be an obvious bug fix, but libdc1394 and
FlyCap2 depend on the old behaviour by ignoring all returned information
and thus not noticing that not all packets have been received yet.  The
result was that the video frame buffers would be saved before they
contained the correct data.

Reintroduce the old behaviour for old clients.

Tested-by: Stepan Salenikovich <stepan.salenikovich@gmail.com>
Tested-by: Josep Bosch <jep250@gmail.com>
Cc: <stable@vger.kernel.org> # 3.4+
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2013-07-27 20:24:36 +02:00
Linus Torvalds
0f74665025 ACPI and power management fixes for 3.11-rc3
- Revert of the ACPI video commit that I hoped would help fix
   backlight problems related to Windows 8 compatibility on some
   systems.  Unfortunately, it turned out to cause problems to happen
   too.
 
 - Fix for two problems in intel_pstate, a possible failure to respond
   to a load change on a quiet system and a possible failure to select
   the highest available P-state on some systems.  From Dirk Brandewie.
 
 /
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Merge tag 'pm+acpi-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI and power management fixes from Rafael Wysocki:
 "These are just two fixes, a revert of the would-be backlight fix that
  didn't work and an intel_pstate fix for two problems related to
  maximum P-state selection.

  Specifics:

   - Revert of the ACPI video commit that I hoped would help fix
     backlight problems related to Windows 8 compatibility on some
     systems.  Unfortunately, it turned out to cause problems to happen
     too.

   - Fix for two problems in intel_pstate, a possible failure to respond
     to a load change on a quiet system and a possible failure to select
     the highest available P-state on some systems.  From Dirk
     Brandewie"

* tag 'pm+acpi-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  Revert "ACPI / video / i915: No ACPI backlight if firmware expects Windows 8"
  cpufreq / intel_pstate: Change to scale off of max P-state
2013-07-26 14:37:18 -07:00
Linus Torvalds
fef36a7a31 ARM: SoC fixes for 3.11-rc
This is a largeish batch of fixes, mostly because I missed -rc2 due to
 travel/vacation. So in number these are a bit more than ideal unless
 you amortize them over two -rcs.
 
 Quick breakdown:
  - Defconfig updates
    - Making multi_v7_defconfig useful on more hardware to encourage
      single-image usage
    - Davinci and nomadik updates due to new code merged this merge window
  - Fixes for UART on Samsung platforms, both PM and clock-related
  - A handful of warning fixes from defconfig builds, including for
    max8925 backlight and pxamci (both with appropriate acks)
  - Exynos5440 fixes for LPAE configuration, PM
  - ...plus a bunch of other smaller changes all over the place
 
 I expect to switch to regressions-or-severe-bugs-only fixes from here
 on out.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "This is a largeish batch of fixes, mostly because I missed -rc2 due to
  travel/vacation.  So in number these are a bit more than ideal unless
  you amortize them over two -rcs.

  Quick breakdown:
   - Defconfig updates
     - Making multi_v7_defconfig useful on more hardware to encourage
       single-image usage
     - Davinci and nomadik updates due to new code merged this merge
       window
   - Fixes for UART on Samsung platforms, both PM and clock-related
   - A handful of warning fixes from defconfig builds, including for
     max8925 backlight and pxamci (both with appropriate acks)
   - Exynos5440 fixes for LPAE configuration, PM
   - ...plus a bunch of other smaller changes all over the place

  I expect to switch to regressions-or-severe-bugs-only fixes from here
  on out"

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (37 commits)
  mfd: max8925: fix dt code for backlight
  ARM: omap5: Only select errata 798181 if SMP
  ARM: EXYNOS: Update CONFIG_ARCH_NR_GPIO for Exynos
  ARM: EXYNOS: Fix low level debug support
  ARM: SAMSUNG: Save/restore only selected uart's registers
  ARM: SAMSUNG: Add SAMSUNG_PM config option to select pm
  ARM: S3C24XX: Add missing clkdev entries for s3c2440 UART
  ARM: multi_v7_defconfig: Select USB chipidea driver
  ARM: pxa: propagate errors from regulator_enable() to pxamci
  ARM: zynq: fix compilation warning
  ARM: keystone: fix compilation warning
  ARM: highbank: Only touch common coherency control register fields
  ARM: footbridge: fix overlapping PCI mappings
  dmaengine: shdma: fix a build failure on platforms with no DMA support
  ARM: STi: Set correct ARM ERRATAs.
  ARM: dts: STi: Fix pinconf setup for STiH416 serial2
  ARM: nomadik: configure for NO_HZ and HRTIMERS
  ARM: nomadik: update defconfig base
  ARM: nomadik: Update MMC defconfigs
  ARM: davinci: defconfig: enable EDMA driver
  ...
2013-07-26 12:42:40 -07:00
Linus Torvalds
db8cbfadcf USB fixes for 3.11-rc3
Here are a number of USB fixes for 3.11-rc3.
 
 Lots of little things, nothing major.  A number of new device ids, build
 fixes for DMA, and a bunch of other minor things.  All of these have
 been in the linux-next tree.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'usb-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

Pull USB fixes from Greg KH:
 "Here are a number of USB fixes for 3.11-rc3.

  Lots of little things, nothing major.  A number of new device ids,
  build fixes for DMA, and a bunch of other minor things.  All of these
  have been in the linux-next tree"

* tag 'usb-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (40 commits)
  usb: Clear both buffers when clearing a control transfer TT buffer.
  usb/gadget: free opts struct on error recovery
  USB: mos7840: fix memory leak in open
  usb: serial: option.c: remove ONDA MT825UP product ID fromdriver
  usb: serial: option: add Olivetti Olicard 200
  usb: serial: option: blacklist ONDA MT689DC QMI interface
  xhci: fix null pointer dereference on ring_doorbell_for_active_rings
  usb: host: xhci: Enable XHCI_SPURIOUS_SUCCESS for all controllers with xhci 1.0
  usb: fix build warning in pci-quirks.h when CONFIG_PCI is not enabled
  usb: xhci: Mark two functions __maybe_unused
  xhci: Avoid NULL pointer deref when host dies.
  usb: serial: option: Add ONYX 3G device support
  USB: ti_usb_3410_5052: fix dynamic-id matching
  usb: option: add TP-LINK MA260
  USB: option: add D-Link DWM-152/C1 and DWM-156/C1
  USB: EHCI: Fix resume signalling on remote wakeup
  USB: cp210x: add MMB and PI ZigBee USB Device Support
  usb: cp210x support SEL C662 Vendor/Device
  USB: option: append Petatel NP10T device to GSM modems list
  USB: misc: Add Manhattan Hi-Speed USB DVI Converter to sisusbvga
  ...
2013-07-26 11:38:13 -07:00
Linus Torvalds
c7dad2343f Merge branch 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata fixes from Tejun Heo:
 "Assorted libata updates.

  The most critical one is a fix for ahci oops during boot.  Also, a new
  smallish platform ahci driver is added and sata_inic162x is marked
  clearly as experimental (it whines during boot too) as data corruption
  seems rather common on the device and it's unlikely to get any love in
  the foreseeable future.  If the whining doesn't draw any attention, I
  think we'd probably be better of making the driver depend on BROKEN in
  a couple releases"

This is v2 of this pull request with fixed dependencies for ahci_imx.

* 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ahci_imx: depend on CONFIG_MFD_SYSCON
  ahci_imx: add ahci sata support on imx platforms
  ARM: imx6q: update the sata bits definitions of gpr13
  ahci: fix Null pointer dereference in achi_host_active()
  libata: make it clear that sata_inic162x is experimental
  libata: replace strict_strtol() with kstrtol()
  ata: Fix DVD not dectected at some platform with Wellsburg PCH
2013-07-26 11:17:46 -07:00
Rafael J. Wysocki
8e5c2b776a Revert "ACPI / video / i915: No ACPI backlight if firmware expects Windows 8"
We attempted to address a regression introduced by commit a57f7f9
(ACPICA: Add Windows8/Server2012 string for _OSI method.) after which
ACPI video backlight support doesn't work on a number of systems,
because the relevant AML methods in the ACPI tables in their BIOSes
become useless after the BIOS has been told that the OS is compatible
with Windows 8.  That problem is tracked by the bug entry at:

https://bugzilla.kernel.org/show_bug.cgi?id=51231

Commit 8c5bd7a (ACPI / video / i915: No ACPI backlight if firmware
expects Windows 8) introduced for this purpose essentially prevented
the ACPI backlight support from being used if the BIOS had been told
that the OS was compatible with Windows 8 and the i915 driver was
loaded, in which case the backlight would always be handled by i915.
Unfortunately, however, that turned out to cause problems with
backlight to appear on multiple systems with symptoms indicating that
i915 was unable to control the backlight on those systems as
expected.

For this reason, revert commit 8c5bd7a, but leave the function
acpi_video_backlight_quirks() introduced by it, because another
commit on top of it uses that function.

References: https://lkml.org/lkml/2013/7/21/119
References: https://lkml.org/lkml/2013/7/22/261
References: https://lkml.org/lkml/2013/7/23/429
References: https://lkml.org/lkml/2013/7/23/459
References: https://lkml.org/lkml/2013/7/23/81
References: https://lkml.org/lkml/2013/7/24/27
Reported-and-tested-by: James Hogan <james@albanarts.com>
Reported-and-tested-by: Kamal Mostafa <kamal@canonical.com>
Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com>
Reported-and-tested-by: Steven Newbury <steve@snewbury.org.uk>
Reported-by: Martin Steigerwald <Martin@lichtvoll.de>
Reported-by: Kalle Valo <kvalo@adurom.com>
Tested-by: Joerg Platte <jplatte@naasa.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2013-07-26 14:59:20 +02:00
Linus Torvalds
b48a97be8e Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
 "This push fixes a memory corruption issue in caam, as well as
  reverting the new optimised crct10dif implementation as it breaks boot
  on initrd systems.

  Hopefully crct10dif will be reinstated once the supporting code is
  added so that it doesn't break boot"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
  crypto: caam - Fixed the memory out of bound overwrite issue
2013-07-24 11:05:18 -07:00
Richard Zhu
6a6c21ef48 ARM: imx6q: update the sata bits definitions of gpr13
Replace the SATA_PHY_# by the more readable definitons.

tj: Being routed through libata branch to enable implementation of
    ahci_imx.

Signed-off-by: Richard Zhu <r65037@freescale.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2013-07-24 12:28:15 -04:00
Herbert Xu
e70308ec0e Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"
This reverts commits
    67822649d7
    39761214ee
    0b95a7f857
    31d939625a
    2d31e518a4

Unfortunately this change broke boot on some systems that used an
initrd which does not include the newly created crct10dif modules.
As these modules are required by sd_mod under certain configurations
this is a serious problem.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2013-07-24 17:04:16 +10:00
Linus Torvalds
04012e3076 Fix EDAC lockdep splat
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Merge tag 'please-pull-bp-edac' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras

Pull EDAC fix from Tony Luck:
 "Fix EDAC lockdep splat"

* tag 'please-pull-bp-edac' of git://git.kernel.org/pub/scm/linux/kernel/git/ras/ras:
  EDAC: Fix lockdep splat
2013-07-23 19:43:55 -07:00
Borislav Petkov
88d84ac973 EDAC: Fix lockdep splat
Fix the following:

BUG: key ffff88043bdd0330 not in .data!
------------[ cut here ]------------
WARNING: at kernel/lockdep.c:2987 lockdep_init_map+0x565/0x5a0()
DEBUG_LOCKS_WARN_ON(1)
Modules linked in: glue_helper sb_edac(+) edac_core snd acpi_cpufreq lrw gf128mul ablk_helper iTCO_wdt evdev i2c_i801 dcdbas button cryptd pcspkr iTCO_vendor_support usb_common lpc_ich mfd_core soundcore mperf processor microcode
CPU: 2 PID: 599 Comm: modprobe Not tainted 3.10.0 #1
Hardware name: Dell Inc. Precision T3600/0PTTT9, BIOS A08 01/24/2013
 0000000000000009 ffff880439a1d920 ffffffff8160a9a9 ffff880439a1d958
 ffffffff8103d9e0 ffff88043af4a510 ffffffff81a16e11 0000000000000000
 ffff88043bdd0330 0000000000000000 ffff880439a1d9b8 ffffffff8103dacc
Call Trace:
  dump_stack
  warn_slowpath_common
  warn_slowpath_fmt
  lockdep_init_map
  ? trace_hardirqs_on_caller
  ? trace_hardirqs_on
  debug_mutex_init
  __mutex_init
  bus_register
  edac_create_sysfs_mci_device
  edac_mc_add_mc
  sbridge_probe
  pci_device_probe
  driver_probe_device
  __driver_attach
  ? driver_probe_device
  bus_for_each_dev
  driver_attach
  bus_add_driver
  driver_register
  __pci_register_driver
  ? 0xffffffffa0010fff
  sbridge_init
  ? 0xffffffffa0010fff
  do_one_initcall
  load_module
  ? unset_module_init_ro_nx
  SyS_init_module
  tracesys
---[ end trace d24a70b0d3ddf733 ]---
EDAC MC0: Giving out device to 'sbridge_edac.c' 'Sandy Bridge Socket#0': DEV 0000:3f:0e.0
EDAC sbridge: Driver loaded.

What happens is that bus_register needs a statically allocated lock_key
because the last is handed in to lockdep. However, struct mem_ctl_info
embeds struct bus_type (the whole struct, not a pointer to it) and the
whole thing gets dynamically allocated.

Fix this by using a statically allocated struct bus_type for the MC bus.

Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Markus Trippelsdorf <markus@trippelsdorf.de>
Cc: stable@kernel.org # v3.10
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-07-23 16:01:28 -07:00
Linus Torvalds
c2468d32f5 Merge branch 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup changes from Tejun Heo:
 "This contains two patches, both of which aren't fixes per-se but I
  think it'd be better to fast-track them.

  One removes bcache_subsys_id which was added without proper review
  through the block tree.  Fortunately, bcache cgroup code is
  unconditionally disabled, so this was never exposed to userland.  The
  cgroup subsys_id is removed.  Kent will remove the affected (disabled)
  code through bcache branch.

  The other simplifies task_group_path_from_hierarchy().  The function
  doesn't currently have in-kernel users but there are external code and
  development going on dependent on the function and making the function
  available for 3.11 would make things go smoother"

* 'for-3.11-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
  cgroup: replace task_cgroup_path_from_hierarchy() with task_cgroup_path()
  cgroup: remove bcache_subsys_id which got added stealthily
2013-07-23 15:48:35 -07:00
Arnd Bergmann
a829abf8da ARM: pxa: propagate errors from regulator_enable() to pxamci
The em_x270_mci_setpower() and em_x270_usb_hub_init() functions
call regulator_enable(), which may return an error that must
be checked.

This changes the em_x270_usb_hub_init() function to bail out
if it fails, and changes the pxamci_platform_data->setpower
callback so that the a failed em_x270_mci_setpower call
can be propagated by the pxamci driver into the mmc core.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Mike Rapoport <mike@compulab.co.il>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
Acked-by: Chris Ball <cjb@laptop.org>
[olof: fixed order of regulator_enable() and test in em_x270_usb_hub_init]
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-07-23 12:15:15 -07:00
Olof Johansson
d757380c11 The imx fixes for 3.11:
* A few device tree source fixes regarding pinctrl, clock, and pwm
   backlight.
 * Fixes imx28 and imx51 audio driver failure caused by sgtl5000 codec
   driver change by supplying the correct clock for codec.
 * imx6q emi_sel clock muxing and imx6q-iomuxc-gpr macro fixes
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Merge tag 'imx-fixes-3.11' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes

From Shawn Guo, imx fixes for 3.11:

- A few device tree source fixes regarding pinctrl, clock, and pwm
  backlight.
- Fixes imx28 and imx51 audio driver failure caused by sgtl5000 codec
  driver change by supplying the correct clock for codec.
- imx6q emi_sel clock muxing and imx6q-iomuxc-gpr macro fixes

* tag 'imx-fixes-3.11' of git://git.linaro.org/people/shawnguo/linux-2.6:
  ARM: dts: imx51-babbage: Pass a real clock to the codec
  ARM i.MX53: mba53: Fix PWM backlight DT node
  ARM: imx: fix vf610 enet module clock selection
  ARM: mxs: saif0 is the clock provider to sgtl5000
  ARM: i.MX6Q: correct emi_sel clock muxing
  ARM i.MX6Q: Fix IOMUXC GPR1 defines for ENET_CLK_SEL and IPU1/2_MUX
  ARM: i.MX27: Typo fix
  ARM: imx27: Fix documentation for SPLL clock
  ARM i.MX53: Fix UART pad configuration
2013-07-22 19:58:02 -07:00
Guennadi Liakhovetski
ab116a4df4 dmaengine: shdma: fix a build failure on platforms with no DMA support
On platforms with no support for the shdma dmaengine driver build is
currently failing with

drivers/built-in.o: In function `sh_mobile_sdhi_probe':
drivers/mmc/host/sh_mobile_sdhi.c:170: undefined reference to`shdma_chan_filter'

Fix the breakage by defining shdma_chan_filter to NULL in such
configurations.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski+renesas@gmail.com>
[horms+renesas@verge.net.au: Apply change to shdma-base.h instead of sh_dma.h]
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Olof Johansson <olof@lixom.net>
2013-07-22 19:40:01 -07:00
Linus Torvalds
d4c90b1b9f Merge branch 'for-3.11/drivers' of git://git.kernel.dk/linux-block
Pull block IO driver bits from Jens Axboe:
 "As I mentioned in the core block pull request, due to real life
  circumstances the driver pull request would be late.  Now it looks
  like -rc2 late...  On the plus side, apart form the rsxx update, these
  are all things that I could argue could go in later in the cycle as
  they are fixes and not features.  So even though things are late, it's
  not ALL bad.

  The pull request contains:

   - Updates to bcache, all bug fixes, from Kent.

   - A pile of drbd bug fixes (no big features this time!).

   - xen blk front/back fixes.

   - rsxx driver updates, some of them deferred form 3.10.  So should be
     well cooked by now"

* 'for-3.11/drivers' of git://git.kernel.dk/linux-block: (63 commits)
  bcache: Allocation kthread fixes
  bcache: Fix GC_SECTORS_USED() calculation
  bcache: Journal replay fix
  bcache: Shutdown fix
  bcache: Fix a sysfs splat on shutdown
  bcache: Advertise that flushes are supported
  bcache: check for allocation failures
  bcache: Fix a dumb race
  bcache: Use standard utility code
  bcache: Update email address
  bcache: Delete fuzz tester
  bcache: Document shrinker reserve better
  bcache: FUA fixes
  drbd: Allow online change of al-stripes and al-stripe-size
  drbd: Constants should be UPPERCASE
  drbd: Ignore the exit code of a fence-peer handler if it returns too late
  drbd: Fix rcu_read_lock balance on error path
  drbd: fix error return code in drbd_init()
  drbd: Do not sleep inside rcu
  bcache: Refresh usage docs
  ...
2013-07-22 19:02:52 -07:00
Linus Torvalds
ea45ea70b6 ACPI video support fixes for 3.11
- Change from Aaron Lu makes ACPICA export a variable which can be
   used by driver code to determine whether or not the BIOS believes
   that we are compatible with Windows 8.
 
 - Change from Matthew Garrett makes the ACPI video driver initialize
   the ACPI backlight even if it is not going to be used afterward
   (that is needed for backlight control to work on Thinkpads).
 
 - Fix from Rafael J Wysocki implements Windows 8 backlight support
   workaround making i915 take over bakclight control if the firmware
   thinks it's dealing with Windows 8.  Based on the work of multiple
   developers including Matthew Garrett, Chun-Yi Lee, Seth Forshee,
   and Aaron Lu.
 
 - Fix from Aaron Lu makes the kernel follow Windows 8 by informing
   the firmware through the _DOS method that it should not carry out
   automatic brightness changes, so that brightness can be controlled
   by GUI.
 
 /
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Merge tag 'acpi-video-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI video support fixes from Rafael Wysocki:
 "I'm sending a separate pull request for this as it may be somewhat
  controversial.  The breakage addressed here is not really new and the
  fixes may not satisfy all users of the affected systems, but we've had
  so much back and forth dance in this area over the last several weeks
  that I think it's time to actually make some progress.

  The source of the problem is that about a year ago we started to tell
  BIOSes that we're compatible with Windows 8, which we really need to
  do, because some systems shipping with Windows 8 are tested with it
  and nothing else, so if we tell their BIOSes that we aren't compatible
  with Windows 8, we expose our users to untested BIOS/AML code paths.

  However, as it turns out, some Windows 8-specific AML code paths are
  not tested either, because Windows 8 actually doesn't use the ACPI
  methods containing them, so if we declare Windows 8 compatibility and
  attempt to use those ACPI methods, things break.  That occurs mostly
  in the backlight support area where in particular the _BCM and _BQC
  methods are plain unusable on some systems if the OS declares Windows
  8 compatibility.

  [ The additional twist is that they actually become usable if the OS
    says it is not compatible with Windows 8, but that may cause
    problems to show up elsewhere ]

  Investigation carried out by Matthew Garrett indicates that what
  Windows 8 does about backlight is to leave backlight control up to
  individual graphics drivers.  At least there's evidence that it does
  that if the Intel graphics driver is used, so we've decided to follow
  Windows 8 in that respect and allow i915 to control backlight (Daniel
  likes that part).

  The first commit from Aaron Lu makes ACPICA export the variable from
  which we can infer whether or not the BIOS believes that we are
  compatible with Windows 8.

  The second commit from Matthew Garrett prepares the ACPI video driver
  by making it initialize the ACPI backlight even if it is not going to
  be used afterward (that is needed for backlight control to work on
  Thinkpads).

  The third commit implements the actual workaround making i915 take
  over backlight control if the firmware thinks it's dealing with
  Windows 8 and is based on the work of multiple developers, including
  Matthew Garrett, Chun-Yi Lee, Seth Forshee, and Aaron Lu.

  The final commit from Aaron Lu makes us follow Windows 8 by informing
  the firmware through the _DOS method that it should not carry out
  automatic brightness changes, so that brightness can be controlled by
  GUI.

  Hopefully, this approach will allow us to avoid using blacklists of
  systems that should not declare Windows 8 compatibility just to avoid
  backlight control problems in the future.

   - Change from Aaron Lu makes ACPICA export a variable which can be
     used by driver code to determine whether or not the BIOS believes
     that we are compatible with Windows 8.

   - Change from Matthew Garrett makes the ACPI video driver initialize
     the ACPI backlight even if it is not going to be used afterward
     (that is needed for backlight control to work on Thinkpads).

   - Fix from Rafael J Wysocki implements Windows 8 backlight support
     workaround making i915 take over bakclight control if the firmware
     thinks it's dealing with Windows 8.  Based on the work of multiple
     developers including Matthew Garrett, Chun-Yi Lee, Seth Forshee,
     and Aaron Lu.

   - Fix from Aaron Lu makes the kernel follow Windows 8 by informing
     the firmware through the _DOS method that it should not carry out
     automatic brightness changes, so that brightness can be controlled
     by GUI"

* tag 'acpi-video-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / video: no automatic brightness changes by win8-compatible firmware
  ACPI / video / i915: No ACPI backlight if firmware expects Windows 8
  ACPI / video: Always call acpi_video_init_brightness() on init
  ACPICA: expose OSI version
2013-07-21 10:11:04 -07:00
Linus Torvalds
f6a0d9d585 Staging tree fixes for 3.11-rc2
Here are a few iio driver fixes for 3.11-rc2.  They are still spread
 across drivers/iio and drivers/staging/iio so they are coming in through
 this tree.
 
 I've also removed the drivers/staging/csr/ driver as the developers who
 originally sent it to me have moved on to other companies, and CSR still
 will not send us the specs for the device, making the driver pretty much
 obsolete and impossible to fix up.  Deleting it now prevents people from
 sending in lots of tiny codingsyle fixes that will never go anywhere.
 
 It also helps to offset the large lustre filesystem merge that happened
 in 3.11-rc1 in the overall 3.11.0 diffstat. :)
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging tree fixes from Greg KH:
 "Here are a few iio driver fixes for 3.11-rc2.  They are still spread
  across drivers/iio and drivers/staging/iio so they are coming in
  through this tree.

  I've also removed the drivers/staging/csr/ driver as the developers
  who originally sent it to me have moved on to other companies, and CSR
  still will not send us the specs for the device, making the driver
  pretty much obsolete and impossible to fix up.  Deleting it now
  prevents people from sending in lots of tiny codingsyle fixes that
  will never go anywhere.

  It also helps to offset the large lustre filesystem merge that
  happened in 3.11-rc1 in the overall 3.11.0 diffstat.  :)"

* tag 'staging-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: csr: remove driver
  iio: lps331ap: Fix wrong in_pressure_scale output value
  iio staging: fix lis3l02dq, read error handling
  staging:iio:ad7291: add missing .driver_module to struct iio_info
  iio: ti_am335x_adc: add missing .driver_module to struct iio_info
  iio: mxs-lradc: Remove useless check in read_raw
  iio: mxs-lradc: Fix misuse of iio->trig
  iio: inkern: fix iio_convert_raw_to_processed_unlocked
  iio: Fix iio_channel_has_info
  iio:trigger: device_unregister->device_del to avoid double free
  iio: dac: ad7303: fix error return code in ad7303_probe()
2013-07-20 15:42:38 -07:00
Linus Torvalds
36231d255b Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
 "The sget() one is a long-standing bug and will need to go into -stable
  (in fact, it had been originally caught in RHEL6), the other two are
  3.11-only"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  vfs: constify dentry parameter in d_count()
  livelock avoidance in sget()
  allow O_TMPFILE to work with O_WRONLY
2013-07-20 10:50:01 -07:00
Peng Tao
24924a20da vfs: constify dentry parameter in d_count()
so that it can be used in places like d_compare/d_hash
without causing a compiler warning.

Signed-off-by: Peng Tao <tao.peng@emc.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2013-07-20 05:06:27 +04:00
Linus Torvalds
b7356abb9f Power management and ACPI fixes for 3.11-rc2
- Two cpufreq commits from the 3.10 cycle introduced regressions.
   The first of them was buggy (it did way much more than it needed
   to do) and the second one attempted to fix an issue introduced by
   the first one.  Fixes from Srivatsa S Bhat revert both.
 
 - If autosleep triggers during system shutdown and the shutdown
   callbacks of some device drivers have been called already, it may
   crash the system.  Fix from Liu Shuo prevents that from happening
   by making try_to_suspend() check system_state.
 
 - The ACPI memory hotplug driver doesn't clear its driver_data on
   errors which may cause a NULL poiter dereference to happen later.
   Fix from Toshi Kani.
 
 - The ACPI namespace scanning code should not try to attach scan
   handlers to device objects that have them already, which may confuse
   things quite a bit, and it should rescan the whole namespace branch
   starting at the given node after receiving a bus check notify event
   even if the device at that particular node has been discovered
   already.  Fixes from Rafael J Wysocki.
 
 - New ACPI video blacklist entry for a system whose initial backlight
   setting from the BIOS doesn't make sense.  From Lan Tianyu.
 
 - Garbage string output avoindance for ACPI PNP from Liu Shuo.
 
 - Two Kconfig fixes for issues introduced recently in the s3c24xx
   cpufreq driver (when moving the driver to drivers/cpufreq) from
   Paul Bolle.
 
 - Trivial comment fix in pm_wakeup.h from Chanwoo Choi.
 
 /
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Merge tag 'pm+acpi-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management and ACPI fixes from Rafael Wysocki:
 "These are fixes collected over the last week, most importnatly two
  cpufreq reverts fixing regressions introduced in 3.10, an autoseelp
  fix preventing systems using it from crashing during shutdown and two
  ACPI scan fixes related to hotplug.

  Specifics:

   - Two cpufreq commits from the 3.10 cycle introduced regressions.
     The first of them was buggy (it did way much more than it needed to
     do) and the second one attempted to fix an issue introduced by the
     first one.  Fixes from Srivatsa S Bhat revert both.

   - If autosleep triggers during system shutdown and the shutdown
     callbacks of some device drivers have been called already, it may
     crash the system.  Fix from Liu Shuo prevents that from happening
     by making try_to_suspend() check system_state.

   - The ACPI memory hotplug driver doesn't clear its driver_data on
     errors which may cause a NULL poiter dereference to happen later.
     Fix from Toshi Kani.

   - The ACPI namespace scanning code should not try to attach scan
     handlers to device objects that have them already, which may
     confuse things quite a bit, and it should rescan the whole
     namespace branch starting at the given node after receiving a bus
     check notify event even if the device at that particular node has
     been discovered already.  Fixes from Rafael J Wysocki.

   - New ACPI video blacklist entry for a system whose initial backlight
     setting from the BIOS doesn't make sense.  From Lan Tianyu.

   - Garbage string output avoindance for ACPI PNP from Liu Shuo.

   - Two Kconfig fixes for issues introduced recently in the s3c24xx
     cpufreq driver (when moving the driver to drivers/cpufreq) from
     Paul Bolle.

   - Trivial comment fix in pm_wakeup.h from Chanwoo Choi"

* tag 'pm+acpi-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / video: ignore BIOS initial backlight value for Fujitsu E753
  PNP / ACPI: avoid garbage in resource name
  cpufreq: Revert commit 2f7021a8 to fix CPU hotplug regression
  cpufreq: s3c24xx: fix "depends on ARM_S3C24XX" in Kconfig
  cpufreq: s3c24xx: rename CONFIG_CPU_FREQ_S3C24XX_DEBUGFS
  PM / Sleep: Fix comment typo in pm_wakeup.h
  PM / Sleep: avoid 'autosleep' in shutdown progress
  cpufreq: Revert commit a66b2e to fix suspend/resume regression
  ACPI / memhotplug: Fix a stale pointer in error path
  ACPI / scan: Always call acpi_bus_scan() for bus check notifications
  ACPI / scan: Do not try to attach scan handlers to devices having them
2013-07-19 09:59:06 -07:00
John W. Linville
876fbb5d3e Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless into for-davem 2013-07-19 12:54:28 -04:00
Linus Torvalds
ecb2cf1a6b Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "A couple interesting SKB fragment handling fixes, plus the usual small
  bits here and there:

   1) Fix 64-bit divide build failure on 32-bit platforms in mlx5, from
      Tim Gardner.

   2) Get rid of a stupid reimplementation on "%*phC" in our sysfs MAC
      address printing helper.

   3) Fix NETIF_F_SG capability advertisement in hyperv driver, if the
      device can't do checksumming offloads then it shouldn't say it can
      do SG either.  From Haiyang Zhang.

   4) bgmac needs to depend on PHYLIB, from Hauke Mehrtens.

   5) Don't leak DMA mappings on mapping failures, from Neil Horman.

   6) We need to reset the transport header of SKBs in ipv4 before we
      attempt to perform early socket demux, just like ipv6 does.  From
      Eric Dumazet.

   7) Add missing locking on vxlan device removal, from Stephen
      Hemminger.

   8) xen-netfront has to make two passes over an SKB to prepare it for
      transfer.  One pass calculates the number of slots needed, the
      second massages the SKB and fills the slots.  Unfortunately, the
      first pass doesn't calculate the number of slots properly so we
      can end up trying to build a MAX_SKB_FRAGS + 1 SKB which doesn't
      work out so well.  Fix from Jan Beulich with help and discussion
      with several others.

   9) Fix a similar problem in tun and macvtap, which have to split up
      scatter-gather elements at PAGE_SIZE boundaries.  Don't do
      zerocopy if it would result in a > MAX_SKB_FRAGS skb.  Fixes from
      Jason Wang.

  10) On receive, once we've decoded the VLAN state completely, clear
      skb->vlan_tci.  Otherwise demuxed tunnels underneath can trigger
      the VLAN code again, corrupting the packet.  Fix from Eric
      Dumazet"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  vlan: fix a race in egress prio management
  vlan: mask vlan prio bits
  macvtap: do not zerocopy if iov needs more pages than MAX_SKB_FRAGS
  tuntap: do not zerocopy if iov needs more pages than MAX_SKB_FRAGS
  pkt_sched: sch_qfq: remove a source of high packet delay/jitter
  xen-netfront: pull on receive skb may need to happen earlier
  vxlan: add necessary locking on device removal
  hyperv: Fix the NETIF_F_SG flag setting in netvsc
  net: Fix sysfs_format_mac() code duplication.
  be2net: Fix to avoid hardware workaround when not needed
  macvtap: do not assume 802.1Q when send vlan packets
  macvtap: fix the missing ret value of TUNSETQUEUE
  ipv4: set transport header earlier
  mlx5 core: Fix __udivdi3 when compiling for 32 bit arches
  bgmac: add dependency to phylib
  net/irda: fixed style issues in irlan_eth
  ethtool: fixed trailing statements in ethtool
  ndisc: bool initializations should use true and false
  atl1e: unmap partially mapped skb on dma error and free skb
2013-07-18 20:08:47 -07:00
Arnd Bergmann
b01a60be7a ssb: fix alignment of struct bcma_device_id
The ARM OABI and EABI disagree on the alignment of structures
with small members, so module init tools may interpret the
ssb device table incorrectly, as shown  by this warning when
building the b43 device driver in an OABI kernel:

FATAL: drivers/net/wireless/b43/b43: sizeof(struct ssb_device_id)=6 is
not a modulo of the size of section __mod_ssb_device_table=88.

Forcing the default (EABI) alignment on the structure makes this
problem go away. Since the ssb_device_id may have the same problem,
better fix both structures.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: John W. Linville <linville@tuxdriver.com>
Cc: Michael Buesch <mb@bu3sch.de>
Cc: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-07-18 16:21:59 -04:00
Eric Dumazet
d4b812dea4 vlan: mask vlan prio bits
In commit 48cc32d38a
("vlan: don't deliver frames for unknown vlans to protocols")
Florian made sure we set pkt_type to PACKET_OTHERHOST
if the vlan id is set and we could find a vlan device for this
particular id.

But we also have a problem if prio bits are set.

Steinar reported an issue on a router receiving IPv6 frames with a
vlan tag of 4000 (id 0, prio 2), and tunneled into a sit device,
because skb->vlan_tci is set.

Forwarded frame is completely corrupted : We can see (8100:4000)
being inserted in the middle of IPv6 source address :

16:48:00.780413 IP6 2001:16d8:8100:4000:ee1c:0:9d9:bc87 >
9f94:4d95:2001:67c:29f4::: ICMP6, unknown icmp6 type (0), length 64
       0x0000:  0000 0029 8000 c7c3 7103 0001 a0ae e651
       0x0010:  0000 0000 ccce 0b00 0000 0000 1011 1213
       0x0020:  1415 1617 1819 1a1b 1c1d 1e1f 2021 2223
       0x0030:  2425 2627 2829 2a2b 2c2d 2e2f 3031 3233

It seems we are not really ready to properly cope with this right now.

We can probably do better in future kernels :
vlan_get_ingress_priority() should be a netdev property instead of
a per vlan_dev one.

For stable kernels, lets clear vlan_tci to fix the bugs.

Reported-by: Steinar H. Gunderson <sesse@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-18 13:05:23 -07:00
Linus Torvalds
7a62711aac Driver core patches for 3.11-rc2
Here are some driver core patches for 3.11-rc2.  They aren't really
 bugfixes, but a bunch of new helper macros for drivers to properly
 create attribute groups, which drivers and subsystems need to fix up a
 ton of race issues with incorrectly creating sysfs files (binary and
 normal) after userspace has been told that the device is present.
 
 Also here is the ability to create binary files as attribute groups, to
 solve that race condition, which was impossible to do before this, so
 that's my fault the drivers were broken.
 
 The majority of the .c changes is indenting and moving code around a
 bit.  It affects no existing code, but allows the large backlog of 70+
 patches that I already have created to start flowing into the different
 subtrees, instead of having to live in my driver-core tree, causing
 merge nightmares in linux-next for the next few months.
 
 These were finalized too late for the -rc1 merge window, which is why
 they were didn't make that pull request, testing and review from others
 didn't happen until a few weeks ago, and then there's the whole
 distraction of the past few days, which prevented these from getting to
 you sooner, sorry about that.
 
 Oh, and there's a bugfix for the documentation build warning in here as
 well.  All of these have been in linux-next this week, with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core patches from Greg KH:
 "Here are some driver core patches for 3.11-rc2.  They aren't really
  bugfixes, but a bunch of new helper macros for drivers to properly
  create attribute groups, which drivers and subsystems need to fix up a
  ton of race issues with incorrectly creating sysfs files (binary and
  normal) after userspace has been told that the device is present.

  Also here is the ability to create binary files as attribute groups,
  to solve that race condition, which was impossible to do before this,
  so that's my fault the drivers were broken.

  The majority of the .c changes is indenting and moving code around a
  bit.  It affects no existing code, but allows the large backlog of 70+
  patches that I already have created to start flowing into the
  different subtrees, instead of having to live in my driver-core tree,
  causing merge nightmares in linux-next for the next few months.

  These were finalized too late for the -rc1 merge window, which is why
  they were didn't make that pull request, testing and review from
  others didn't happen until a few weeks ago, and then there's the whole
  distraction of the past few days, which prevented these from getting
  to you sooner, sorry about that.

  Oh, and there's a bugfix for the documentation build warning in here
  as well.  All of these have been in linux-next this week, with no
  reported problems"

* tag 'driver-core-3.11-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
  driver-core: fix new kernel-doc warning in base/platform.c
  sysfs: use file mode defines from stat.h
  sysfs: add more helper macro's for (bin_)attribute(_groups)
  driver core: add default groups to struct class
  driver core: Introduce device_create_groups
  sysfs: prevent warning when only using binary attributes
  sysfs: add support for binary attributes in groups
  driver core: device.h: add RW and RO attribute macros
  sysfs.h: add BIN_ATTR macro
  sysfs.h: add ATTRIBUTE_GROUPS() macro
  sysfs.h: add __ATTR_RW() macro
2013-07-18 12:48:40 -07:00
Linus Torvalds
3f334c2081 Merge branch 'cpuinit_phase2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux
Pull phase two of __cpuinit removal from Paul Gortmaker:
 "With the __cpuinit infrastructure removed earlier, this group of
  commits only removes the function/data tagging that was done with the
  various (now no-op) __cpuinit related prefixes.

  Now that the dust has settled with yesterday's v3.11-rc1, there
  hopefully shouldn't be any new users leaking back in tree, but I think
  we can leave the harmless no-op stubs there for a release as a
  courtesy to those who still have out of tree stuff and weren't paying
  attention.

  Although the commits are against the recent tag to allow for minor
  context refreshes for things like yesterday's v3.11-rc1~ slab content,
  the patches have been largely unchanged for weeks, aside from such
  trivial updates.

  For detail junkies, the largely boring and mostly irrelevant history
  of the patches can be viewed at:

    http://git.kernel.org/cgit/linux/kernel/git/paulg/cpuinit-delete.git

  If nothing else, I guess it does at least demonstrate the level of
  involvement required to shepherd such a treewide change to completion.

  This is the same repository of patches that has been applied to the
  end of the daily linux-next branches for the past several weeks"

* 'cpuinit_phase2' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: (28 commits)
  block: delete __cpuinit usage from all block files
  drivers: delete __cpuinit usage from all remaining drivers files
  kernel: delete __cpuinit usage from all core kernel files
  rcu: delete __cpuinit usage from all rcu files
  net: delete __cpuinit usage from all net files
  acpi: delete __cpuinit usage from all acpi files
  hwmon: delete __cpuinit usage from all hwmon files
  cpufreq: delete __cpuinit usage from all cpufreq files
  clocksource+irqchip: delete __cpuinit usage from all related files
  x86: delete __cpuinit usage from all x86 files
  score: delete __cpuinit usage from all score files
  xtensa: delete __cpuinit usage from all xtensa files
  openrisc: delete __cpuinit usage from all openrisc files
  m32r: delete __cpuinit usage from all m32r files
  hexagon: delete __cpuinit usage from all hexagon files
  frv: delete __cpuinit usage from all frv files
  cris: delete __cpuinit usage from all cris files
  metag: delete __cpuinit usage from all metag files
  tile: delete __cpuinit usage from all tile files
  sh: delete __cpuinit usage from all sh files
  ...
2013-07-18 10:50:26 -07:00
Rafael J. Wysocki
8c5bd7adb2 ACPI / video / i915: No ACPI backlight if firmware expects Windows 8
According to Matthew Garrett, "Windows 8 leaves backlight control up
to individual graphics drivers rather than making ACPI calls itself.
There's plenty of evidence to suggest that the Intel driver for
Windows [8] doesn't use the ACPI interface, including the fact that
it's broken on a bunch of machines when the OS claims to support
Windows 8.  The simplest thing to do appears to be to disable the
ACPI backlight interface on these systems".

There's a problem with that approach, however, because simply
avoiding to register the ACPI backlight interface if the firmware
calls _OSI for Windows 8 may not work in the following situations:
 (1) The ACPI backlight interface actually works on the given system
     and the i915 driver is not loaded (e.g. another graphics driver
     is used).
 (2) The ACPI backlight interface doesn't work on the given system,
     but there is a vendor platform driver that will register its
     own, equally broken, backlight interface if not prevented from
     doing so by the ACPI subsystem.
Therefore we need to allow the ACPI backlight interface to be
registered until the i915 driver is loaded which then will unregister
it if the firmware has called _OSI for Windows 8 (or will register
the ACPI video driver without backlight support if not already
present).

For this reason, introduce an alternative function for registering
ACPI video, acpi_video_register_with_quirks(), that will check
whether or not the ACPI video driver has already been registered
and whether or not the backlight Windows 8 quirk has to be applied.
If the quirk has to be applied, it will block the ACPI backlight
support and either unregister the backlight interface if the ACPI
video driver has already been registered, or register the ACPI
video driver without the backlight interface otherwise.  Make
the i915 driver use acpi_video_register_with_quirks() instead of
acpi_video_register() in i915_driver_load().

This change is based on earlier patches from Matthew Garrett,
Chun-Yi Lee and Seth Forshee and includes a fix from Aaron Lu's.

References: https://bugzilla.kernel.org/show_bug.cgi?id=51231
Tested-by: Aaron Lu <aaron.lu@intel.com>
Tested-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Tested-by: Yves-Alexis Perez <corsac@debian.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Aaron Lu <aaron.lu@intel.com>
Acked-by: Matthew Garrett <matthew.garrett@nebula.com>
2013-07-18 02:08:06 +02:00
Greg Kroah-Hartman
78077256bc The first round of IIO fixes for the 3.11 cycle.
This set is larger than I would like, partly due to my lack of review
 time in the weeks before the merge window and partly because a
 couple of large drivers and the subsystem as a whole seem to be
 getting a lot more exposure and testing recently.
 
 1) A long term bug in trigger handling gave a double free of the device.
 
 2) Wrong return value handling means offsets are ignored in
    iio_convert_raw_to_processed_unlocked.
 
 3) The iio_channel_has_info utility function was incorrectly updated
    during the recent info_mask split, this is now fixed.
 
 4) mxs-lradc has a couple of little fixes.
 
 5) A couple of missing .driver_module entries meant that drivers
    could be removed from underneath their users.
 
 6) Error path fixes for ad7303 and lis3l02dq.
 
 7) The scale value for presure in the lps331ap driver was out by
    a factor of 100.
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Merge tag 'iio-fixes-for-3.11a' of git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus

Jonathan writes:

The first round of IIO fixes for the 3.11 cycle.

This set is larger than I would like, partly due to my lack of review
time in the weeks before the merge window and partly because a
couple of large drivers and the subsystem as a whole seem to be
getting a lot more exposure and testing recently.

1) A long term bug in trigger handling gave a double free of the device.

2) Wrong return value handling means offsets are ignored in
   iio_convert_raw_to_processed_unlocked.

3) The iio_channel_has_info utility function was incorrectly updated
   during the recent info_mask split, this is now fixed.

4) mxs-lradc has a couple of little fixes.

5) A couple of missing .driver_module entries meant that drivers
   could be removed from underneath their users.

6) Error path fixes for ad7303 and lis3l02dq.

7) The scale value for presure in the lps331ap driver was out by
   a factor of 100.
2013-07-16 22:41:38 -07:00
Dave Jones
c0d15cc7ee linked-list: Remove __list_for_each
__list_for_each used to be the non prefetch() aware list walking
primitive.  When we removed the prefetch macros from the list routines,
it became redundant.  Given it does exactly the same thing as
list_for_each now, we might as well remove it and call list_for_each
directly.

All users of __list_for_each have been converted to list_for_each calls
in the current merge window.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-16 22:00:14 -07:00
Alan Stern
36ff66db3f USB: move the definition of USB_MAXCHILDREN
The USB_MAXCHILDREN symbol is used in include/uapi/linux/usb/ch11.h, a
user-mode header, even though it is defined in include/linux/usb.h,
which is kernel-only.  This causes compile-time errors when user
programs try to #include linux/usb/ch11.h.

This patch fixes the problem by moving the definition of USB_MAXCHILDREN
into ch11.h.  It also gets rid of unneeded parentheses.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-16 15:33:02 -07:00
Oliver Schinagl
aa01aa3ca2 sysfs: use file mode defines from stat.h
With the last patches stat.h was included to the header, and thus those
permission defines should be used.

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-16 10:57:37 -07:00
Oliver Schinagl
3493f69f4c sysfs: add more helper macro's for (bin_)attribute(_groups)
With the recent changes to sysfs there's various helper macro's.
However there's no RW, RO BIN_ helper macro's. This patch adds them.

Signed-off-by: Oliver Schinagl <oliver@schinagl.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-16 10:57:37 -07:00
Greg Kroah-Hartman
d05a6f96c7 driver core: add default groups to struct class
We should be using groups, not attribute lists, for classes to allow
subdirectories, and soon, binary files.  Groups are just more flexible
overall, so add them.

The dev_attrs list will go away after all in-kernel users are converted
to use dev_groups.

Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-07-16 10:57:37 -07:00