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We want the staging fixes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Pull NFS client bugfixes from Trond Myklebust:
- Stable patch for lockd to fix Oopses due to inappropriate calls to
utsname()->nodename
- Stable patches for sunrpc to fix Oopses on shutdown when using
AF_LOCAL sockets with rpcbind
- Fix memory leak and error checking issues in nfs4_proc_lookup_mountpoint
- Fix a regression with the sync mount option failing to work for nfs4
mounts
- Fix a writeback performance issue when doing cache invalidation
- Remove an incorrect call to nfs_setsecurity in nfs_fhget
* tag 'nfs-for-3.11-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4: Fix up nfs4_proc_lookup_mountpoint
NFS: Remove unnecessary call to nfs_setsecurity in nfs_fhget()
NFSv4: Fix the sync mount option for nfs4 mounts
NFS: Fix writeback performance issue on cache invalidation
SUNRPC: If the rpcbind channel is disconnected, fail the call to unregister
SUNRPC: Don't auto-disconnect from the local rpcbind socket
LOCKD: Don't call utsname()->nodename from nlmclnt_setlockargs
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are 3 small fixes for staging/IIO drivers for 3.11-rc5. Nothing
huge, two IIO driver fixes, and a zcache fix. All of these have been
in linux-next for a while"
* tag 'staging-3.11-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
staging: zcache: fix "zcache=" kernel parameter
iio: ti_am335x_adc: Fix wrong samples received on 1st read
iio:trigger: Fix use_count race condition
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Ensure that user_namespace->parent chain can't grow too much.
Currently we use the hardroded 32 as limit.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull regmap fixes from Mark Brown:
"Two things here, one is a fix for a nasty issue where we were failing
to sync the last register in a block when using raw writes and the
other fixes a missing header for the !REGMAP stubs so that we don't
rely on implicit includes in that case"
* tag 'regmap-v3.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Add missing header for !CONFIG_REGMAP stubs
regmap: cache: Make sure to sync the last register in a block
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If rpcbind causes our connection to the AF_LOCAL socket to close after
we've registered a service, then we want to be careful about reconnecting
since the mount namespace may have changed.
By simply refusing to reconnect the AF_LOCAL socket in the case of
unregister, we avoid the need to somehow save the mount namespace. While
this may lead to some services not unregistering properly, it should
be safe.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: Nix <nix@esperi.org.uk>
Cc: Jeff Layton <jlayton@redhat.com>
Cc: stable@vger.kernel.org # 3.9.x
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Oleg Nesterov has been working hard in closing all the holes that can
lead to race conditions between deleting an event and accessing an
event debugfs file. This included a fix to the debugfs system (acked
by Greg Kroah-Hartman). We think that all the holes have been patched
and hopefully we don't find more. I haven't marked all of them for
stable because I need to examine them more to figure out how far back
some of the changes need to go.
Along the way, some other fixes have been made. Alexander Z Lam fixed
some logic where the wrong buffer was being modifed.
Andrew Vagin found a possible corruption for machines that actually
allocate cpumask, as a reference to one was being zeroed out by
mistake.
Dhaval Giani found a bad prototype when tracing is not configured.
And I not only had some changes to help Oleg, but also finally fixed a
long standing bug that Dave Jones and others have been hitting, where
a module unload and reload can cause the function tracing accounting
to get screwed up"
* tag 'trace-fixes-3.11-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix reset of time stamps during trace_clock changes
tracing: Make TRACE_ITER_STOP_ON_FREE stop the correct buffer
tracing: Fix trace_dump_stack() proto when CONFIG_TRACING is not set
tracing: Fix fields of struct trace_iterator that are zeroed by mistake
tracing/uprobes: Fail to unregister if probe event files are in use
tracing/kprobes: Fail to unregister if probe event files are in use
tracing: Add comment to describe special break case in probe_remove_event_call()
tracing: trace_remove_event_call() should fail if call/file is in use
debugfs: debugfs_remove_recursive() must not rely on list_empty(d_subdirs)
ftrace: Check module functions being traced on reload
ftrace: Consolidate some duplicate code for updating ftrace ops
tracing: Change remove_event_file_dir() to clear "d_subdirs"->i_private
tracing: Introduce remove_event_file_dir()
tracing: Change f_start() to take event_mutex and verify i_private != NULL
tracing: Change event_filter_read/write to verify i_private != NULL
tracing: Change event_enable/disable_read() to verify i_private != NULL
tracing: Turn event/id->i_private into call->event.type
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regmap.h requires linux/err.h if CONFIG_REGMAP is not defined. Without it I get
error.
CC drivers/media/platform/exynos4-is/fimc-reg.o
In file included from drivers/media/platform/exynos4-is/fimc-reg.c:14:0:
include/linux/regmap.h: In function ‘regmap_write’:
include/linux/regmap.h:525:10: error: ‘EINVAL’ undeclared (first use in this function)
include/linux/regmap.h:525:10: note: each undeclared identifier is reported only once for each function it appears in
Signed-off-by: Mateusz Krawczuk <m.krawczuk@partner.samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Cc: stable@kernel.org
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git://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into staging-linus
Jonathan writes:
Second round of IIO fixes for the 3.11 cycle.
1) Fix a long term race in the IIO trigger handling.
This only effects cases where a single trigger is in use
by multiple devices.
2) ti_am335x fix an issue with incorrect data due to reading before
the sequencer is finished.
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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
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Signed-off-by: Peter Meerwald <pmeerw@pmeerw.net>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Cc: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Add a resource managed devm_iio_device_alloc()/devm_iio_device_free()
to automatically clean up any allocations made by IIO drivers,
thus leading to simplified IIO drivers code.
In addition, this will allow IIO drivers to use other devm_*() API
(like devm_request_irq) and don't care about the race between
iio_device_free() and the release of resources by Device core
during driver removing.
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Tested-by: Oleksandr Kravchenko <o.v.kravchenko@globallogic.com>
Reviewed-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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There are no users of this macro left and we have come to the conclusion that it
is not a good idea to expose the raw chip reset to userspace so the macro is
very unlikely to be used in new drivers.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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This patch add support to redirect the DRDY interrupt on INT1 or INT2
on accelerometer and pressure sensors.
Signed-off-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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When CONFIG_TRACING is not enabled, the stub prototype for trace_dump_stack()
is incorrect. It has (void) when it should be (int).
Link: http://lkml.kernel.org/r/CAPhKKr_H=ukFnBL4WgDOVT5ay2xeF-Ho+CA0DWZX0E2JW-=vSQ@mail.gmail.com
Signed-off-by: Dhaval Giani <dhaval.giani@gmail.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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tracing_read_pipe zeros all fields bellow "seq". The declaration contains
a comment about that, but it doesn't help.
The first field is "snapshot", it's true when current open file is
snapshot. Looks obvious, that it should not be zeroed.
The second field is "started". It was converted from cpumask_t to
cpumask_var_t (v2.6.28-4983-g4462344), in other words it was
converted from cpumask to pointer on cpumask.
Currently the reference on "started" memory is lost after the first read
from tracing_read_pipe and a proper object will never be freed.
The "started" is never dereferenced for trace_pipe, because trace_pipe
can't have the TRACE_FILE_ANNOTATE options.
Link: http://lkml.kernel.org/r/1375463803-3085183-1-git-send-email-avagin@openvz.org
Cc: stable@vger.kernel.org # 2.6.30
Signed-off-by: Andrew Vagin <avagin@openvz.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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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
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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"
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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>
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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
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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>
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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>
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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>
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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
...
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Change trace_remove_event_call(call) to return the error if this
call is active. This is what the callers assume but can't verify
outside of the tracing locks. Both trace_kprobe.c/trace_uprobe.c
need the additional changes, unregister_trace_probe() should abort
if trace_remove_event_call() fails.
The caller is going to free this call/file so we must ensure that
nobody can use them after trace_remove_event_call() succeeds.
debugfs should be fine after the previous changes and event_remove()
does TRACE_REG_UNREGISTER, but still there are 2 reasons why we need
the additional checks:
- There could be a perf_event(s) attached to this tp_event, so the
patch checks ->perf_refcount.
- TRACE_REG_UNREGISTER can be suppressed by FTRACE_EVENT_FL_SOFT_MODE,
so we simply check FTRACE_EVENT_FL_ENABLED protected by event_mutex.
Link: http://lkml.kernel.org/r/20130729175033.GB26284@redhat.com
Reviewed-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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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>
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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
|
|
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 e11538d1f03914eb92af5a1a378375c05ae8520c
3) test reverts 69a37beabf1f0a6705c08e879bdd5d82ff6486c4
e11538d1f03914eb92af5a1a378375c05ae8520c
In summary, netperf TCP_RR numbers improve by approximately 4%
after reverting 69a37beabf1f0a6705c08e879bdd5d82ff6486c4. When
69a37beabf1f0a6705c08e879bdd5d82ff6486c4 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 69a37beabf1f0a6705c08e879bdd5d82ff6486c4,
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
e11538d1f03914eb92af5a1a378375c05ae8520c)
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 69a37beabf1f0a6705c08e879bdd5d82ff6486c4
and e11538d1f03914eb92af5a1a378375c05ae8520c)
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
69a37beabf1f0a6705c08e879bdd5d82ff6486c4.
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>
|
|
Commit 18d627113b83 (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>
|
|
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
|
|
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
...
|
|
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
...
|
|
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
|
|
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>
|
|
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
|
|
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>
|
|
transform framework"
This reverts commits
67822649d7305caf3dd50ed46c27b99c94eff996
39761214eefc6b070f29402aa1165f24d789b3f7
0b95a7f85718adcbba36407ef88bba0a7379ed03
31d939625a9a20b1badd2d4e6bf6fd39fa523405
2d31e518a42828df7877bca23a958627d60408bc
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>
|
|
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
|
|
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>
|
|
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
|
|
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>
|
|
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
|
|
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>
|
|
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
...
|
|
Previously we tried to read data form ADC even before ADC sequencer
finished sampling. This led to wrong samples.
We now wait on ADC status register idle bit to be set.
Signed-off-by: Patil, Rachna <rachna@ti.com>
Signed-off-by: Zubair Lutfullah <zubair.lutfullah@gmail.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
|
|
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
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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()
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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
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When using more than one trigger consumer it can happen that multiple threads
perform a read-modify-update cycle on 'use_count' concurrently. This can cause
updates to be lost and use_count can get stuck at non-zero value, in which case
the IIO core assumes that at least one thread is still running and will wait for
it to finish before running any trigger handlers again. This effectively renders
the trigger disabled and a reboot is necessary before it can be used again. To
fix this make use_count an atomic variable. Also set it to the number of
consumers before starting the first consumer, otherwise it might happen that
use_count drops to 0 even though not all consumers have been run yet.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Tested-by: Denis Ciocca <denis.ciocca@st.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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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>
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