Stephen Boyd 40fea92ffb PM / QoS: Fix workqueue deadlock when using pm_qos_update_request_timeout() ... pm_qos_update_request_timeout() updates a qos and then schedules a delayed work item to bring the qos back down to the default after the timeout. When the work item runs, pm_qos_work_fn() will call pm_qos_update_request() and deadlock because it tries to cancel itself via cancel_delayed_work_sync(). Future callers of that qos will also hang waiting to cancel the work that is canceling itself. Let's extract the little bit of code that does the real work of pm_qos_update_request() and call it from the work function so that we don't deadlock. Before ed1ac6e (PM: don't use [delayed_]work_pending()) this didn't happen because the work function wouldn't try to cancel itself. Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Tejun Heo <tj@kernel.org> Cc: 3.9+ <stable@vger.kernel.org> # 3.9+ Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2013-08-14 00:42:05 +02:00
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autosleep.c	PM / Sleep: avoid 'autosleep' in shutdown progress	2013-07-15 01:31:37 +02:00
block_io.c
console.c
hibernate.c
Kconfig	Merge branch 'for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2013-07-02 19:53:30 -07:00
main.c	PM / Sleep: Warn about system time after resume with pm_trace	2013-06-27 22:14:46 +02:00
Makefile
power.h
poweroff.c
process.c	freezer: set PF_SUSPEND_TASK flag on tasks that call freeze_processes	2013-07-30 14:05:06 +02:00
qos.c	PM / QoS: Fix workqueue deadlock when using pm_qos_update_request_timeout()	2013-08-14 00:42:05 +02:00
snapshot.c	Merge branch 'akpm' (updates from Andrew Morton)	2013-07-03 17:12:13 -07:00
suspend_test.c
suspend.c	PM / wakeup: Adjust messaging for wake events during suspend	2013-06-11 23:53:37 +02:00
swap.c
user.c
wakelock.c