Vincent Guittot 74fb448630 PM-runtime: Fix deadlock when canceling hrtimer ... When rpm_resume() desactivates the autosuspend timer, it should only try to cancel hrtimer but not wait for the handler to finish, because both rpm_resume() and pm_suspend_timer_fn() take the power.lock. A deadlock is possible as follows: CPU0 CPU1 rpm_resume() spin_lock_irqsave pm_suspend_timer_fn() spin_lock_irqsave pm_runtime_deactivate_timer() hrtimer_cancel() It is sufficient to call hrtimer_try_to_cancel() from pm_runtime_deactivate_timer(), because dev->power.timer_expires reset to 0 by it, so use that function instead of hrtimer_cancel(). Fixes: 8234f6734c ("PM-runtime: Switch autosuspend over to using hrtimers") Reported-by: Sunzhaosheng Sun(Zhaosheng) <sunzhaosheng@hisilicon.com> Signed-off-by: Vincent Guittot <vincent.guittot@linaro.org> [ rjw: Changelog ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2019-02-21 10:29:00 +01:00
..
clock_ops.c	PM / clk: signedness bug in of_pm_clk_add_clks()	2018-08-24 11:52:34 +02:00
common.c	PM / Domains: Introduce dev_pm_domain_attach_by_name()	2018-07-09 12:11:02 +02:00
domain_governor.c
domain.c	Merge branches 'pm-core', 'pm-qos', 'pm-domains' and 'pm-sleep'	2018-12-21 10:06:44 +01:00
generic_ops.c
main.c	PM: sleep: call devfreq suspend/resume	2019-01-02 23:07:41 +01:00
Makefile
power.h	PM / core: Drop unused internal inline functions for sysfs	2018-05-10 11:55:12 +02:00
qos.c
runtime.c	PM-runtime: Fix deadlock when canceling hrtimer	2019-02-21 10:29:00 +01:00
sysfs.c	PM / wakeup: Export wakeup_count instead of event_count via sysfs	2018-06-06 09:23:36 +02:00
trace.c	PM: Switch to use %ptR	2018-12-10 22:40:18 +01:00
wakeirq.c	PM / wakeirq: Add wakeup name to dedicated wake irqs	2018-02-26 23:23:37 +01:00
wakeup.c	Merge branches 'pm-pci', 'acpi-pm', 'pm-sleep' and 'pm-avs'	2018-06-04 10:41:53 +02:00