Viresh Kumar e4d8ae0016 PM / OPP: Call notifier without holding opp_table->lock ... The notifier callbacks may want to call some OPP helper routines which may try to take the same opp_table->lock again and cause a deadlock. One such usecase was reported by Chanwoo Choi, where calling dev_pm_opp_disable() leads us to the devfreq's OPP notifier handler, which further calls dev_pm_opp_find_freq_floor() and it deadlocks. We don't really need the opp_table->lock to be held across the notifier call though, all we want to make sure is that the 'opp' doesn't get freed while being used from within the notifier chain. We can do it with help of dev_pm_opp_get/put() as well. Let's do it. Cc: 4.11+ <stable@vger.kernel.org> # 4.11+ Fixes: 5b650b3888 "PM / OPP: Take kref from _find_opp_table()" Reported-by: Chanwoo Choi <cw00.choi@samsung.com> Tested-by: Chanwoo Choi <cw00.choi@samsung.com> Reviewed-by: Stephen Boyd <sboyd@codeaurora.org> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>		2017-09-26 00:44:32 +02:00
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opp	PM / OPP: Call notifier without holding opp_table->lock	2017-09-26 00:44:32 +02:00
clock_ops.c	PM / clk: Add support for adding a specific clock from device-tree	2016-06-28 00:42:10 +02:00
common.c	PM: Avoid false-positive warnings in dev_pm_domain_set()	2016-02-03 19:10:37 +01:00
domain_governor.c	PM / Domains: Fix missing default_power_down_ok comment	2017-06-29 01:24:36 +02:00
domain.c	PM / Domains: Convert to using %pOF instead of full_name	2017-08-25 01:19:36 +02:00
generic_ops.c	PM / PCI / ACPI: Kick devices that might have been reset by firmware	2015-10-14 02:17:34 +02:00
main.c	PM: core: Fix device_pm_check_callbacks()	2017-09-19 22:58:27 +02:00
Makefile	PM / OPP: Move opp core to its own directory	2015-09-15 02:03:16 +02:00
power.h	Driver core patches for 4.10-rc1	2016-12-13 11:42:18 -08:00
qos.c	PM / QoS: Use the correct variable to check the QoS request type	2017-09-18 13:38:30 +02:00
runtime.c	sched/headers: Prepare to move the memalloc_noio_*() APIs to <linux/sched/mm.h>	2017-03-02 08:42:33 +01:00
sysfs.c	PM / QoS: return -EINVAL for bogus strings	2017-07-12 14:42:37 +02:00
trace.c	timekeeping: Ignore the bogus sleep time if pm_trace is enabled	2016-11-29 18:02:58 +01:00
wakeirq.c	PM / wakeirq: report a wakeup_event on dedicated wekup irq	2017-02-13 22:29:30 +01:00
wakeup.c	Merge branch 'pm-sleep'	2017-09-04 00:06:02 +02:00