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linux-uconsole/drivers/devfreq
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Leonard Crestez b1d06da384 PM / devfreq: Lock devfreq in trans_stat_show 
commit 2abb0d5268 upstream.

There is no locking in this sysfs show function so stats printing can
race with a devfreq_update_status called as part of freq switching or
with initialization.

Also add an assert in devfreq_update_status to make it clear that lock
must be held by caller.

Fixes: 39688ce6fa ("PM / devfreq: account suspend/resume for stats")
Cc: stable@vger.kernel.org
Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17 20:35:03 +01:00
..
event PM / devfreq: exynos-ppmu: Delete an error message for a failed memory allocation in exynos_ppmu_probe() 2018-07-18 13:56:46 +09:00
devfreq-event.c PM / devfreq: Convert to using %pOF instead of full_name 2017-08-28 09:15:33 +09:00
devfreq.c PM / devfreq: Lock devfreq in trans_stat_show 2019-12-17 20:35:03 +01:00
exynos-bus.c PM / devfreq: exynos-bus: Correct clock enable sequence 2019-10-05 13:09:48 +02:00
governor.h PM / devfreq: Move private devfreq_update_stats() into devfreq 2017-08-28 10:22:27 +09:00
governor_passive.c PM / devfreq: passive: fix compiler warning 2019-10-05 13:09:59 +02:00
governor_performance.c PM / devfreq: Define the constant governor name 2017-10-26 17:08:40 +09:00
governor_powersave.c PM / devfreq: Define the constant governor name 2017-10-26 17:08:40 +09:00
governor_simpleondemand.c PM / devfreq: Define the constant governor name 2017-10-26 17:08:40 +09:00
governor_userspace.c PM / devfreq: Define the constant governor name 2017-10-26 17:08:40 +09:00
Kconfig PM / devfreq: Add dependency on PM_OPP 2017-08-28 10:23:57 +09:00
Makefile License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
rk3399_dmc.c PM / devfreq: rk3399_dmc: Fix duplicated opp table on reload. 2018-07-18 13:58:39 +09:00
tegra-devfreq.c PM / devfreq: tegra: Fix kHz to Hz conversion 2019-10-11 18:20:46 +02:00