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(parent: 4add3e7) | patch
PM: sleep: stats: Use locking in dpm_save_failed_dev()
authorRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 29 Jan 2024 16:24:30 +0000 (17:24 +0100)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Mon, 5 Feb 2024 13:28:54 +0000 (14:28 +0100)
commita6d38e991dc4f1b4a86137177435660df53951c5
treeae43827d9220c299951c4a5dfd2c697609ded4detree | snapshot
parent4add3e72f0fca0c66a8c9de8f58997eb9a3e3320commit | diff
PM: sleep: stats: Use locking in dpm_save_failed_dev()

Because dpm_save_failed_dev() may be called simultaneously by multiple
failing device PM functions, the state of the suspend_stats fields
updated by it may become inconsistent.

Prevent that from happening by using a lock in dpm_save_failed_dev().

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
kernel/power/main.c diff | blob | history
ep93xx device tree rework repo: git://git.maquefel.me/linux.git