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authorPingfan Liu <kernelfans@gmail.com>2018-07-31 11:51:32 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-08-06 13:35:20 +0300
commit55f2503c3b69328735e88031ff8d6ba291bd952b (patch)
treec89f476f4866d1e3ee11aa8b8601c68a23e3b025 /include/linux/suspend.h
parent82837ad5bda79cd13d64b9abad92e7872a06bc65 (diff)
downloadlinux-55f2503c3b69328735e88031ff8d6ba291bd952b.tar.xz
PM / reboot: Eliminate race between reboot and suspend
At present, "systemctl suspend" and "shutdown" can run in parrallel. A system can suspend after devices_shutdown(), and resume. Then the shutdown task goes on to power off. This causes many devices are not really shut off. Hence replacing reboot_mutex with system_transition_mutex (renamed from pm_mutex) to achieve the exclusion. The renaming of pm_mutex as system_transition_mutex can be better to reflect the purpose of the mutex. Signed-off-by: Pingfan Liu <kernelfans@gmail.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/linux/suspend.h')
-rw-r--r--include/linux/suspend.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 440b62f7502e..5a28ac9284f0 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -414,7 +414,7 @@ static inline bool hibernation_available(void) { return false; }
#define PM_RESTORE_PREPARE 0x0005 /* Going to restore a saved image */
#define PM_POST_RESTORE 0x0006 /* Restore failed */
-extern struct mutex pm_mutex;
+extern struct mutex system_transition_mutex;
#ifdef CONFIG_PM_SLEEP
void save_processor_state(void);