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| author | Thomas Gleixner <tglx@linutronix.de> | 2010-07-15 10:29:00 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-07-20 19:11:55 +0200 |
| commit | 60f778fcfc89524ece9fedbd8ae3eecd58adb221 (patch) | |
| tree | 660ed22258b6dc0fb593125de8115afcbf276d6c /include | |
| parent | 19491de1201af8b1a506b32387a875dfb3bec2f9 (diff) | |
| download | lwn-60f778fcfc89524ece9fedbd8ae3eecd58adb221.tar.gz lwn-60f778fcfc89524ece9fedbd8ae3eecd58adb221.zip | |
suspend: Prevent might sleep splats
timekeeping suspend/resume calls read_persistant_clock() which takes
rtc_lock. That results in might sleep warnings because at that point
we run with interrupts disabled.
We cannot convert rtc_lock to a raw spinlock as that would trigger
other might sleep warnings.
As a temporary workaround we disable the might sleep warnings by
setting system_state to SYSTEM_SUSPEND before calling sysdev_suspend()
and restoring it to SYSTEM_RUNNING afer sysdev_resume().
Needs to be revisited.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kernel.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/kernel.h b/include/linux/kernel.h index 45894a469a03..3f7145e8a1ae 100644 --- a/include/linux/kernel.h +++ b/include/linux/kernel.h @@ -326,7 +326,7 @@ extern enum system_states { SYSTEM_HALT, SYSTEM_POWER_OFF, SYSTEM_RESTART, - SYSTEM_SUSPEND_DISK, + SYSTEM_SUSPEND, } system_state; #define TAINT_PROPRIETARY_MODULE 0 |