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| author | Sebastian Andrzej Siewior <bigeasy@linutronix.de> | 2018-05-25 11:46:48 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2018-05-27 11:55:02 +0200 |
| commit | 62fc00a6611a0014c85763f9def1fc07c15d1302 (patch) | |
| tree | f449a841bb53e2f9889219cf743f6d82943191e3 /kernel/power | |
| parent | PM / s2idle: Make s2idle_wait_head swait based (diff) | |
| download | linux-62fc00a6611a0014c85763f9def1fc07c15d1302.tar.xz linux-62fc00a6611a0014c85763f9def1fc07c15d1302.zip | |
PM / wakeup: Make s2idle_lock a RAW_SPINLOCK
The `s2idle_lock' is acquired during suspend while interrupts are
disabled even on RT. The lock is acquired for short sections only.
Make it a RAW lock which avoids "sleeping while atomic" warnings on RT.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/suspend.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 1020f597ff14..87331565e505 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -61,7 +61,7 @@ static const struct platform_s2idle_ops *s2idle_ops; static DECLARE_SWAIT_QUEUE_HEAD(s2idle_wait_head); enum s2idle_states __read_mostly s2idle_state; -static DEFINE_SPINLOCK(s2idle_lock); +static DEFINE_RAW_SPINLOCK(s2idle_lock); void s2idle_set_ops(const struct platform_s2idle_ops *ops) { @@ -79,12 +79,12 @@ static void s2idle_enter(void) { trace_suspend_resume(TPS("machine_suspend"), PM_SUSPEND_TO_IDLE, true); - spin_lock_irq(&s2idle_lock); + raw_spin_lock_irq(&s2idle_lock); if (pm_wakeup_pending()) goto out; s2idle_state = S2IDLE_STATE_ENTER; - spin_unlock_irq(&s2idle_lock); + raw_spin_unlock_irq(&s2idle_lock); get_online_cpus(); cpuidle_resume(); @@ -98,11 +98,11 @@ static void s2idle_enter(void) cpuidle_pause(); put_online_cpus(); - spin_lock_irq(&s2idle_lock); + raw_spin_lock_irq(&s2idle_lock); out: s2idle_state = S2IDLE_STATE_NONE; - spin_unlock_irq(&s2idle_lock); + raw_spin_unlock_irq(&s2idle_lock); trace_suspend_resume(TPS("machine_suspend"), PM_SUSPEND_TO_IDLE, false); } @@ -157,12 +157,12 @@ void s2idle_wake(void) { unsigned long flags; - spin_lock_irqsave(&s2idle_lock, flags); + raw_spin_lock_irqsave(&s2idle_lock, flags); if (s2idle_state > S2IDLE_STATE_NONE) { s2idle_state = S2IDLE_STATE_WAKE; swake_up(&s2idle_wait_head); } - spin_unlock_irqrestore(&s2idle_lock, flags); + raw_spin_unlock_irqrestore(&s2idle_lock, flags); } EXPORT_SYMBOL_GPL(s2idle_wake); |