diff options
Diffstat (limited to 'kernel/power/suspend.c')
| -rw-r--r-- | kernel/power/suspend.c | 27 |
1 files changed, 16 insertions, 11 deletions
diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 4c10be0f4843..87331565e505 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -27,6 +27,7 @@ #include <linux/export.h> #include <linux/suspend.h> #include <linux/syscore_ops.h> +#include <linux/swait.h> #include <linux/ftrace.h> #include <trace/events/power.h> #include <linux/compiler.h> @@ -57,10 +58,10 @@ EXPORT_SYMBOL_GPL(pm_suspend_global_flags); static const struct platform_suspend_ops *suspend_ops; static const struct platform_s2idle_ops *s2idle_ops; -static DECLARE_WAIT_QUEUE_HEAD(s2idle_wait_head); +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) { @@ -78,12 +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(); @@ -91,17 +92,17 @@ static void s2idle_enter(void) /* Push all the CPUs into the idle loop. */ wake_up_all_idle_cpus(); /* Make the current CPU wait so it can enter the idle loop too. */ - wait_event(s2idle_wait_head, - s2idle_state == S2IDLE_STATE_WAKE); + swait_event(s2idle_wait_head, + s2idle_state == S2IDLE_STATE_WAKE); 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); } @@ -156,12 +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; - wake_up(&s2idle_wait_head); + swake_up(&s2idle_wait_head); } - spin_unlock_irqrestore(&s2idle_lock, flags); + raw_spin_unlock_irqrestore(&s2idle_lock, flags); } EXPORT_SYMBOL_GPL(s2idle_wake); @@ -428,6 +429,8 @@ static int suspend_enter(suspend_state_t state, bool *wakeup) arch_suspend_disable_irqs(); BUG_ON(!irqs_disabled()); + system_state = SYSTEM_SUSPEND; + error = syscore_suspend(); if (!error) { *wakeup = pm_wakeup_pending(); @@ -443,6 +446,8 @@ static int suspend_enter(suspend_state_t state, bool *wakeup) syscore_resume(); } + system_state = SYSTEM_RUNNING; + arch_suspend_enable_irqs(); BUG_ON(irqs_disabled()); |