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Diffstat (limited to 'kernel/power/suspend.c')
-rw-r--r--kernel/power/suspend.c27
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());