diff options
Diffstat (limited to 'kernel/power')
| -rw-r--r-- | kernel/power/power.h | 4 | ||||
| -rw-r--r-- | kernel/power/suspend.c | 26 |
2 files changed, 17 insertions, 13 deletions
diff --git a/kernel/power/power.h b/kernel/power/power.h index 7fdc40d..6e3ac6a 100644 --- a/kernel/power/power.h +++ b/kernel/power/power.h @@ -245,7 +245,11 @@ enum { #define TEST_FIRST TEST_NONE #define TEST_MAX (__TEST_AFTER_LAST - 1) +#ifdef CONFIG_PM_DEBUG extern int pm_test_level; +#else +#define pm_test_level (TEST_NONE) +#endif #ifdef CONFIG_SUSPEND_FREEZER static inline int suspend_freeze_processes(void) diff --git a/kernel/power/suspend.c b/kernel/power/suspend.c index 18cdb15..0c61713 100644 --- a/kernel/power/suspend.c +++ b/kernel/power/suspend.c @@ -108,7 +108,13 @@ static void s2idle_loop(void) { pm_pr_dbg("suspend-to-idle\n"); - do { + while (!dpm_suspend_noirq(PMSG_SUSPEND)) { + /* + * Suspend-to-idle equals + * frozen processes + suspended devices + idle processors. + * Thus freeze_enter() should be called right after + * all devices have been suspended. + */ freeze_enter(); if (freeze_ops && freeze_ops->wake) @@ -122,7 +128,7 @@ static void s2idle_loop(void) break; pm_wakeup_clear(false); - } while (!dpm_suspend_noirq(PMSG_SUSPEND)); + } pm_pr_dbg("resume from suspend-to-idle\n"); } @@ -379,6 +385,11 @@ static int suspend_enter(suspend_state_t state, bool *wakeup) if (error) goto Devices_early_resume; + if (state == PM_SUSPEND_FREEZE && pm_test_level != TEST_PLATFORM) { + s2idle_loop(); + goto Platform_early_resume; + } + error = dpm_suspend_noirq(PMSG_SUSPEND); if (error) { pr_err("PM: noirq suspend of devices failed\n"); @@ -391,17 +402,6 @@ static int suspend_enter(suspend_state_t state, bool *wakeup) if (suspend_test(TEST_PLATFORM)) goto Platform_wake; - /* - * PM_SUSPEND_FREEZE equals - * frozen processes + suspended devices + idle processors. - * Thus we should invoke freeze_enter() soon after - * all the devices are suspended. - */ - if (state == PM_SUSPEND_FREEZE) { - s2idle_loop(); - goto Platform_early_resume; - } - error = disable_nonboot_cpus(); if (error || suspend_test(TEST_CPUS)) goto Enable_cpus; |
