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Diffstat (limited to 'kernel/power/main.c')
-rw-r--r--kernel/power/main.c55
1 files changed, 33 insertions, 22 deletions
diff --git a/kernel/power/main.c b/kernel/power/main.c
index c9632f841f6..f172f41858b 100644
--- a/kernel/power/main.c
+++ b/kernel/power/main.c
@@ -287,17 +287,32 @@ void __attribute__ ((weak)) arch_suspend_enable_irqs(void)
*/
static int suspend_enter(suspend_state_t state)
{
- int error = 0;
+ int error;
device_pm_lock();
- arch_suspend_disable_irqs();
- BUG_ON(!irqs_disabled());
- if ((error = device_power_down(PMSG_SUSPEND))) {
+ error = device_power_down(PMSG_SUSPEND);
+ if (error) {
printk(KERN_ERR "PM: Some devices failed to power down\n");
goto Done;
}
+ if (suspend_ops->prepare) {
+ error = suspend_ops->prepare();
+ if (error)
+ goto Power_up_devices;
+ }
+
+ if (suspend_test(TEST_PLATFORM))
+ goto Platfrom_finish;
+
+ error = disable_nonboot_cpus();
+ if (error || suspend_test(TEST_CPUS))
+ goto Enable_cpus;
+
+ arch_suspend_disable_irqs();
+ BUG_ON(!irqs_disabled());
+
error = sysdev_suspend(PMSG_SUSPEND);
if (!error) {
if (!suspend_test(TEST_CORE))
@@ -305,11 +320,22 @@ static int suspend_enter(suspend_state_t state)
sysdev_resume();
}
- device_power_up(PMSG_RESUME);
- Done:
arch_suspend_enable_irqs();
BUG_ON(irqs_disabled());
+
+ Enable_cpus:
+ enable_nonboot_cpus();
+
+ Platfrom_finish:
+ if (suspend_ops->finish)
+ suspend_ops->finish();
+
+ Power_up_devices:
+ device_power_up(PMSG_RESUME);
+
+ Done:
device_pm_unlock();
+
return error;
}
@@ -341,23 +367,8 @@ int suspend_devices_and_enter(suspend_state_t state)
if (suspend_test(TEST_DEVICES))
goto Recover_platform;
- if (suspend_ops->prepare) {
- error = suspend_ops->prepare();
- if (error)
- goto Resume_devices;
- }
-
- if (suspend_test(TEST_PLATFORM))
- goto Finish;
-
- error = disable_nonboot_cpus();
- if (!error && !suspend_test(TEST_CPUS))
- suspend_enter(state);
+ suspend_enter(state);
- enable_nonboot_cpus();
- Finish:
- if (suspend_ops->finish)
- suspend_ops->finish();
Resume_devices:
suspend_test_start();
device_resume(PMSG_RESUME);