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Diffstat (limited to 'kernel/power/disk.c')
-rw-r--r--kernel/power/disk.c39
1 files changed, 29 insertions, 10 deletions
diff --git a/kernel/power/disk.c b/kernel/power/disk.c
index 4a4a206b197..320bb0949bd 100644
--- a/kernel/power/disk.c
+++ b/kernel/power/disk.c
@@ -214,7 +214,7 @@ static int create_image(int platform_mode)
return error;
device_pm_lock();
- local_irq_disable();
+
/* At this point, device_suspend() has been called, but *not*
* device_power_down(). We *must* call device_power_down() now.
* Otherwise, drivers for some devices (e.g. interrupt controllers)
@@ -225,8 +225,11 @@ static int create_image(int platform_mode)
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
"aborting hibernation\n");
- goto Enable_irqs;
+ goto Unlock;
}
+
+ local_irq_disable();
+
sysdev_suspend(PMSG_FREEZE);
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
@@ -252,12 +255,16 @@ static int create_image(int platform_mode)
/* NOTE: device_power_up() is just a resume() for devices
* that suspended with irqs off ... no overall powerup.
*/
+
Power_up_devices:
+ local_irq_enable();
+
device_power_up(in_suspend ?
(error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
- Enable_irqs:
- local_irq_enable();
+
+ Unlock:
device_pm_unlock();
+
return error;
}
@@ -336,13 +343,16 @@ static int resume_target_kernel(void)
int error;
device_pm_lock();
- local_irq_disable();
+
error = device_power_down(PMSG_QUIESCE);
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
"aborting resume\n");
- goto Enable_irqs;
+ goto Unlock;
}
+
+ local_irq_disable();
+
sysdev_suspend(PMSG_QUIESCE);
/* We'll ignore saved state, but this gets preempt count (etc) right */
save_processor_state();
@@ -366,11 +376,16 @@ static int resume_target_kernel(void)
swsusp_free();
restore_processor_state();
touch_softlockup_watchdog();
+
sysdev_resume();
- device_power_up(PMSG_RECOVER);
- Enable_irqs:
+
local_irq_enable();
+
+ device_power_up(PMSG_RECOVER);
+
+ Unlock:
device_pm_unlock();
+
return error;
}
@@ -447,15 +462,16 @@ int hibernation_platform_enter(void)
goto Finish;
device_pm_lock();
- local_irq_disable();
+
error = device_power_down(PMSG_HIBERNATE);
if (!error) {
+ local_irq_disable();
sysdev_suspend(PMSG_HIBERNATE);
hibernation_ops->enter();
/* We should never get here */
while (1);
}
- local_irq_enable();
+
device_pm_unlock();
/*
@@ -464,12 +480,15 @@ int hibernation_platform_enter(void)
*/
Finish:
hibernation_ops->finish();
+
Resume_devices:
entering_platform_hibernation = false;
device_resume(PMSG_RESTORE);
resume_console();
+
Close:
hibernation_ops->end();
+
return error;
}