static int noresume = 0;
-char resume_file[256] = CONFIG_PM_STD_PARTITION;
+static char resume_file[256] = CONFIG_PM_STD_PARTITION;
dev_t swsusp_resume_device;
sector_t swsusp_resume_block;
hibernation_ops->restore_cleanup();
}
+/**
+ * platform_recover - recover the platform from a failure to suspend
+ * devices.
+ */
+
+static void platform_recover(int platform_mode)
+{
+ if (platform_mode && hibernation_ops && hibernation_ops->recover)
+ hibernation_ops->recover();
+}
+
/**
* create_image - freeze devices that need to be frozen with interrupts
* off, create the hibernation image and thaw those devices. Control
* reappears in this routine after a restore.
*/
-int create_image(int platform_mode)
+static int create_image(int platform_mode)
{
int error;
if (error)
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.
/* NOTE: device_power_up() is just a resume() for devices
* that suspended with irqs off ... no overall powerup.
*/
- device_power_up();
+ device_power_up(in_suspend ?
+ (error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
Enable_irqs:
local_irq_enable();
+ device_pm_unlock();
return error;
}
suspend_console();
error = device_suspend(PMSG_FREEZE);
if (error)
- goto Resume_console;
+ goto Recover_platform;
if (hibernation_test(TEST_DEVICES))
- goto Resume_devices;
+ goto Recover_platform;
error = platform_pre_snapshot(platform_mode);
if (error || hibernation_test(TEST_PLATFORM))
Finish:
platform_finish(platform_mode);
Resume_devices:
- device_resume();
- Resume_console:
+ device_resume(in_suspend ?
+ (error ? PMSG_RECOVER : PMSG_THAW) : PMSG_RESTORE);
resume_console();
Close:
platform_end(platform_mode);
return error;
+
+ Recover_platform:
+ platform_recover(platform_mode);
+ goto Resume_devices;
}
/**
{
int error;
+ device_pm_lock();
local_irq_disable();
- error = device_power_down(PMSG_PRETHAW);
+ error = device_power_down(PMSG_QUIESCE);
if (error) {
printk(KERN_ERR "PM: Some devices failed to power down, "
"aborting resume\n");
swsusp_free();
restore_processor_state();
touch_softlockup_watchdog();
- device_power_up();
+ device_power_up(PMSG_RECOVER);
Enable_irqs:
local_irq_enable();
+ device_pm_unlock();
return error;
}
pm_prepare_console();
suspend_console();
- error = device_suspend(PMSG_PRETHAW);
+ error = device_suspend(PMSG_QUIESCE);
if (error)
goto Finish;
enable_nonboot_cpus();
}
platform_restore_cleanup(platform_mode);
- device_resume();
+ device_resume(PMSG_RECOVER);
Finish:
resume_console();
pm_restore_console();
goto Close;
suspend_console();
- error = device_suspend(PMSG_SUSPEND);
- if (error)
- goto Resume_console;
+ error = device_suspend(PMSG_HIBERNATE);
+ if (error) {
+ if (hibernation_ops->recover)
+ hibernation_ops->recover();
+ goto Resume_devices;
+ }
error = hibernation_ops->prepare();
if (error)
if (error)
goto Finish;
+ device_pm_lock();
local_irq_disable();
- error = device_power_down(PMSG_SUSPEND);
+ error = device_power_down(PMSG_HIBERNATE);
if (!error) {
hibernation_ops->enter();
/* We should never get here */
while (1);
}
local_irq_enable();
+ device_pm_unlock();
/*
* We don't need to reenable the nonboot CPUs or resume consoles, since
Finish:
hibernation_ops->finish();
Resume_devices:
- device_resume();
- Resume_console:
+ device_resume(PMSG_RESTORE);
resume_console();
Close:
hibernation_ops->end();
while(1);
}
-static void unprepare_processes(void)
-{
- thaw_processes();
- pm_restore_console();
-}
-
static int prepare_processes(void)
{
int error = 0;
- pm_prepare_console();
if (freeze_processes()) {
error = -EBUSY;
- unprepare_processes();
+ thaw_processes();
}
return error;
}
goto Unlock;
}
+ pm_prepare_console();
error = pm_notifier_call_chain(PM_HIBERNATION_PREPARE);
if (error)
goto Exit;
swsusp_free();
}
Thaw:
- unprepare_processes();
+ thaw_processes();
Finish:
free_basic_memory_bitmaps();
Exit:
pm_notifier_call_chain(PM_POST_HIBERNATION);
+ pm_restore_console();
atomic_inc(&snapshot_device_available);
Unlock:
mutex_unlock(&pm_mutex);
goto Unlock;
}
+ pm_prepare_console();
error = pm_notifier_call_chain(PM_RESTORE_PREPARE);
if (error)
goto Finish;
printk(KERN_ERR "PM: Restore failed, recovering.\n");
swsusp_free();
- unprepare_processes();
+ thaw_processes();
Done:
free_basic_memory_bitmaps();
Finish:
pm_notifier_call_chain(PM_POST_RESTORE);
+ pm_restore_console();
atomic_inc(&snapshot_device_available);
/* For success case, the suspend path will release the lock */
Unlock: