From: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
If acpi_device_sleep_wake() called by acpi_enable_wakeup_device_power()
returns an error which means that the evaluation of either _DWS or
_PSW has failed, turn off all of the device's wakeup power resources
to be consistent with the clearing of dev->wakeup.prepare_count.
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
---
drivers/acpi/power.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Index: linux-pm/drivers/acpi/power.c
===================================================================
--- linux-pm.orig/drivers/acpi/power.c
+++ linux-pm/drivers/acpi/power.c
@@ -731,8 +731,10 @@ int acpi_enable_wakeup_device_power(stru
* put into arbitrary power state afterward.
*/
err = acpi_device_sleep_wake(dev, 1, sleep_state, 3);
- if (err)
+ if (err) {
+ acpi_power_off_list(&dev->wakeup.resources);
dev->wakeup.prepare_count = 0;
+ }
out:
mutex_unlock(&acpi_device_lock);
