ACPI: ThinkPad Z60m: usb mouse stops working after suspend to RAM

(http://www.mail-archive.com/[e-mail]/msg05270.html):

References : http://lkml.org/lkml/2007/2/21/413
http://lkml.org/lkml/2007/2/28/172
Submitter : Arkadiusz Miskiewicz <[e-mail]>
Caused-By : Konstantin Karasyov <[e-mail]>
commit 0a6139027f3986162233adc17285151e78b39cac

Do not disable power resources on resume even if there are no devices referencing it.

Signed-off-by: Konstantin Karasyov <[e-mail]>
Signed-off-by: Len Brown <[e-mail]>

drivers/acpi/power.c

···
 		return result;
 
 	mutex_lock(&resource->resource_lock);
-	if ((resource->state == ACPI_POWER_RESOURCE_STATE_ON) &&
-	    list_empty(&resource->reference)) {
-		mutex_unlock(&resource->resource_lock);
-		result = acpi_power_off_device(device->handle, NULL);
-		return result;
-	}
-
 	if ((resource->state == ACPI_POWER_RESOURCE_STATE_OFF) &&
 	    !list_empty(&resource->reference)) {
 		ref = container_of(resource->reference.next, struct acpi_power_reference, node);