Hi, All the following are two patches about the power resource driver. Patch 1/2: Cleanup in power resource The state is changed to *state in the function of acpi_power_get_state. Patch 2/2: delete the strick check in ACPI power transisition Maybe the device is already in D3 state and expected to be transited to D3 state. As there is no _PR3 object, the power transition can't be finished and it will be switched to the Unknow state. For example: http://bugzilla.kernel.org/show_bug.cgi?id=9485 Maybe it is more reasonable that the strick check in power transistion is deleted. Welcome the comments. Best regards. Yakui -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html