On Sun, Apr 01, 2012 at 02:28:57PM +0800, Lin Ming wrote: > > > > There is no D3 hot support for this device(from the firmware's > > perspective), either it is at D0(via _PS0), or it will be at D3 cold(via > > _PS3). > > But this is the generic code. We can't only consider some special > device. Agree. The code change I've made only affects D3 cold path, existing code path to set device power state to D0-D3hot is not affected. And for D3 cold path, I don't think evaluating _PS3 should do any harm to the device, isn't it the case? > > Maybe we need some flag to tell which D3 state _PS3 is used for. Do you mean the ACPI spec needs to be updated to reflect which D3 state the device will be at once its _PS3 is evaluated? -Aaron -- 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