Messages in this thread | | | Date | Sun, 1 Apr 2012 22:41:25 +0800 | From | Aaron Lu <> | Subject | Re: [PATCH] ACPI: evaluate _PS3 when entering D3 Cold |
| |
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
| |