Displaying 3 results from an estimated 3 matches for "no_dsm".
2016 May 30
3
[PATCH 4/4] drm/nouveau/acpi: fix lockup with PCIe runtime PM
...below seems exceptional.
>
> I suggested the no_d3cold check such that DSM can still be called even
> though the runtime PM on the PCIe port does nothing.
Somehow it does not feel right to poke parent device's fields directly.
What if you just check if it has the method like:
bool no_dsm = acpi_has_method(parent_adev->handle, "_PR3");
That should follow what Windows is doing.
> > > Out of curiosity I looked up an pre-2015 laptop (found Acer V5-573G,
> > > apparently from November 2013, Windows 8.1) and extracted the ACPI
> > > tables from t...
2016 May 30
0
[PATCH 4/4] drm/nouveau/acpi: fix lockup with PCIe runtime PM
...I suggested the no_d3cold check such that DSM can still be called even
> > though the runtime PM on the PCIe port does nothing.
>
> Somehow it does not feel right to poke parent device's fields directly.
>
> What if you just check if it has the method like:
>
> bool no_dsm = acpi_has_method(parent_adev->handle, "_PR3");
>
> That should follow what Windows is doing.
Checking for _PR3 was the intention, but it seems that the ACPI core
does not really store it somewhere. Your check should be simple enough,
I'll use that in the next version.
Do...
2016 May 30
2
[PATCH 4/4] drm/nouveau/acpi: fix lockup with PCIe runtime PM
+Rafael
On Fri, May 27, 2016 at 01:10:37PM +0200, Peter Wu wrote:
> On Wed, May 25, 2016 at 04:55:35PM +0300, Mika Westerberg wrote:
> > On Wed, May 25, 2016 at 12:53:01AM +0200, Peter Wu wrote:
> > > Since "PCI: Add runtime PM support for PCIe ports", the parent PCIe port
> > > can be runtime-suspended which disables power resources via ACPI. This
> >