[PATCH v2 4/4] drm/nouveau/acpi: fix lockup with PCIe runtime PM

2016-07-08 Thread Mika Westerberg
On Fri, Jul 08, 2016 at 01:38:27AM +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 > is incompatible with DSM, resulting in a GPU device which is still in D3 > and locks up

[PATCH v2 4/4] drm/nouveau/acpi: fix lockup with PCIe runtime PM

2016-07-08 Thread Peter Wu
Since "PCI: Add runtime PM support for PCIe ports", the parent PCIe port can be runtime-suspended which disables power resources via ACPI. This is incompatible with DSM, resulting in a GPU device which is still in D3 and locks up the kernel on resume (on a Clevo P651RA, GTX965M). Mirror the