[Intel-gfx] [PATCH] drm/i915: Ensure proper HDA suspend/resume ordering with a device link

Imre Deak imre.deak at intel.com
Mon Oct 22 10:24:00 UTC 2018


On Sat, Oct 20, 2018 at 07:59:09AM +0200, Lukas Wunner wrote:
> On Thu, Oct 18, 2018 at 05:25:58PM +0300, Imre Deak wrote:
> > In order to ensure that our system suspend and resume callbacks are
> > called in the correct order wrt. those of the HDA driver add a device
> > link to the HDA driver during audio component binding time. With i915 as
> > the supplier and HDA as the consumer the PM framework will guarantee
> > the HDA->i915 suspend (and shutdown) and i915->HDA resume order.
> 
> Thanks for doing this.  Can you also revert 7b3b61b62a58 ("drm/todo:
> i915 could use device_link_add") while at it?

Thanks, will update that once this gets merged and we get some testing
coverage.

--Imre


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