[Intel-gfx] [PATCH v2] drm/i915: Avoid GPU hang when coming out of S3 or S4

[Chris Wilson]

On Tue, Apr 28, 2015 at 08:18:14AM +0100, Peter Antoine wrote:
> This patch fixed a timing issue that causes a GPU hang when a the system
> comes out of power saving.
> 
> During pm_resume, We are submitting batchbuffers before enabling Interrupts
> this is causing us to miss the context switch interrupt, and in consequence
> intel_execlists_handle_ctx_events is not triggered.

Ah. Thanks. How about a code comment? :)

But that doesn't explain moving init_hw...
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre