[Intel-gfx] [PATCH 2/6] drm/i915: fix the FBC work allocation failure path

[Chris Wilson]

On Wed, Jul 08, 2015 at 05:58:55PM -0300, Paulo Zanoni wrote:
> From: Paulo Zanoni <paulo.r.zanoni at intel.com>
> 
> We were forgetting to set fbc.crtc, fbc.fb_id and fbc.y when the
> kzalloc call failed. Luckily, this is not a very common case, I hope.

That did not prepare me for the patch that lies ahead.

"Always update the currrent crtc, fb and vertical offset after calling
enable_fbc. We were forgetting to do so along the failure paths when
enabling fbc synchronously. Fix this with a new helper to enable_fbc()
and update the state simultaneously."
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre