drm/i915: catch gtfifo errors on forcewake_put

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This is similar to a patch I wrote several months ago. It's been updated
for the new FORCEWAKE_MT. As recommended by Chris Wilson, use WARN()
instead of DRM_ERROR, so we can get a backtrace.

This shouldn't impact performance too much as the extra register read
can replace the POSTING_READ we had previously.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Ben Widawsky 2012-02-09 10:15:19 +01:00 • committed by Daniel Vetter

parent dd202c6dd6

commit ee64cbdbf6

1 changed files with 13 additions and 2 deletions

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drivers/gpu/drm/i915/i915_drv.c

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