drm/i915/ringbuffer: Ignore failure to setup the ring on Sandybridge

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The ring buffer registers return 0 whilst idle (for some values of idle)
on early Sandybridge hw. Persevere even when all appears hopeless...
Fortunately the head auto-reporting prevents most hangs.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31370
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

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Chris Wilson 2010-11-07 11:50:02 +00:00

parent ae69b42a10

commit 629e894173

1 changed files with 24 additions and 8 deletions

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32

drivers/gpu/drm/i915/intel_ringbuffer.c

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