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drm/nv50: prevent (IB_PUT == IB_GET) for occurring unless idle
authorBen Skeggs <bskeggs@redhat.com>
Wed, 29 Sep 2010 23:09:42 +0000 (09:09 +1000)
committerBen Skeggs <bskeggs@redhat.com>
Mon, 4 Oct 2010 23:58:47 +0000 (09:58 +1000)
Should fix a DMA race condition I've never seen myself, but could be
the culprit in some random hangs that have been reported.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>

No differences found
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