From: Ben Skeggs <bskeggs@redhat.com>
Date: Wed, 8 Sep 2010 05:40:30 +0000 (+1000)
Subject: drm/nouveau: handle fifo pusher errors better
X-Git-Tag: v2.6.37-rc1~92^2~25^2~56
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e071f8cd714261cb4f5ce7104eb54b16b2bbb0cf;p=pandora-kernel.git

drm/nouveau: handle fifo pusher errors better

The most important part of this change is that we now instruct PFIFO to
drop all pending fetches, rather than attempting to skip a single dword
and hope that things would magically sort themselves out - they usually
don't, and we end up with PFIFO being completely hung.

This commit also adds somewhat more useful logging when these exceptions
occur.

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