From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 7 Mar 2011 07:18:04 +0000 (+1000)
Subject: drm/nv50-nvc0: prevent multiple vm/bar flushes occuring simultanenously
X-Git-Tag: v2.6.38-rc8~4^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6f70a4c3d19e8e8e1047a4dbf0ca910fed39f619;p=pandora-kernel.git

drm/nv50-nvc0: prevent multiple vm/bar flushes occuring simultanenously

The per-vm mutex doesn't prevent this completely, a flush coming from the
BAR VM could potentially happen at the same time as one for the channel
VM.  Not to mention that if/when we get per-client/channel VM, this will
happen far more frequently.

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