From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 13 May 2013 11:13:15 +0000 (+1000)
Subject: drm/nv50-/vm: take mutex rather than irqsave spinlock
X-Git-Tag: v3.11-rc1~65^2~23^2~27
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca97a36698ca3f76d3cee542e69dcf1b66210b0c;p=pandora-kernel.git

drm/nv50-/vm: take mutex rather than irqsave spinlock

These operations can take quite some time, and we really don't want to
have to hold a spinlock for too long.

Now that the lock ordering for vm and the gr/nv84 hw bug workaround has
been reversed, it's possible to use a mutex here.

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