From: Marcin Slusarz <marcin.slusarz@gmail.com>
Date: Fri, 5 Oct 2012 10:26:32 +0000 (+0200)
Subject: drm/nouveau: handle same-fb page flips
X-Git-Tag: v3.7-rc3~45^2~6^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2c14575f99ddd5b8384c5b460687ceba181900d8;p=pandora-kernel.git

drm/nouveau: handle same-fb page flips

It's questionable use case, but weston/wayland already relies on this
behaviour, and other drivers don't care about it, so it's a matter of
compatibility.  Without it, process invoking such page flip hangs in
unkillable state, trying to reserve the same buffer twice.

Signed-off-by: Marcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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