From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Mon, 29 Aug 2011 16:45:28 +0000 (-0700)
Subject: drm/i915: don't set unpin_work if vblank_get fails
X-Git-Tag: v3.2-rc6~5^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7317c75e66fce0c9f82fbe6f72f7e5256b315422;p=pandora-kernel.git

drm/i915: don't set unpin_work if vblank_get fails

This fixes a race where we may try to finish a page flip and decrement
the refcount even if our vblank_get failed and we ended up with a
spurious flip pending interrupt.

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=34211.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Keith Packard <keithp@keithp.com>
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