From: Jerome Glisse <jglisse@redhat.com>
Date: Fri, 15 Jan 2010 13:44:38 +0000 (+0100)
Subject: drm/radeon/kms: r600/r700 don't process IRQ if not initialized
X-Git-Tag: v2.6.33-rc6~27^2~6^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=79c2bbc505751bb5130ac753251fc9a0eb37bb12;p=pandora-kernel.git

drm/radeon/kms: r600/r700 don't process IRQ if not initialized

In some rare case the wptr returned from the hw wasn't 0 and leaded
to trick r600_process_irq that their were irq to process. Add a
check to bail out if irq hasn't been initialized this will avoid
oops provoqued by the rare wptr != 0 on initialization.

Signed-off-by: Jerome Glisse <jglisse@redhat.com>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
Signed-off-by: Dave Airlie <airlied@linux.ie>
---

Reading git-diff-tree failed