From 1139ffb96b3f4e8be9006552d2dd4d302d62c2ee Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 23 Jan 2014 10:49:47 +1000
Subject: [PATCH] drm/nouveau: call drm_vblank_cleanup() earlier

Fixes a NULL-ptr deref seen on module unload sometimes.

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