drm: use format %d to print error code
authorYuanhan Liu <yuanhan.liu@linux.intel.com>
Sat, 16 Jun 2012 14:25:24 +0000 (22:25 +0800)
committerDave Airlie <airlied@redhat.com>
Thu, 21 Jun 2012 08:34:42 +0000 (09:34 +0100)
It is more readable by printing "ret = -1" than "ret = 0xffffffff"

Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

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