drm: use format %d to print error code
It is more readable by printing "ret = -1" than "ret = 0xffffffff" Signed-off-by: NYuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: NDave Airlie <airlied@redhat.com>
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It is more readable by printing "ret = -1" than "ret = 0xffffffff" Signed-off-by: NYuanhan Liu <yuanhan.liu@linux.intel.com> Signed-off-by: NDave Airlie <airlied@redhat.com>