4.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Daniel Vetter <daniel.vetter@xxxxxxxx> [ Upstream commit ae9d2daecf086958a41ad216152ec208d70ba325 ] fsl is already fully demidlayered in the probe function, but for convenience stuck with drm_put_dev. Call the unregister/unref parts separately, to make sure this driver works correct. Cc: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> Cc: CK Hu <ck.hu@xxxxxxxxxxxx> Reviewed-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx> Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx> Link: http://patchwork.freedesktop.org/patch/msgid/20161208110739.24417-3-daniel.vetter@xxxxxxxx Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- drivers/gpu/drm/mediatek/mtk_drm_drv.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -321,7 +321,8 @@ static void mtk_drm_unbind(struct device { struct mtk_drm_private *private = dev_get_drvdata(dev); - drm_put_dev(private->drm); + drm_dev_unregister(private->drm); + drm_dev_unref(private->drm); private->drm = NULL; }