drm/imx: imx-ldb: detach panel on unbind

Make sure to leave a clean panel state behind and allow to
properly attach to the panel again on a rebind.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>

diff --git a/drivers/gpu/drm/imx/imx-ldb.c b/drivers/gpu/drm/imx/imx-ldb.c
index 87b83bd..27a471c 100644 (file)
--- a/drivers/gpu/drm/imx/imx-ldb.c
+++ b/drivers/gpu/drm/imx/imx-ldb.c
@@ -757,6 +757,9 @@ static void imx_ldb_unbind(struct device *dev, struct device *master,
        for (i = 0; i < 2; i++) {
                struct imx_ldb_channel *channel = &imx_ldb->channel[i];
 
+               if (channel->panel)
+                       drm_panel_detach(channel->panel);
+
                kfree(channel->edid);
                i2c_put_adapter(channel->ddc);
        }