OMAP: DSS2: Fix crash when panel doesn't define enable_te()

DSI driver didn't check if the panel driver actually implements
enable_te().

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>

diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c
index 03f85df..e32a53c 100644 (file)
--- a/drivers/video/omap2/dss/dsi.c
+++ b/drivers/video/omap2/dss/dsi.c
@@ -2932,11 +2932,15 @@ static int dsi_set_update_mode(struct omap_dss_device *dssdev,
 
 static int dsi_set_te(struct omap_dss_device *dssdev, bool enable)
 {
-       int r;
-       r = dssdev->driver->enable_te(dssdev, enable);
-       /* XXX for some reason, DSI TE breaks if we don't wait here.
-        * Panel bug? Needs more studying */
-       msleep(100);
+       int r = 0;
+
+       if (dssdev->driver->enable_te) {
+               r = dssdev->driver->enable_te(dssdev, enable);
+               /* XXX for some reason, DSI TE breaks if we don't wait here.
+                * Panel bug? Needs more studying */
+               msleep(100);
+       }
+
        return r;
 }