OMAP: DSS2: Check if display supports update mode changes
Check whether the display actually has the set_update_mode() function
before calling it. Only the sysfs codepath was broken, the omapfb ioctl
had the necessary protection.
Signed-off-by: Ville Syrjälä <ville.syrjala@nokia.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c
index ef8c852..480aeaa 100644
--- a/drivers/video/omap2/dss/display.c
+++ b/drivers/video/omap2/dss/display.c
@@ -82,6 +82,9 @@
int val, r;
enum omap_dss_update_mode mode;
+ if (!dssdev->driver->set_update_mode)
+ return -EINVAL;
+
val = simple_strtoul(buf, NULL, 10);
switch (val) {