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-rw-r--r--drivers/video/omap2/dss/display.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c
index ef8c8529dda2..480aeaa5f39c 100644
--- a/drivers/video/omap2/dss/display.c
+++ b/drivers/video/omap2/dss/display.c
@@ -82,6 +82,9 @@ static ssize_t display_upd_mode_store(struct device *dev,
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) {

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