diff options
| author | Ville Syrjälä <ville.syrjala@nokia.com> | 2010-03-02 21:30:52 +0200 |
|---|---|---|
| committer | Tomi Valkeinen <tomi.valkeinen@nokia.com> | 2010-08-03 15:18:45 +0300 |
| commit | 825f50b1a498f6e3532c8fcbc093322bb386f9e1 (patch) | |
| tree | 0e5b7933363c3cfa7594654849d1cb373f7cf4bc /drivers/video/omap2/dss/display.c | |
| parent | 5ab8e30c18292cf30de3adc36b0e2ed9d271e4e7 (diff) | |
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>
Diffstat (limited to 'drivers/video/omap2/dss/display.c')
| -rw-r--r-- | drivers/video/omap2/dss/display.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/video/omap2/dss/display.c b/drivers/video/omap2/dss/display.c index ef8c8529dda..480aeaa5f39 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) { |