OMAPDSS: VENC: Check for errors from regulator_enable()

It is possible for regulator_enable() to fail and if it does fail that's
generally a bad sign for anything we try to do with the hardware afterwards
so check for and immediately return an error if regulator_enable() fails.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/video/omap2/dss/venc.c b/drivers/video/omap2/dss/venc.c
index 9c3daf71750c..abfbd4ac3e22 100644
--- a/drivers/video/omap2/dss/venc.c
+++ b/drivers/video/omap2/dss/venc.c
@@ -443,7 +443,9 @@ static int venc_power_on(struct omap_dss_device *dssdev)
         dispc_set_digit_size(dssdev->panel.timings.x_res,
                         dssdev->panel.timings.y_res/2);
 
-        regulator_enable(venc.vdda_dac_reg);
+        r = regulator_enable(venc.vdda_dac_reg);
+        if (r)
+                goto err;
 
         if (dssdev->platform_enable)
                 dssdev->platform_enable(dssdev);