OMAPDSS: TPO-TD03MTEA1: 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>
Acked-by: Grazvydas Ignotas <notasas@gmail.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
index 32f3fcd7f0f0..74c6b873932b 100644
--- a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
+++ b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
@@ -272,11 +272,14 @@ static const struct omap_video_timings tpo_td043_timings = {
 static int tpo_td043_power_on(struct tpo_td043_device *tpo_td043)
 {
         int nreset_gpio = tpo_td043->nreset_gpio;
+        int r;
 
         if (tpo_td043->powered_on)
                 return 0;
 
-        regulator_enable(tpo_td043->vcc_reg);
+        r = regulator_enable(tpo_td043->vcc_reg);
+        if (r != 0)
+                return r;
 
         /* wait for regulator to stabilize */
         msleep(160);