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OMAPDSS: TPO-TD03MTEA1: Check for errors from regulator_enable()

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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>
This commit is contained in:
Mark Brown 2012-03-19 15:02:31 +00:00 committed by Tomi Valkeinen
parent ec8741078d
commit 956107eadc
1 changed files with 4 additions and 1 deletions
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5
drivers/video/omap2/displays/panel-tpo-td043mtea1.c
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@ -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) static int tpo_td043_power_on(struct tpo_td043_device *tpo_td043)
{ {
int nreset_gpio = tpo_td043->nreset_gpio; int nreset_gpio = tpo_td043->nreset_gpio;
int r;
if (tpo_td043->powered_on) if (tpo_td043->powered_on)
return 0; 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 */ /* wait for regulator to stabilize */
msleep(160); msleep(160);