From f94352f8db97b9a3b3c1ec45f6fef1400880168a Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Sun, 3 Mar 2013 20:19:07 -0800
Subject: [PATCH] Input: ads7864 - check return value of regulator enable
At least print a warning if we can't power the device up.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
---
drivers/input/touchscreen/ads7846.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/input/touchscreen/ads7846.c b/drivers/input/touchscreen/ads7846.c
index 4f702b3ec1a3..434c3df250ca 100644
--- a/drivers/input/touchscreen/ads7846.c
+++ b/drivers/input/touchscreen/ads7846.c
@@ -236,7 +236,12 @@ static void __ads7846_disable(struct ads7846 *ts)
/* Must be called with ts->lock held */
static void __ads7846_enable(struct ads7846 *ts)
{
- regulator_enable(ts->reg);
+ int error;
+
+ error = regulator_enable(ts->reg);
+ if (error != 0)
+ dev_err(&ts->spi->dev, "Failed to enable supply: %d\n", error);
+
ads7846_restart(ts);
}
--
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