commit: 3e78080f81481aa8340374d5a37ae033c1cf4272
From: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 2 Mar 2013 15:33:30 +0800
Subject: hwmon: (sht15) Check return value of regulator_enable()
Not having power is a pretty serious error so check that we are able to
enable the supply and error out if we can't.
Signed-off-by: Mark Brown <broonie@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx #3.8+; 3.0+ will need manual backport
Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx>
---
drivers/hwmon/sht15.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c
index bfe326e..2507f90 100644
--- a/drivers/hwmon/sht15.c
+++ b/drivers/hwmon/sht15.c
@@ -965,7 +965,13 @@ static int sht15_probe(struct platform_device *pdev)
if (voltage)
data->supply_uv = voltage;
- regulator_enable(data->reg);
+ ret = regulator_enable(data->reg);
+ if (ret != 0) {
+ dev_err(&pdev->dev,
+ "failed to enable regulator: %d\n", ret);
+ return ret;
+ }
+
/*
* Setup a notifier block to update this if another device
* causes the voltage to change
--
1.7.10.4
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