From: Mark Brown <broonie@opensource.wolfsonmicro.com>
Date: Sat, 2 Mar 2013 07:33:30 +0000 (+0800)
Subject: hwmon: (sht15) Check return value of regulator_enable()
X-Git-Tag: v3.8.3~60
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6d29c5ec4f2f59b5d0426b14722481510a1ef233;p=thirdparty%2Fkernel%2Fstable.git

hwmon: (sht15) Check return value of regulator_enable()

commit 3e78080f81481aa8340374d5a37ae033c1cf4272 upstream.

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@opensource.wolfsonmicro.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---

diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c
index 1c85d39df1716..8047fed8034dc 100644
--- a/drivers/hwmon/sht15.c
+++ b/drivers/hwmon/sht15.c
@@ -926,7 +926,13 @@ 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