3.0-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mark Brown <broo...@opensource.wolfsonmicro.com>

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

---
 drivers/hwmon/sht15.c |    8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/hwmon/sht15.c
+++ b/drivers/hwmon/sht15.c
@@ -926,7 +926,13 @@ static int __devinit sht15_probe(struct
                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


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