diff options
| author | Jean Delvare <khali@linux-fr.org> | 2010-04-14 16:14:08 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-04-26 07:41:26 -0700 |
| commit | 03c537ee0e487507cb9fa4e59a8cd8ea307c23dc (patch) | |
| tree | c037e44bdddbe84ec46d4d1234c3a5d53905059e /drivers/hwmon | |
| parent | 7fc829f5018cc20e12d25811d15a2d171225a7da (diff) | |
hwmon: (sht15) Properly handle the case CONFIG_REGULATOR=n
commit c7a78d2c2e2537fd24903e966f34aae50319d587 upstream.
When CONFIG_REGULATOR isn't set, regulator_get_voltage() returns 0.
Properly handle this case by not trusting the value.
Reported-by: Jerome Oufella <jerome.oufella@savoirfairelinux.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Jonathan Cameron <jic23@cam.ac.uk>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/hwmon')
| -rw-r--r-- | drivers/hwmon/sht15.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/hwmon/sht15.c b/drivers/hwmon/sht15.c index bf41d4e6e5ac..fbc997ee67d9 100644 --- a/drivers/hwmon/sht15.c +++ b/drivers/hwmon/sht15.c @@ -541,7 +541,12 @@ static int __devinit sht15_probe(struct platform_device *pdev) /* If a regulator is available, query what the supply voltage actually is!*/ data->reg = regulator_get(data->dev, "vcc"); if (!IS_ERR(data->reg)) { - data->supply_uV = regulator_get_voltage(data->reg); + int voltage; + + voltage = regulator_get_voltage(data->reg); + if (voltage) + data->supply_uV = voltage; + regulator_enable(data->reg); /* setup a notifier block to update this if another device * causes the voltage to change */ |