[PATCH 4.0 035/148] iio: adc: cc10001: Fix regulator_get_voltage() return value check

Greg Kroah-Hartman
2015-06-03T12:50:19Z

From: Naidu Tellapati <naidu.tellapati@imgtec.com>

commit 65a761bf8d55fdcf8ecc4642382a4e76c086e44c upstream.

regulator_get_voltage() returns a non-negative value in case of success,
and a negative error in case of error. Let's fix this.

Fixes: 1664f6a5b0c8 ("iio: adc: Cosmic Circuits 10001 ADC driver")
Signed-off-by: Naidu Tellapati <naidu.tellapati@imgtec.com>
Signed-off-by: Ezequiel Garcia <ezequiel.garcia@imgtec.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/iio/adc/cc10001_adc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/adc/cc10001_adc.c
+++ b/drivers/iio/adc/cc10001_adc.c
@@ -231,7 +231,7 @@ static int cc10001_adc_read_raw(struct i

case IIO_CHAN_INFO_SCALE:
ret = regulator_get_voltage(adc_dev->reg);
- if (ret)
+ if (ret < 0)
return ret;

*val = ret / 1000;