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iio: dac: ad5504: Don't set error code to voltage_uv

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regulator_get_voltage() may return negative error code.
Add error checking to avoid setting error code to voltage_uv.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Acked-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Axel Lin 2012-12-14 12:06:00 +00:00 committed by Jonathan Cameron
parent 7e2dcc6982
commit 0ce2fdaa97
1 changed files with 5 additions and 1 deletions
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6
drivers/iio/dac/ad5504.c
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@ -296,7 +296,11 @@ static int __devinit ad5504_probe(struct spi_device *spi)
if (ret)
goto error_put_reg;
voltage_uv = regulator_get_voltage(reg);
ret = regulator_get_voltage(reg);
if (ret < 0)
goto error_disable_reg;
voltage_uv = ret;
}
spi_set_drvdata(spi, indio_dev);