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iio: dac: ad5446: Don't set error code to voltage_uv 

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>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
This commit is contained in:
Axel Lin 2012-12-18 03:33:00 +00:00 committed by Jonathan Cameron
parent 359570ad3f
commit 13e57ee205
1 changed files with 5 additions and 1 deletions
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6
drivers/iio/dac/ad5446.c
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@ -226,7 +226,11 @@ static int __devinit ad5446_probe(struct device *dev, const char *name,
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;
}
indio_dev = iio_device_alloc(sizeof(*st));