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staging:iio:dac:ad5791: Use strtobool for boolean values

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Use strtobool for parsing the powerdown value instead of strict_strtol, since
the powerdown attribute is a boolean value.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Lars-Peter Clausen 2012-06-04 11:36:24 +02:00 committed by Greg Kroah-Hartman
parent 2490594e89
commit 4468cb5525
1 changed files with 6 additions and 8 deletions
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14
drivers/staging/iio/dac/ad5791.c
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@ -114,25 +114,23 @@ static ssize_t ad5791_write_dac_powerdown(struct iio_dev *indio_dev,
uintptr_t private, const struct iio_chan_spec *chan, const char *buf,
size_t len)
{
long readin;
bool pwr_down;
int ret;
struct ad5791_state *st = iio_priv(indio_dev);
ret = strict_strtol(buf, 10, &readin);
ret = strtobool(buf, &pwr_down);
if (ret)
return ret;
if (readin == 0) {
st->pwr_down = false;
if (!pwr_down) {
st->ctrl &= ~(AD5791_CTRL_OPGND | AD5791_CTRL_DACTRI);
} else if (readin == 1) {
st->pwr_down = true;
} else {
if (st->pwr_down_mode == AD5791_DAC_PWRDN_6K)
st->ctrl |= AD5791_CTRL_OPGND;
else if (st->pwr_down_mode == AD5791_DAC_PWRDN_3STATE)
st->ctrl |= AD5791_CTRL_DACTRI;
} else
ret = -EINVAL;
}
st->pwr_down = pwr_down;
ret = ad5791_spi_write(st->spi, AD5791_ADDR_CTRL, st->ctrl);