iio: dac: ad5758: remove set but not used variable 'dc_dc_mode'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/iio/dac/ad5758.c: In function ad5758_write_powerdown:
drivers/iio/dac/ad5758.c:585:15: warning: variable dc_dc_mode set but not used [-Wunused-but-set-variable]

It is not used any more since
commit edde945257e2 ("iio: dac: ad5758: Modifications for new revision")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/dac/ad5758.c b/drivers/iio/dac/ad5758.c
index 7d11648..475646c 100644 (file)
--- a/drivers/iio/dac/ad5758.c
+++ b/drivers/iio/dac/ad5758.c
@@ -584,7 +584,7 @@ static ssize_t ad5758_write_powerdown(struct iio_dev *indio_dev,
 {
        struct ad5758_state *st = iio_priv(indio_dev);
        bool pwr_down;
-       unsigned int dc_dc_mode, dac_config_mode, val;
+       unsigned int dac_config_mode, val;
        unsigned long int dac_config_msk;
        int ret;
 
@@ -593,13 +593,10 @@ static ssize_t ad5758_write_powerdown(struct iio_dev *indio_dev,
                return ret;
 
        mutex_lock(&st->lock);
-       if (pwr_down) {
-               dc_dc_mode = AD5758_DCDC_MODE_POWER_OFF;
+       if (pwr_down)
                val = 0;
-       } else {
-               dc_dc_mode = st->dc_dc_mode;
+       else
                val = 1;
-       }
 
        dac_config_mode = AD5758_DAC_CONFIG_OUT_EN_MODE(val) |
                          AD5758_DAC_CONFIG_INT_EN_MODE(val);