iio: adc: ad_sigma_delta: Remove unused variable 'ret'

Fixes the following W=1 kernel build warning(s):

 drivers/iio/adc/ad_sigma_delta.c: In function ‘ad_sd_trigger_handler’:
 drivers/iio/adc/ad_sigma_delta.c:405:6: warning: variable ‘ret’ set but not used [-Wunused-but-set-variable]
 405 | int ret;
 | ^~~

Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index 3554ee6..86039e9 100644 (file)
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -398,7 +398,6 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
        unsigned int reg_size;
        unsigned int data_reg;
        uint8_t data[16];
-       int ret;
 
        memset(data, 0x00, 16);
 
@@ -415,14 +414,12 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
        case 4:
        case 2:
        case 1:
-               ret = ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size,
-                       &data[0]);
+               ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size, &data[0]);
                break;
        case 3:
                /* We store 24 bit samples in a 32 bit word. Keep the upper
                 * byte set to zero. */
-               ret = ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size,
-                       &data[1]);
+               ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size, &data[1]);
                break;
        }