iio: dac: ad3552r: fix signedness bug in ad3552r_reset()

The "val" variable is used to store either negative error codes from
ad3552r_read_reg_wrapper() or positive u16 values on success.  It needs
to be signed for the error handling to work correctly.

Fixes: 8f2b54824b28 ("drivers:iio:dac: Add AD3552R driver support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20220316122354.GA16825@kili
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c
index 97f13c0b96312884876aaeda1fd6c6e5b2ba9ed8..e0a93b27e0e81431df23d9d005bd27aaa37f810b 100644 (file)
--- a/drivers/iio/dac/ad3552r.c
+++ b/drivers/iio/dac/ad3552r.c
@@ -656,7 +656,7 @@ static int ad3552r_reset(struct ad3552r_desc *dac)
 {
        struct reg_addr_pool addr;
        int ret;
-       u16 val;
+       int val;
 
        dac->gpio_reset = devm_gpiod_get_optional(&dac->spi->dev, "reset",
                                                  GPIOD_OUT_LOW);