iio: adc: ad9467: use the more common !val NULL check

Check !val instead of directing checking for NULL (val == NULL).
No functional changes intended.

Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20231207-iio-backend-prep-v2-7-a4a33bc4d70e@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c
index c5ed62cc86465e3bcc419e10389a56ca2e825b33..6581fce4ba959af08df2ffd7e0fa67306755e2be 100644 (file)
--- a/drivers/iio/adc/ad9467.c
+++ b/drivers/iio/adc/ad9467.c
@@ -158,7 +158,7 @@ static int ad9467_reg_access(struct adi_axi_adc_conv *conv, unsigned int reg,
        struct spi_device *spi = st->spi;
        int ret;
 
-       if (readval == NULL) {
+       if (!readval) {
                guard(mutex)(&st->lock);
                ret = ad9467_spi_write(spi, reg, writeval);
                if (ret)