iio: adc: ad7192: properly check spi_get_device_match_data()

spi_get_device_match_data() can return a NULL pointer. Hence, let's
check for it.

Signed-off-by: Nuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20241014-fix-error-check-v1-1-089e1003d12f@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
index 7042ddf..955e9ef 100644 (file)
--- a/drivers/iio/adc/ad7192.c
+++ b/drivers/iio/adc/ad7192.c
@@ -1394,6 +1394,9 @@ static int ad7192_probe(struct spi_device *spi)
        st->int_vref_mv = ret == -ENODEV ? avdd_mv : ret / MILLI;
 
        st->chip_info = spi_get_device_match_data(spi);
+       if (!st->chip_info)
+               return -ENODEV;
+
        indio_dev->name = st->chip_info->name;
        indio_dev->modes = INDIO_DIRECT_MODE;
        indio_dev->info = st->chip_info->info;