A device bound through driver_override need not match an entry in the driver tables. In that case spi_get_device_match_data() returns NULL, but ad8366_probe() later dereferences the result while setting up the IIO device. Reject devices without match data before using the chip information. Fixes: d5e02d0d00b9 ("iio: amplifiers: ad8366: add device tree support") Signed-off-by: Jiale Yao <yaojiale02@163.com> Cc: stable@vger.kernel.org Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>