iio: adc: cf_axi_adc_core: Fix NULL pointer dereference in axiadc_rea…

…d_raw Make sure extend_name exist before accessing it. Fixes: dced6c9( "iio: adc: cf_axi_adc_core: Support for 64-bit") Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
analogdevicesinc · Feb 21, 2022 · 12a4e47 · 12a4e47
1 parent 8e59ec4
commit 12a4e47
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/iio/adc/cf_axi_adc_core.c b/drivers/iio/adc/cf_axi_adc_core.c
@@ -577,7 +577,7 @@ static int axiadc_read_raw(struct iio_dev *indio_dev,
 			llval = llval >> 16;
 		}
 
-		if (!strcmp(chan->extend_name, "user_logic")) {
+		if (chan->extend_name && !strcmp(chan->extend_name, "user_logic")) {
 			tmp = axiadc_read(st,
 				ADI_REG_CHAN_USR_CNTRL_2(channel));