X-Git-Url: http://git.samba.org/samba.git/?a=blobdiff_plain;f=drivers%2Fiio%2Fadc%2Fstm32-adc.c;fp=drivers%2Fiio%2Fadc%2Fstm32-adc.c;h=c105d82c3e4545983a2f313e95df60ff0bd232bd;hb=9c0d6ccd7d6bbd275e390b55a3390b4274291d95;hp=1aadb2ad2cabdf12130030d4bf8b341b0fb93c42;hpb=e55245d115bb9054cb72cdd5dda5660f4484873a;p=sfrench%2Fcifs-2.6.git

diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index 1aadb2ad2cab..c105d82c3e45 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -2006,16 +2006,15 @@ static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm
 	 * to get the *real* number of channels.
 	 */
 	ret = device_property_count_u32(dev, "st,adc-diff-channels");
-	if (ret < 0)
-		return ret;
-
-	ret /= (int)(sizeof(struct stm32_adc_diff_channel) / sizeof(u32));
-	if (ret > adc_info->max_channels) {
-		dev_err(&indio_dev->dev, "Bad st,adc-diff-channels?\n");
-		return -EINVAL;
-	} else if (ret > 0) {
-		adc->num_diff = ret;
-		num_channels += ret;
+	if (ret > 0) {
+		ret /= (int)(sizeof(struct stm32_adc_diff_channel) / sizeof(u32));
+		if (ret > adc_info->max_channels) {
+			dev_err(&indio_dev->dev, "Bad st,adc-diff-channels?\n");
+			return -EINVAL;
+		} else if (ret > 0) {
+			adc->num_diff = ret;
+			num_channels += ret;
+		}
 	}
 
 	/* Optional sample time is provided either for each, or all channels */