The label property is defined as optional in the DFSDM binding.
Parse the label property only when it is defined in the device tree.
Fixes: 3208fa0cd919 ("iio: adc: stm32-dfsdm: adopt generic channels bindings")
Signed-off-by: Olivier Moysan <olivier.moysan@xxxxxxxxxxx>
---
drivers/iio/adc/stm32-dfsdm-adc.c | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
index 2037f73426d4..e304e3714020 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -691,11 +691,14 @@ static int stm32_dfsdm_generic_channel_parse_of(struct stm32_dfsdm *dfsdm,
return -EINVAL;
}
- ret = fwnode_property_read_string(node, "label", &ch->datasheet_name);
- if (ret < 0) {
- dev_err(&indio_dev->dev,
- " Error parsing 'label' for idx %d\n", ch->channel);
- return ret;
+ if (fwnode_property_present(node, "label")) {
+ /* label is optional */
+ ret = fwnode_property_read_string(node, "label", &ch->datasheet_name);
+ if (ret < 0) {
+ dev_err(&indio_dev->dev,
+ " Error parsing 'label' for idx %d\n", ch->channel);
+ return ret;
+ }
}
df_ch = &dfsdm->ch_list[ch->channel];
--
2.25.1
