[PATCH 1/3] iio: adc: stm32-adc: warn if dt uses legacy channel config

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Since nearly all stm32 dt's are using the legacy adc channel config,
we should warn users about using it.

Signed-off-by: Sean Nyekjaer <sean@xxxxxxxxxx>
 drivers/iio/adc/stm32-adc.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index 1aadb2ad2cab..d8e755d0cc52 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -1993,6 +1993,8 @@ static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm
 	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
 	int num_channels = 0, ret;
+	dev_warn(&indio_dev->dev, "using legacy channel config\n");
 	ret = device_property_count_u32(dev, "st,adc-channels");
 	if (ret > adc_info->max_channels) {
 		dev_err(&indio_dev->dev, "Bad st,adc-channels?\n");

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