[PATCH 5.4 38/39] iio: adc: at91-sama5d2_adc: fix an error code in at91_adc_allocate_trigger()

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From: Dan Carpenter <error27@xxxxxxxxx>

commit 73a428b37b9b538f8f8fe61caa45e7f243bab87c upstream.

The at91_adc_allocate_trigger() function is supposed to return error
pointers.  Returning a NULL will cause an Oops.

Fixes: 5e1a1da0f8c9 ("iio: adc: at91-sama5d2_adc: add hw trigger and buffer support")
Signed-off-by: Dan Carpenter <error27@xxxxxxxxx>
Link: https://lore.kernel.org/r/5d728f9d-31d1-410d-a0b3-df6a63a2c8ba@kili.mountain
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/iio/adc/at91-sama5d2_adc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -983,7 +983,7 @@ static struct iio_trigger *at91_adc_allo
 	trig = devm_iio_trigger_alloc(&indio->dev, "%s-dev%d-%s", indio->name,
 				      indio->id, trigger_name);
 	if (!trig)
-		return NULL;
+		return ERR_PTR(-ENOMEM);
 
 	trig->dev.parent = indio->dev.parent;
 	iio_trigger_set_drvdata(trig, indio);





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