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iio: adc: fix a potential NULL pointer dereference

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devm_iio_trigger_alloc may fail and return NULL. The fix returns
ENOMEM when it fails.

Signed-off-by: Kangjie Lu <kjlu@umn.edu>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Kangjie Lu 2019-03-08 22:53:55 -06:00 committed by Jonathan Cameron
parent d43102f525
commit 13814627c9
1 changed files with 2 additions and 0 deletions
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drivers/iio/adc/mxs-lradc-adc.c
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@ -465,6 +465,8 @@ static int mxs_lradc_adc_trigger_init(struct iio_dev *iio)
trig = devm_iio_trigger_alloc(&iio->dev, "%s-dev%i", iio->name,
iio->id);
if (!trig)
return -ENOMEM;
trig->dev.parent = adc->dev;
iio_trigger_set_drvdata(trig, iio);