diff options
| author | Lars-Peter Clausen <lars@metafoo.de> | 2021-11-01 14:30:43 +0100 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2021-11-17 17:52:35 +0000 |
| commit | 90751fb9f224e0e1555b49a8aa9e68f6537e4cec (patch) | |
| tree | fd6e6880adcce53f8aac7a4cc3562340602dcc5c /drivers/iio | |
| parent | a827a4984664308f13599a0b26c77018176d0c7c (diff) | |
| download | linux-90751fb9f224e0e1555b49a8aa9e68f6537e4cec.tar.gz | |
iio: dln2: Check return value of devm_iio_trigger_register()
Registering a trigger can fail and the return value of
devm_iio_trigger_register() must be checked. Otherwise undefined behavior
can occur when the trigger is used.
Fixes: 7c0299e879dd ("iio: adc: Add support for DLN2 ADC")
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20211101133043.6974-1-lars@metafoo.de
Cc: <stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'drivers/iio')
| -rw-r--r-- | drivers/iio/adc/dln2-adc.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/iio/adc/dln2-adc.c b/drivers/iio/adc/dln2-adc.c index 6c67192946aa..97d162a3cba4 100644 --- a/drivers/iio/adc/dln2-adc.c +++ b/drivers/iio/adc/dln2-adc.c @@ -655,7 +655,11 @@ static int dln2_adc_probe(struct platform_device *pdev) return -ENOMEM; } iio_trigger_set_drvdata(dln2->trig, dln2); - devm_iio_trigger_register(dev, dln2->trig); + ret = devm_iio_trigger_register(dev, dln2->trig); + if (ret) { + dev_err(dev, "failed to register trigger: %d\n", ret); + return ret; + } iio_trigger_set_immutable(indio_dev, dln2->trig); ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, |