From: Yang Yingliang yangyingliang@huawei.com
commit 65f20301607d07ee279b0804d11a05a62a6c1a1c upstream.
If iio_trigger_register() returns error, it should call iio_trigger_free() to give up the reference that hold in iio_trigger_alloc(), so that it can call iio_trig_release() to free memory when the refcount hit to 0.
Fixes: 0e589d5fb317 ("ARM: AT91: IIO: Add AT91 ADC driver.") Signed-off-by: Yang Yingliang yangyingliang@huawei.com Link: https://lore.kernel.org/r/20221024084511.815096-1-yangyingliang@huawei.com Cc: Stable@vger.kernel.org Signed-off-by: Jonathan Cameron Jonathan.Cameron@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/iio/adc/at91_adc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
--- a/drivers/iio/adc/at91_adc.c +++ b/drivers/iio/adc/at91_adc.c @@ -616,8 +616,10 @@ static struct iio_trigger *at91_adc_allo trig->ops = &at91_adc_trigger_ops;
ret = iio_trigger_register(trig); - if (ret) + if (ret) { + iio_trigger_free(trig); return NULL; + }
return trig; }