From: Lars-Peter Clausen lars@metafoo.de
commit 8e1eeca5afa7ba84d885987165dbdc5decf15413 upstream.
Interrupt handlers must return one of the irqreturn_t values. Returning a error code is not supported.
The stk3310 event interrupt handler returns an error code when reading the flags register fails.
Fix the implementation to always return an irqreturn_t value.
Fixes: 3dd477acbdd1 ("iio: light: Add threshold interrupt support for STK3310") Signed-off-by: Lars-Peter Clausen lars@metafoo.de Link: https://lore.kernel.org/r/20211024171251.22896-3-lars@metafoo.de 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/light/stk3310.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/iio/light/stk3310.c +++ b/drivers/iio/light/stk3310.c @@ -545,9 +545,8 @@ static irqreturn_t stk3310_irq_event_han mutex_lock(&data->lock); ret = regmap_field_read(data->reg_flag_nf, &dir); if (ret < 0) { - dev_err(&data->client->dev, "register read failed\n"); - mutex_unlock(&data->lock); - return ret; + dev_err(&data->client->dev, "register read failed: %d\n", ret); + goto out; } event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1, IIO_EV_TYPE_THRESH, @@ -559,6 +558,7 @@ static irqreturn_t stk3310_irq_event_han ret = regmap_field_write(data->reg_flag_psint, 0); if (ret < 0) dev_err(&data->client->dev, "failed to reset interrupts\n"); +out: mutex_unlock(&data->lock);
return IRQ_HANDLED;