This is a note to let you know that I've just added the patch titled

iio: stk3310: Don't return error code in interrupt handler

to my char-misc git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc.git in the char-misc-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 8e1eeca5afa7ba84d885987165dbdc5decf15413 Mon Sep 17 00:00:00 2001

From: Lars-Peter Clausen lars@metafoo.de Date: Sun, 24 Oct 2021 19:12:51 +0200 Subject: iio: stk3310: Don't return error code in interrupt handler

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 --- drivers/iio/light/stk3310.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c index 07e91846307c..fc63856ed54d 100644 --- a/drivers/iio/light/stk3310.c +++ b/drivers/iio/light/stk3310.c @@ -546,9 +546,8 @@ static irqreturn_t stk3310_irq_event_handler(int irq, void *private) 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, @@ -560,6 +559,7 @@ static irqreturn_t stk3310_irq_event_handler(int irq, void *private) 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;