From: Lars-Peter Clausen lars@metafoo.de
commit 67fe29583e72b2103abb661bb58036e3c1f00277 upstream.
IIO trigger handlers must call iio_trigger_notify_done() when done. This must be done even when an error occurred. Otherwise the trigger will be seen as busy indefinitely and the trigger handler will never be called again.
The itg3200 driver neglects to call iio_trigger_notify_done() when there is an error reading the gyro data. Fix this by making sure that iio_trigger_notify_done() is included in the error exit path.
Fixes: 9dbf091da080 ("iio: gyro: Add itg3200") Signed-off-by: Lars-Peter Clausen lars@metafoo.de Link: https://lore.kernel.org/r/20211101144055.13858-1-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/gyro/itg3200_buffer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/iio/gyro/itg3200_buffer.c +++ b/drivers/iio/gyro/itg3200_buffer.c @@ -64,9 +64,9 @@ static irqreturn_t itg3200_trigger_handl
iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp);
+error_ret: iio_trigger_notify_done(indio_dev->trig);
-error_ret: return IRQ_HANDLED; }