This fixes a possible race where an interrupt arrives before complete initialization and crashes because iio_trigger_get_drvdata returns NULL.
Cc: Linus Walleij <[email protected]> Cc: Giuseppe Barba <[email protected]> Cc: Denis Ciocca <[email protected]> Signed-off-by: Crestez Dan Leonard <[email protected]> --- I ran into this while breaking the driver. But since the interrupt line can be shared the handler should always be able to accept and ignore a call. drivers/iio/common/st_sensors/st_sensors_trigger.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c index 98bd5b3..7c2e6ab 100644 --- a/drivers/iio/common/st_sensors/st_sensors_trigger.c +++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c @@ -89,6 +89,10 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev, return -ENOMEM; } + iio_trigger_set_drvdata(sdata->trig, indio_dev); + sdata->trig->ops = trigger_ops; + sdata->trig->dev.parent = sdata->dev; + irq = sdata->get_irq_data_ready(indio_dev); irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq)); /* @@ -150,10 +154,6 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev, goto iio_trigger_free; } - iio_trigger_set_drvdata(sdata->trig, indio_dev); - sdata->trig->ops = trigger_ops; - sdata->trig->dev.parent = sdata->dev; - err = iio_trigger_register(sdata->trig); if (err < 0) { dev_err(&indio_dev->dev, "failed to register iio trigger.\n"); -- 2.5.5
