Hardware interrupts are enabled in the probe function, before the subdev is registered to its v4l2_device. Until v4l2_device_register_subdev_node is called, sd->devnode is NULL and v4l2_subdev_notify_event must not be called. Signed-off-by: Philipp Zabel <p.zabel@xxxxxxxxxxxxxx> --- drivers/media/i2c/tc358743.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/tc358743.c b/drivers/media/i2c/tc358743.c index 7eba223..cd73cb4 100644 --- a/drivers/media/i2c/tc358743.c +++ b/drivers/media/i2c/tc358743.c @@ -860,7 +860,8 @@ static void tc358743_format_change(struct v4l2_subdev *sd) &timings, false); } - v4l2_subdev_notify_event(sd, &tc358743_ev_fmt); + if (sd->devnode) + v4l2_subdev_notify_event(sd, &tc358743_ev_fmt); } static void tc358743_init_interrupts(struct v4l2_subdev *sd) -- 2.4.6 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html