Hi Hans,
> int my_subdev_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh,
> struct v4l2_event_subscription *sub)
> {
> switch (sub->type) {
> case V4L2_EVENT_CTRL:
> return v4l2_ctrl_subdev_subscribe_event(sd, fh, sub);
> case V4L2_EVENT_SOURCE_CHANGE:
> return v4l2_src_change_event_subdev_subscribe(sd, fh, sub);
> ...
> default:
> return -EINVAL;
> }
The state machine is already ON, whether the user does a subdev open or not.
So, the events are generated anyways.
I guess it's not too weird as the v4l2_event_queue_fh() requires fh, and it seems okay to get hold off fh by using these ops.
Regards,
Divneil --
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