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Hans Verkuil authored
If the V4L2_EVENT_SUB_FL_SEND_INITIAL was set, then the application expects to receive an initial event of the initial value of the control. However, commit c53c2549 that added the new v4l2_subscribed_event_ops introduced a regression: while the code still queued that initial event the __v4l2_event_queue_fh() function was modified to ignore such requests if sev->elems was 0 (meaning that the event subscription wasn't finished yet). And sev->elems was only set to a non-zero value after the add operation returned. This patch fixes this by passing the elems value to the add function. Then the add function can set it before queuing the initial event. Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Acked-by:
Hans de Goede <hdegoede@redhat.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
6e6d76cd