[media] v4l2-events/fh: merge v4l2_events into v4l2_fh

Drivers that supported events used to be rare, but now that controls can also
raise events this will become much more common since almost all drivers have
controls.

This means that keeping struct v4l2_events as a separate struct make no more
sense. Merging it into struct v4l2_fh simplifies things substantially as it
is now an integral part of the filehandle struct.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 10 insertions, 14 deletions

diff --git a/include/media/v4l2-event.h b/include/media/v4l2-event.h
index 45e9c1e05513..042b893035de 100644
--- a/include/media/v4l2-event.h
+++ b/include/media/v4l2-event.h
@@ -43,17 +43,6 @@ struct v4l2_subscribed_event {
         u32                     id;
 };
 
-struct v4l2_events {
-        wait_queue_head_t       wait;
-        struct list_head        subscribed; /* Subscribed events */
-        struct list_head        free; /* Events ready for use */
-        struct list_head        available; /* Dequeueable event */
-        unsigned int            navailable;
-        unsigned int            nallocated; /* Number of allocated events */
-        u32                     sequence;
-};
-
-int v4l2_event_init(struct v4l2_fh *fh);
 int v4l2_event_alloc(struct v4l2_fh *fh, unsigned int n);
 void v4l2_event_free(struct v4l2_fh *fh);
 int v4l2_event_dequeue(struct v4l2_fh *fh, struct v4l2_event *event,
diff --git a/include/media/v4l2-fh.h b/include/media/v4l2-fh.h
index d2471116ad68..bfc0457ca6ef 100644
--- a/include/media/v4l2-fh.h
+++ b/include/media/v4l2-fh.h
@@ -29,15 +29,22 @@
 #include <linux/list.h>
 
 struct video_device;
-struct v4l2_events;
 struct v4l2_ctrl_handler;
 
 struct v4l2_fh {
         struct list_head        list;
         struct video_device     *vdev;
-        struct v4l2_events      *events; /* events, pending and subscribed */
         struct v4l2_ctrl_handler *ctrl_handler;
         enum v4l2_priority      prio;
+
+        /* Events */
+        wait_queue_head_t       wait;
+        struct list_head        subscribed; /* Subscribed events */
+        struct list_head        free; /* Events ready for use */
+        struct list_head        available; /* Dequeueable event */
+        unsigned int            navailable;
+        unsigned int            nallocated; /* Number of allocated events */
+        u32                     sequence;
 };
 
 /*
@@ -46,7 +53,7 @@ struct v4l2_fh {
  * from driver's v4l2_file_operations->open() handler if the driver
  * uses v4l2_fh.
  */
-int v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev);
+void v4l2_fh_init(struct v4l2_fh *fh, struct video_device *vdev);
 /*
  * Add the fh to the list of file handles on a video_device. The file
  * handle must be initialised first.