[media] cx18: use v4l2_fh as preparation for adding core priority support

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 12 insertions, 0 deletions

diff --git a/drivers/media/video/cx18/cx18-driver.h b/drivers/media/video/cx18/cx18-driver.h
index de2457741e26..30a857473e54 100644
--- a/drivers/media/video/cx18/cx18-driver.h
+++ b/drivers/media/video/cx18/cx18-driver.h
@@ -50,6 +50,7 @@
 #include <media/v4l2-common.h>
 #include <media/v4l2-ioctl.h>
 #include <media/v4l2-device.h>
+#include <media/v4l2-fh.h>
 #include <media/tuner.h>
 #include <media/ir-kbd-i2c.h>
 #include "cx18-mailbox.h"
@@ -405,12 +406,23 @@ struct cx18_stream {
 };
 
 struct cx18_open_id {
+        struct v4l2_fh fh;
         u32 open_id;
         int type;
         enum v4l2_priority prio;
         struct cx18 *cx;
 };
 
+static inline struct cx18_open_id *fh2id(struct v4l2_fh *fh)
+{
+        return container_of(fh, struct cx18_open_id, fh);
+}
+
+static inline struct cx18_open_id *file2id(struct file *file)
+{
+        return fh2id(file->private_data);
+}
+
 /* forward declaration of struct defined in cx18-cards.h */
 struct cx18_card;