V4L/DVB (10135): v4l2: introduce v4l2_file_operations.

Introduce a struct v4l2_file_operations for v4l2 drivers.

Remove the unnecessary inode argument.

Move compat32 handling (and llseek) into the v4l2-dev core: this is now
handled in the v4l2 core and no longer in the drivers themselves.

Note that this changeset reverts an earlier patch that changed the return
type of__video_ioctl2 from int to long. This change will be reinstated
later in a much improved version.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/v4l2-compat-ioctl32.c b/drivers/media/video/v4l2-compat-ioctl32.c
index 26fdf1e..b4f3914 100644
--- a/drivers/media/video/v4l2-compat-ioctl32.c
+++ b/drivers/media/video/v4l2-compat-ioctl32.c
@@ -1072,12 +1072,7 @@
 	}
 	return ret;
 }
-#else
-long v4l_compat_ioctl32(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	return -ENOIOCTLCMD;
-}
-#endif
 EXPORT_SYMBOL_GPL(v4l_compat_ioctl32);
+#endif
 
 MODULE_LICENSE("GPL");