[PATCH v5 4/6] media: v4l2-subdev: Assume V4L2_SUBDEV_API is selected

[Jacopo Mondi <jacopo@jmondi.org>]

A sub-device device node can be registered in user space only if the
CONFIG_V4L2_SUBDEV_API Kconfig option is selected.

Remove checks from the v4l2-subdev file handle open/close functions and
ioctl handler as they are only accessible if a device node was registered
to user space in first place.

Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
---
 drivers/media/v4l2-core/v4l2-subdev.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c
index 1dc263c2ca0a..f3fe515b8ccb 100644
--- a/drivers/media/v4l2-core/v4l2-subdev.c
+++ b/drivers/media/v4l2-core/v4l2-subdev.c
@@ -24,22 +24,19 @@
 
 static int subdev_fh_init(struct v4l2_subdev_fh *fh, struct v4l2_subdev *sd)
 {
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
 	if (sd->entity.num_pads) {
 		fh->pad = v4l2_subdev_alloc_pad_config(sd);
 		if (fh->pad == NULL)
 			return -ENOMEM;
 	}
-#endif
+
 	return 0;
 }
 
 static void subdev_fh_free(struct v4l2_subdev_fh *fh)
 {
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
 	v4l2_subdev_free_pad_config(fh->pad);
 	fh->pad = NULL;
-#endif
 }
 
 static int subdev_open(struct file *file)
@@ -329,10 +326,8 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 	struct video_device *vdev = video_devdata(file);
 	struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
 	struct v4l2_fh *vfh = file->private_data;
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
 	struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
 	bool ro_subdev = test_bit(V4L2_FL_SUBDEV_RO_DEVNODE, &vdev->flags);
-#endif
 	int rval;
 
 	switch (cmd) {
@@ -466,7 +461,6 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 		return ret;
 	}
 
-#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
 	case VIDIOC_SUBDEV_G_FMT: {
 		struct v4l2_subdev_format *format = arg;
 
@@ -646,7 +640,7 @@ static long subdev_do_ioctl(struct file *file, unsigned int cmd, void *arg)
 
 	case VIDIOC_SUBDEV_QUERYSTD:
 		return v4l2_subdev_call(sd, video, querystd, arg);
-#endif
+
 	default:
 		return v4l2_subdev_call(sd, core, ioctl, cmd, arg);
 	}
-- 
2.26.1