V4L/DVB (13557): v4l: Remove unneeded video_device::minor usage in drivers

The video_device::minor field is used where it shouldn't, either to

- test for error conditions that can't happen anymore with the current
  v4l-dvb core,
- store the value in a driver private field that isn't used anymore,
- check the video device type where video_device::vfl_type should be
  used, or
- create the name of a kernel thread that should get a stable name.

Remove or fix those use cases.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 4 insertions, 11 deletions

diff --git a/drivers/media/video/bt8xx/bttv-driver.c b/drivers/media/video/bt8xx/bttv-driver.c
index 410260a1c364..3182a406bdd1 100644
--- a/drivers/media/video/bt8xx/bttv-driver.c
+++ b/drivers/media/video/bt8xx/bttv-driver.c
@@ -3206,7 +3206,6 @@ err:
 
 static int bttv_open(struct file *file)
 {
-	int minor = video_devdata(file)->minor;
 	struct video_device *vdev = video_devdata(file);
 	struct bttv *btv = video_drvdata(file);
 	struct bttv_fh *fh;
@@ -3214,17 +3213,17 @@ static int bttv_open(struct file *file)
 
 	dprintk(KERN_DEBUG "bttv: open dev=%s\n", video_device_node_name(vdev));
 
-	lock_kernel();
-	if (btv->video_dev->minor == minor) {
+	if (vdev->vfl_type == VFL_TYPE_GRABBER) {
 		type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-	} else if (btv->vbi_dev->minor == minor) {
+	} else if (vdev->vfl_type == VFL_TYPE_VBI) {
 		type = V4L2_BUF_TYPE_VBI_CAPTURE;
 	} else {
 		WARN_ON(1);
-		unlock_kernel();
 		return -ENODEV;
 	}
 
+	lock_kernel();
+
 	dprintk(KERN_DEBUG "bttv%d: open called (type=%s)\n",
 		btv->c.nr,v4l2_type_names[type]);
 
@@ -3408,7 +3407,6 @@ static struct video_device bttv_video_template = {
 
 static int radio_open(struct file *file)
 {
-	int minor = video_devdata(file)->minor;
 	struct video_device *vdev = video_devdata(file);
 	struct bttv *btv = video_drvdata(file);
 	struct bttv_fh *fh;
@@ -3416,11 +3414,6 @@ static int radio_open(struct file *file)
 	dprintk("bttv: open dev=%s\n", video_device_node_name(vdev));
 
 	lock_kernel();
-	WARN_ON(btv->radio_dev && btv->radio_dev->minor != minor);
-	if (!btv->radio_dev || btv->radio_dev->minor != minor) {
-		unlock_kernel();
-		return -ENODEV;
-	}
 
 	dprintk("bttv%d: open called (radio)\n",btv->c.nr);