V4L/DVB (13554a): v4l: Use the video_drvdata function in drivers

Fix all device drivers to use the video_drvdata function instead of
maintaining a local list of minor to private data mappings. Call
video_set_drvdata to register the driver private pointer when not
already done.

Where applicable, the local list of mappings is completely removed when
it becomes unused.

[mchehab.redhat.com: patch broke into two. This one changes just tm6000]

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

3 files changed, 2 insertions, 28 deletions

diff --git a/drivers/staging/tm6000/tm6000-cards.c b/drivers/staging/tm6000/tm6000-cards.c
index 160b4d714898..6143e20d139d 100644
--- a/drivers/staging/tm6000/tm6000-cards.c
+++ b/drivers/staging/tm6000/tm6000-cards.c
@@ -791,7 +791,6 @@ static int tm6000_usb_probe(struct usb_interface *interface,
         if ((card[nr] >= 0) && (card[nr] < ARRAY_SIZE(tm6000_boards)))
                 dev->model = card[nr];
 
-        INIT_LIST_HEAD(&dev->tm6000_corelist);
         dev->udev = usbdev;
         dev->devno = nr;
 
diff --git a/drivers/staging/tm6000/tm6000-video.c b/drivers/staging/tm6000/tm6000-video.c
index 7828030c4f33..f2b7fe4a3581 100644
--- a/drivers/staging/tm6000/tm6000-video.c
+++ b/drivers/staging/tm6000/tm6000-video.c
@@ -116,8 +116,6 @@ static struct tm6000_fmt format[] = {
         }
 };
 
-static LIST_HEAD(tm6000_corelist);
-
 /* ------------------------------------------------------------------
         DMA and thread functions
    ------------------------------------------------------------------*/
@@ -1321,8 +1319,7 @@ static int tm6000_open(struct file *file)
         struct video_device *vdev = video_devdata(file);
         struct tm6000_core *dev = video_drvdata(file);
         struct tm6000_fh *fh;
-        struct list_head *list;
-        enum v4l2_buf_type type = 0;
+        enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
         int i,rc;
 
         printk(KERN_INFO "tm6000: open called (dev=%s)\n",
@@ -1331,16 +1328,6 @@ static int tm6000_open(struct file *file)
         dprintk(dev, V4L2_DEBUG_OPEN, "tm6000: open called (dev=%s)\n",
                 video_device_node_name(vdev));
 
-        list_for_each(list,&tm6000_corelist) {
-                h = list_entry(list, struct tm6000_core, tm6000_corelist);
-                if (h->vfd->minor == minor) {
-                        dev  = h;
-                        type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
-                }
-        }
-        if (NULL == dev)
-                return -ENODEV;
-
 
         /* If more than one user, mutex should be added */
         dev->users++;
@@ -1533,8 +1520,6 @@ int tm6000_v4l2_register(struct tm6000_core *dev)
         }
         dev->vfd = vfd;
 
-        list_add_tail(&dev->tm6000_corelist,&tm6000_corelist);
-
         /* init video dma queues */
         INIT_LIST_HEAD(&dev->vidq.active);
         INIT_LIST_HEAD(&dev->vidq.queued);
@@ -1542,6 +1527,7 @@ int tm6000_v4l2_register(struct tm6000_core *dev)
         memcpy (dev->vfd, &tm6000_template, sizeof(*(dev->vfd)));
         dev->vfd->debug=tm6000_debug;
         vfd->v4l2_dev = &dev->v4l2_dev;
+        video_set_drvdata(vfd, dev);
 
         ret = video_register_device(dev->vfd, VFL_TYPE_GRABBER, video_nr);
         printk(KERN_INFO "Trident TVMaster TM5600/TM6000/TM6010 USB2 board (Load status: %d)\n", ret);
@@ -1550,18 +1536,8 @@ int tm6000_v4l2_register(struct tm6000_core *dev)
 
 int tm6000_v4l2_unregister(struct tm6000_core *dev)
 {
-        struct tm6000_core *h;
-        struct list_head *pos, *tmp;
-
         video_unregister_device(dev->vfd);
 
-        list_for_each_safe(pos, tmp, &tm6000_corelist) {
-                h = list_entry(pos, struct tm6000_core, tm6000_corelist);
-                if (h == dev) {
-                        list_del(pos);
-                }
-        }
-
         return 0;
 }
 
diff --git a/drivers/staging/tm6000/tm6000.h b/drivers/staging/tm6000/tm6000.h
index b49c139c6b55..6812d6867d57 100644
--- a/drivers/staging/tm6000/tm6000.h
+++ b/drivers/staging/tm6000/tm6000.h
@@ -169,7 +169,6 @@ struct tm6000_core {
         struct i2c_client               i2c_client;
 
         /* video for linux */
-        struct list_head                tm6000_corelist;
         int                             users;
 
         /* various device info */