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

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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>
This commit is contained in:
Mauro Carvalho Chehab 2010-05-18 04:27:27 -03:00
parent 6b46c3977c
commit e8d0416796
3 changed files with 2 additions and 28 deletions
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1
drivers/staging/tm6000/tm6000-cards.c
View file

@ -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;

28
drivers/staging/tm6000/tm6000-video.c
View file

@ -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;
}

1
drivers/staging/tm6000/tm6000.h
View file

@ -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 */