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authorLaurent Pinchart <laurent.pinchart@ideasonboard.com>2009-12-10 11:44:04 -0200
committerMauro Carvalho Chehab <mchehab@redhat.com>2009-12-16 00:17:56 -0200
commit63b0d5ad20365edf8baf96cdbb8e7faf62501286 (patch)
tree9a12041cab48051834ee67d0de358443464e5d94 /drivers/media/video/s2255drv.c
parentf0813b4c9f7ffbeaddcba1c08a1812f7ff30e1b7 (diff)
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: removed tm6000 changes as tm6000 is not ready yet for submission even on staging] Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/s2255drv.c')
-rw-r--r--drivers/media/video/s2255drv.c35
1 files changed, 9 insertions, 26 deletions
diff --git a/drivers/media/video/s2255drv.c b/drivers/media/video/s2255drv.c
index 4201abcf8f63..0a77108ee06f 100644
--- a/drivers/media/video/s2255drv.c
+++ b/drivers/media/video/s2255drv.c
@@ -233,7 +233,6 @@ struct s2255_dev {
struct s2255_dmaqueue vidq[MAX_CHANNELS];
struct video_device *vdev[MAX_CHANNELS];
- struct list_head s2255_devlist;
struct timer_list timer;
struct s2255_fw *fw_data;
struct s2255_pipeinfo pipes[MAX_PIPE_BUFFERS];
@@ -313,8 +312,6 @@ struct s2255_fh {
/* Channels on box are in reverse order */
static unsigned long G_chnmap[MAX_CHANNELS] = {3, 2, 1, 0};
-static LIST_HEAD(s2255_devlist);
-
static int debug;
static int *s2255_debug = &debug;
@@ -1534,31 +1531,22 @@ static int vidioc_s_parm(struct file *file, void *priv,
static int s2255_open(struct file *file)
{
int minor = video_devdata(file)->minor;
- struct s2255_dev *h, *dev = NULL;
+ struct video_device *vdev = video_devdata(file);
+ struct s2255_dev *dev = video_drvdata(file);
struct s2255_fh *fh;
- struct list_head *list;
- enum v4l2_buf_type type = 0;
+ enum v4l2_buf_type type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
int i = 0;
int cur_channel = -1;
int state;
dprintk(1, "s2255: open called (minor=%d)\n", minor);
lock_kernel();
- list_for_each(list, &s2255_devlist) {
- h = list_entry(list, struct s2255_dev, s2255_devlist);
- for (i = 0; i < MAX_CHANNELS; i++) {
- if (h->vdev[i]->minor == minor) {
- cur_channel = i;
- dev = h;
- type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
- }
- }
- }
- if ((NULL == dev) || (cur_channel == -1)) {
- unlock_kernel();
- printk(KERN_INFO "s2255: openv4l no dev\n");
- return -ENODEV;
+ for (i = 0; i < MAX_CHANNELS; i++) {
+ if (dev->vdev[i] == vdev) {
+ cur_channel = i;
+ break;
+ }
}
if (atomic_read(&dev->fw_data->fw_state) == S2255_FW_DISCONNECTING) {
@@ -1699,7 +1687,6 @@ static unsigned int s2255_poll(struct file *file,
static void s2255_destroy(struct kref *kref)
{
struct s2255_dev *dev = to_s2255_dev(kref);
- struct list_head *list;
int i;
if (!dev) {
printk(KERN_ERR "s2255drv: kref problem\n");
@@ -1733,10 +1720,6 @@ static void s2255_destroy(struct kref *kref)
usb_put_dev(dev->udev);
dprintk(1, "%s", __func__);
- while (!list_empty(&s2255_devlist)) {
- list = s2255_devlist.next;
- list_del(list);
- }
mutex_unlock(&dev->open_lock);
kfree(dev);
}
@@ -1843,7 +1826,6 @@ static int s2255_probe_v4l(struct s2255_dev *dev)
int cur_nr = video_nr;
/* initialize all video 4 linux */
- list_add_tail(&dev->s2255_devlist, &s2255_devlist);
/* register 4 video devices */
for (i = 0; i < MAX_CHANNELS; i++) {
INIT_LIST_HEAD(&dev->vidq[i].active);
@@ -1853,6 +1835,7 @@ static int s2255_probe_v4l(struct s2255_dev *dev)
dev->vdev[i] = video_device_alloc();
memcpy(dev->vdev[i], &template, sizeof(struct video_device));
dev->vdev[i]->parent = &dev->interface->dev;
+ video_set_drvdata(dev->vdev[i], dev);
if (video_nr == -1)
ret = video_register_device(dev->vdev[i],
VFL_TYPE_GRABBER,