mirror of https://gitee.com/openkylin/linux.git
[media] usbvision: embed video_device
Embed the video_device struct to simplify the error handling and in order to (eventually) get rid of video_device_alloc/release. Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Hans Verkuil
Mauro Carvalho Chehab
parent
65b88c0be1
commit
2aa689dd80
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@ -471,7 +471,7 @@ static int vidioc_g_register(struct file *file, void *priv,
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/* NT100x has a 8-bit register space */
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err_code = usbvision_read_reg(usbvision, reg->reg&0xff);
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if (err_code < 0) {
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dev_err(&usbvision->vdev->dev,
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dev_err(&usbvision->vdev.dev,
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"%s: VIDIOC_DBG_G_REGISTER failed: error %d\n",
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__func__, err_code);
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return err_code;
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@ -490,7 +490,7 @@ static int vidioc_s_register(struct file *file, void *priv,
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/* NT100x has a 8-bit register space */
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err_code = usbvision_write_reg(usbvision, reg->reg & 0xff, reg->val);
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if (err_code < 0) {
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dev_err(&usbvision->vdev->dev,
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dev_err(&usbvision->vdev.dev,
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"%s: VIDIOC_DBG_S_REGISTER failed: error %d\n",
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__func__, err_code);
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return err_code;
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@ -1157,7 +1157,7 @@ static int usbvision_radio_open(struct file *file)
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if (mutex_lock_interruptible(&usbvision->v4l2_lock))
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return -ERESTARTSYS;
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if (usbvision->user) {
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dev_err(&usbvision->rdev->dev,
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dev_err(&usbvision->rdev.dev,
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"%s: Someone tried to open an already opened USBVision Radio!\n",
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__func__);
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err_code = -EBUSY;
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@ -1280,7 +1280,7 @@ static struct video_device usbvision_video_template = {
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.fops = &usbvision_fops,
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.ioctl_ops = &usbvision_ioctl_ops,
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.name = "usbvision-video",
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.release = video_device_release,
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.release = video_device_release_empty,
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.tvnorms = USBVISION_NORMS,
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};
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@ -1312,58 +1312,46 @@ static const struct v4l2_ioctl_ops usbvision_radio_ioctl_ops = {
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static struct video_device usbvision_radio_template = {
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.fops = &usbvision_radio_fops,
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.name = "usbvision-radio",
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.release = video_device_release,
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.release = video_device_release_empty,
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.ioctl_ops = &usbvision_radio_ioctl_ops,
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};
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static struct video_device *usbvision_vdev_init(struct usb_usbvision *usbvision,
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struct video_device *vdev_template,
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char *name)
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static void usbvision_vdev_init(struct usb_usbvision *usbvision,
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struct video_device *vdev,
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const struct video_device *vdev_template,
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const char *name)
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{
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struct usb_device *usb_dev = usbvision->dev;
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struct video_device *vdev;
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if (usb_dev == NULL) {
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dev_err(&usbvision->dev->dev,
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"%s: usbvision->dev is not set\n", __func__);
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return NULL;
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return;
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}
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vdev = video_device_alloc();
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if (NULL == vdev)
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return NULL;
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*vdev = *vdev_template;
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vdev->lock = &usbvision->v4l2_lock;
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vdev->v4l2_dev = &usbvision->v4l2_dev;
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snprintf(vdev->name, sizeof(vdev->name), "%s", name);
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video_set_drvdata(vdev, usbvision);
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return vdev;
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}
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/* unregister video4linux devices */
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static void usbvision_unregister_video(struct usb_usbvision *usbvision)
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{
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/* Radio Device: */
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if (usbvision->rdev) {
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if (video_is_registered(&usbvision->rdev)) {
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PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
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video_device_node_name(usbvision->rdev));
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if (video_is_registered(usbvision->rdev))
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video_unregister_device(usbvision->rdev);
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else
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video_device_release(usbvision->rdev);
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usbvision->rdev = NULL;
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video_device_node_name(&usbvision->rdev));
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video_unregister_device(&usbvision->rdev);
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}
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/* Video Device: */
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if (usbvision->vdev) {
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if (video_is_registered(&usbvision->vdev)) {
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PDEBUG(DBG_PROBE, "unregister %s [v4l2]",
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video_device_node_name(usbvision->vdev));
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if (video_is_registered(usbvision->vdev))
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video_unregister_device(usbvision->vdev);
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else
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video_device_release(usbvision->vdev);
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usbvision->vdev = NULL;
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video_device_node_name(&usbvision->vdev));
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video_unregister_device(&usbvision->vdev);
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}
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}
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@ -1371,28 +1359,22 @@ static void usbvision_unregister_video(struct usb_usbvision *usbvision)
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static int usbvision_register_video(struct usb_usbvision *usbvision)
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{
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/* Video Device: */
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usbvision->vdev = usbvision_vdev_init(usbvision,
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&usbvision_video_template,
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"USBVision Video");
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if (usbvision->vdev == NULL)
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goto err_exit;
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if (video_register_device(usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
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usbvision_vdev_init(usbvision, &usbvision->vdev,
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&usbvision_video_template, "USBVision Video");
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if (video_register_device(&usbvision->vdev, VFL_TYPE_GRABBER, video_nr) < 0)
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goto err_exit;
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printk(KERN_INFO "USBVision[%d]: registered USBVision Video device %s [v4l2]\n",
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usbvision->nr, video_device_node_name(usbvision->vdev));
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usbvision->nr, video_device_node_name(&usbvision->vdev));
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/* Radio Device: */
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if (usbvision_device_data[usbvision->dev_model].radio) {
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/* usbvision has radio */
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usbvision->rdev = usbvision_vdev_init(usbvision,
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&usbvision_radio_template,
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"USBVision Radio");
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if (usbvision->rdev == NULL)
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goto err_exit;
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if (video_register_device(usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
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usbvision_vdev_init(usbvision, &usbvision->rdev,
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&usbvision_radio_template, "USBVision Radio");
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if (video_register_device(&usbvision->rdev, VFL_TYPE_RADIO, radio_nr) < 0)
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goto err_exit;
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printk(KERN_INFO "USBVision[%d]: registered USBVision Radio device %s [v4l2]\n",
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usbvision->nr, video_device_node_name(usbvision->rdev));
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usbvision->nr, video_device_node_name(&usbvision->rdev));
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}
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/* all done */
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return 0;
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@ -1461,7 +1443,7 @@ static void usbvision_release(struct usb_usbvision *usbvision)
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usbvision->initialized = 0;
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usbvision_remove_sysfs(usbvision->vdev);
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usbvision_remove_sysfs(&usbvision->vdev);
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usbvision_unregister_video(usbvision);
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kfree(usbvision->alt_max_pkt_size);
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@ -1611,7 +1593,7 @@ static int usbvision_probe(struct usb_interface *intf,
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usbvision_configure_video(usbvision);
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usbvision_register_video(usbvision);
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usbvision_create_sysfs(usbvision->vdev);
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usbvision_create_sysfs(&usbvision->vdev);
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PDEBUG(DBG_PROBE, "success");
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return 0;
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@ -357,8 +357,8 @@ extern struct usb_device_id usbvision_table[];
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struct usb_usbvision {
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struct v4l2_device v4l2_dev;
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struct video_device *vdev; /* Video Device */
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struct video_device *rdev; /* Radio Device */
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struct video_device vdev; /* Video Device */
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struct video_device rdev; /* Radio Device */
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/* i2c Declaration Section*/
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struct i2c_adapter i2c_adap;
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