diff options
Diffstat (limited to 'drivers/media/v4l2-core/v4l2-dev.c')
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-dev.c | 40 |
1 files changed, 17 insertions, 23 deletions
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c index 5923c5d..c8859d6 100644 --- a/drivers/media/v4l2-core/v4l2-dev.c +++ b/drivers/media/v4l2-core/v4l2-dev.c @@ -495,8 +495,8 @@ static const struct file_operations v4l2_fops = { }; /** - * get_index - assign stream index number based on parent device - * @vdev: video_device to assign index number to, vdev->parent should be assigned + * get_index - assign stream index number based on v4l2_dev + * @vdev: video_device to assign index number to, vdev->v4l2_dev should be assigned * * Note that when this is called the new device has not yet been registered * in the video_device array, but it was able to obtain a minor number. @@ -514,15 +514,11 @@ static int get_index(struct video_device *vdev) static DECLARE_BITMAP(used, VIDEO_NUM_DEVICES); int i; - /* Some drivers do not set the parent. In that case always return 0. */ - if (vdev->parent == NULL) - return 0; - bitmap_zero(used, VIDEO_NUM_DEVICES); for (i = 0; i < VIDEO_NUM_DEVICES; i++) { if (video_device[i] != NULL && - video_device[i]->parent == vdev->parent) { + video_device[i]->v4l2_dev == vdev->v4l2_dev) { set_bit(video_device[i]->index, used); } } @@ -596,7 +592,6 @@ static void determine_valid_ioctls(struct video_device *vdev) set_bit(_IOC_NR(VIDIOC_DBG_G_REGISTER), valid_ioctls); set_bit(_IOC_NR(VIDIOC_DBG_S_REGISTER), valid_ioctls); #endif - SET_VALID_IOCTL(ops, VIDIOC_DBG_G_CHIP_IDENT, vidioc_g_chip_ident); /* yes, really vidioc_subscribe_event */ SET_VALID_IOCTL(ops, VIDIOC_DQEVENT, vidioc_subscribe_event); SET_VALID_IOCTL(ops, VIDIOC_SUBSCRIBE_EVENT, vidioc_subscribe_event); @@ -675,9 +670,8 @@ static void determine_valid_ioctls(struct video_device *vdev) SET_VALID_IOCTL(ops, VIDIOC_PREPARE_BUF, vidioc_prepare_buf); if (ops->vidioc_s_std) set_bit(_IOC_NR(VIDIOC_ENUMSTD), valid_ioctls); - if (ops->vidioc_g_std || vdev->current_norm) - set_bit(_IOC_NR(VIDIOC_G_STD), valid_ioctls); SET_VALID_IOCTL(ops, VIDIOC_S_STD, vidioc_s_std); + SET_VALID_IOCTL(ops, VIDIOC_G_STD, vidioc_g_std); if (is_rx) { SET_VALID_IOCTL(ops, VIDIOC_QUERYSTD, vidioc_querystd); SET_VALID_IOCTL(ops, VIDIOC_ENUMINPUT, vidioc_enum_input); @@ -705,7 +699,7 @@ static void determine_valid_ioctls(struct video_device *vdev) if (ops->vidioc_cropcap || ops->vidioc_g_selection) set_bit(_IOC_NR(VIDIOC_CROPCAP), valid_ioctls); if (ops->vidioc_g_parm || (vdev->vfl_type == VFL_TYPE_GRABBER && - (ops->vidioc_g_std || vdev->current_norm))) + ops->vidioc_g_std)) set_bit(_IOC_NR(VIDIOC_G_PARM), valid_ioctls); SET_VALID_IOCTL(ops, VIDIOC_S_PARM, vidioc_s_parm); SET_VALID_IOCTL(ops, VIDIOC_S_DV_TIMINGS, vidioc_s_dv_timings); @@ -777,6 +771,9 @@ int __video_register_device(struct video_device *vdev, int type, int nr, /* the release callback MUST be present */ if (WARN_ON(!vdev->release)) return -EINVAL; + /* the v4l2_dev pointer MUST be present */ + if (WARN_ON(!vdev->v4l2_dev)) + return -EINVAL; /* v4l2_fh support */ spin_lock_init(&vdev->fh_lock); @@ -804,16 +801,14 @@ int __video_register_device(struct video_device *vdev, int type, int nr, vdev->vfl_type = type; vdev->cdev = NULL; - if (vdev->v4l2_dev) { - if (vdev->v4l2_dev->dev) - vdev->parent = vdev->v4l2_dev->dev; - if (vdev->ctrl_handler == NULL) - vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler; - /* If the prio state pointer is NULL, then use the v4l2_device - prio state. */ - if (vdev->prio == NULL) - vdev->prio = &vdev->v4l2_dev->prio; - } + if (vdev->dev_parent == NULL) + vdev->dev_parent = vdev->v4l2_dev->dev; + if (vdev->ctrl_handler == NULL) + vdev->ctrl_handler = vdev->v4l2_dev->ctrl_handler; + /* If the prio state pointer is NULL, then use the v4l2_device + prio state. */ + if (vdev->prio == NULL) + vdev->prio = &vdev->v4l2_dev->prio; /* Part 2: find a free minor, device node number and device index. */ #ifdef CONFIG_VIDEO_FIXED_MINOR_RANGES @@ -898,8 +893,7 @@ int __video_register_device(struct video_device *vdev, int type, int nr, /* Part 4: register the device with sysfs */ vdev->dev.class = &video_class; vdev->dev.devt = MKDEV(VIDEO_MAJOR, vdev->minor); - if (vdev->parent) - vdev->dev.parent = vdev->parent; + vdev->dev.parent = vdev->dev_parent; dev_set_name(&vdev->dev, "%s%d", name_base, vdev->num); ret = device_register(&vdev->dev); if (ret < 0) { |