diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/media/video/cx18/cx18-streams.c | 2 | ||||
| -rw-r--r-- | drivers/media/video/ivtv/ivtv-streams.c | 2 | ||||
| -rw-r--r-- | drivers/media/video/v4l2-dev.c | 20 |
3 files changed, 21 insertions, 3 deletions
diff --git a/drivers/media/video/cx18/cx18-streams.c b/drivers/media/video/cx18/cx18-streams.c index 6c988b95adc6..7df513a2dba8 100644 --- a/drivers/media/video/cx18/cx18-streams.c +++ b/drivers/media/video/cx18/cx18-streams.c @@ -245,7 +245,7 @@ static int cx18_reg_dev(struct cx18 *cx, int type) video_set_drvdata(s->video_dev, s); /* Register device. First try the desired minor, then any free one. */ - ret = video_register_device(s->video_dev, vfl_type, num); + ret = video_register_device_no_warn(s->video_dev, vfl_type, num); if (ret < 0) { CX18_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", s->name, num); diff --git a/drivers/media/video/ivtv/ivtv-streams.c b/drivers/media/video/ivtv/ivtv-streams.c index 23400035240a..67699e3f2aaa 100644 --- a/drivers/media/video/ivtv/ivtv-streams.c +++ b/drivers/media/video/ivtv/ivtv-streams.c @@ -261,7 +261,7 @@ static int ivtv_reg_dev(struct ivtv *itv, int type) video_set_drvdata(s->vdev, s); /* Register device. First try the desired minor, then any free one. */ - if (video_register_device(s->vdev, vfl_type, num)) { + if (video_register_device_no_warn(s->vdev, vfl_type, num)) { IVTV_ERR("Couldn't register v4l2 device for %s (device node number %d)\n", s->name, num); video_device_release(s->vdev); diff --git a/drivers/media/video/v4l2-dev.c b/drivers/media/video/v4l2-dev.c index 4715f08157bc..500cbe9891ac 100644 --- a/drivers/media/video/v4l2-dev.c +++ b/drivers/media/video/v4l2-dev.c @@ -382,6 +382,8 @@ static int get_index(struct video_device *vdev) * @type: type of device to register * @nr: which device node number (0 == /dev/video0, 1 == /dev/video1, ... * -1 == first free) + * @warn_if_nr_in_use: warn if the desired device node number + * was already in use and another number was chosen instead. * * The registration code assigns minor numbers and device node numbers * based on the requested type and registers the new device node with @@ -401,7 +403,8 @@ static int get_index(struct video_device *vdev) * * %VFL_TYPE_RADIO - A radio card */ -int video_register_device(struct video_device *vdev, int type, int nr) +static int __video_register_device(struct video_device *vdev, int type, int nr, + int warn_if_nr_in_use) { int i = 0; int ret; @@ -547,6 +550,10 @@ int video_register_device(struct video_device *vdev, int type, int nr) reference to the device goes away. */ vdev->dev.release = v4l2_device_release; + if (nr != -1 && nr != vdev->num && warn_if_nr_in_use) + printk(KERN_WARNING "%s: requested %s%d, got %s%d\n", + __func__, name_base, nr, name_base, vdev->num); + /* Part 5: Activate this minor. The char device can now be used. */ mutex_lock(&videodev_lock); video_device[vdev->minor] = vdev; @@ -563,8 +570,19 @@ cleanup: vdev->minor = -1; return ret; } + +int video_register_device(struct video_device *vdev, int type, int nr) +{ + return __video_register_device(vdev, type, nr, 1); +} EXPORT_SYMBOL(video_register_device); +int video_register_device_no_warn(struct video_device *vdev, int type, int nr) +{ + return __video_register_device(vdev, type, nr, 0); +} +EXPORT_SYMBOL(video_register_device_no_warn); + /** * video_unregister_device - unregister a video4linux device * @vdev: the device to unregister |