diff options
Diffstat (limited to 'drivers/media/radio/radio-aztech.c')
| -rw-r--r-- | drivers/media/radio/radio-aztech.c | 43 |
1 files changed, 25 insertions, 18 deletions
diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c index 3fe5504428c..d7848957323 100644 --- a/drivers/media/radio/radio-aztech.c +++ b/drivers/media/radio/radio-aztech.c @@ -70,6 +70,7 @@ static struct mutex lock; struct az_device { + unsigned long in_use; int curvol; unsigned long curfreq; int stereo; @@ -195,8 +196,7 @@ static int vidioc_querycap (struct file *file, void *priv, static int vidioc_g_tuner (struct file *file, void *priv, struct v4l2_tuner *v) { - struct video_device *dev = video_devdata(file); - struct az_device *az = dev->priv; + struct az_device *az = video_drvdata(file); if (v->index > 0) return -EINVAL; @@ -264,8 +264,7 @@ static int vidioc_s_audio (struct file *file, void *priv, static int vidioc_s_frequency (struct file *file, void *priv, struct v4l2_frequency *f) { - struct video_device *dev = video_devdata(file); - struct az_device *az = dev->priv; + struct az_device *az = video_drvdata(file); az->curfreq = f->frequency; az_setfreq(az, az->curfreq); @@ -275,8 +274,7 @@ static int vidioc_s_frequency (struct file *file, void *priv, static int vidioc_g_frequency (struct file *file, void *priv, struct v4l2_frequency *f) { - struct video_device *dev = video_devdata(file); - struct az_device *az = dev->priv; + struct az_device *az = video_drvdata(file); f->type = V4L2_TUNER_RADIO; f->frequency = az->curfreq; @@ -302,8 +300,7 @@ static int vidioc_queryctrl (struct file *file, void *priv, static int vidioc_g_ctrl (struct file *file, void *priv, struct v4l2_control *ctrl) { - struct video_device *dev = video_devdata(file); - struct az_device *az = dev->priv; + struct az_device *az = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: @@ -322,8 +319,7 @@ static int vidioc_g_ctrl (struct file *file, void *priv, static int vidioc_s_ctrl (struct file *file, void *priv, struct v4l2_control *ctrl) { - struct video_device *dev = video_devdata(file); - struct az_device *az = dev->priv; + struct az_device *az = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: @@ -342,10 +338,21 @@ static int vidioc_s_ctrl (struct file *file, void *priv, static struct az_device aztech_unit; +static int aztech_exclusive_open(struct inode *inode, struct file *file) +{ + return test_and_set_bit(0, &aztech_unit.in_use) ? -EBUSY : 0; +} + +static int aztech_exclusive_release(struct inode *inode, struct file *file) +{ + clear_bit(0, &aztech_unit.in_use); + return 0; +} + static const struct file_operations aztech_fops = { .owner = THIS_MODULE, - .open = video_exclusive_open, - .release = video_exclusive_release, + .open = aztech_exclusive_open, + .release = aztech_exclusive_release, .ioctl = video_ioctl2, #ifdef CONFIG_COMPAT .compat_ioctl = v4l_compat_ioctl32, @@ -369,9 +376,10 @@ static const struct v4l2_ioctl_ops aztech_ioctl_ops = { }; static struct video_device aztech_radio = { - .name = "Aztech radio", - .fops = &aztech_fops, - .ioctl_ops = &aztech_ioctl_ops, + .name = "Aztech radio", + .fops = &aztech_fops, + .ioctl_ops = &aztech_ioctl_ops, + .release = video_device_release_empty, }; module_param_named(debug,aztech_radio.debug, int, 0644); @@ -392,10 +400,9 @@ static int __init aztech_init(void) } mutex_init(&lock); - aztech_radio.priv=&aztech_unit; + video_set_drvdata(&aztech_radio, &aztech_unit); - if(video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr)==-1) - { + if (video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr) < 0) { release_region(io,2); return -EINVAL; } |