diff options
Diffstat (limited to 'linux/drivers/media/radio/radio-terratec.c')
| -rw-r--r-- | linux/drivers/media/radio/radio-terratec.c | 37 |
1 files changed, 22 insertions, 15 deletions
diff --git a/linux/drivers/media/radio/radio-terratec.c b/linux/drivers/media/radio/radio-terratec.c index 768582f53..3066b08f0 100644 --- a/linux/drivers/media/radio/radio-terratec.c +++ b/linux/drivers/media/radio/radio-terratec.c @@ -80,6 +80,7 @@ static spinlock_t lock; struct tt_device { + unsigned long in_use; int port; int curvol; unsigned long curfreq; @@ -221,8 +222,7 @@ 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 tt_device *tt = dev->priv; + struct tt_device *tt = video_drvdata(file); if (v->index > 0) return -EINVAL; @@ -249,8 +249,7 @@ static int vidioc_s_tuner(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 tt_device *tt = dev->priv; + struct tt_device *tt = video_drvdata(file); tt->curfreq = f->frequency; tt_setfreq(tt, tt->curfreq); @@ -260,8 +259,7 @@ 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 tt_device *tt = dev->priv; + struct tt_device *tt = video_drvdata(file); f->type = V4L2_TUNER_RADIO; f->frequency = tt->curfreq; @@ -286,8 +284,7 @@ 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 tt_device *tt = dev->priv; + struct tt_device *tt = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: @@ -306,8 +303,7 @@ 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 tt_device *tt = dev->priv; + struct tt_device *tt = video_drvdata(file); switch (ctrl->id) { case V4L2_CID_AUDIO_MUTE: @@ -357,10 +353,21 @@ static int vidioc_s_audio(struct file *file, void *priv, static struct tt_device terratec_unit; +static int terratec_exclusive_open(struct inode *inode, struct file *file) +{ + return test_and_set_bit(0, &terratec_unit.in_use) ? -EBUSY : 0; +} + +static int terratec_exclusive_release(struct inode *inode, struct file *file) +{ + clear_bit(0, &terratec_unit.in_use); + return 0; +} + static const struct file_operations terratec_fops = { .owner = THIS_MODULE, - .open = video_exclusive_open, - .release = video_exclusive_release, + .open = terratec_exclusive_open, + .release = terratec_exclusive_release, .ioctl = video_ioctl2, #ifdef CONFIG_COMPAT .compat_ioctl = v4l_compat_ioctl32, @@ -387,6 +394,7 @@ static struct video_device terratec_radio = { .name = "TerraTec ActiveRadio", .fops = &terratec_fops, .ioctl_ops = &terratec_ioctl_ops, + .release = video_device_release_empty, }; static int __init terratec_init(void) @@ -402,12 +410,11 @@ static int __init terratec_init(void) return -EBUSY; } - terratec_radio.priv=&terratec_unit; + video_set_drvdata(&terratec_radio, &terratec_unit); spin_lock_init(&lock); - if(video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr)==-1) - { + if (video_register_device(&terratec_radio, VFL_TYPE_RADIO, radio_nr) < 0) { release_region(io,2); return -EINVAL; } |