diff options
Diffstat (limited to 'drivers/media/radio/radio-terratec.c')
| -rw-r--r-- | drivers/media/radio/radio-terratec.c | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c index 0876fecc5f27..0abb186a9473 100644 --- a/drivers/media/radio/radio-terratec.c +++ b/drivers/media/radio/radio-terratec.c @@ -79,6 +79,7 @@ static spinlock_t lock; struct tt_device { + unsigned long in_use; int port; int curvol; unsigned long curfreq; @@ -220,8 +221,7 @@ 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; @@ -248,8 +248,7 @@ 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); @@ -259,8 +258,7 @@ 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; @@ -285,8 +283,7 @@ 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: @@ -305,8 +302,7 @@ 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: @@ -356,10 +352,21 @@ 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, @@ -386,6 +393,7 @@ 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) @@ -401,7 +409,7 @@ static int __init terratec_init(void) return -EBUSY; } - terratec_radio.priv=&terratec_unit; + video_set_drvdata(&terratec_radio, &terratec_unit); spin_lock_init(&lock); |