/* this should be static vars for module size */
struct fmr2_device
{
+ unsigned long in_use;
int port;
int curvol; /* 0-15 */
int mute;
struct v4l2_tuner *v)
{
int mult;
- struct video_device *dev = video_devdata(file);
- struct fmr2_device *fmr2 = dev->priv;
+ struct fmr2_device *fmr2 = video_drvdata(file);
if (v->index > 0)
return -EINVAL;
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct video_device *dev = video_devdata(file);
- struct fmr2_device *fmr2 = dev->priv;
+ struct fmr2_device *fmr2 = video_drvdata(file);
if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
f->frequency *= 1000;
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct video_device *dev = video_devdata(file);
- struct fmr2_device *fmr2 = dev->priv;
+ struct fmr2_device *fmr2 = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = fmr2->curfreq;
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct video_device *dev = video_devdata(file);
- struct fmr2_device *fmr2 = dev->priv;
+ struct fmr2_device *fmr2 = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
static int vidioc_s_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct video_device *dev = video_devdata(file);
- struct fmr2_device *fmr2 = dev->priv;
+ struct fmr2_device *fmr2 = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
static struct fmr2_device fmr2_unit;
+static int fmr2_exclusive_open(struct inode *inode, struct file *file)
+{
+ return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0;
+}
+
+static int fmr2_exclusive_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &fmr2_unit.in_use);
+ return 0;
+}
+
static const struct file_operations fmr2_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = fmr2_exclusive_open,
+ .release = fmr2_exclusive_release,
.ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
.name = "SF16FMR2 radio",
.fops = &fmr2_fops,
.ioctl_ops = &fmr2_ioctl_ops,
+ .release = video_device_release_empty,
};
static int __init fmr2_init(void)
fmr2_unit.stereo = 1;
fmr2_unit.flags = V4L2_TUNER_CAP_LOW;
fmr2_unit.card_type = 0;
- fmr2_radio.priv = &fmr2_unit;
+ video_set_drvdata(&fmr2_radio, &fmr2_unit);
mutex_init(&lock);