static int radio_nr = -1;
module_param(radio_nr, int, 0);
+static unsigned long in_use;
#define FREQ_LO 50*16000
#define FREQ_HI 150*16000
#define BITS2FREQ(x) ((x) * FREQ_STEP - FREQ_IF)
-static const struct file_operations maxiradio_fops = {
+static int maxiradio_exclusive_open(struct file *file)
+{
+ return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int maxiradio_exclusive_release(struct file *file)
+{
+ clear_bit(0, &in_use);
+ return 0;
+}
+
+static const struct v4l2_file_operations maxiradio_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = maxiradio_exclusive_open,
+ .release = maxiradio_exclusive_release,
.ioctl = video_ioctl2,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = v4l_compat_ioctl32,
-#endif
- .llseek = no_llseek,
};
static struct radio_device
static int vidioc_g_tuner (struct file *file, void *priv,
struct v4l2_tuner *v)
{
- struct video_device *dev = video_devdata(file);
- struct radio_device *card=dev->priv;
+ struct radio_device *card = 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 radio_device *card=dev->priv;
+ struct radio_device *card = video_drvdata(file);
if (f->frequency < FREQ_LO || f->frequency > FREQ_HI) {
dprintk(1, "radio freq (%d.%02d MHz) out of range (%d-%d)\n",
static int vidioc_g_frequency (struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct video_device *dev = video_devdata(file);
- struct radio_device *card=dev->priv;
+ struct radio_device *card = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = card->freq;
static int vidioc_g_ctrl (struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct video_device *dev = video_devdata(file);
- struct radio_device *card=dev->priv;
+ struct radio_device *card = 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 radio_device *card=dev->priv;
+ struct radio_device *card = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
};
static struct video_device maxiradio_radio = {
- .name = "Maxi Radio FM2000 radio",
- .fops = &maxiradio_fops,
- .ioctl_ops = &maxiradio_ioctl_ops,
+ .name = "Maxi Radio FM2000 radio",
+ .fops = &maxiradio_fops,
+ .ioctl_ops = &maxiradio_ioctl_ops,
+ .release = video_device_release_empty,
};
static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
radio_unit.io = pci_resource_start(pdev, 0);
mutex_init(&radio_unit.lock);
- maxiradio_radio.priv = &radio_unit;
+ video_set_drvdata(&maxiradio_radio, &radio_unit);
if (video_register_device(&maxiradio_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
printk("radio-maxiradio: can't register device!");