static int keepmuted = 1;
static int initmute = 1;
static int radio_nr = -1;
+static unsigned long in_use;
module_param(io, int, 0444);
MODULE_PARM_DESC(io, "Force I/O port for the GemTek Radio card if automatic "
}
};
+static int gemtek_exclusive_open(struct inode *inode, struct file *file)
+{
+ return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int gemtek_exclusive_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &in_use);
+ return 0;
+}
+
static const struct file_operations gemtek_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = gemtek_exclusive_open,
+ .release = gemtek_exclusive_release,
.ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
static int vidioc_s_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct video_device *dev = video_devdata(file);
- struct gemtek_device *rt = dev->priv;
+ struct gemtek_device *rt = video_drvdata(file);
gemtek_setfreq(rt, f->frequency);
static int vidioc_g_frequency(struct file *file, void *priv,
struct v4l2_frequency *f)
{
- struct video_device *dev = video_devdata(file);
- struct gemtek_device *rt = dev->priv;
+ struct gemtek_device *rt = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = rt->lastfreq;
static int vidioc_g_ctrl(struct file *file, void *priv,
struct v4l2_control *ctrl)
{
- struct video_device *dev = video_devdata(file);
- struct gemtek_device *rt = dev->priv;
+ struct gemtek_device *rt = 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 gemtek_device *rt = dev->priv;
+ struct gemtek_device *rt = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
};
static struct video_device gemtek_radio = {
- .name = "GemTek Radio card",
- .fops = &gemtek_fops,
- .ioctl_ops = &gemtek_ioctl_ops,
+ .name = "GemTek Radio card",
+ .fops = &gemtek_fops,
+ .ioctl_ops = &gemtek_ioctl_ops,
+ .release = video_device_release_empty,
};
/*
return -EINVAL;
}
- gemtek_radio.priv = &gemtek_unit;
+ video_set_drvdata(&gemtek_radio, &gemtek_unit);
if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
release_region(io, 1);