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path: root/drivers/media/radio/radio-terratec.c
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Diffstat (limited to 'drivers/media/radio/radio-terratec.c')
-rw-r--r--drivers/media/radio/radio-terratec.c34
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
index 0876fec..0abb186 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);
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