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path: root/drivers/media/radio/radio-sf16fmi.c
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Diffstat (limited to 'drivers/media/radio/radio-sf16fmi.c')
-rw-r--r--drivers/media/radio/radio-sf16fmi.c34
1 files changed, 21 insertions, 13 deletions
diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
index 0d478f54a907..329c90bddadd 100644
--- a/drivers/media/radio/radio-sf16fmi.c
+++ b/drivers/media/radio/radio-sf16fmi.c
@@ -45,6 +45,7 @@ static struct v4l2_queryctrl radio_qctrl[] = {
struct fmi_device
{
+ unsigned long in_use;
int port;
int curvol; /* 1 or 0 */
unsigned long curfreq; /* freq in kHz */
@@ -146,8 +147,7 @@ static int vidioc_g_tuner(struct file *file, void *priv,
struct v4l2_tuner *v)
{
int mult;
- struct video_device *dev = video_devdata(file);
- struct fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
if (v->index > 0)
return -EINVAL;
@@ -175,8 +175,7 @@ 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 fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
if (!(fmi->flags & V4L2_TUNER_CAP_LOW))
f->frequency *= 1000;
@@ -193,8 +192,7 @@ 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 fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
f->type = V4L2_TUNER_RADIO;
f->frequency = fmi->curfreq;
@@ -221,8 +219,7 @@ 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 fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
@@ -235,8 +232,7 @@ 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 fmi_device *fmi = dev->priv;
+ struct fmi_device *fmi = video_drvdata(file);
switch (ctrl->id) {
case V4L2_CID_AUDIO_MUTE:
@@ -284,10 +280,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
static struct fmi_device fmi_unit;
+static int fmi_exclusive_open(struct inode *inode, struct file *file)
+{
+ return test_and_set_bit(0, &fmi_unit.in_use) ? -EBUSY : 0;
+}
+
+static int fmi_exclusive_release(struct inode *inode, struct file *file)
+{
+ clear_bit(0, &fmi_unit.in_use);
+ return 0;
+}
+
static const struct file_operations fmi_fops = {
.owner = THIS_MODULE,
- .open = video_exclusive_open,
- .release = video_exclusive_release,
+ .open = fmi_exclusive_open,
+ .release = fmi_exclusive_release,
.ioctl = video_ioctl2,
#ifdef CONFIG_COMPAT
.compat_ioctl = v4l_compat_ioctl32,
@@ -314,6 +321,7 @@ static struct video_device fmi_radio = {
.name = "SF16FMx radio",
.fops = &fmi_fops,
.ioctl_ops = &fmi_ioctl_ops,
+ .release = video_device_release_empty,
};
/* ladis: this is my card. does any other types exist? */
@@ -373,7 +381,7 @@ static int __init fmi_init(void)
fmi_unit.curvol = 0;
fmi_unit.curfreq = 0;
fmi_unit.flags = V4L2_TUNER_CAP_LOW;
- fmi_radio.priv = &fmi_unit;
+ video_set_drvdata(&fmi_radio, &fmi_unit);
mutex_init(&lock);