1 files changed, 21 insertions, 13 deletions

diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
index 0876fecc5f27..0abb186a9473 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);