1 files changed, 24 insertions, 16 deletions

diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
index 0cc6fcb041fd..c777a17b00bc 100644
--- a/drivers/media/radio/radio-maxiradio.c
+++ b/drivers/media/radio/radio-maxiradio.c
@@ -85,6 +85,7 @@ static const int clk = 1, data = 2, wren = 4, mo_st = 8, power = 16 ;
 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
@@ -99,10 +100,21 @@ module_param(radio_nr, int, 0);
 #define BITS2FREQ(x)    ((x) * FREQ_STEP - FREQ_IF)
 
 
+static int maxiradio_exclusive_open(struct inode *inode, struct file *file)
+{
+        return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int maxiradio_exclusive_release(struct inode *inode, struct file *file)
+{
+        clear_bit(0, &in_use);
+        return 0;
+}
+
 static const struct 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,
@@ -219,8 +231,7 @@ 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 radio_device *card=dev->priv;
+        struct radio_device *card = video_drvdata(file);
 
         if (v->index > 0)
                 return -EINVAL;
@@ -290,8 +301,7 @@ static int vidioc_s_audio (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 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",
@@ -312,8 +322,7 @@ 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 radio_device *card=dev->priv;
+        struct radio_device *card = video_drvdata(file);
 
         f->type = V4L2_TUNER_RADIO;
         f->frequency = card->freq;
@@ -343,8 +352,7 @@ 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 radio_device *card=dev->priv;
+        struct radio_device *card = video_drvdata(file);
 
         switch (ctrl->id) {
                 case V4L2_CID_AUDIO_MUTE:
@@ -358,8 +366,7 @@ 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 radio_device *card=dev->priv;
+        struct radio_device *card = video_drvdata(file);
 
         switch (ctrl->id) {
                 case V4L2_CID_AUDIO_MUTE:
@@ -390,9 +397,10 @@ static const struct v4l2_ioctl_ops maxiradio_ioctl_ops = {
 };
 
 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)
@@ -408,7 +416,7 @@ static int __devinit maxiradio_init_one(struct pci_dev *pdev, const struct pci_d
 
         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!");