1 files changed, 24 insertions, 16 deletions

diff --git a/linux/drivers/media/radio/radio-gemtek.c b/linux/drivers/media/radio/radio-gemtek.c
index bf1837ab2..003c7b2f7 100644
--- a/linux/drivers/media/radio/radio-gemtek.c
+++ b/linux/drivers/media/radio/radio-gemtek.c
@@ -58,6 +58,7 @@ static int shutdown	= 1;
 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 "
@@ -394,10 +395,21 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 	}
 };
 
+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,
@@ -448,8 +460,7 @@ static int vidioc_s_tuner(struct file *file, void *priv, struct v4l2_tuner *v)
 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);
 
@@ -459,8 +470,7 @@ 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 gemtek_device *rt = dev->priv;
+	struct gemtek_device *rt = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = rt->lastfreq;
@@ -484,8 +494,7 @@ 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 gemtek_device *rt = dev->priv;
+	struct gemtek_device *rt = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -504,8 +513,7 @@ 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 gemtek_device *rt = dev->priv;
+	struct gemtek_device *rt = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -570,9 +578,10 @@ static const struct v4l2_ioctl_ops gemtek_ioctl_ops = {
 };
 
 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,
 };
 
 /*
@@ -611,10 +620,9 @@ static int __init gemtek_init(void)
 		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) == -1) {
+	if (video_register_device(&gemtek_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
 		release_region(io, 1);
 		return -EBUSY;
 	}