Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-2.6: (313 commits)
  V4L/DVB (9186): Added support for Prof 7300 DVB-S/S2 cards
  V4L/DVB (9185): S2API: Ensure we have a reasonable ROLLOFF default
  V4L/DVB (9184): cx24116: Change the default SNR units back to percentage by default.
  V4L/DVB (9183): S2API: Return error of the caller provides 0 commands.
  V4L/DVB (9182): S2API: Added support for DTV_HIERARCHY
  V4L/DVB (9181): S2API: Add support fot DTV_GUARD_INTERVAL and DTV_TRANSMISSION_MODE
  V4L/DVB (9180): S2API: Added support for DTV_CODE_RATE_HP/LP
  V4L/DVB (9179): S2API: frontend.h cleanup
  V4L/DVB (9178): cx24116: Add module parameter to return SNR as ESNO.
  V4L/DVB (9177): S2API: Change _8PSK / _16APSK to PSK_8 and APSK_16
  V4L/DVB (9176): Add support for DvbWorld USB cards with STV0288 demodulator.
  V4L/DVB (9175): Remove NULL pointer in stb6000 driver.
  V4L/DVB (9174): Allow custom inittab for ST STV0288 demodulator.
  V4L/DVB (9173): S2API: Remove the hardcoded command limit during validation
  V4L/DVB (9172): S2API: Bugfix related to DVB-S / DVB-S2 tuning for the legacy API.
  V4L/DVB (9171): S2API: Stop an OOPS if illegal commands are dumped in S2API.
  V4L/DVB (9170): cx24116: Sanity checking to data input via S2API to the cx24116 demod.
  V4L/DVB (9169): uvcvideo: Support two new Bison Electronics webcams.
  V4L/DVB (9168): Add support for MSI TV@nywhere Plus remote
  V4L/DVB: v4l2-dev: remove duplicated #include
  ...

19 files changed, 965 insertions, 195 deletions

diff --git a/drivers/media/radio/Kconfig b/drivers/media/radio/Kconfig
index 1b41b3f77cf..e51d707e58d 100644
--- a/drivers/media/radio/Kconfig
+++ b/drivers/media/radio/Kconfig
@@ -361,4 +361,16 @@ config USB_SI470X
 	  To compile this driver as a module, choose M here: the
 	  module will be called radio-silabs.
 
+config USB_MR800
+	tristate "AverMedia MR 800 USB FM radio support"
+	depends on USB && VIDEO_V4L2
+	---help---
+	  Say Y here if you want to connect this type of radio to your
+	  computer's USB port. Note that the audio is not digital, and
+	  you must connect the line out connector to a sound card or a
+	  set of speakers.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called radio-mr800.
+
 endif # RADIO_ADAPTERS
diff --git a/drivers/media/radio/Makefile b/drivers/media/radio/Makefile
index 7ca71ab96b4..240ec63cdaf 100644
--- a/drivers/media/radio/Makefile
+++ b/drivers/media/radio/Makefile
@@ -18,5 +18,6 @@ obj-$(CONFIG_RADIO_TRUST) += radio-trust.o
 obj-$(CONFIG_RADIO_MAESTRO) += radio-maestro.o
 obj-$(CONFIG_USB_DSBR) += dsbr100.o
 obj-$(CONFIG_USB_SI470X) += radio-si470x.o
+obj-$(CONFIG_USB_MR800) += radio-mr800.o
 
 EXTRA_CFLAGS += -Isound
diff --git a/drivers/media/radio/dsbr100.c b/drivers/media/radio/dsbr100.c
index 70c65a74592..66783fffe4c 100644
--- a/drivers/media/radio/dsbr100.c
+++ b/drivers/media/radio/dsbr100.c
@@ -274,7 +274,7 @@ static int vidioc_querycap(struct file *file, void *priv,
 static int vidioc_g_tuner(struct file *file, void *priv,
 				struct v4l2_tuner *v)
 {
-	struct dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+	struct dsbr100_device *radio = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -306,7 +306,7 @@ 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 dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+	struct dsbr100_device *radio = video_drvdata(file);
 
 	radio->curfreq = f->frequency;
 	if (dsbr100_setfreq(radio, radio->curfreq)==-1)
@@ -317,7 +317,7 @@ 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 dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+	struct dsbr100_device *radio = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = radio->curfreq;
@@ -342,7 +342,7 @@ static int vidioc_queryctrl(struct file *file, void *priv,
 static int vidioc_g_ctrl(struct file *file, void *priv,
 				struct v4l2_control *ctrl)
 {
-	struct dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+	struct dsbr100_device *radio = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -355,16 +355,20 @@ 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 dsbr100_device *radio = video_get_drvdata(video_devdata(file));
+	struct dsbr100_device *radio = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
 		if (ctrl->value) {
-			if (dsbr100_stop(radio)==-1)
+			if (dsbr100_stop(radio) == -1) {
 				warn("Radio did not respond properly");
+				return -EBUSY;
+			}
 		} else {
-			if (dsbr100_start(radio)==-1)
+			if (dsbr100_start(radio) == -1) {
 				warn("Radio did not respond properly");
+				return -EBUSY;
+			}
 		}
 		return 0;
 	}
@@ -405,23 +409,26 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static int usb_dsbr100_open(struct inode *inode, struct file *file)
 {
-	struct dsbr100_device *radio=video_get_drvdata(video_devdata(file));
+	struct dsbr100_device *radio = video_drvdata(file);
 
+	lock_kernel();
 	radio->users = 1;
 	radio->muted = 1;
 
 	if (dsbr100_start(radio)<0) {
 		warn("Radio did not start up properly");
 		radio->users = 0;
+		unlock_kernel();
 		return -EIO;
 	}
 	dsbr100_setfreq(radio, radio->curfreq);
+	unlock_kernel();
 	return 0;
 }
 
 static int usb_dsbr100_close(struct inode *inode, struct file *file)
 {
-	struct dsbr100_device *radio=video_get_drvdata(video_devdata(file));
+	struct dsbr100_device *radio = video_drvdata(file);
 
 	if (!radio)
 		return -ENODEV;
@@ -507,7 +514,8 @@ static int usb_dsbr100_probe(struct usb_interface *intf,
 static int __init dsbr100_init(void)
 {
 	int retval = usb_register(&usb_dsbr100_driver);
-	info(DRIVER_VERSION ":" DRIVER_DESC);
+	printk(KERN_INFO KBUILD_MODNAME ": " DRIVER_VERSION ":"
+	       DRIVER_DESC "\n");
 	return retval;
 }
 
diff --git a/drivers/media/radio/radio-aimslab.c b/drivers/media/radio/radio-aimslab.c
index 1f064f4b32d..9305e958fc6 100644
--- a/drivers/media/radio/radio-aimslab.c
+++ b/drivers/media/radio/radio-aimslab.c
@@ -51,6 +51,7 @@ static struct mutex lock;
 
 struct rt_device
 {
+	unsigned long in_use;
 	int port;
 	int curvol;
 	unsigned long curfreq;
@@ -245,8 +246,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -273,8 +273,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	rt->curfreq = f->frequency;
 	rt_setfreq(rt, rt->curfreq);
@@ -284,8 +283,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = rt->curfreq;
@@ -310,8 +308,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -327,8 +324,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -378,10 +374,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct rt_device rtrack_unit;
 
+static int rtrack_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &rtrack_unit.in_use) ? -EBUSY : 0;
+}
+
+static int rtrack_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &rtrack_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations rtrack_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = rtrack_exclusive_open,
+	.release        = rtrack_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -408,6 +415,7 @@ static struct video_device rtrack_radio = {
 	.name		= "RadioTrack radio",
 	.fops           = &rtrack_fops,
 	.ioctl_ops 	= &rtrack_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 static int __init rtrack_init(void)
@@ -424,7 +432,7 @@ static int __init rtrack_init(void)
 		return -EBUSY;
 	}
 
-	rtrack_radio.priv=&rtrack_unit;
+	video_set_drvdata(&rtrack_radio, &rtrack_unit);
 
 	if (video_register_device(&rtrack_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
 		release_region(io, 2);
diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
index 628c689e3ff..d7848957323 100644
--- a/drivers/media/radio/radio-aztech.c
+++ b/drivers/media/radio/radio-aztech.c
@@ -70,6 +70,7 @@ static struct mutex lock;
 
 struct az_device
 {
+	unsigned long in_use;
 	int curvol;
 	unsigned long curfreq;
 	int stereo;
@@ -195,8 +196,7 @@ 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 az_device *az = dev->priv;
+	struct az_device *az = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -264,8 +264,7 @@ 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 az_device *az = dev->priv;
+	struct az_device *az = video_drvdata(file);
 
 	az->curfreq = f->frequency;
 	az_setfreq(az, az->curfreq);
@@ -275,8 +274,7 @@ 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 az_device *az = dev->priv;
+	struct az_device *az = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = az->curfreq;
@@ -302,8 +300,7 @@ 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 az_device *az = dev->priv;
+	struct az_device *az = video_drvdata(file);
 
 	switch (ctrl->id) {
 		case V4L2_CID_AUDIO_MUTE:
@@ -322,8 +319,7 @@ 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 az_device *az = dev->priv;
+	struct az_device *az = video_drvdata(file);
 
 	switch (ctrl->id) {
 		case V4L2_CID_AUDIO_MUTE:
@@ -342,10 +338,21 @@ static int vidioc_s_ctrl (struct file *file, void *priv,
 
 static struct az_device aztech_unit;
 
+static int aztech_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &aztech_unit.in_use) ? -EBUSY : 0;
+}
+
+static int aztech_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &aztech_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations aztech_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = aztech_exclusive_open,
+	.release        = aztech_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -369,9 +376,10 @@ static const struct v4l2_ioctl_ops aztech_ioctl_ops = {
 };
 
 static struct video_device aztech_radio = {
-	.name		    = "Aztech radio",
-	.fops               = &aztech_fops,
-	.ioctl_ops 	    = &aztech_ioctl_ops,
+	.name		= "Aztech radio",
+	.fops           = &aztech_fops,
+	.ioctl_ops 	= &aztech_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 module_param_named(debug,aztech_radio.debug, int, 0644);
@@ -392,7 +400,7 @@ static int __init aztech_init(void)
 	}
 
 	mutex_init(&lock);
-	aztech_radio.priv=&aztech_unit;
+	video_set_drvdata(&aztech_radio, &aztech_unit);
 
 	if (video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
 		release_region(io,2);
diff --git a/drivers/media/radio/radio-cadet.c b/drivers/media/radio/radio-cadet.c
index 04c3698d32e..0490a1fa999 100644
--- a/drivers/media/radio/radio-cadet.c
+++ b/drivers/media/radio/radio-cadet.c
@@ -589,6 +589,7 @@ static struct video_device cadet_radio = {
 	.name		= "Cadet radio",
 	.fops           = &cadet_fops,
 	.ioctl_ops 	= &cadet_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 #ifdef CONFIG_PNP
diff --git a/drivers/media/radio/radio-gemtek-pci.c b/drivers/media/radio/radio-gemtek-pci.c
index 5cd7f032298..e15bee6d7cf 100644
--- a/drivers/media/radio/radio-gemtek-pci.c
+++ b/drivers/media/radio/radio-gemtek-pci.c
@@ -100,9 +100,8 @@ struct gemtek_pci_card {
 	u8  mute;
 };
 
-static const char rcsid[] = "$Id: radio-gemtek-pci.c,v 1.1 2001/07/23 08:08:16 ted Exp ted $";
-
 static int nr_radio = -1;
+static unsigned long in_use;
 
 static inline u8 gemtek_pci_out( u16 value, u32 port )
 {
@@ -205,8 +204,7 @@ 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 gemtek_pci_card *card = dev->priv;
+	struct gemtek_pci_card *card = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -233,8 +231,7 @@ 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 gemtek_pci_card *card = dev->priv;
+	struct gemtek_pci_card *card = video_drvdata(file);
 
 	if ( (f->frequency < GEMTEK_PCI_RANGE_LOW) ||
 			(f->frequency > GEMTEK_PCI_RANGE_HIGH) )
@@ -248,8 +245,7 @@ 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_pci_card *card = dev->priv;
+	struct gemtek_pci_card *card = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = card->current_frequency;
@@ -273,8 +269,7 @@ 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_pci_card *card = dev->priv;
+	struct gemtek_pci_card *card = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -293,8 +288,7 @@ 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_pci_card *card = dev->priv;
+	struct gemtek_pci_card *card = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -364,10 +358,21 @@ MODULE_DEVICE_TABLE( pci, gemtek_pci_id );
 
 static int mx = 1;
 
+static int gemtek_pci_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int gemtek_pci_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static const struct file_operations gemtek_pci_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = gemtek_pci_exclusive_open,
+	.release        = gemtek_pci_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -391,9 +396,10 @@ static const struct v4l2_ioctl_ops gemtek_pci_ioctl_ops = {
 };
 
 static struct video_device vdev_template = {
-	.name          = "Gemtek PCI Radio",
-	.fops          = &gemtek_pci_fops,
-	.ioctl_ops     = &gemtek_pci_ioctl_ops,
+	.name          	= "Gemtek PCI Radio",
+	.fops          	= &gemtek_pci_fops,
+	.ioctl_ops 	= &gemtek_pci_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci_device_id *pci_id )
@@ -431,7 +437,7 @@ static int __devinit gemtek_pci_probe( struct pci_dev *pci_dev, const struct pci
 	}
 
 	card->videodev = devradio;
-	devradio->priv = card;
+	video_set_drvdata(devradio, card);
 	gemtek_pci_mute( card );
 
 	printk( KERN_INFO "Gemtek PCI Radio (rev. %d) found at 0x%04x-0x%04x.\n",
diff --git a/drivers/media/radio/radio-gemtek.c b/drivers/media/radio/radio-gemtek.c
index 0a0f956bb30..d131a5d3812 100644
--- a/drivers/media/radio/radio-gemtek.c
+++ b/drivers/media/radio/radio-gemtek.c
@@ -57,6 +57,7 @@ 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 "
@@ -393,10 +394,21 @@ 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,
@@ -447,8 +459,7 @@ 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);
 
@@ -458,8 +469,7 @@ 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;
@@ -483,8 +493,7 @@ 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:
@@ -503,8 +512,7 @@ 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:
@@ -569,9 +577,10 @@ 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,
 };
 
 /*
@@ -610,7 +619,7 @@ 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) < 0) {
 		release_region(io, 1);
diff --git a/drivers/media/radio/radio-maestro.c b/drivers/media/radio/radio-maestro.c
index 9ef0a763eeb..4bf4d007bcf 100644
--- a/drivers/media/radio/radio-maestro.c
+++ b/drivers/media/radio/radio-maestro.c
@@ -75,7 +75,21 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 static int radio_nr = -1;
 module_param(radio_nr, int, 0);
 
+static unsigned long in_use;
+
 static int maestro_probe(struct pci_dev *pdev, const struct pci_device_id *ent);
+
+static int maestro_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int maestro_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static void maestro_remove(struct pci_dev *pdev);
 
 static struct pci_device_id maestro_r_pci_tbl[] = {
@@ -98,8 +112,8 @@ static struct pci_driver maestro_r_driver = {
 
 static const struct file_operations maestro_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = maestro_exclusive_open,
+	.release        = maestro_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -196,8 +210,7 @@ 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 = video_get_drvdata(dev);
+	struct radio_device *card = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -229,8 +242,7 @@ 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 radio_device *card = video_get_drvdata(dev);
+	struct radio_device *card = video_drvdata(file);
 
 	if (f->frequency < FREQ_LO || f->frequency > FREQ_HI)
 		return -EINVAL;
@@ -241,8 +253,7 @@ 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 = video_get_drvdata(dev);
+	struct radio_device *card = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = BITS2FREQ(radio_bits_get(card));
@@ -267,8 +278,7 @@ 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 = video_get_drvdata(dev);
+	struct radio_device *card = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -281,8 +291,7 @@ 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 = video_get_drvdata(dev);
+	struct radio_device *card = video_drvdata(file);
 	register u16 io = card->io;
 	register u16 omask = inw(io + IO_MASK);
 
@@ -374,6 +383,7 @@ static struct video_device maestro_radio = {
 	.name           = "Maestro radio",
 	.fops           = &maestro_fops,
 	.ioctl_ops 	= &maestro_ioctl_ops,
+	.release	= video_device_release,
 };
 
 static int __devinit maestro_probe(struct pci_dev *pdev,
diff --git a/drivers/media/radio/radio-maxiradio.c b/drivers/media/radio/radio-maxiradio.c
index 0cc6fcb041f..c777a17b00b 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!");
diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c
new file mode 100644
index 00000000000..a33717c4800
--- /dev/null
+++ b/drivers/media/radio/radio-mr800.c
@@ -0,0 +1,628 @@
+/*
+ * A driver for the AverMedia MR 800 USB FM radio. This device plugs
+ * into both the USB and an analog audio input, so this thing
+ * only deals with initialization and frequency setting, the
+ * audio data has to be handled by a sound driver.
+ *
+ * Copyright (c) 2008 Alexey Klimov <klimov.linux@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+/*
+ * Big thanks to authors of dsbr100.c and radio-si470x.c
+ *
+ * When work was looked pretty good, i discover this:
+ * http://av-usbradio.sourceforge.net/index.php
+ * http://sourceforge.net/projects/av-usbradio/
+ * Latest release of theirs project was in 2005.
+ * Probably, this driver could be improved trough using their
+ * achievements (specifications given).
+ * So, we have smth to begin with.
+ *
+ * History:
+ * Version 0.01:	First working version.
+ * 			It's required to blacklist AverMedia USB Radio
+ * 			in usbhid/hid-quirks.c
+ *
+ * Many things to do:
+ * 	- Correct power managment of device (suspend & resume)
+ * 	- Make x86 independance (little-endian and big-endian stuff)
+ * 	- Add code for scanning and smooth tuning
+ * 	- Checked and add stereo&mono stuff
+ * 	- Add code for sensitivity value
+ * 	- Correct mistakes
+ * 	- In Japan another FREQ_MIN and FREQ_MAX
+ */
+
+/* kernel includes */
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-common.h>
+#include <media/v4l2-ioctl.h>
+#include <linux/usb.h>
+#include <linux/version.h>	/* for KERNEL_VERSION MACRO */
+
+/* driver and module definitions */
+#define DRIVER_AUTHOR "Alexey Klimov <klimov.linux@gmail.com>"
+#define DRIVER_DESC "AverMedia MR 800 USB FM radio driver"
+#define DRIVER_VERSION "0.01"
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 1)
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+#define USB_AMRADIO_VENDOR 0x07ca
+#define USB_AMRADIO_PRODUCT 0xb800
+
+/* Probably USB_TIMEOUT should be modified in module parameter */
+#define BUFFER_LENGTH 8
+#define USB_TIMEOUT 500
+
+/* Frequency limits in MHz -- these are European values.  For Japanese
+devices, that would be 76 and 91.  */
+#define FREQ_MIN  87.5
+#define FREQ_MAX 108.0
+#define FREQ_MUL 16000
+
+/* module parameter */
+static int radio_nr = -1;
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(radio_nr, "Radio Nr");
+
+static struct v4l2_queryctrl radio_qctrl[] = {
+	{
+		.id            = V4L2_CID_AUDIO_MUTE,
+		.name          = "Mute",
+		.minimum       = 0,
+		.maximum       = 1,
+		.step	       = 1,
+		.default_value = 1,
+		.type          = V4L2_CTRL_TYPE_BOOLEAN,
+	},
+/* HINT: the disabled controls are only here to satify kradio and such apps */
+	{	.id		= V4L2_CID_AUDIO_VOLUME,
+		.flags		= V4L2_CTRL_FLAG_DISABLED,
+	},
+	{
+		.id		= V4L2_CID_AUDIO_BALANCE,
+		.flags		= V4L2_CTRL_FLAG_DISABLED,
+	},
+	{
+		.id		= V4L2_CID_AUDIO_BASS,
+		.flags		= V4L2_CTRL_FLAG_DISABLED,
+	},
+	{
+		.id		= V4L2_CID_AUDIO_TREBLE,
+		.flags		= V4L2_CTRL_FLAG_DISABLED,
+	},
+	{
+		.id		= V4L2_CID_AUDIO_LOUDNESS,
+		.flags		= V4L2_CTRL_FLAG_DISABLED,
+	},
+};
+
+static int usb_amradio_probe(struct usb_interface *intf,
+			     const struct usb_device_id *id);
+static void usb_amradio_disconnect(struct usb_interface *intf);
+static int usb_amradio_open(struct inode *inode, struct file *file);
+static int usb_amradio_close(struct inode *inode, struct file *file);
+static int usb_amradio_suspend(struct usb_interface *intf,
+				pm_message_t message);
+static int usb_amradio_resume(struct usb_interface *intf);
+
+/* Data for one (physical) device */
+struct amradio_device {
+	/* reference to USB and video device */
+	struct usb_device *usbdev;
+	struct video_device *videodev;
+
+	unsigned char *buffer;
+	struct mutex lock;	/* buffer locking */
+	int curfreq;
+	int stereo;
+	int users;
+	int removed;
+	int muted;
+};
+
+/* USB Device ID List */
+static struct usb_device_id usb_amradio_device_table[] = {
+	{USB_DEVICE_AND_INTERFACE_INFO(USB_AMRADIO_VENDOR, USB_AMRADIO_PRODUCT,
+							USB_CLASS_HID, 0, 0) },
+	{ }						/* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, usb_amradio_device_table);
+
+/* USB subsystem interface */
+static struct usb_driver usb_amradio_driver = {
+	.name			= "radio-mr800",
+	.probe			= usb_amradio_probe,
+	.disconnect		= usb_amradio_disconnect,
+	.suspend		= usb_amradio_suspend,
+	.resume			= usb_amradio_resume,
+	.reset_resume		= usb_amradio_resume,
+	.id_table		= usb_amradio_device_table,
+	.supports_autosuspend	= 1,
+};
+
+/* switch on radio. Send 8 bytes to device. */
+static int amradio_start(struct amradio_device *radio)
+{
+	int retval;
+	int size;
+
+	mutex_lock(&radio->lock);
+
+	radio->buffer[0] = 0x00;
+	radio->buffer[1] = 0x55;
+	radio->buffer[2] = 0xaa;
+	radio->buffer[3] = 0x00;
+	radio->buffer[4] = 0xab;
+	radio->buffer[5] = 0x00;
+	radio->buffer[6] = 0x00;
+	radio->buffer[7] = 0x00;
+
+	retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
+		(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
+
+	if (retval) {
+		mutex_unlock(&radio->lock);
+		return retval;
+	}
+
+	mutex_unlock(&radio->lock);
+
+	radio->muted = 0;
+
+	return retval;
+}
+
+/* switch off radio */
+static int amradio_stop(struct amradio_device *radio)
+{
+	int retval;
+	int size;
+
+	mutex_lock(&radio->lock);
+
+	radio->buffer[0] = 0x00;
+	radio->buffer[1] = 0x55;
+	radio->buffer[2] = 0xaa;
+	radio->buffer[3] = 0x00;
+	radio->buffer[4] = 0xab;
+	radio->buffer[5] = 0x01;
+	radio->buffer[6] = 0x00;
+	radio->buffer[7] = 0x00;
+
+	retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
+		(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
+
+	if (retval) {
+		mutex_unlock(&radio->lock);
+		return retval;
+	}
+
+	mutex_unlock(&radio->lock);
+
+	radio->muted = 1;
+
+	return retval;
+}
+
+/* set a frequency, freq is defined by v4l's TUNER_LOW, i.e. 1/16th kHz */
+static int amradio_setfreq(struct amradio_device *radio, int freq)
+{
+	int retval;
+	int size;
+	unsigned short freq_send = 0x13 + (freq >> 3) / 25;
+
+	mutex_lock(&radio->lock);
+
+	radio->buffer[0] = 0x00;
+	radio->buffer[1] = 0x55;
+	radio->buffer[2] = 0xaa;
+	radio->buffer[3] = 0x03;
+	radio->buffer[4] = 0xa4;
+	radio->buffer[5] = 0x00;
+	radio->buffer[6] = 0x00;
+	radio->buffer[7] = 0x08;
+
+	retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
+		(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
+
+	if (retval) {
+		mutex_unlock(&radio->lock);
+		return retval;
+	}
+
+	/* frequency is calculated from freq_send and placed in first 2 bytes */
+	radio->buffer[0] = (freq_send >> 8) & 0xff;
+	radio->buffer[1] = freq_send & 0xff;
+	radio->buffer[2] = 0x01;
+	radio->buffer[3] = 0x00;
+	radio->buffer[4] = 0x00;
+	/* 5 and 6 bytes of buffer already = 0x00 */
+	radio->buffer[7] = 0x00;
+
+	retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
+		(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
+
+	if (retval) {
+		mutex_unlock(&radio->lock);
+		return retval;
+	}
+
+	mutex_unlock(&radio->lock);
+
+	radio->stereo = 0;
+
+	return retval;
+}
+
+/* USB subsystem interface begins here */
+
+/* handle unplugging of the device, release data structures
+if nothing keeps us from doing it.  If something is still
+keeping us busy, the release callback of v4l will take care
+of releasing it. */
+static void usb_amradio_disconnect(struct usb_interface *intf)
+{
+	struct amradio_device *radio = usb_get_intfdata(intf);
+
+	usb_set_intfdata(intf, NULL);
+
+	if (radio) {
+		video_unregister_device(radio->videodev);
+		radio->videodev = NULL;
+		if (radio->users) {
+			kfree(radio->buffer);
+			kfree(radio);
+		} else {
+			radio->removed = 1;
+		}
+	}
+}
+
+/* vidioc_querycap - query device capabilities */
+static int vidioc_querycap(struct file *file, void *priv,
+					struct v4l2_capability *v)
+{
+	strlcpy(v->driver, "radio-mr800", sizeof(v->driver));
+	strlcpy(v->card, "AverMedia MR 800 USB FM Radio", sizeof(v->card));
+	sprintf(v->bus_info, "USB");
+	v->version = RADIO_VERSION;
+	v->capabilities = V4L2_CAP_TUNER;
+	return 0;
+}
+
+/* vidioc_g_tuner - get tuner attributes */
+static int vidioc_g_tuner(struct file *file, void *priv,
+				struct v4l2_tuner *v)
+{
+	struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+
+	if (v->index > 0)
+		return -EINVAL;
+
+/* TODO: Add function which look is signal stereo or not
+ * 	amradio_getstat(radio);
+ */
+	radio->stereo = -1;
+	strcpy(v->name, "FM");
+	v->type = V4L2_TUNER_RADIO;
+	v->rangelow = FREQ_MIN * FREQ_MUL;
+	v->rangehigh = FREQ_MAX * FREQ_MUL;
+	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+	v->capability = V4L2_TUNER_CAP_LOW;
+	if (radio->stereo)
+		v->audmode = V4L2_TUNER_MODE_STEREO;
+	else
+		v->audmode = V4L2_TUNER_MODE_MONO;
+	v->signal = 0xffff;     /* Can't get the signal strength, sad.. */
+	v->afc = 0; /* Don't know what is this */
+	return 0;
+}
+
+/* vidioc_s_tuner - set tuner attributes */
+static int vidioc_s_tuner(struct file *file, void *priv,
+				struct v4l2_tuner *v)
+{
+	if (v->index > 0)
+		return -EINVAL;
+	return 0;
+}
+
+/* vidioc_s_frequency - set tuner radio frequency */
+static int vidioc_s_frequency(struct file *file, void *priv,
+				struct v4l2_frequency *f)
+{
+	struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+
+	radio->curfreq = f->frequency;
+	if (amradio_setfreq(radio, radio->curfreq) < 0)
+		warn("Set frequency failed");
+	return 0;
+}
+
+/* vidioc_g_frequency - get tuner radio frequency */
+static int vidioc_g_frequency(struct file *file, void *priv,
+				struct v4l2_frequency *f)
+{
+	struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+
+	f->type = V4L2_TUNER_RADIO;
+	f->frequency = radio->curfreq;
+	return 0;
+}
+
+/* vidioc_queryctrl - enumerate control items */
+static int vidioc_queryctrl(struct file *file, void *priv,
+				struct v4l2_queryctrl *qc)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(radio_qctrl); i++) {
+		if (qc->id && qc->id == radio_qctrl[i].id) {
+			memcpy(qc, &(radio_qctrl[i]),
+						sizeof(*qc));
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+/* vidioc_g_ctrl - get the value of a control */
+static int vidioc_g_ctrl(struct file *file, void *priv,
+				struct v4l2_control *ctrl)
+{
+	struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		ctrl->value = radio->muted;
+		return 0;
+	}
+	return -EINVAL;
+}
+
+/* vidioc_s_ctrl - set the value of a control */
+static int vidioc_s_ctrl(struct file *file, void *priv,
+				struct v4l2_control *ctrl)
+{
+	struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+
+	switch (ctrl->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		if (ctrl->value) {
+			if (amradio_stop(radio) < 0) {
+				warn("amradio_stop() failed");
+				return -1;
+			}
+		} else {
+			if (amradio_start(radio) < 0) {
+				warn("amradio_start() failed");
+				return -1;
+			}
+		}
+		return 0;
+	}
+	return -EINVAL;
+}
+
+/* vidioc_g_audio - get audio attributes */
+static int vidioc_g_audio(struct file *file, void *priv,
+				struct v4l2_audio *a)
+{
+	if (a->index > 1)
+		return -EINVAL;
+
+	strcpy(a->name, "Radio");
+	a->capability = V4L2_AUDCAP_STEREO;
+	return 0;
+}
+
+/* vidioc_s_audio - set audio attributes  */
+static int vidioc_s_audio(struct file *file, void *priv,
+					struct v4l2_audio *a)
+{
+	if (a->index != 0)
+		return -EINVAL;
+	return 0;
+}
+
+/* vidioc_g_input - get input */
+static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
+{
+	*i = 0;
+	return 0;
+}
+
+/* vidioc_s_input - set input */
+static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
+{
+	if (i != 0)
+		return -EINVAL;
+	return 0;
+}
+
+/* open device - amradio_start() and amradio_setfreq() */
+static int usb_amradio_open(struct inode *inode, struct file *file)
+{
+	struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+
+	radio->users = 1;
+	radio->muted = 1;
+
+	if (amradio_start(radio) < 0) {
+		warn("Radio did not start up properly");
+		radio->users = 0;
+		return -EIO;
+	}
+	if (amradio_setfreq(radio, radio->curfreq) < 0)
+		warn("Set frequency failed");
+	return 0;
+}
+
+/*close device - free driver structures */
+static int usb_amradio_close(struct inode *inode, struct file *file)
+{
+	struct amradio_device *radio = video_get_drvdata(video_devdata(file));
+
+	if (!radio)
+		return -ENODEV;
+	radio->users = 0;
+	if (radio->removed) {
+		kfree(radio->buffer);
+		kfree(radio);
+	}
+	return 0;
+}
+
+/* Suspend device - stop device. Need to be checked and fixed */
+static int usb_amradio_suspend(struct usb_interface *intf, pm_message_t message)
+{
+	struct amradio_device *radio = usb_get_intfdata(intf);
+
+	if (amradio_stop(radio) < 0)
+		warn("amradio_stop() failed");
+
+	info("radio-mr800: Going into suspend..");
+
+	return 0;
+}
+
+/* Resume device - start device. Need to be checked and fixed */
+static int usb_amradio_resume(struct usb_interface *intf)
+{
+	struct amradio_device *radio = usb_get_intfdata(intf);
+
+	if (amradio_start(radio) < 0)
+		warn("amradio_start() failed");
+
+	info("radio-mr800: Coming out of suspend..");
+
+	return 0;
+}
+
+/* File system interface */
+static const struct file_operations usb_amradio_fops = {
+	.owner		= THIS_MODULE,
+	.open		= usb_amradio_open,
+	.release	= usb_amradio_close,
+	.ioctl		= video_ioctl2,
+#ifdef CONFIG_COMPAT
+	.compat_ioctl	= v4l_compat_ioctl32,
+#endif
+	.llseek		= no_llseek,
+};
+
+static const struct v4l2_ioctl_ops usb_amradio_ioctl_ops = {
+	.vidioc_querycap    = vidioc_querycap,
+	.vidioc_g_tuner     = vidioc_g_tuner,
+	.vidioc_s_tuner     = vidioc_s_tuner,
+	.vidioc_g_frequency = vidioc_g_frequency,
+	.vidioc_s_frequency = vidioc_s_frequency,
+	.vidioc_queryctrl   = vidioc_queryctrl,
+	.vidioc_g_ctrl      = vidioc_g_ctrl,
+	.vidioc_s_ctrl      = vidioc_s_ctrl,
+	.vidioc_g_audio     = vidioc_g_audio,
+	.vidioc_s_audio     = vidioc_s_audio,
+	.vidioc_g_input     = vidioc_g_input,
+	.vidioc_s_input     = vidioc_s_input,
+};
+
+/* V4L2 interface */
+static struct video_device amradio_videodev_template = {
+	.name		= "AverMedia MR 800 USB FM Radio",
+	.fops		= &usb_amradio_fops,
+	.ioctl_ops 	= &usb_amradio_ioctl_ops,
+	.release	= video_device_release,
+};
+
+/* check if the device is present and register with v4l and
+usb if it is */
+static int usb_amradio_probe(struct usb_interface *intf,
+				const struct usb_device_id *id)
+{
+	struct amradio_device *radio;
+
+	radio = kmalloc(sizeof(struct amradio_device), GFP_KERNEL);
+
+	if (!(radio))
+		return -ENOMEM;
+
+	radio->buffer = kmalloc(BUFFER_LENGTH, GFP_KERNEL);
+
+	if (!(radio->buffer)) {
+		kfree(radio);
+		return -ENOMEM;
+	}
+
+	radio->videodev = video_device_alloc();
+
+	if (!(radio->videodev)) {
+		kfree(radio->buffer);
+		kfree(radio);
+		return -ENOMEM;
+	}
+
+	memcpy(radio->videodev, &amradio_videodev_template,
+		sizeof(amradio_videodev_template));
+
+	radio->removed = 0;
+	radio->users = 0;
+	radio->usbdev = interface_to_usbdev(intf);
+	radio->curfreq = 95.16 * FREQ_MUL;
+
+	mutex_init(&radio->lock);
+
+	video_set_drvdata(radio->videodev, radio);
+	if (video_register_device(radio->videodev, VFL_TYPE_RADIO, radio_nr)) {
+		warn("Could not register video device");
+		video_device_release(radio->videodev);
+		kfree(radio->buffer);
+		kfree(radio);
+		return -EIO;
+	}
+
+	usb_set_intfdata(intf, radio);
+	return 0;
+}
+
+static int __init amradio_init(void)
+{
+	int retval = usb_register(&usb_amradio_driver);
+
+	info(DRIVER_VERSION " " DRIVER_DESC);
+	if (retval)
+		err("usb_register failed. Error number %d", retval);
+	return retval;
+}
+
+static void __exit amradio_exit(void)
+{
+	usb_deregister(&usb_amradio_driver);
+}
+
+module_init(amradio_init);
+module_exit(amradio_exit);
+
diff --git a/drivers/media/radio/radio-rtrack2.c b/drivers/media/radio/radio-rtrack2.c
index 6d820e2481e..a6707977741 100644
--- a/drivers/media/radio/radio-rtrack2.c
+++ b/drivers/media/radio/radio-rtrack2.c
@@ -52,6 +52,7 @@ static spinlock_t lock;
 
 struct rt_device
 {
+	unsigned long in_use;
 	int port;
 	unsigned long curfreq;
 	int muted;
@@ -153,8 +154,7 @@ static int rt_getsigstr(struct rt_device *dev)
 static int vidioc_g_tuner(struct file *file, void *priv,
 				struct v4l2_tuner *v)
 {
-	struct video_device *dev = video_devdata(file);
-	struct rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -173,8 +173,7 @@ static int vidioc_g_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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	rt->curfreq = f->frequency;
 	rt_setfreq(rt, rt->curfreq);
@@ -184,8 +183,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = rt->curfreq;
@@ -210,8 +208,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -230,8 +227,7 @@ 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 rt_device *rt = dev->priv;
+	struct rt_device *rt = 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 rt_device rtrack2_unit;
 
+static int rtrack2_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &rtrack2_unit.in_use) ? -EBUSY : 0;
+}
+
+static int rtrack2_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &rtrack2_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations rtrack2_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = rtrack2_exclusive_open,
+	.release        = rtrack2_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -314,6 +321,7 @@ static struct video_device rtrack2_radio = {
 	.name		= "RadioTrack II radio",
 	.fops           = &rtrack2_fops,
 	.ioctl_ops 	= &rtrack2_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 static int __init rtrack2_init(void)
@@ -329,7 +337,7 @@ static int __init rtrack2_init(void)
 		return -EBUSY;
 	}
 
-	rtrack2_radio.priv=&rtrack2_unit;
+	video_set_drvdata(&rtrack2_radio, &rtrack2_unit);
 
 	spin_lock_init(&lock);
 	if (video_register_device(&rtrack2_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
diff --git a/drivers/media/radio/radio-sf16fmi.c b/drivers/media/radio/radio-sf16fmi.c
index 0d478f54a90..329c90bddad 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);
 
diff --git a/drivers/media/radio/radio-sf16fmr2.c b/drivers/media/radio/radio-sf16fmr2.c
index 6290553d24b..b1f47c322e0 100644
--- a/drivers/media/radio/radio-sf16fmr2.c
+++ b/drivers/media/radio/radio-sf16fmr2.c
@@ -64,6 +64,7 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 /* this should be static vars for module size */
 struct fmr2_device
 {
+	unsigned long in_use;
 	int port;
 	int curvol; /* 0-15 */
 	int mute;
@@ -229,8 +230,7 @@ static int vidioc_g_tuner(struct file *file, void *priv,
 					struct v4l2_tuner *v)
 {
 	int mult;
-	struct video_device *dev = video_devdata(file);
-	struct fmr2_device *fmr2 = dev->priv;
+	struct fmr2_device *fmr2 = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -262,8 +262,7 @@ 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 fmr2_device *fmr2 = dev->priv;
+	struct fmr2_device *fmr2 = video_drvdata(file);
 
 	if (!(fmr2->flags & V4L2_TUNER_CAP_LOW))
 		f->frequency *= 1000;
@@ -286,8 +285,7 @@ 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 fmr2_device *fmr2 = dev->priv;
+	struct fmr2_device *fmr2 = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = fmr2->curfreq;
@@ -313,8 +311,7 @@ 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 fmr2_device *fmr2 = dev->priv;
+	struct fmr2_device *fmr2 = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -330,8 +327,7 @@ 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 fmr2_device *fmr2 = dev->priv;
+	struct fmr2_device *fmr2 = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -400,10 +396,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct fmr2_device fmr2_unit;
 
+static int fmr2_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &fmr2_unit.in_use) ? -EBUSY : 0;
+}
+
+static int fmr2_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &fmr2_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations fmr2_fops = {
 	.owner          = THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = fmr2_exclusive_open,
+	.release        = fmr2_exclusive_release,
 	.ioctl          = video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -430,6 +437,7 @@ static struct video_device fmr2_radio = {
 	.name		= "SF16FMR2 radio",
 	.fops		= &fmr2_fops,
 	.ioctl_ops 	= &fmr2_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 static int __init fmr2_init(void)
@@ -441,7 +449,7 @@ static int __init fmr2_init(void)
 	fmr2_unit.stereo = 1;
 	fmr2_unit.flags = V4L2_TUNER_CAP_LOW;
 	fmr2_unit.card_type = 0;
-	fmr2_radio.priv = &fmr2_unit;
+	video_set_drvdata(&fmr2_radio, &fmr2_unit);
 
 	mutex_init(&lock);
 
diff --git a/drivers/media/radio/radio-si470x.c b/drivers/media/radio/radio-si470x.c
index 16c7ef20265..f6cedcd3ab9 100644
--- a/drivers/media/radio/radio-si470x.c
+++ b/drivers/media/radio/radio-si470x.c
@@ -986,7 +986,7 @@ static void si470x_work(struct work_struct *work)
 static ssize_t si470x_fops_read(struct file *file, char __user *buf,
 		size_t count, loff_t *ppos)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 	unsigned int block_count = 0;
 
@@ -1047,7 +1047,7 @@ done:
 static unsigned int si470x_fops_poll(struct file *file,
 		struct poll_table_struct *pts)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* switch on rds reception */
@@ -1071,9 +1071,10 @@ static unsigned int si470x_fops_poll(struct file *file,
  */
 static int si470x_fops_open(struct inode *inode, struct file *file)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval;
 
+	lock_kernel();
 	radio->users++;
 
 	retval = usb_autopm_get_interface(radio->intf);
@@ -1090,6 +1091,7 @@ static int si470x_fops_open(struct inode *inode, struct file *file)
 	}
 
 done:
+	unlock_kernel();
 	return retval;
 }
 
@@ -1099,7 +1101,7 @@ done:
  */
 static int si470x_fops_release(struct inode *inode, struct file *file)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety check */
@@ -1282,7 +1284,7 @@ done:
 static int si470x_vidioc_g_ctrl(struct file *file, void *priv,
 		struct v4l2_control *ctrl)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety checks */
@@ -1318,7 +1320,7 @@ done:
 static int si470x_vidioc_s_ctrl(struct file *file, void *priv,
 		struct v4l2_control *ctrl)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety checks */
@@ -1405,7 +1407,7 @@ done:
 static int si470x_vidioc_g_tuner(struct file *file, void *priv,
 		struct v4l2_tuner *tuner)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety checks */
@@ -1471,7 +1473,7 @@ done:
 static int si470x_vidioc_s_tuner(struct file *file, void *priv,
 		struct v4l2_tuner *tuner)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety checks */
@@ -1505,7 +1507,7 @@ done:
 static int si470x_vidioc_g_frequency(struct file *file, void *priv,
 		struct v4l2_frequency *freq)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety checks */
@@ -1534,7 +1536,7 @@ done:
 static int si470x_vidioc_s_frequency(struct file *file, void *priv,
 		struct v4l2_frequency *freq)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety checks */
@@ -1563,7 +1565,7 @@ done:
 static int si470x_vidioc_s_hw_freq_seek(struct file *file, void *priv,
 		struct v4l2_hw_freq_seek *seek)
 {
-	struct si470x_device *radio = video_get_drvdata(video_devdata(file));
+	struct si470x_device *radio = video_drvdata(file);
 	int retval = 0;
 
 	/* safety checks */
diff --git a/drivers/media/radio/radio-terratec.c b/drivers/media/radio/radio-terratec.c
index 0876fecc5f2..0abb186a947 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);
 
diff --git a/drivers/media/radio/radio-trust.c b/drivers/media/radio/radio-trust.c
index 19316195625..e7b111fcd10 100644
--- a/drivers/media/radio/radio-trust.c
+++ b/drivers/media/radio/radio-trust.c
@@ -78,6 +78,7 @@ static __u16 curtreble;
 static unsigned long curfreq;
 static int curstereo;
 static int curmute;
+static unsigned long in_use;
 
 /* i2c addresses */
 #define TDA7318_ADDR 0x88
@@ -336,10 +337,21 @@ static int vidioc_s_audio(struct file *file, void *priv,
 	return 0;
 }
 
+static int trust_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &in_use) ? -EBUSY : 0;
+}
+
+static int trust_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &in_use);
+	return 0;
+}
+
 static const struct file_operations trust_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = trust_exclusive_open,
+	.release        = trust_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -366,6 +378,7 @@ static struct video_device trust_radio = {
 	.name		= "Trust FM Radio",
 	.fops           = &trust_fops,
 	.ioctl_ops 	= &trust_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 static int __init trust_init(void)
diff --git a/drivers/media/radio/radio-typhoon.c b/drivers/media/radio/radio-typhoon.c
index f8d62cfea77..952ec35a841 100644
--- a/drivers/media/radio/radio-typhoon.c
+++ b/drivers/media/radio/radio-typhoon.c
@@ -79,7 +79,7 @@ static struct v4l2_queryctrl radio_qctrl[] = {
 #endif
 
 struct typhoon_device {
-	int users;
+	unsigned long in_use;
 	int iobase;
 	int curvol;
 	int muted;
@@ -223,8 +223,7 @@ 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 typhoon_device *typhoon = dev->priv;
+	struct typhoon_device *typhoon = video_drvdata(file);
 
 	typhoon->curfreq = f->frequency;
 	typhoon_setfreq(typhoon, typhoon->curfreq);
@@ -234,8 +233,7 @@ 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 typhoon_device *typhoon = dev->priv;
+	struct typhoon_device *typhoon = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = typhoon->curfreq;
@@ -261,8 +259,7 @@ 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 typhoon_device *typhoon = dev->priv;
+	struct typhoon_device *typhoon = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -278,8 +275,7 @@ 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 typhoon_device *typhoon = dev->priv;
+	struct typhoon_device *typhoon = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -334,10 +330,21 @@ static struct typhoon_device typhoon_unit =
 	.mutefreq	= CONFIG_RADIO_TYPHOON_MUTEFREQ,
 };
 
+static int typhoon_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &typhoon_unit.in_use) ? -EBUSY : 0;
+}
+
+static int typhoon_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &typhoon_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations typhoon_fops = {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = typhoon_exclusive_open,
+	.release        = typhoon_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -364,6 +371,7 @@ static struct video_device typhoon_radio = {
 	.name		= "Typhoon Radio",
 	.fops           = &typhoon_fops,
 	.ioctl_ops 	= &typhoon_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 #ifdef CONFIG_RADIO_TYPHOON_PROC_FS
@@ -446,9 +454,8 @@ static int __init typhoon_init(void)
 		return -EBUSY;
 	}
 
-	typhoon_radio.priv = &typhoon_unit;
-	if (video_register_device(&typhoon_radio, VFL_TYPE_RADIO, radio_nr) == -1)
-	{
+	video_set_drvdata(&typhoon_radio, &typhoon_unit);
+	if (video_register_device(&typhoon_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
 		release_region(io, 8);
 		return -EINVAL;
 	}
diff --git a/drivers/media/radio/radio-zoltrix.c b/drivers/media/radio/radio-zoltrix.c
index 51d57ed3b3e..15b10bad679 100644
--- a/drivers/media/radio/radio-zoltrix.c
+++ b/drivers/media/radio/radio-zoltrix.c
@@ -69,6 +69,7 @@ static int io = CONFIG_RADIO_ZOLTRIX_PORT;
 static int radio_nr = -1;
 
 struct zol_device {
+	unsigned long in_use;
 	int port;
 	int curvol;
 	unsigned long curfreq;
@@ -122,8 +123,11 @@ static int zol_setfreq(struct zol_device *dev, unsigned long freq)
 	unsigned int stereo = dev->stereo;
 	int i;
 
-	if (freq == 0)
-		return 1;
+	if (freq == 0) {
+		printk(KERN_WARNING "zoltrix: received zero freq. Failed to set.\n");
+		return -EINVAL;
+	}
+
 	m = (freq / 160 - 8800) * 2;
 	f = (unsigned long long) m + 0x4d1c;
 
@@ -245,8 +249,7 @@ 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 zol_device *zol = dev->priv;
+	struct zol_device *zol = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
@@ -276,19 +279,20 @@ 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 zol_device *zol = dev->priv;
+	struct zol_device *zol = video_drvdata(file);
 
 	zol->curfreq = f->frequency;
-	zol_setfreq(zol, zol->curfreq);
+	if (zol_setfreq(zol, zol->curfreq) != 0) {
+		printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
+		return -EINVAL;
+	}
 	return 0;
 }
 
 static int vidioc_g_frequency(struct file *file, void *priv,
 					struct v4l2_frequency *f)
 {
-	struct video_device *dev = video_devdata(file);
-	struct zol_device *zol = dev->priv;
+	struct zol_device *zol = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = zol->curfreq;
@@ -313,8 +317,7 @@ 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 zol_device *zol = dev->priv;
+	struct zol_device *zol = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -330,8 +333,7 @@ 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 zol_device *zol = dev->priv;
+	struct zol_device *zol = video_drvdata(file);
 
 	switch (ctrl->id) {
 	case V4L2_CID_AUDIO_MUTE:
@@ -347,7 +349,10 @@ static int vidioc_s_ctrl(struct file *file, void *priv,
 		return 0;
 	}
 	zol->stereo = 1;
-	zol_setfreq(zol, zol->curfreq);
+	if (zol_setfreq(zol, zol->curfreq) != 0) {
+		printk(KERN_WARNING "zoltrix: Set frequency failed.\n");
+		return -EINVAL;
+	}
 #if 0
 /* FIXME: Implement stereo/mono switch on V4L2 */
 			if (v->mode & VIDEO_SOUND_STEREO) {
@@ -396,11 +401,22 @@ static int vidioc_s_audio(struct file *file, void *priv,
 
 static struct zol_device zoltrix_unit;
 
+static int zoltrix_exclusive_open(struct inode *inode, struct file *file)
+{
+	return test_and_set_bit(0, &zoltrix_unit.in_use) ? -EBUSY : 0;
+}
+
+static int zoltrix_exclusive_release(struct inode *inode, struct file *file)
+{
+	clear_bit(0, &zoltrix_unit.in_use);
+	return 0;
+}
+
 static const struct file_operations zoltrix_fops =
 {
 	.owner		= THIS_MODULE,
-	.open           = video_exclusive_open,
-	.release        = video_exclusive_release,
+	.open           = zoltrix_exclusive_open,
+	.release        = zoltrix_exclusive_release,
 	.ioctl		= video_ioctl2,
 #ifdef CONFIG_COMPAT
 	.compat_ioctl	= v4l_compat_ioctl32,
@@ -427,6 +443,7 @@ static struct video_device zoltrix_radio = {
 	.name		= "Zoltrix Radio Plus",
 	.fops           = &zoltrix_fops,
 	.ioctl_ops 	= &zoltrix_ioctl_ops,
+	.release	= video_device_release_empty,
 };
 
 static int __init zoltrix_init(void)
@@ -440,7 +457,7 @@ static int __init zoltrix_init(void)
 		return -ENXIO;
 	}
 
-	zoltrix_radio.priv = &zoltrix_unit;
+	video_set_drvdata(&zoltrix_radio, &zoltrix_unit);
 	if (!request_region(io, 2, "zoltrix")) {
 		printk(KERN_ERR "zoltrix: port 0x%x already in use\n", io);
 		return -EBUSY;