diff --git a/drivers/media/radio/radio-aztech.c b/drivers/media/radio/radio-aztech.c
index 5604e88..35f6f40 100644
--- a/drivers/media/radio/radio-aztech.c
+++ b/drivers/media/radio/radio-aztech.c
@@ -29,33 +29,16 @@
 #include <linux/init.h>		/* Initdata			*/
 #include <linux/ioport.h>	/* request_region		*/
 #include <linux/delay.h>	/* udelay			*/
-#include <asm/io.h>		/* outb, outb_p			*/
-#include <asm/uaccess.h>	/* copy to/from user		*/
 #include <linux/videodev2.h>	/* kernel radio structs		*/
-#include <media/v4l2-common.h>
+#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
+#include <linux/io.h>		/* outb, outb_p			*/
+#include <linux/uaccess.h>	/* copy to/from user		*/
+#include <media/v4l2-device.h>
 #include <media/v4l2-ioctl.h>
 
-#include <linux/version.h>      /* for KERNEL_VERSION MACRO     */
-#define RADIO_VERSION KERNEL_VERSION(0,0,2)
-
-static struct v4l2_queryctrl radio_qctrl[] = {
-	{
-		.id            = V4L2_CID_AUDIO_MUTE,
-		.name          = "Mute",
-		.minimum       = 0,
-		.maximum       = 1,
-		.default_value = 1,
-		.type          = V4L2_CTRL_TYPE_BOOLEAN,
-	},{
-		.id            = V4L2_CID_AUDIO_VOLUME,
-		.name          = "Volume",
-		.minimum       = 0,
-		.maximum       = 0xff,
-		.step          = 1,
-		.default_value = 0xff,
-		.type          = V4L2_CTRL_TYPE_INTEGER,
-	}
-};
+MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
+MODULE_DESCRIPTION("A driver for the Aztech radio card.");
+MODULE_LICENSE("GPL");
 
 /* acceptable ports: 0x350 (JP3 shorted), 0x358 (JP3 open) */
 
@@ -66,55 +49,64 @@
 static int io = CONFIG_RADIO_AZTECH_PORT;
 static int radio_nr = -1;
 static int radio_wait_time = 1000;
-static struct mutex lock;
 
-struct az_device
+module_param(io, int, 0);
+module_param(radio_nr, int, 0);
+MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
+
+#define RADIO_VERSION KERNEL_VERSION(0, 0, 2)
+
+struct aztech
 {
-	unsigned long in_use;
+	struct v4l2_device v4l2_dev;
+	struct video_device vdev;
+	int io;
 	int curvol;
 	unsigned long curfreq;
 	int stereo;
+	struct mutex lock;
 };
 
+static struct aztech aztech_card;
+
 static int volconvert(int level)
 {
-	level>>=14;		/* Map 16bits down to 2 bit */
-	level&=3;
+	level >>= 14;		/* Map 16bits down to 2 bit */
+	level &= 3;
 
 	/* convert to card-friendly values */
-	switch (level)
-	{
-		case 0:
-			return 0;
-		case 1:
-			return 1;
-		case 2:
-			return 4;
-		case 3:
-			return 5;
+	switch (level) {
+	case 0:
+		return 0;
+	case 1:
+		return 1;
+	case 2:
+		return 4;
+	case 3:
+		return 5;
 	}
 	return 0;	/* Quieten gcc */
 }
 
-static void send_0_byte (struct az_device *dev)
+static void send_0_byte(struct aztech *az)
 {
 	udelay(radio_wait_time);
-	outb_p(2+volconvert(dev->curvol), io);
-	outb_p(64+2+volconvert(dev->curvol), io);
+	outb_p(2 + volconvert(az->curvol), az->io);
+	outb_p(64 + 2 + volconvert(az->curvol), az->io);
 }
 
-static void send_1_byte (struct az_device *dev)
+static void send_1_byte(struct aztech *az)
 {
 	udelay (radio_wait_time);
-	outb_p(128+2+volconvert(dev->curvol), io);
-	outb_p(128+64+2+volconvert(dev->curvol), io);
+	outb_p(128 + 2 + volconvert(az->curvol), az->io);
+	outb_p(128 + 64 + 2 + volconvert(az->curvol), az->io);
 }
 
-static int az_setvol(struct az_device *dev, int vol)
+static int az_setvol(struct aztech *az, int vol)
 {
-	mutex_lock(&lock);
-	outb (volconvert(vol), io);
-	mutex_unlock(&lock);
+	mutex_lock(&az->lock);
+	outb(volconvert(vol), az->io);
+	mutex_unlock(&az->lock);
 	return 0;
 }
 
@@ -126,116 +118,110 @@
  *
  */
 
-static int az_getsigstr(struct az_device *dev)
+static int az_getsigstr(struct aztech *az)
 {
-	if (inb(io) & 2)	/* bit set = no signal present */
-		return 0;
-	return 1;		/* signal present */
+	int sig = 1;
+
+	mutex_lock(&az->lock);
+	if (inb(az->io) & 2)	/* bit set = no signal present */
+		sig = 0;
+	mutex_unlock(&az->lock);
+	return sig;
 }
 
-static int az_getstereo(struct az_device *dev)
+static int az_getstereo(struct aztech *az)
 {
-	if (inb(io) & 1) 	/* bit set = mono */
-		return 0;
-	return 1;		/* stereo */
+	int stereo = 1;
+
+	mutex_lock(&az->lock);
+	if (inb(az->io) & 1) 	/* bit set = mono */
+		stereo = 0;
+	mutex_unlock(&az->lock);
+	return stereo;
 }
 
-static int az_setfreq(struct az_device *dev, unsigned long frequency)
+static int az_setfreq(struct aztech *az, unsigned long frequency)
 {
 	int  i;
 
+	mutex_lock(&az->lock);
+
+	az->curfreq = frequency;
 	frequency += 171200;		/* Add 10.7 MHz IF		*/
 	frequency /= 800;		/* Convert to 50 kHz units	*/
 
-	mutex_lock(&lock);
-
-	send_0_byte (dev);		/*  0: LSB of frequency       */
+	send_0_byte(az);		/*  0: LSB of frequency       */
 
 	for (i = 0; i < 13; i++)	/*   : frequency bits (1-13)  */
 		if (frequency & (1 << i))
-			send_1_byte (dev);
+			send_1_byte(az);
 		else
-			send_0_byte (dev);
+			send_0_byte(az);
 
-	send_0_byte (dev);		/* 14: test bit - always 0    */
-	send_0_byte (dev);		/* 15: test bit - always 0    */
-	send_0_byte (dev);		/* 16: band data 0 - always 0 */
-	if (dev->stereo)		/* 17: stereo (1 to enable)   */
-		send_1_byte (dev);
+	send_0_byte(az);		/* 14: test bit - always 0    */
+	send_0_byte(az);		/* 15: test bit - always 0    */
+	send_0_byte(az);		/* 16: band data 0 - always 0 */
+	if (az->stereo)		/* 17: stereo (1 to enable)   */
+		send_1_byte(az);
 	else
-		send_0_byte (dev);
+		send_0_byte(az);
 
-	send_1_byte (dev);		/* 18: band data 1 - unknown  */
-	send_0_byte (dev);		/* 19: time base - always 0   */
-	send_0_byte (dev);		/* 20: spacing (0 = 25 kHz)   */
-	send_1_byte (dev);		/* 21: spacing (1 = 25 kHz)   */
-	send_0_byte (dev);		/* 22: spacing (0 = 25 kHz)   */
-	send_1_byte (dev);		/* 23: AM/FM (FM = 1, always) */
+	send_1_byte(az);		/* 18: band data 1 - unknown  */
+	send_0_byte(az);		/* 19: time base - always 0   */
+	send_0_byte(az);		/* 20: spacing (0 = 25 kHz)   */
+	send_1_byte(az);		/* 21: spacing (1 = 25 kHz)   */
+	send_0_byte(az);		/* 22: spacing (0 = 25 kHz)   */
+	send_1_byte(az);		/* 23: AM/FM (FM = 1, always) */
 
 	/* latch frequency */
 
-	udelay (radio_wait_time);
-	outb_p(128+64+volconvert(dev->curvol), io);
+	udelay(radio_wait_time);
+	outb_p(128 + 64 + volconvert(az->curvol), az->io);
 
-	mutex_unlock(&lock);
+	mutex_unlock(&az->lock);
 
 	return 0;
 }
 
-static int vidioc_querycap (struct file *file, void  *priv,
+static int vidioc_querycap(struct file *file, void  *priv,
 					struct v4l2_capability *v)
 {
-	strlcpy(v->driver, "radio-aztech", sizeof (v->driver));
-	strlcpy(v->card, "Aztech Radio", sizeof (v->card));
-	sprintf(v->bus_info,"ISA");
+	strlcpy(v->driver, "radio-aztech", sizeof(v->driver));
+	strlcpy(v->card, "Aztech Radio", sizeof(v->card));
+	strlcpy(v->bus_info, "ISA", sizeof(v->bus_info));
 	v->version = RADIO_VERSION;
-	v->capabilities = V4L2_CAP_TUNER;
+	v->capabilities = V4L2_CAP_TUNER | V4L2_CAP_RADIO;
 	return 0;
 }
 
-static int vidioc_g_tuner (struct file *file, void *priv,
+static int vidioc_g_tuner(struct file *file, void *priv,
 				struct v4l2_tuner *v)
 {
-	struct az_device *az = video_drvdata(file);
+	struct aztech *az = video_drvdata(file);
 
 	if (v->index > 0)
 		return -EINVAL;
 
-	strcpy(v->name, "FM");
+	strlcpy(v->name, "FM", sizeof(v->name));
 	v->type = V4L2_TUNER_RADIO;
 
-	v->rangelow=(87*16000);
-	v->rangehigh=(108*16000);
-	v->rxsubchans =V4L2_TUNER_SUB_MONO|V4L2_TUNER_SUB_STEREO;
-	v->capability=V4L2_TUNER_CAP_LOW;
-	if(az_getstereo(az))
+	v->rangelow = 87 * 16000;
+	v->rangehigh = 108 * 16000;
+	v->rxsubchans = V4L2_TUNER_SUB_MONO | V4L2_TUNER_SUB_STEREO;
+	v->capability = V4L2_TUNER_CAP_LOW;
+	if (az_getstereo(az))
 		v->audmode = V4L2_TUNER_MODE_STEREO;
 	else
 		v->audmode = V4L2_TUNER_MODE_MONO;
-	v->signal=0xFFFF*az_getsigstr(az);
+	v->signal = 0xFFFF * az_getsigstr(az);
 
 	return 0;
 }
 
-
-static int vidioc_s_tuner (struct file *file, void *priv,
+static int vidioc_s_tuner(struct file *file, void *priv,
 				struct v4l2_tuner *v)
 {
-	if (v->index > 0)
-		return -EINVAL;
-
-	return 0;
-}
-
-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;
+	return v->index ? -EINVAL : 0;
 }
 
 static int vidioc_g_input(struct file *filp, void *priv, unsigned int *i)
@@ -246,113 +232,107 @@
 
 static int vidioc_s_input(struct file *filp, void *priv, unsigned int i)
 {
-	if (i != 0)
-		return -EINVAL;
-	return 0;
+	return i ? -EINVAL : 0;
 }
 
-
-static int vidioc_s_audio (struct file *file, void *priv,
+static int vidioc_g_audio(struct file *file, void *priv,
 			   struct v4l2_audio *a)
 {
-	if (a->index != 0)
-		return -EINVAL;
-
+	a->index = 0;
+	strlcpy(a->name, "Radio", sizeof(a->name));
+	a->capability = V4L2_AUDCAP_STEREO;
 	return 0;
 }
 
-static int vidioc_s_frequency (struct file *file, void *priv,
+static int vidioc_s_audio(struct file *file, void *priv,
+			   struct v4l2_audio *a)
+{
+	return a->index ? -EINVAL : 0;
+}
+
+static int vidioc_s_frequency(struct file *file, void *priv,
 				struct v4l2_frequency *f)
 {
-	struct az_device *az = video_drvdata(file);
+	struct aztech *az = video_drvdata(file);
 
-	az->curfreq = f->frequency;
-	az_setfreq(az, az->curfreq);
+	az_setfreq(az, f->frequency);
 	return 0;
 }
 
-static int vidioc_g_frequency (struct file *file, void *priv,
+static int vidioc_g_frequency(struct file *file, void *priv,
 				struct v4l2_frequency *f)
 {
-	struct az_device *az = video_drvdata(file);
+	struct aztech *az = video_drvdata(file);
 
 	f->type = V4L2_TUNER_RADIO;
 	f->frequency = az->curfreq;
-
 	return 0;
 }
 
-static int vidioc_queryctrl (struct file *file, void *priv,
+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);
-		}
+	switch (qc->id) {
+	case V4L2_CID_AUDIO_MUTE:
+		return v4l2_ctrl_query_fill(qc, 0, 1, 1, 1);
+	case V4L2_CID_AUDIO_VOLUME:
+		return v4l2_ctrl_query_fill(qc, 0, 0xff, 1, 0xff);
 	}
 	return -EINVAL;
 }
 
-static int vidioc_g_ctrl (struct file *file, void *priv,
+static int vidioc_g_ctrl(struct file *file, void *priv,
 			    struct v4l2_control *ctrl)
 {
-	struct az_device *az = video_drvdata(file);
+	struct aztech *az = video_drvdata(file);
 
 	switch (ctrl->id) {
-		case V4L2_CID_AUDIO_MUTE:
-			if (az->curvol==0)
-				ctrl->value=1;
-			else
-				ctrl->value=0;
-			return (0);
-		case V4L2_CID_AUDIO_VOLUME:
-			ctrl->value=az->curvol * 6554;
-			return (0);
+	case V4L2_CID_AUDIO_MUTE:
+		if (az->curvol == 0)
+			ctrl->value = 1;
+		else
+			ctrl->value = 0;
+		return 0;
+	case V4L2_CID_AUDIO_VOLUME:
+		ctrl->value = az->curvol * 6554;
+		return 0;
 	}
 	return -EINVAL;
 }
 
-static int vidioc_s_ctrl (struct file *file, void *priv,
+static int vidioc_s_ctrl(struct file *file, void *priv,
 			    struct v4l2_control *ctrl)
 {
-	struct az_device *az = video_drvdata(file);
+	struct aztech *az = video_drvdata(file);
 
 	switch (ctrl->id) {
-		case V4L2_CID_AUDIO_MUTE:
-			if (ctrl->value) {
-				az_setvol(az,0);
-			} else {
-				az_setvol(az,az->curvol);
-			}
-			return (0);
-		case V4L2_CID_AUDIO_VOLUME:
-			az_setvol(az,ctrl->value);
-			return (0);
+	case V4L2_CID_AUDIO_MUTE:
+		if (ctrl->value)
+			az_setvol(az, 0);
+		else
+			az_setvol(az, az->curvol);
+		return 0;
+	case V4L2_CID_AUDIO_VOLUME:
+		az_setvol(az, ctrl->value);
+		return 0;
 	}
 	return -EINVAL;
 }
 
-static struct az_device aztech_unit;
-
-static int aztech_exclusive_open(struct file *file)
+static int aztech_open(struct file *file)
 {
-	return test_and_set_bit(0, &aztech_unit.in_use) ? -EBUSY : 0;
+	return 0;
 }
 
-static int aztech_exclusive_release(struct file *file)
+static int aztech_release(struct file *file)
 {
-	clear_bit(0, &aztech_unit.in_use);
 	return 0;
 }
 
 static const struct v4l2_file_operations aztech_fops = {
 	.owner		= THIS_MODULE,
-	.open           = aztech_exclusive_open,
-	.release        = aztech_exclusive_release,
+	.open           = aztech_open,
+	.release        = aztech_release,
 	.ioctl		= video_ioctl2,
 };
 
@@ -371,57 +351,60 @@
 	.vidioc_s_ctrl      = vidioc_s_ctrl,
 };
 
-static struct video_device aztech_radio = {
-	.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);
-MODULE_PARM_DESC(debug,"activates debug info");
-
 static int __init aztech_init(void)
 {
-	if(io==-1)
-	{
-		printk(KERN_ERR "You must set an I/O address with io=0x???\n");
+	struct aztech *az = &aztech_card;
+	struct v4l2_device *v4l2_dev = &az->v4l2_dev;
+	int res;
+
+	strlcpy(v4l2_dev->name, "aztech", sizeof(v4l2_dev->name));
+	az->io = io;
+
+	if (az->io == -1) {
+		v4l2_err(v4l2_dev, "you must set an I/O address with io=0x???\n");
 		return -EINVAL;
 	}
 
-	if (!request_region(io, 2, "aztech"))
-	{
-		printk(KERN_ERR "aztech: port 0x%x already in use\n", io);
+	if (!request_region(az->io, 2, "aztech")) {
+		v4l2_err(v4l2_dev, "port 0x%x already in use\n", az->io);
 		return -EBUSY;
 	}
 
-	mutex_init(&lock);
-	video_set_drvdata(&aztech_radio, &aztech_unit);
+	res = v4l2_device_register(NULL, v4l2_dev);
+	if (res < 0) {
+		release_region(az->io, 2);
+		v4l2_err(v4l2_dev, "Could not register v4l2_device\n");
+		return res;
+	}
 
-	if (video_register_device(&aztech_radio, VFL_TYPE_RADIO, radio_nr) < 0) {
-		release_region(io,2);
+	mutex_init(&az->lock);
+	strlcpy(az->vdev.name, v4l2_dev->name, sizeof(az->vdev.name));
+	az->vdev.v4l2_dev = v4l2_dev;
+	az->vdev.fops = &aztech_fops;
+	az->vdev.ioctl_ops = &aztech_ioctl_ops;
+	az->vdev.release = video_device_release_empty;
+	video_set_drvdata(&az->vdev, az);
+
+	if (video_register_device(&az->vdev, VFL_TYPE_RADIO, radio_nr) < 0) {
+		v4l2_device_unregister(v4l2_dev);
+		release_region(az->io, 2);
 		return -EINVAL;
 	}
 
-	printk(KERN_INFO "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
+	v4l2_info(v4l2_dev, "Aztech radio card driver v1.00/19990224 rkroll@exploits.org\n");
 	/* mute card - prevents noisy bootups */
-	outb (0, io);
+	outb(0, az->io);
 	return 0;
 }
 
-MODULE_AUTHOR("Russell Kroll, Quay Lu, Donald Song, Jason Lewis, Scott McGrath, William McGrath");
-MODULE_DESCRIPTION("A driver for the Aztech radio card.");
-MODULE_LICENSE("GPL");
-
-module_param(io, int, 0);
-module_param(radio_nr, int, 0);
-MODULE_PARM_DESC(io, "I/O address of the Aztech card (0x350 or 0x358)");
-
-static void __exit aztech_cleanup(void)
+static void __exit aztech_exit(void)
 {
-	video_unregister_device(&aztech_radio);
-	release_region(io,2);
+	struct aztech *az = &aztech_card;
+
+	video_unregister_device(&az->vdev);
+	v4l2_device_unregister(&az->v4l2_dev);
+	release_region(az->io, 2);
 }
 
 module_init(aztech_init);
-module_exit(aztech_cleanup);
+module_exit(aztech_exit);