diff --git a/drivers/nfc/virtual_ncidev.c b/drivers/nfc/virtual_ncidev.c
index 85c06db..bb76c7c 100644
--- a/drivers/nfc/virtual_ncidev.c
+++ b/drivers/nfc/virtual_ncidev.c
@@ -13,12 +13,6 @@
 #include <linux/wait.h>
 #include <net/nfc/nci_core.h>
 
-enum virtual_ncidev_mode {
-	virtual_ncidev_enabled,
-	virtual_ncidev_disabled,
-	virtual_ncidev_disabling,
-};
-
 #define IOCTL_GET_NCIDEV_IDX    0
 #define VIRTUAL_NFC_PROTOCOLS	(NFC_PROTO_JEWEL_MASK | \
 				 NFC_PROTO_MIFARE_MASK | \
@@ -27,12 +21,12 @@ enum virtual_ncidev_mode {
 				 NFC_PROTO_ISO14443_B_MASK | \
 				 NFC_PROTO_ISO15693_MASK)
 
-static enum virtual_ncidev_mode state;
-static DECLARE_WAIT_QUEUE_HEAD(wq);
-static struct miscdevice miscdev;
-static struct sk_buff *send_buff;
-static struct nci_dev *ndev;
-static DEFINE_MUTEX(nci_mutex);
+struct virtual_nci_dev {
+	struct nci_dev *ndev;
+	struct mutex mtx;
+	struct sk_buff *send_buff;
+	struct wait_queue_head wq;
+};
 
 static int virtual_nci_open(struct nci_dev *ndev)
 {
@@ -41,31 +35,34 @@ static int virtual_nci_open(struct nci_dev *ndev)
 
 static int virtual_nci_close(struct nci_dev *ndev)
 {
-	mutex_lock(&nci_mutex);
-	kfree_skb(send_buff);
-	send_buff = NULL;
-	mutex_unlock(&nci_mutex);
+	struct virtual_nci_dev *vdev = nci_get_drvdata(ndev);
+
+	mutex_lock(&vdev->mtx);
+	kfree_skb(vdev->send_buff);
+	vdev->send_buff = NULL;
+	mutex_unlock(&vdev->mtx);
 
 	return 0;
 }
 
 static int virtual_nci_send(struct nci_dev *ndev, struct sk_buff *skb)
 {
-	mutex_lock(&nci_mutex);
-	if (state != virtual_ncidev_enabled) {
-		mutex_unlock(&nci_mutex);
-		kfree_skb(skb);
-		return 0;
-	}
+	struct virtual_nci_dev *vdev = nci_get_drvdata(ndev);
 
-	if (send_buff) {
-		mutex_unlock(&nci_mutex);
+	mutex_lock(&vdev->mtx);
+	if (vdev->send_buff) {
+		mutex_unlock(&vdev->mtx);
 		kfree_skb(skb);
 		return -1;
 	}
-	send_buff = skb_copy(skb, GFP_KERNEL);
-	mutex_unlock(&nci_mutex);
-	wake_up_interruptible(&wq);
+	vdev->send_buff = skb_copy(skb, GFP_KERNEL);
+	if (!vdev->send_buff) {
+		mutex_unlock(&vdev->mtx);
+		kfree_skb(skb);
+		return -1;
+	}
+	mutex_unlock(&vdev->mtx);
+	wake_up_interruptible(&vdev->wq);
 	consume_skb(skb);
 
 	return 0;
@@ -80,29 +77,30 @@ static const struct nci_ops virtual_nci_ops = {
 static ssize_t virtual_ncidev_read(struct file *file, char __user *buf,
 				   size_t count, loff_t *ppos)
 {
+	struct virtual_nci_dev *vdev = file->private_data;
 	size_t actual_len;
 
-	mutex_lock(&nci_mutex);
-	while (!send_buff) {
-		mutex_unlock(&nci_mutex);
-		if (wait_event_interruptible(wq, send_buff))
+	mutex_lock(&vdev->mtx);
+	while (!vdev->send_buff) {
+		mutex_unlock(&vdev->mtx);
+		if (wait_event_interruptible(vdev->wq, vdev->send_buff))
 			return -EFAULT;
-		mutex_lock(&nci_mutex);
+		mutex_lock(&vdev->mtx);
 	}
 
-	actual_len = min_t(size_t, count, send_buff->len);
+	actual_len = min_t(size_t, count, vdev->send_buff->len);
 
-	if (copy_to_user(buf, send_buff->data, actual_len)) {
-		mutex_unlock(&nci_mutex);
+	if (copy_to_user(buf, vdev->send_buff->data, actual_len)) {
+		mutex_unlock(&vdev->mtx);
 		return -EFAULT;
 	}
 
-	skb_pull(send_buff, actual_len);
-	if (send_buff->len == 0) {
-		consume_skb(send_buff);
-		send_buff = NULL;
+	skb_pull(vdev->send_buff, actual_len);
+	if (vdev->send_buff->len == 0) {
+		consume_skb(vdev->send_buff);
+		vdev->send_buff = NULL;
 	}
-	mutex_unlock(&nci_mutex);
+	mutex_unlock(&vdev->mtx);
 
 	return actual_len;
 }
@@ -111,6 +109,7 @@ static ssize_t virtual_ncidev_write(struct file *file,
 				    const char __user *buf,
 				    size_t count, loff_t *ppos)
 {
+	struct virtual_nci_dev *vdev = file->private_data;
 	struct sk_buff *skb;
 
 	skb = alloc_skb(count, GFP_KERNEL);
@@ -122,63 +121,58 @@ static ssize_t virtual_ncidev_write(struct file *file,
 		return -EFAULT;
 	}
 
-	nci_recv_frame(ndev, skb);
+	nci_recv_frame(vdev->ndev, skb);
 	return count;
 }
 
 static int virtual_ncidev_open(struct inode *inode, struct file *file)
 {
 	int ret = 0;
+	struct virtual_nci_dev *vdev;
 
-	mutex_lock(&nci_mutex);
-	if (state != virtual_ncidev_disabled) {
-		mutex_unlock(&nci_mutex);
-		return -EBUSY;
-	}
-
-	ndev = nci_allocate_device(&virtual_nci_ops, VIRTUAL_NFC_PROTOCOLS,
-				   0, 0);
-	if (!ndev) {
-		mutex_unlock(&nci_mutex);
+	vdev = kzalloc(sizeof(*vdev), GFP_KERNEL);
+	if (!vdev)
+		return -ENOMEM;
+	vdev->ndev = nci_allocate_device(&virtual_nci_ops,
+		VIRTUAL_NFC_PROTOCOLS, 0, 0);
+	if (!vdev->ndev) {
+		kfree(vdev);
 		return -ENOMEM;
 	}
 
-	ret = nci_register_device(ndev);
+	mutex_init(&vdev->mtx);
+	init_waitqueue_head(&vdev->wq);
+	file->private_data = vdev;
+	nci_set_drvdata(vdev->ndev, vdev);
+
+	ret = nci_register_device(vdev->ndev);
 	if (ret < 0) {
-		nci_free_device(ndev);
-		mutex_unlock(&nci_mutex);
+		nci_free_device(vdev->ndev);
+		mutex_destroy(&vdev->mtx);
+		kfree(vdev);
 		return ret;
 	}
-	state = virtual_ncidev_enabled;
-	mutex_unlock(&nci_mutex);
 
 	return 0;
 }
 
 static int virtual_ncidev_close(struct inode *inode, struct file *file)
 {
-	mutex_lock(&nci_mutex);
+	struct virtual_nci_dev *vdev = file->private_data;
 
-	if (state == virtual_ncidev_enabled) {
-		state = virtual_ncidev_disabling;
-		mutex_unlock(&nci_mutex);
-
-		nci_unregister_device(ndev);
-		nci_free_device(ndev);
-
-		mutex_lock(&nci_mutex);
-	}
-
-	state = virtual_ncidev_disabled;
-	mutex_unlock(&nci_mutex);
+	nci_unregister_device(vdev->ndev);
+	nci_free_device(vdev->ndev);
+	mutex_destroy(&vdev->mtx);
+	kfree(vdev);
 
 	return 0;
 }
 
-static long virtual_ncidev_ioctl(struct file *flip, unsigned int cmd,
+static long virtual_ncidev_ioctl(struct file *file, unsigned int cmd,
 				 unsigned long arg)
 {
-	const struct nfc_dev *nfc_dev = ndev->nfc_dev;
+	struct virtual_nci_dev *vdev = file->private_data;
+	const struct nfc_dev *nfc_dev = vdev->ndev->nfc_dev;
 	void __user *p = (void __user *)arg;
 
 	if (cmd != IOCTL_GET_NCIDEV_IDX)
@@ -199,14 +193,15 @@ static const struct file_operations virtual_ncidev_fops = {
 	.unlocked_ioctl = virtual_ncidev_ioctl
 };
 
+static struct miscdevice miscdev = {
+	.minor = MISC_DYNAMIC_MINOR,
+	.name = "virtual_nci",
+	.fops = &virtual_ncidev_fops,
+	.mode = 0600,
+};
+
 static int __init virtual_ncidev_init(void)
 {
-	state = virtual_ncidev_disabled;
-	miscdev.minor = MISC_DYNAMIC_MINOR;
-	miscdev.name = "virtual_nci";
-	miscdev.fops = &virtual_ncidev_fops;
-	miscdev.mode = 0600;
-
 	return misc_register(&miscdev);
 }