X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Finput%2Fmisc%2Fuinput.c;h=d723e9ad7c41a103ce092db1b45068b98b8acd9b;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=158c8e845ff988a690c79f3f921e6ea39250df25;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git

diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c
index 158c8e845..d723e9ad7 100644
--- a/drivers/input/misc/uinput.c
+++ b/drivers/input/misc/uinput.c
@@ -36,16 +36,6 @@
 #include <linux/miscdevice.h>
 #include <linux/uinput.h>
 
-static int uinput_dev_open(struct input_dev *dev)
-{
-	return 0;
-}
-
-static void uinput_dev_close(struct input_dev *dev)
-{
-
-}
-
 static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
 {
 	struct uinput_device	*udev;
@@ -63,22 +53,24 @@ static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned i
 	return 0;
 }
 
-static int uinput_request_alloc_id(struct input_dev *dev, struct uinput_request *request)
+static int uinput_request_alloc_id(struct uinput_device *udev, struct uinput_request *request)
 {
 	/* Atomically allocate an ID for the given request. Returns 0 on success. */
-	struct uinput_device *udev = dev->private;
 	int id;
+	int err = -1;
 
-	down(&udev->requests_sem);
-	for (id=0; id<UINPUT_NUM_REQUESTS; id++)
+	spin_lock(&udev->requests_lock);
+
+	for (id = 0; id < UINPUT_NUM_REQUESTS; id++)
 		if (!udev->requests[id]) {
-			udev->requests[id] = request;
 			request->id = id;
-			up(&udev->requests_sem);
-			return 0;
+			udev->requests[id] = request;
+			err = 0;
+			break;
 		}
-	up(&udev->requests_sem);
-	return -1;
+
+	spin_unlock(&udev->requests_lock);
+	return err;
 }
 
 static struct uinput_request* uinput_request_find(struct uinput_device *udev, int id)
@@ -86,135 +78,131 @@ static struct uinput_request* uinput_request_find(struct uinput_device *udev, in
 	/* Find an input request, by ID. Returns NULL if the ID isn't valid. */
 	if (id >= UINPUT_NUM_REQUESTS || id < 0)
 		return NULL;
-	if (udev->requests[id]->completed)
-		return NULL;
 	return udev->requests[id];
 }
 
-static void uinput_request_init(struct input_dev *dev, struct uinput_request *request, int code)
+static inline int uinput_request_reserve_slot(struct uinput_device *udev, struct uinput_request *request)
 {
-	struct uinput_device *udev = dev->private;
+	/* Allocate slot. If none are available right away, wait. */
+	return wait_event_interruptible(udev->requests_waitq,
+					!uinput_request_alloc_id(udev, request));
+}
 
-	memset(request, 0, sizeof(struct uinput_request));
-	request->code = code;
-	init_waitqueue_head(&request->waitq);
+static void uinput_request_done(struct uinput_device *udev, struct uinput_request *request)
+{
+	/* Mark slot as available */
+	udev->requests[request->id] = NULL;
+	wake_up(&udev->requests_waitq);
 
-	/* Allocate an ID. If none are available right away, wait. */
-	request->retval = wait_event_interruptible(udev->requests_waitq,
-				       !uinput_request_alloc_id(dev, request));
+	complete(&request->done);
 }
 
-static void uinput_request_submit(struct input_dev *dev, struct uinput_request *request)
+static int uinput_request_submit(struct input_dev *dev, struct uinput_request *request)
 {
-	struct uinput_device *udev = dev->private;
-	int retval;
-
 	/* Tell our userspace app about this new request by queueing an input event */
 	uinput_dev_event(dev, EV_UINPUT, request->code, request->id);
 
 	/* Wait for the request to complete */
-	retval = wait_event_interruptible(request->waitq, request->completed);
-	if (retval)
-		request->retval = retval;
-
-	/* Release this request's ID, let others know it's available */
-	udev->requests[request->id] = NULL;
-	wake_up_interruptible(&udev->requests_waitq);
+	wait_for_completion(&request->done);
+	return request->retval;
 }
 
 static int uinput_dev_upload_effect(struct input_dev *dev, struct ff_effect *effect)
 {
 	struct uinput_request request;
+	int retval;
 
 	if (!test_bit(EV_FF, dev->evbit))
 		return -ENOSYS;
 
-	uinput_request_init(dev, &request, UI_FF_UPLOAD);
-	if (request.retval)
-		return request.retval;
+	request.id = -1;
+	init_completion(&request.done);
+	request.code = UI_FF_UPLOAD;
 	request.u.effect = effect;
-	uinput_request_submit(dev, &request);
-	return request.retval;
+
+	retval = uinput_request_reserve_slot(dev->private, &request);
+	if (!retval)
+		retval = uinput_request_submit(dev, &request);
+
+	return retval;
 }
 
 static int uinput_dev_erase_effect(struct input_dev *dev, int effect_id)
 {
 	struct uinput_request request;
+	int retval;
 
 	if (!test_bit(EV_FF, dev->evbit))
 		return -ENOSYS;
 
-	uinput_request_init(dev, &request, UI_FF_ERASE);
-	if (request.retval)
-		return request.retval;
+	request.id = -1;
+	init_completion(&request.done);
+	request.code = UI_FF_ERASE;
 	request.u.effect_id = effect_id;
-	uinput_request_submit(dev, &request);
-	return request.retval;
+
+	retval = uinput_request_reserve_slot(dev->private, &request);
+	if (!retval)
+		retval = uinput_request_submit(dev, &request);
+
+	return retval;
 }
 
-static int uinput_create_device(struct uinput_device *udev)
+static void uinput_destroy_device(struct uinput_device *udev)
 {
-	if (!udev->dev->name) {
-		printk(KERN_DEBUG "%s: write device info first\n", UINPUT_NAME);
-		return -EINVAL;
+	const char *name, *phys;
+
+	if (udev->dev) {
+		name = udev->dev->name;
+		phys = udev->dev->phys;
+		if (udev->state == UIST_CREATED)
+			input_unregister_device(udev->dev);
+		else
+			input_free_device(udev->dev);
+		kfree(name);
+		kfree(phys);
+		udev->dev = NULL;
 	}
 
-	udev->dev->open = uinput_dev_open;
-	udev->dev->close = uinput_dev_close;
-	udev->dev->event = uinput_dev_event;
-	udev->dev->upload_effect = uinput_dev_upload_effect;
-	udev->dev->erase_effect = uinput_dev_erase_effect;
-	udev->dev->private = udev;
-
-	init_waitqueue_head(&(udev->waitq));
-
-	input_register_device(udev->dev);
-
-	set_bit(UIST_CREATED, &(udev->state));
-
-	return 0;
+	udev->state = UIST_NEW_DEVICE;
 }
 
-static int uinput_destroy_device(struct uinput_device *udev)
+static int uinput_create_device(struct uinput_device *udev)
 {
-	if (!test_bit(UIST_CREATED, &(udev->state))) {
-		printk(KERN_WARNING "%s: create the device first\n", UINPUT_NAME);
+	int error;
+
+	if (udev->state != UIST_SETUP_COMPLETE) {
+		printk(KERN_DEBUG "%s: write device info first\n", UINPUT_NAME);
 		return -EINVAL;
 	}
 
-	input_unregister_device(udev->dev);
+	error = input_register_device(udev->dev);
+	if (error) {
+		uinput_destroy_device(udev);
+		return error;
+	}
 
-	clear_bit(UIST_CREATED, &(udev->state));
+	udev->state = UIST_CREATED;
 
 	return 0;
 }
 
 static int uinput_open(struct inode *inode, struct file *file)
 {
-	struct uinput_device	*newdev;
-	struct input_dev	*newinput;
+	struct uinput_device *newdev;
 
-	newdev = kmalloc(sizeof(struct uinput_device), GFP_KERNEL);
+	newdev = kzalloc(sizeof(struct uinput_device), GFP_KERNEL);
 	if (!newdev)
-		goto error;
-	memset(newdev, 0, sizeof(struct uinput_device));
-	init_MUTEX(&newdev->requests_sem);
-	init_waitqueue_head(&newdev->requests_waitq);
-
-	newinput = kmalloc(sizeof(struct input_dev), GFP_KERNEL);
-	if (!newinput)
-		goto cleanup;
-	memset(newinput, 0, sizeof(struct input_dev));
+		return -ENOMEM;
 
-	newdev->dev = newinput;
+	mutex_init(&newdev->mutex);
+	spin_lock_init(&newdev->requests_lock);
+	init_waitqueue_head(&newdev->requests_waitq);
+	init_waitqueue_head(&newdev->waitq);
+	newdev->state = UIST_NEW_DEVICE;
 
 	file->private_data = newdev;
 
 	return 0;
-cleanup:
-	kfree(newdev);
-error:
-	return -ENOMEM;
 }
 
 static int uinput_validate_absbits(struct input_dev *dev)
@@ -248,41 +236,62 @@ static int uinput_validate_absbits(struct input_dev *dev)
 	return retval;
 }
 
-static int uinput_alloc_device(struct file *file, const char __user *buffer, size_t count)
+static int uinput_allocate_device(struct uinput_device *udev)
+{
+	udev->dev = input_allocate_device();
+	if (!udev->dev)
+		return -ENOMEM;
+
+	udev->dev->event = uinput_dev_event;
+	udev->dev->upload_effect = uinput_dev_upload_effect;
+	udev->dev->erase_effect = uinput_dev_erase_effect;
+	udev->dev->private = udev;
+
+	return 0;
+}
+
+static int uinput_setup_device(struct uinput_device *udev, const char __user *buffer, size_t count)
 {
 	struct uinput_user_dev	*user_dev;
 	struct input_dev	*dev;
-	struct uinput_device	*udev;
-	int			size,
-				retval;
+	char			*name;
+	int			size;
+	int			retval;
 
-	retval = count;
+	if (count != sizeof(struct uinput_user_dev))
+		return -EINVAL;
+
+	if (!udev->dev) {
+		retval = uinput_allocate_device(udev);
+		if (retval)
+			return retval;
+	}
 
-	udev = file->private_data;
 	dev = udev->dev;
 
-	user_dev = kmalloc(sizeof(*user_dev), GFP_KERNEL);
-	if (!user_dev) {
-		retval = -ENOMEM;
-		goto exit;
-	}
+	user_dev = kmalloc(sizeof(struct uinput_user_dev), GFP_KERNEL);
+	if (!user_dev)
+		return -ENOMEM;
 
 	if (copy_from_user(user_dev, buffer, sizeof(struct uinput_user_dev))) {
 		retval = -EFAULT;
 		goto exit;
 	}
 
-	if (NULL != dev->name)
-		kfree(dev->name);
-
 	size = strnlen(user_dev->name, UINPUT_MAX_NAME_SIZE) + 1;
-	dev->name = kmalloc(size, GFP_KERNEL);
-	if (!dev->name) {
+	if (!size) {
+		retval = -EINVAL;
+		goto exit;
+	}
+
+	kfree(dev->name);
+	dev->name = name = kmalloc(size, GFP_KERNEL);
+	if (!name) {
 		retval = -ENOMEM;
 		goto exit;
 	}
+	strlcpy(name, user_dev->name, size);
 
-	strlcpy(dev->name, user_dev->name, size);
 	dev->id.bustype	= user_dev->id.bustype;
 	dev->id.vendor	= user_dev->id.vendor;
 	dev->id.product	= user_dev->id.product;
@@ -300,29 +309,48 @@ static int uinput_alloc_device(struct file *file, const char __user *buffer, siz
 	if (test_bit(EV_ABS, dev->evbit)) {
 		retval = uinput_validate_absbits(dev);
 		if (retval < 0)
-			kfree(dev->name);
+			goto exit;
 	}
 
-exit:
+	udev->state = UIST_SETUP_COMPLETE;
+	retval = count;
+
+ exit:
 	kfree(user_dev);
 	return retval;
 }
 
+static inline ssize_t uinput_inject_event(struct uinput_device *udev, const char __user *buffer, size_t count)
+{
+	struct input_event ev;
+
+	if (count != sizeof(struct input_event))
+		return -EINVAL;
+
+	if (copy_from_user(&ev, buffer, sizeof(struct input_event)))
+		return -EFAULT;
+
+	input_event(udev->dev, ev.type, ev.code, ev.value);
+
+	return sizeof(struct input_event);
+}
+
 static ssize_t uinput_write(struct file *file, const char __user *buffer, size_t count, loff_t *ppos)
 {
 	struct uinput_device *udev = file->private_data;
+	int retval;
 
-	if (test_bit(UIST_CREATED, &(udev->state))) {
-		struct input_event	ev;
+	retval = mutex_lock_interruptible(&udev->mutex);
+	if (retval)
+		return retval;
 
-		if (copy_from_user(&ev, buffer, sizeof(struct input_event)))
-			return -EFAULT;
-		input_event(udev->dev, ev.type, ev.code, ev.value);
-	}
-	else
-		count = uinput_alloc_device(file, buffer, count);
+	retval = udev->state == UIST_CREATED ?
+			uinput_inject_event(udev, buffer, count) :
+			uinput_setup_device(udev, buffer, count);
 
-	return count;
+	mutex_unlock(&udev->mutex);
+
+	return retval;
 }
 
 static ssize_t uinput_read(struct file *file, char __user *buffer, size_t count, loff_t *ppos)
@@ -330,30 +358,38 @@ static ssize_t uinput_read(struct file *file, char __user *buffer, size_t count,
 	struct uinput_device *udev = file->private_data;
 	int retval = 0;
 
-	if (!test_bit(UIST_CREATED, &(udev->state)))
+	if (udev->state != UIST_CREATED)
 		return -ENODEV;
 
-	if ((udev->head == udev->tail) && (file->f_flags & O_NONBLOCK))
+	if (udev->head == udev->tail && (file->f_flags & O_NONBLOCK))
 		return -EAGAIN;
 
 	retval = wait_event_interruptible(udev->waitq,
-			(udev->head != udev->tail) ||
-			!test_bit(UIST_CREATED, &(udev->state)));
+			udev->head != udev->tail || udev->state != UIST_CREATED);
+	if (retval)
+		return retval;
 
+	retval = mutex_lock_interruptible(&udev->mutex);
 	if (retval)
 		return retval;
 
-	if (!test_bit(UIST_CREATED, &(udev->state)))
-		return -ENODEV;
+	if (udev->state != UIST_CREATED) {
+		retval = -ENODEV;
+		goto out;
+	}
 
-	while ((udev->head != udev->tail) &&
-	    (retval + sizeof(struct input_event) <= count)) {
-		if (copy_to_user(buffer + retval, &(udev->buff[udev->tail]),
-		    sizeof(struct input_event))) return -EFAULT;
+	while (udev->head != udev->tail && retval + sizeof(struct input_event) <= count) {
+		if (copy_to_user(buffer + retval, &udev->buff[udev->tail], sizeof(struct input_event))) {
+			retval = -EFAULT;
+			goto out;
+		}
 		udev->tail = (udev->tail + 1) % UINPUT_BUFFER_SIZE;
 		retval += sizeof(struct input_event);
 	}
 
+ out:
+	mutex_unlock(&udev->mutex);
+
 	return retval;
 }
 
@@ -369,52 +405,48 @@ static unsigned int uinput_poll(struct file *file, poll_table *wait)
 	return 0;
 }
 
-static int uinput_burn_device(struct uinput_device *udev)
+static int uinput_release(struct inode *inode, struct file *file)
 {
-	if (test_bit(UIST_CREATED, &(udev->state)))
-		uinput_destroy_device(udev);
-
-	if (NULL != udev->dev->name)
-		kfree(udev->dev->name);
-	if (NULL != udev->dev->phys)
-		kfree(udev->dev->phys);
+	struct uinput_device *udev = file->private_data;
 
-	kfree(udev->dev);
+	uinput_destroy_device(udev);
 	kfree(udev);
 
 	return 0;
 }
 
-static int uinput_close(struct inode *inode, struct file *file)
-{
-	return uinput_burn_device(file->private_data);
-}
-
-static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
+#define uinput_set_bit(_arg, _bit, _max)		\
+({							\
+	int __ret = 0;					\
+	if (udev->state == UIST_CREATED)		\
+		__ret =  -EINVAL;			\
+	else if ((_arg) > (_max))			\
+		__ret = -EINVAL;			\
+	else set_bit((_arg), udev->dev->_bit);		\
+	__ret;						\
+})
+
+static long uinput_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 {
-	int			retval = 0;
+	int			retval;
 	struct uinput_device	*udev;
 	void __user             *p = (void __user *)arg;
 	struct uinput_ff_upload ff_up;
 	struct uinput_ff_erase  ff_erase;
 	struct uinput_request   *req;
 	int                     length;
+	char			*phys;
 
 	udev = file->private_data;
 
-	/* device attributes can not be changed after the device is created */
-	switch (cmd) {
-		case UI_SET_EVBIT:
-		case UI_SET_KEYBIT:
-		case UI_SET_RELBIT:
-		case UI_SET_ABSBIT:
-		case UI_SET_MSCBIT:
-		case UI_SET_LEDBIT:
-		case UI_SET_SNDBIT:
-		case UI_SET_FFBIT:
-		case UI_SET_PHYS:
-			if (test_bit(UIST_CREATED, &(udev->state)))
-				return -EINVAL;
+	retval = mutex_lock_interruptible(&udev->mutex);
+	if (retval)
+		return retval;
+
+	if (!udev->dev) {
+		retval = uinput_allocate_device(udev);
+		if (retval)
+			goto out;
 	}
 
 	switch (cmd) {
@@ -423,93 +455,68 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
 			break;
 
 		case UI_DEV_DESTROY:
-			retval = uinput_destroy_device(udev);
+			uinput_destroy_device(udev);
 			break;
 
 		case UI_SET_EVBIT:
-			if (arg > EV_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->evbit);
+			retval = uinput_set_bit(arg, evbit, EV_MAX);
 			break;
 
 		case UI_SET_KEYBIT:
-			if (arg > KEY_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->keybit);
+			retval = uinput_set_bit(arg, keybit, KEY_MAX);
 			break;
 
 		case UI_SET_RELBIT:
-			if (arg > REL_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->relbit);
+			retval = uinput_set_bit(arg, relbit, REL_MAX);
 			break;
 
 		case UI_SET_ABSBIT:
-			if (arg > ABS_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->absbit);
+			retval = uinput_set_bit(arg, absbit, ABS_MAX);
 			break;
 
 		case UI_SET_MSCBIT:
-			if (arg > MSC_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->mscbit);
+			retval = uinput_set_bit(arg, mscbit, MSC_MAX);
 			break;
 
 		case UI_SET_LEDBIT:
-			if (arg > LED_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->ledbit);
+			retval = uinput_set_bit(arg, ledbit, LED_MAX);
 			break;
 
 		case UI_SET_SNDBIT:
-			if (arg > SND_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->sndbit);
+			retval = uinput_set_bit(arg, sndbit, SND_MAX);
 			break;
 
 		case UI_SET_FFBIT:
-			if (arg > FF_MAX) {
-				retval = -EINVAL;
-				break;
-			}
-			set_bit(arg, udev->dev->ffbit);
+			retval = uinput_set_bit(arg, ffbit, FF_MAX);
+			break;
+
+		case UI_SET_SWBIT:
+			retval = uinput_set_bit(arg, swbit, SW_MAX);
 			break;
 
 		case UI_SET_PHYS:
+			if (udev->state == UIST_CREATED) {
+				retval = -EINVAL;
+				goto out;
+			}
 			length = strnlen_user(p, 1024);
 			if (length <= 0) {
 				retval = -EFAULT;
 				break;
 			}
-			if (NULL != udev->dev->phys)
-				kfree(udev->dev->phys);
-			udev->dev->phys = kmalloc(length, GFP_KERNEL);
-			if (!udev->dev->phys) {
+			kfree(udev->dev->phys);
+			udev->dev->phys = phys = kmalloc(length, GFP_KERNEL);
+			if (!phys) {
 				retval = -ENOMEM;
 				break;
 			}
-			if (copy_from_user(udev->dev->phys, p, length)) {
-				retval = -EFAULT;
-				kfree(udev->dev->phys);
+			if (copy_from_user(phys, p, length)) {
 				udev->dev->phys = NULL;
+				kfree(phys);
+				retval = -EFAULT;
 				break;
 			}
-			udev->dev->phys[length-1] = '\0';
+			phys[length - 1] = '\0';
 			break;
 
 		case UI_BEGIN_FF_UPLOAD:
@@ -518,7 +525,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
 				break;
 			}
 			req = uinput_request_find(udev, ff_up.request_id);
-			if (!(req && req->code==UI_FF_UPLOAD && req->u.effect)) {
+			if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) {
 				retval = -EINVAL;
 				break;
 			}
@@ -536,7 +543,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
 				break;
 			}
 			req = uinput_request_find(udev, ff_erase.request_id);
-			if (!(req && req->code==UI_FF_ERASE)) {
+			if (!(req && req->code == UI_FF_ERASE)) {
 				retval = -EINVAL;
 				break;
 			}
@@ -554,14 +561,13 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
 				break;
 			}
 			req = uinput_request_find(udev, ff_up.request_id);
-			if (!(req && req->code==UI_FF_UPLOAD && req->u.effect)) {
+			if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) {
 				retval = -EINVAL;
 				break;
 			}
 			req->retval = ff_up.retval;
 			memcpy(req->u.effect, &ff_up.effect, sizeof(struct ff_effect));
-			req->completed = 1;
-			wake_up_interruptible(&req->waitq);
+			uinput_request_done(udev, req);
 			break;
 
 		case UI_END_FF_ERASE:
@@ -570,35 +576,37 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
 				break;
 			}
 			req = uinput_request_find(udev, ff_erase.request_id);
-			if (!(req && req->code==UI_FF_ERASE)) {
+			if (!(req && req->code == UI_FF_ERASE)) {
 				retval = -EINVAL;
 				break;
 			}
 			req->retval = ff_erase.retval;
-			req->completed = 1;
-			wake_up_interruptible(&req->waitq);
+			uinput_request_done(udev, req);
 			break;
 
 		default:
 			retval = -EINVAL;
 	}
+
+ out:
+	mutex_unlock(&udev->mutex);
 	return retval;
 }
 
 static struct file_operations uinput_fops = {
-	.owner =	THIS_MODULE,
-	.open =		uinput_open,
-	.release =	uinput_close,
-	.read =		uinput_read,
-	.write =	uinput_write,
-	.poll =		uinput_poll,
-	.ioctl =	uinput_ioctl,
+	.owner		= THIS_MODULE,
+	.open		= uinput_open,
+	.release	= uinput_release,
+	.read		= uinput_read,
+	.write		= uinput_write,
+	.poll		= uinput_poll,
+	.unlocked_ioctl	= uinput_ioctl,
 };
 
 static struct miscdevice uinput_misc = {
-	.fops =		&uinput_fops,
-	.minor =	UINPUT_MINOR,
-	.name =		UINPUT_NAME,
+	.fops		= &uinput_fops,
+	.minor		= UINPUT_MINOR,
+	.name		= UINPUT_NAME,
 };
 
 static int __init uinput_init(void)