From 152c12f568d4fc6e9a7dfd42f2d51347fb41d9b7 Mon Sep 17 00:00:00 2001 From: Dmitry Torokhov Date: Thu, 30 Jun 2005 00:47:50 -0500 Subject: Input: clean up uinput driver (formatting, extra braces) Signed-off-by: Dmitry Torokhov --- drivers/input/misc/uinput.c | 81 ++++++++++++++++++++------------------------- 1 file changed, 35 insertions(+), 46 deletions(-) (limited to 'drivers/input') diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c index 98710997aaaa..9c3d20073ae3 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -36,16 +36,6 @@ #include #include -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; @@ -68,17 +58,20 @@ static int uinput_request_alloc_id(struct input_dev *dev, struct uinput_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; idrequests[id]) { udev->requests[id] = request; request->id = id; - up(&udev->requests_sem); - return 0; + err = 0; + break; } + up(&udev->requests_sem); - return -1; + return err; } static struct uinput_request* uinput_request_find(struct uinput_device *udev, int id) @@ -101,7 +94,7 @@ static void uinput_request_init(struct input_dev *dev, struct uinput_request *re /* Allocate an ID. If none are available right away, wait. */ request->retval = wait_event_interruptible(udev->requests_waitq, - !uinput_request_alloc_id(dev, request)); + !uinput_request_alloc_id(dev, request)); } static void uinput_request_submit(struct input_dev *dev, struct uinput_request *request) @@ -159,32 +152,30 @@ static int uinput_create_device(struct uinput_device *udev) return -EINVAL; } - 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)); + init_waitqueue_head(&udev->waitq); input_register_device(udev->dev); - set_bit(UIST_CREATED, &(udev->state)); + set_bit(UIST_CREATED, &udev->state); return 0; } static int uinput_destroy_device(struct uinput_device *udev) { - if (!test_bit(UIST_CREATED, &(udev->state))) { + if (!test_bit(UIST_CREATED, &udev->state)) { printk(KERN_WARNING "%s: create the device first\n", UINPUT_NAME); return -EINVAL; } input_unregister_device(udev->dev); - clear_bit(UIST_CREATED, &(udev->state)); + clear_bit(UIST_CREATED, &udev->state); return 0; } @@ -253,15 +244,15 @@ static int uinput_alloc_device(struct file *file, const char __user *buffer, siz struct uinput_user_dev *user_dev; struct input_dev *dev; struct uinput_device *udev; - int size, - retval; + int size; + int retval; retval = count; udev = file->private_data; dev = udev->dev; - user_dev = kmalloc(sizeof(*user_dev), GFP_KERNEL); + user_dev = kmalloc(sizeof(struct uinput_user_dev), GFP_KERNEL); if (!user_dev) { retval = -ENOMEM; goto exit; @@ -272,7 +263,7 @@ static int uinput_alloc_device(struct file *file, const char __user *buffer, siz goto exit; } - if (NULL != dev->name) + if (dev->name) kfree(dev->name); size = strnlen(user_dev->name, UINPUT_MAX_NAME_SIZE) + 1; @@ -314,14 +305,13 @@ static ssize_t uinput_write(struct file *file, const char __user *buffer, size_t { struct uinput_device *udev = file->private_data; - if (test_bit(UIST_CREATED, &(udev->state))) { + if (test_bit(UIST_CREATED, &udev->state)) { struct input_event ev; if (copy_from_user(&ev, buffer, sizeof(struct input_event))) return -EFAULT; input_event(udev->dev, ev.type, ev.code, ev.value); - } - else + } else count = uinput_alloc_device(file, buffer, count); return count; @@ -332,26 +322,24 @@ 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 (!test_bit(UIST_CREATED, &udev->state)) 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 || !test_bit(UIST_CREATED, &udev->state)); if (retval) return retval; - if (!test_bit(UIST_CREATED, &(udev->state))) + if (!test_bit(UIST_CREATED, &udev->state)) return -ENODEV; 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; + if (copy_to_user(buffer + retval, &udev->buff[udev->tail], sizeof(struct input_event))) + return -EFAULT; udev->tail = (udev->tail + 1) % UINPUT_BUFFER_SIZE; retval += sizeof(struct input_event); } @@ -373,12 +361,12 @@ static unsigned int uinput_poll(struct file *file, poll_table *wait) static int uinput_burn_device(struct uinput_device *udev) { - if (test_bit(UIST_CREATED, &(udev->state))) + if (test_bit(UIST_CREATED, &udev->state)) uinput_destroy_device(udev); - if (NULL != udev->dev->name) + if (udev->dev->name) kfree(udev->dev->name); - if (NULL != udev->dev->phys) + if (udev->dev->phys) kfree(udev->dev->phys); kfree(udev->dev); @@ -389,7 +377,8 @@ static int uinput_burn_device(struct uinput_device *udev) static int uinput_close(struct inode *inode, struct file *file) { - return uinput_burn_device(file->private_data); + uinput_burn_device(file->private_data); + return 0; } static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) @@ -415,7 +404,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd case UI_SET_SNDBIT: case UI_SET_FFBIT: case UI_SET_PHYS: - if (test_bit(UIST_CREATED, &(udev->state))) + if (test_bit(UIST_CREATED, &udev->state)) return -EINVAL; } @@ -511,7 +500,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd udev->dev->phys = NULL; break; } - udev->dev->phys[length-1] = '\0'; + udev->dev->phys[length - 1] = '\0'; break; case UI_BEGIN_FF_UPLOAD: @@ -520,7 +509,7 @@ 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; } @@ -538,7 +527,7 @@ 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; } @@ -556,7 +545,7 @@ 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; } @@ -572,7 +561,7 @@ 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; } -- cgit v1.2.2