mirror of https://gitee.com/openkylin/linux.git
Input: clean up uinput driver (formatting, extra braces)
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov
parent
9b4311eedb
commit
152c12f568
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@ -36,16 +36,6 @@
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#include <linux/miscdevice.h>
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#include <linux/uinput.h>
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static int uinput_dev_open(struct input_dev *dev)
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{
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return 0;
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}
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static void uinput_dev_close(struct input_dev *dev)
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{
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}
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static int uinput_dev_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
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{
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struct uinput_device *udev;
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@ -68,17 +58,20 @@ static int uinput_request_alloc_id(struct input_dev *dev, struct uinput_request
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/* Atomically allocate an ID for the given request. Returns 0 on success. */
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struct uinput_device *udev = dev->private;
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int id;
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int err = -1;
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down(&udev->requests_sem);
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for (id=0; id<UINPUT_NUM_REQUESTS; id++)
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for (id = 0; id < UINPUT_NUM_REQUESTS; id++)
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if (!udev->requests[id]) {
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udev->requests[id] = request;
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request->id = id;
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up(&udev->requests_sem);
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return 0;
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err = 0;
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break;
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}
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up(&udev->requests_sem);
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return -1;
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return err;
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}
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static struct uinput_request* uinput_request_find(struct uinput_device *udev, int id)
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@ -159,32 +152,30 @@ static int uinput_create_device(struct uinput_device *udev)
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return -EINVAL;
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}
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udev->dev->open = uinput_dev_open;
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udev->dev->close = uinput_dev_close;
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udev->dev->event = uinput_dev_event;
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udev->dev->upload_effect = uinput_dev_upload_effect;
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udev->dev->erase_effect = uinput_dev_erase_effect;
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udev->dev->private = udev;
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init_waitqueue_head(&(udev->waitq));
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init_waitqueue_head(&udev->waitq);
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input_register_device(udev->dev);
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set_bit(UIST_CREATED, &(udev->state));
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set_bit(UIST_CREATED, &udev->state);
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return 0;
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}
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static int uinput_destroy_device(struct uinput_device *udev)
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{
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if (!test_bit(UIST_CREATED, &(udev->state))) {
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if (!test_bit(UIST_CREATED, &udev->state)) {
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printk(KERN_WARNING "%s: create the device first\n", UINPUT_NAME);
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return -EINVAL;
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}
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input_unregister_device(udev->dev);
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clear_bit(UIST_CREATED, &(udev->state));
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clear_bit(UIST_CREATED, &udev->state);
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return 0;
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}
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@ -253,15 +244,15 @@ static int uinput_alloc_device(struct file *file, const char __user *buffer, siz
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struct uinput_user_dev *user_dev;
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struct input_dev *dev;
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struct uinput_device *udev;
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int size,
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retval;
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int size;
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int retval;
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retval = count;
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udev = file->private_data;
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dev = udev->dev;
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user_dev = kmalloc(sizeof(*user_dev), GFP_KERNEL);
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user_dev = kmalloc(sizeof(struct uinput_user_dev), GFP_KERNEL);
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if (!user_dev) {
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retval = -ENOMEM;
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goto exit;
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@ -272,7 +263,7 @@ static int uinput_alloc_device(struct file *file, const char __user *buffer, siz
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goto exit;
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}
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if (NULL != dev->name)
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if (dev->name)
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kfree(dev->name);
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size = strnlen(user_dev->name, UINPUT_MAX_NAME_SIZE) + 1;
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@ -314,14 +305,13 @@ static ssize_t uinput_write(struct file *file, const char __user *buffer, size_t
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{
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struct uinput_device *udev = file->private_data;
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if (test_bit(UIST_CREATED, &(udev->state))) {
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if (test_bit(UIST_CREATED, &udev->state)) {
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struct input_event ev;
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if (copy_from_user(&ev, buffer, sizeof(struct input_event)))
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return -EFAULT;
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input_event(udev->dev, ev.type, ev.code, ev.value);
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}
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else
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} else
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count = uinput_alloc_device(file, buffer, count);
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return count;
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@ -332,26 +322,24 @@ static ssize_t uinput_read(struct file *file, char __user *buffer, size_t count,
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struct uinput_device *udev = file->private_data;
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int retval = 0;
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if (!test_bit(UIST_CREATED, &(udev->state)))
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if (!test_bit(UIST_CREATED, &udev->state))
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return -ENODEV;
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if ((udev->head == udev->tail) && (file->f_flags & O_NONBLOCK))
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if (udev->head == udev->tail && (file->f_flags & O_NONBLOCK))
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return -EAGAIN;
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retval = wait_event_interruptible(udev->waitq,
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(udev->head != udev->tail) ||
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!test_bit(UIST_CREATED, &(udev->state)));
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udev->head != udev->tail || !test_bit(UIST_CREATED, &udev->state));
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if (retval)
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return retval;
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if (!test_bit(UIST_CREATED, &(udev->state)))
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if (!test_bit(UIST_CREATED, &udev->state))
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return -ENODEV;
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while ((udev->head != udev->tail) &&
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(retval + sizeof(struct input_event) <= count)) {
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if (copy_to_user(buffer + retval, &(udev->buff[udev->tail]),
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sizeof(struct input_event))) return -EFAULT;
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if (copy_to_user(buffer + retval, &udev->buff[udev->tail], sizeof(struct input_event)))
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return -EFAULT;
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udev->tail = (udev->tail + 1) % UINPUT_BUFFER_SIZE;
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retval += sizeof(struct input_event);
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}
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@ -373,12 +361,12 @@ static unsigned int uinput_poll(struct file *file, poll_table *wait)
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static int uinput_burn_device(struct uinput_device *udev)
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{
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if (test_bit(UIST_CREATED, &(udev->state)))
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if (test_bit(UIST_CREATED, &udev->state))
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uinput_destroy_device(udev);
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if (NULL != udev->dev->name)
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if (udev->dev->name)
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kfree(udev->dev->name);
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if (NULL != udev->dev->phys)
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if (udev->dev->phys)
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kfree(udev->dev->phys);
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kfree(udev->dev);
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@ -389,7 +377,8 @@ static int uinput_burn_device(struct uinput_device *udev)
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static int uinput_close(struct inode *inode, struct file *file)
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{
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return uinput_burn_device(file->private_data);
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uinput_burn_device(file->private_data);
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return 0;
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}
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static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
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@ -415,7 +404,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
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case UI_SET_SNDBIT:
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case UI_SET_FFBIT:
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case UI_SET_PHYS:
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if (test_bit(UIST_CREATED, &(udev->state)))
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if (test_bit(UIST_CREATED, &udev->state))
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return -EINVAL;
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}
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@ -511,7 +500,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
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udev->dev->phys = NULL;
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break;
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}
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udev->dev->phys[length-1] = '\0';
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udev->dev->phys[length - 1] = '\0';
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break;
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case UI_BEGIN_FF_UPLOAD:
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@ -520,7 +509,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
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break;
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}
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req = uinput_request_find(udev, ff_up.request_id);
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if (!(req && req->code==UI_FF_UPLOAD && req->u.effect)) {
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if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) {
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retval = -EINVAL;
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break;
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}
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@ -538,7 +527,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
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break;
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}
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req = uinput_request_find(udev, ff_erase.request_id);
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if (!(req && req->code==UI_FF_ERASE)) {
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if (!(req && req->code == UI_FF_ERASE)) {
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retval = -EINVAL;
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break;
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}
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@ -556,7 +545,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
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break;
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}
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req = uinput_request_find(udev, ff_up.request_id);
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if (!(req && req->code==UI_FF_UPLOAD && req->u.effect)) {
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if (!(req && req->code == UI_FF_UPLOAD && req->u.effect)) {
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retval = -EINVAL;
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break;
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}
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@ -572,7 +561,7 @@ static int uinput_ioctl(struct inode *inode, struct file *file, unsigned int cmd
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break;
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}
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req = uinput_request_find(udev, ff_erase.request_id);
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if (!(req && req->code==UI_FF_ERASE)) {
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if (!(req && req->code == UI_FF_ERASE)) {
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retval = -EINVAL;
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break;
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}
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