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Commit 152c12f5 authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Input: clean up uinput driver (formatting, extra braces) 

Signed-off-by: default avatarDmitry Torokhov <dtor@mail.ru>
parent 9b4311ee
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Showing with 35 additions and 46 deletions
drivers/input/misc/uinput.c
View file @ 152c12f5
......@@ -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;
......@@ -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; id<UINPUT_NUM_REQUESTS; id++)
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;
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;
}
......
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