diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/misc/idmouse.c | 16 |
1 files changed, 2 insertions, 14 deletions
diff --git a/drivers/usb/misc/idmouse.c b/drivers/usb/misc/idmouse.c index 3944a55ed74..1dc3e0f7301 100644 --- a/drivers/usb/misc/idmouse.c +++ b/drivers/usb/misc/idmouse.c @@ -319,20 +319,8 @@ static ssize_t idmouse_read(struct file *file, char __user *buffer, size_t count return -ENODEV; } - if (*ppos >= IMGSIZE) { - up (&dev->sem); - return 0; - } - - count = min ((loff_t)count, IMGSIZE - (*ppos)); - - if (copy_to_user (buffer, dev->bulk_in_buffer + *ppos, count)) { - result = -EFAULT; - } else { - result = count; - *ppos += count; - } - + result = simple_read_from_buffer(buffer, count, ppos, + dev->bulk_in_buffer, IMGSIZE); /* unlock the device */ up(&dev->sem); return result; |