diff options
| -rw-r--r-- | drivers/staging/unisys/visorchipset/file.c | 80 |
1 files changed, 37 insertions, 43 deletions
diff --git a/drivers/staging/unisys/visorchipset/file.c b/drivers/staging/unisys/visorchipset/file.c index 8bea8a9..203de0b 100644 --- a/drivers/staging/unisys/visorchipset/file.c +++ b/drivers/staging/unisys/visorchipset/file.c @@ -31,49 +31,6 @@ static struct cdev file_cdev; static struct visorchannel **file_controlvm_channel; -static int visorchipset_open(struct inode *inode, struct file *file); -static int visorchipset_release(struct inode *inode, struct file *file); -static int visorchipset_mmap(struct file *file, struct vm_area_struct *vma); -static long visorchipset_ioctl(struct file *file, unsigned int cmd, - unsigned long arg); - -static const struct file_operations visorchipset_fops = { - .owner = THIS_MODULE, - .open = visorchipset_open, - .read = NULL, - .write = NULL, - .unlocked_ioctl = visorchipset_ioctl, - .release = visorchipset_release, - .mmap = visorchipset_mmap, -}; - -int -visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel) -{ - int rc = 0; - - file_controlvm_channel = controlvm_channel; - cdev_init(&file_cdev, &visorchipset_fops); - file_cdev.owner = THIS_MODULE; - if (MAJOR(major_dev) == 0) { - rc = alloc_chrdev_region(&major_dev, 0, 1, MYDRVNAME); - /* dynamic major device number registration required */ - if (rc < 0) - return rc; - } else { - /* static major device number registration required */ - rc = register_chrdev_region(major_dev, 1, MYDRVNAME); - if (rc < 0) - return rc; - } - rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1); - if (rc < 0) { - unregister_chrdev_region(major_dev, 1); - return rc; - } - return 0; -} - void visorchipset_file_cleanup(dev_t major_dev) { @@ -164,3 +121,40 @@ static long visorchipset_ioctl(struct file *file, unsigned int cmd, return -EFAULT; } } + +static const struct file_operations visorchipset_fops = { + .owner = THIS_MODULE, + .open = visorchipset_open, + .read = NULL, + .write = NULL, + .unlocked_ioctl = visorchipset_ioctl, + .release = visorchipset_release, + .mmap = visorchipset_mmap, +}; + +int +visorchipset_file_init(dev_t major_dev, struct visorchannel **controlvm_channel) +{ + int rc = 0; + + file_controlvm_channel = controlvm_channel; + cdev_init(&file_cdev, &visorchipset_fops); + file_cdev.owner = THIS_MODULE; + if (MAJOR(major_dev) == 0) { + rc = alloc_chrdev_region(&major_dev, 0, 1, MYDRVNAME); + /* dynamic major device number registration required */ + if (rc < 0) + return rc; + } else { + /* static major device number registration required */ + rc = register_chrdev_region(major_dev, 1, MYDRVNAME); + if (rc < 0) + return rc; + } + rc = cdev_add(&file_cdev, MKDEV(MAJOR(major_dev), 0), 1); + if (rc < 0) { + unregister_chrdev_region(major_dev, 1); + return rc; + } + return 0; +} |