diff options
Diffstat (limited to 'drivers/char/raw.c')
-rw-r--r-- | drivers/char/raw.c | 50 |
1 files changed, 14 insertions, 36 deletions
diff --git a/drivers/char/raw.c b/drivers/char/raw.c index 579868af4a5..89b718e326e 100644 --- a/drivers/char/raw.c +++ b/drivers/char/raw.c @@ -238,39 +238,14 @@ out: return err; } -static ssize_t raw_file_write(struct file *file, const char __user *buf, - size_t count, loff_t *ppos) -{ - struct iovec local_iov = { - .iov_base = (char __user *)buf, - .iov_len = count - }; - - return generic_file_write_nolock(file, &local_iov, 1, ppos); -} - -static ssize_t raw_file_aio_write(struct kiocb *iocb, const char __user *buf, - size_t count, loff_t pos) -{ - struct iovec local_iov = { - .iov_base = (char __user *)buf, - .iov_len = count - }; - - return generic_file_aio_write_nolock(iocb, &local_iov, 1, &iocb->ki_pos); -} - - static const struct file_operations raw_fops = { - .read = generic_file_read, + .read = do_sync_read, .aio_read = generic_file_aio_read, - .write = raw_file_write, - .aio_write = raw_file_aio_write, + .write = do_sync_write, + .aio_write = generic_file_aio_write_nolock, .open = raw_open, .release= raw_release, .ioctl = raw_ioctl, - .readv = generic_file_readv, - .writev = generic_file_writev, .owner = THIS_MODULE, }; @@ -288,31 +263,34 @@ static struct cdev raw_cdev = { static int __init raw_init(void) { dev_t dev = MKDEV(RAW_MAJOR, 0); + int ret; - if (register_chrdev_region(dev, MAX_RAW_MINORS, "raw")) + ret = register_chrdev_region(dev, MAX_RAW_MINORS, "raw"); + if (ret) goto error; cdev_init(&raw_cdev, &raw_fops); - if (cdev_add(&raw_cdev, dev, MAX_RAW_MINORS)) { + ret = cdev_add(&raw_cdev, dev, MAX_RAW_MINORS); + if (ret) { kobject_put(&raw_cdev.kobj); - unregister_chrdev_region(dev, MAX_RAW_MINORS); - goto error; + goto error_region; } raw_class = class_create(THIS_MODULE, "raw"); if (IS_ERR(raw_class)) { printk(KERN_ERR "Error creating raw class.\n"); cdev_del(&raw_cdev); - unregister_chrdev_region(dev, MAX_RAW_MINORS); - goto error; + ret = PTR_ERR(raw_class); + goto error_region; } class_device_create(raw_class, NULL, MKDEV(RAW_MAJOR, 0), NULL, "rawctl"); return 0; +error_region: + unregister_chrdev_region(dev, MAX_RAW_MINORS); error: - printk(KERN_ERR "error register raw device\n"); - return 1; + return ret; } static void __exit raw_exit(void) |