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path: root/drivers/char/raw.c
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Diffstat (limited to 'drivers/char/raw.c')
-rw-r--r--drivers/char/raw.c50
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)