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unregister_blkdev(): return void

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Put WARN_ON and fixed all callers of unregister_blkdev().  Now we can make
unregister_blkdev return void.

Cc: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Akinobu Mita 2007-07-17 04:03:47 -07:00 committed by Linus Torvalds
parent c6d4d63489
commit f4480240f7
2 changed files with 2 additions and 7 deletions
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7
block/genhd.c
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@ -108,13 +108,11 @@ out:
EXPORT_SYMBOL(register_blkdev);
/* todo: make void - error printk here */
int unregister_blkdev(unsigned int major, const char *name)
void unregister_blkdev(unsigned int major, const char *name)
{
struct blk_major_name **n;
struct blk_major_name *p = NULL;
int index = major_to_index(major);
int ret = 0;
mutex_lock(&block_subsys_lock);
for (n = &major_names[index]; *n; n = &(*n)->next)
@ -122,15 +120,12 @@ int unregister_blkdev(unsigned int major, const char *name)
break;
if (!*n || strcmp((*n)->name, name)) {
WARN_ON(1);
ret = -EINVAL;
} else {
p = *n;
*n = p->next;
}
mutex_unlock(&block_subsys_lock);
kfree(p);
return ret;
}
EXPORT_SYMBOL(unregister_blkdev);

2
include/linux/fs.h
View file

@ -1527,7 +1527,7 @@ extern void putname(const char *name);
#ifdef CONFIG_BLOCK
extern int register_blkdev(unsigned int, const char *);
extern int unregister_blkdev(unsigned int, const char *);
extern void unregister_blkdev(unsigned int, const char *);
extern struct block_device *bdget(dev_t);
extern void bd_set_size(struct block_device *, loff_t size);
extern void bd_forget(struct inode *inode);