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Commit f4480240 authored by Akinobu Mita's avatar Akinobu Mita Committed by Linus Torvalds
Browse files

unregister_blkdev(): return void 



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: default avatarAkinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c6d4d634

block/genhd.c

+1 −6
Original line number Diff line number Diff line
@@ -108,13 +108,11 @@ int register_blkdev(unsigned int major, const char *name) 


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);

include/linux/fs.h

+1 −1
Original line number Diff line number Diff line
@@ -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);