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block: fix compiler warning in genhd.c
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Warn if something really bad happens if we can't create this link.

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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Greg Kroah-Hartman committed Jul 22, 2008
1 parent 695794a commit 6ffeea7
Showing 1 changed file with 3 additions and 1 deletion.
4 changes: 3 additions & 1 deletion block/genhd.c
Original file line number Diff line number Diff line change
Expand Up @@ -183,6 +183,7 @@ static int exact_lock(dev_t devt, void *data)
void add_disk(struct gendisk *disk)
{
struct backing_dev_info *bdi;
int retval;

disk->flags |= GENHD_FL_UP;
blk_register_region(MKDEV(disk->major, disk->first_minor),
Expand All @@ -193,7 +194,8 @@ void add_disk(struct gendisk *disk)

bdi = &disk->queue->backing_dev_info;
bdi_register_dev(bdi, MKDEV(disk->major, disk->first_minor));
sysfs_create_link(&disk->dev.kobj, &bdi->dev->kobj, "bdi");
retval = sysfs_create_link(&disk->dev.kobj, &bdi->dev->kobj, "bdi");
WARN_ON(retval);
}

EXPORT_SYMBOL(add_disk);
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