bd_claim_by_disk: fix warning
Fix this:
fs/block_dev.c: In function 'bd_claim_by_disk':
fs/block_dev.c:970: warning: 'found' may be used uninitialized in this function
and given that free_bd_holder() now needs free(NULL)-is-legal behaviour, we
can simplify bd_release_from_kobject().
Cc: Bjorn Steinbrink <B.Steinbrink@gmx.de>
Cc: Johannes Weiner <hannes-kernel@saeurebad.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/fs/block_dev.c b/fs/block_dev.c
index 75c47a2..3635315 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -963,20 +963,20 @@
err = bd_claim(bdev, holder);
if (err)
- goto out;
+ goto fail;
found = find_bd_holder(bdev, bo);
if (found)
- goto out;
+ goto fail;
err = add_bd_holder(bdev, bo);
if (err)
bd_release(bdev);
-
-out:
- if (err || found)
- free_bd_holder(bo);
+ else
+ bo = NULL;
+fail:
mutex_unlock(&bdev->bd_mutex);
+ free_bd_holder(bo);
return err;
}
@@ -991,15 +991,12 @@
static void bd_release_from_kobject(struct block_device *bdev,
struct kobject *kobj)
{
- struct bd_holder *bo;
-
if (!kobj)
return;
mutex_lock(&bdev->bd_mutex);
bd_release(bdev);
- if ((bo = del_bd_holder(bdev, kobj)))
- free_bd_holder(bo);
+ free_bd_holder(del_bd_holder(bdev, kobj));
mutex_unlock(&bdev->bd_mutex);
}