linux-kernel - [PATCH] btrfs: initialize return variable

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Message-Id: <20210430180655.3328899-1-trix@redhat.com>
Date:   Fri, 30 Apr 2021 11:06:55 -0700
From:   trix@...hat.com
To:     clm@...com, josef@...icpanda.com, dsterba@...e.com
Cc:     linux-btrfs@...r.kernel.org, linux-kernel@...r.kernel.org,
        Tom Rix <trix@...hat.com>
Subject: [PATCH] btrfs: initialize return variable

From: Tom Rix <trix@...hat.com>

Static analysis reports this problem
free-space-cache.c:3965:2: warning: Undefined or garbage value returned
  return ret;
  ^~~~~~~~~~

ret is set in the node handling loop.
Treat doing nothing as a success and initialize ret to 0.

Signed-off-by: Tom Rix <trix@...hat.com>
---
 fs/btrfs/free-space-cache.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/btrfs/free-space-cache.c b/fs/btrfs/free-space-cache.c
index e54466fc101f..4806295116d8 100644
--- a/fs/btrfs/free-space-cache.c
+++ b/fs/btrfs/free-space-cache.c
@@ -3949,7 +3949,7 @@ static int cleanup_free_space_cache_v1(struct btrfs_fs_info *fs_info,
 {
 	struct btrfs_block_group *block_group;
 	struct rb_node *node;
-	int ret;
+	int ret = 0;
 
 	btrfs_info(fs_info, "cleaning free space cache v1");
 
-- 
2.26.3