linux-kernel - [PATCH] rbd: Fix uninitialized variable use in rbd_acquire

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Date:   Thu, 13 Jul 2017 15:46:35 +0800
From:   Kefeng Wang <wangkefeng.wang@...wei.com>
To:     Ilya Dryomov <idryomov@...il.com>, Sage Weil <sage@...hat.com>,
        Alex Elder <elder@...nel.org>,
        Mike Christie <mchristi@...hat.com>
CC:     <linux-kernel@...r.kernel.org>,
        Kefeng Wang <wangkefeng.wang@...wei.com>
Subject: [PATCH] rbd: Fix uninitialized variable use in rbd_acquire_lock

drivers/block/rbd.c: In function 'rbd_acquire_lock':
drivers/block/rbd.c:3602:44: error: 'ret' may be used uninitialized in this function [-Werror=maybe-uninitialized]

Silence the warning, found it when built old kernel(3.10) with
OBS(opensuse build service).

Signed-off-by: Kefeng Wang <wangkefeng.wang@...wei.com>
---
 drivers/block/rbd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index b008b6a..b640ad8 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -3435,7 +3435,7 @@ static void rbd_acquire_lock(struct work_struct *work)
 	struct rbd_device *rbd_dev = container_of(to_delayed_work(work),
 					    struct rbd_device, lock_dwork);
 	enum rbd_lock_state lock_state;
-	int ret;
+	int ret = 0;
 
 	dout("%s rbd_dev %p\n", __func__, rbd_dev);
 again:
-- 
1.7.12.4