linux-kernel - [PATCH] workqueue: use put

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Message-Id: <6ea392ae58fb06df5c1548ae804bb4d842dbd049.1520330391.git.arvind.yadav.cs@gmail.com>
Date:   Tue,  6 Mar 2018 15:31:03 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     tj@...nel.org, jiangshanlai@...il.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH] workqueue: use put_device() instead of kfee()

Never directly free @dev after calling device_register(), even
if it returned an error! Always use put_device() to give up the
reference initialized in this function instead.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 kernel/workqueue.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index bb9a519..ccd1080 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5337,7 +5337,7 @@ int workqueue_sysfs_register(struct workqueue_struct *wq)
 
 	ret = device_register(&wq_dev->dev);
 	if (ret) {
-		kfree(wq_dev);
+		put_device(&wq_dev->dev);
 		wq->wq_dev = NULL;
 		return ret;
 	}
-- 
1.9.1