linux-kernel - [PATCH 2/4] driver core: platform: use put_device() if device

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Message-Id: <3118280595730def453e9ed89a16c9a8783490f3.1520747459.git.arvind.yadav.cs@gmail.com>
Date:   Sun, 11 Mar 2018 11:25:49 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 2/4] driver core: platform: use put_device() if device_register fail

if device_register() returned an error! Always use put_device()
to give up the reference initialized.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/base/platform.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index f1bf7b3..8075ddc 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -1153,8 +1153,10 @@ int __init platform_bus_init(void)
 	early_platform_cleanup();
 
 	error = device_register(&platform_bus);
-	if (error)
+	if (error) {
+		put_device(&platform_bus);
 		return error;
+	}
 	error =  bus_register(&platform_bus_type);
 	if (error)
 		device_unregister(&platform_bus);
-- 
2.7.4