linux-kernel - [PATCH 2/2] rpmsg: smd: use put_device() if device

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Message-Id: <340cac8a81a84cf3054f8adcdb169f740b212c34.1520501519.git.arvind.yadav.cs@gmail.com>
Date:   Thu,  8 Mar 2018 15:06:08 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     ohad@...ery.com, bjorn.andersson@...aro.org
Cc:     linux-kernel@...r.kernel.org, linux-remoteproc@...r.kernel.org
Subject: [PATCH 2/2] rpmsg: smd: use put_device() if device_register fail

if device_register() returned an error! Always use put_device()
to give up the reference initialized. unregister device for
other return error.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/rpmsg/qcom_smd.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
index 92d0c6a..ff8101a 100644
--- a/drivers/rpmsg/qcom_smd.c
+++ b/drivers/rpmsg/qcom_smd.c
@@ -1408,6 +1408,7 @@ struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent,
 	ret = device_register(&edge->dev);
 	if (ret) {
 		pr_err("failed to register smd edge\n");
+		put_device(&edge->dev);
 		return ERR_PTR(ret);
 	}
 
@@ -1428,7 +1429,7 @@ struct qcom_smd_edge *qcom_smd_register_edge(struct device *parent,
 	return edge;
 
 unregister_dev:
-	put_device(&edge->dev);
+	device_unregister(&edge->dev);
 	return ERR_PTR(ret);
 }
 EXPORT_SYMBOL(qcom_smd_register_edge);
-- 
1.9.1