netdev - [PATCH] net: hns: Fix object reference leaks in hns_dsaf_roce

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Message-Id: <1550126505-28394-1-git-send-email-huang.zijiang@zte.com.cn>
Date:   Thu, 14 Feb 2019 14:41:45 +0800
From:   Huang Zijiang <huang.zijiang@....com.cn>
To:     yisen.zhuang@...wei.com
Cc:     salil.mehta@...wei.com, davem@...emloft.net, lipeng321@...wei.com,
        liuyonglong@...wei.com, yuehaibing@...wei.com,
        keescook@...omium.org, wangxi11@...wei.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, wang.yi59@....com.cn,
        Huang Zijiang <huang.zijiang@....com.cn>
Subject: [PATCH] net: hns: Fix object reference leaks in hns_dsaf_roce_reset()

The of_find_device_by_node() takes a reference to the underlying device
structure, we should release that reference.

Signed-off-by: Huang Zijiang <huang.zijiang@....com.cn>
---
 drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
index 14d7ec7..697d929 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_dsaf_main.c
@@ -3081,6 +3081,7 @@ int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset)
 	dsaf_dev = dev_get_drvdata(&pdev->dev);
 	if (!dsaf_dev) {
 		dev_err(&pdev->dev, "dsaf_dev is NULL\n");
+		put_device(&pdev->dev);
 		return -ENODEV;
 	}
 
@@ -3088,6 +3089,7 @@ int hns_dsaf_roce_reset(struct fwnode_handle *dsaf_fwnode, bool dereset)
 	if (AE_IS_VER1(dsaf_dev->dsaf_ver)) {
 		dev_err(dsaf_dev->dev, "%s v1 chip doesn't support RoCE!\n",
 			dsaf_dev->ae_dev.name);
+		put_device(&pdev->dev);
 		return -ENODEV;
 	}
 
-- 
1.8.3.1