linux-kernel - [PATCH 5.2 004/124] net: hns3: adjust hns3_uninit_phy()s location in the hns3_client

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Message-Id: <20190919214819.348401191@linuxfoundation.org>
Date:   Fri, 20 Sep 2019 00:01:32 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Huazhong Tan <tanhuazhong@...wei.com>,
        Peng Li <lipeng321@...wei.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 5.2 004/124] net: hns3: adjust hns3_uninit_phy()s location in the hns3_client_uninit()

From: Huazhong Tan <tanhuazhong@...wei.com>

commit 0d2f68c7bcf4c7bbdd6f810f7b6e658f43d4461e upstream.

hns3_uninit_phy() should be called before checking
HNS3_NIC_STATE_INITED flags, otherwise when this checking fails,
there is nobody to call hns3_uninit_phy().

Fixes: c8a8045b2d0a ("net: hns3: Fix NULL deref when unloading driver")
Signed-off-by: Huazhong Tan <tanhuazhong@...wei.com>
Signed-off-by: Peng Li <lipeng321@...wei.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/ethernet/hisilicon/hns3/hns3_enet.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -3896,6 +3896,8 @@ static void hns3_client_uninit(struct hn
 
 	hns3_client_stop(handle);
 
+	hns3_uninit_phy(netdev);
+
 	if (!test_and_clear_bit(HNS3_NIC_STATE_INITED, &priv->state)) {
 		netdev_warn(netdev, "already uninitialized\n");
 		goto out_netdev_free;
@@ -3905,8 +3907,6 @@ static void hns3_client_uninit(struct hn
 
 	hns3_clear_all_ring(handle, true);
 
-	hns3_uninit_phy(netdev);
-
 	hns3_nic_uninit_vector_data(priv);
 
 	ret = hns3_nic_dealloc_vector_data(priv);