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Message-Id: <20211221020123.117380-5-sashal@kernel.org>
Date:   Mon, 20 Dec 2021 21:01:19 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Miaoqian Lin <linmq006@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>, opendmb@...il.com,
        kuba@...nel.org, bcm-kernel-feedback-list@...adcom.com,
        netdev@...r.kernel.org
Subject: [PATCH AUTOSEL 4.14 5/9] net: bcmgenet: Fix NULL vs IS_ERR() checking

From: Miaoqian Lin <linmq006@...il.com>

[ Upstream commit ab8eb798ddabddb2944401bf31ead9671cb97d95 ]

The phy_attach() function does not return NULL. It returns error pointers.

Signed-off-by: Miaoqian Lin <linmq006@...il.com>
Acked-by: Florian Fainelli <f.fainelli@...il.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/broadcom/genet/bcmmii.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c
index 72fad2a63c625..e609154d1ac93 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmmii.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c
@@ -535,9 +535,9 @@ static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv)
 		 * Internal or external PHY with MDIO access
 		 */
 		phydev = phy_attach(priv->dev, phy_name, pd->phy_interface);
-		if (!phydev) {
+		if (IS_ERR(phydev)) {
 			dev_err(kdev, "failed to register PHY device\n");
-			return -ENODEV;
+			return PTR_ERR(phydev);
 		}
 	} else {
 		/*
-- 
2.34.1

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