netdev - [PATCH AUTOSEL 5.10 20/30] net: axienet: setup mdio unconditionally

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Date:   Mon, 11 Apr 2022 20:48:54 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Andy Chiu <andy.chiu@...ive.com>,
        Greentime Hu <greentime.hu@...ive.com>,
        Robert Hancock <robert.hancock@...ian.com>,
        Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>,
        Andrew Lunn <andrew@...n.ch>,
        "David S . Miller" <davem@...emloft.net>,
        Sasha Levin <sashal@...nel.org>, kuba@...nel.org,
        pabeni@...hat.com, michal.simek@...inx.com, netdev@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCH AUTOSEL 5.10 20/30] net: axienet: setup mdio unconditionally

From: Andy Chiu <andy.chiu@...ive.com>

[ Upstream commit d1c4f93e3f0a023024a6f022a61528c06cf1daa9 ]

The call to axienet_mdio_setup should not depend on whether "phy-node"
pressents on the DT. Besides, since `lp->phy_node` is used if PHY is in
SGMII or 100Base-X modes, move it into the if statement. And the next patch
will remove `lp->phy_node` from driver's private structure and do an
of_node_put on it right away after use since it is not used elsewhere.

Signed-off-by: Andy Chiu <andy.chiu@...ive.com>
Reviewed-by: Greentime Hu <greentime.hu@...ive.com>
Reviewed-by: Robert Hancock <robert.hancock@...ian.com>
Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>
Reviewed-by: Andrew Lunn <andrew@...n.ch>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index bbdcba88c021..3d91baf2e55a 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -2060,15 +2060,14 @@ static int axienet_probe(struct platform_device *pdev)
 	if (ret)
 		goto cleanup_clk;
 
-	lp->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
-	if (lp->phy_node) {
-		ret = axienet_mdio_setup(lp);
-		if (ret)
-			dev_warn(&pdev->dev,
-				 "error registering MDIO bus: %d\n", ret);
-	}
+	ret = axienet_mdio_setup(lp);
+	if (ret)
+		dev_warn(&pdev->dev,
+			 "error registering MDIO bus: %d\n", ret);
+
 	if (lp->phy_mode == PHY_INTERFACE_MODE_SGMII ||
 	    lp->phy_mode == PHY_INTERFACE_MODE_1000BASEX) {
+		lp->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
 		if (!lp->phy_node) {
 			dev_err(&pdev->dev, "phy-handle required for 1000BaseX/SGMII\n");
 			ret = -EINVAL;
-- 
2.35.1