linux-kernel - [PATCH 07/14] net: axienet: Support phy-less mode of operation

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Message-Id: <2dce248d6285beb10f3d4fcfba3c3a087e2c139f.1392220536.git.michal.simek@xilinx.com>
Date:	Wed, 12 Feb 2014 16:55:41 +0100
From:	Michal Simek <michal.simek@...inx.com>
To:	netdev@...r.kernel.org
Cc:	Srikanth Thokala <sthokal@...inx.com>,
	Srikanth Thokala <srikanth.thokala@...inx.com>,
	Michal Simek <monstr@...str.eu>,
	Anirudha Sarangi <anirudh@...inx.com>,
	John Linn <John.Linn@...inx.com>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 07/14] net: axienet: Support phy-less mode of operation

From: Srikanth Thokala <srikanth.thokala@...inx.com>

This patch adds proper checks to handle the PHY-less case.

Signed-off-by: Srikanth Thokala <sthokal@...inx.com>
Signed-off-by: Michal Simek <michal.simek@...inx.com>
---

 drivers/net/ethernet/xilinx/xilinx_axienet_main.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
index 9595403..9cc9e59 100644
--- a/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
+++ b/drivers/net/ethernet/xilinx/xilinx_axienet_main.c
@@ -940,11 +940,10 @@ static int axienet_open(struct net_device *ndev)
 					     PHY_INTERFACE_MODE_RGMII_ID);
 		}

-		if (!lp->phy_dev) {
+		if (!lp->phy_dev)
 			dev_err(lp->dev, "of_phy_connect() failed\n");
-			return -ENODEV;
-		}
-		phy_start(lp->phy_dev);
+		else
+			phy_start(lp->phy_dev);
 	}

 	/* Enable tasklets for Axi DMA error handling */
@@ -1609,7 +1608,8 @@ static int axienet_of_probe(struct platform_device *op)
 	lp->coalesce_count_tx = XAXIDMA_DFT_TX_THRESHOLD;

 	lp->phy_node = of_parse_phandle(op->dev.of_node, "phy-handle", 0);
-	ret = axienet_mdio_setup(lp, op->dev.of_node);
+	if (lp->phy_node)
+		ret = axienet_mdio_setup(lp, op->dev.of_node);
 	if (ret)
 		dev_warn(&op->dev, "error registering MDIO bus\n");

--
1.8.2.3


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