Patchwork net: sxgbe: Added phy_found error path

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Submitter Byungho An
Date April 18, 2014, 11:59 a.m.
Message ID <000701cf5afd$ad1e65f0$075b31d0$%an@samsung.com>
Download mbox | patch
Permalink /patch/340284/
State Accepted
Delegated to: David Miller
Headers show

Comments

Byungho An - April 18, 2014, 11:59 a.m.
This patch adds phy_found error path when there is no phy device 
and changes bus_name.

Signed-off-by: Byungho An <bh74.an@samsung.com>
---
 drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c |   14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)
David Miller - April 22, 2014, 8:07 p.m.
From: Byungho An <bh74.an@samsung.com>
Date: Fri, 18 Apr 2014 20:59:39 +0900

> This patch adds phy_found error path when there is no phy device 
> and changes bus_name.
> 
> Signed-off-by: Byungho An <bh74.an@samsung.com>

Applied, thanks.
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Patch

diff --git a/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c b/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c
index 01af2cb..7dcaf1a 100644
--- a/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c
+++ b/drivers/net/ethernet/samsung/sxgbe/sxgbe_mdio.c
@@ -27,7 +27,7 @@ 
 #define SXGBE_SMA_PREAD_CMD	0x02 /* post read  increament address */
 #define SXGBE_SMA_READ_CMD	0x03 /* read command */
 #define SXGBE_SMA_SKIP_ADDRFRM	0x00040000 /* skip the address frame */
-#define SXGBE_MII_BUSY		0x00800000 /* mii busy */
+#define SXGBE_MII_BUSY		0x00400000 /* mii busy */
 
 static int sxgbe_mdio_busy_wait(void __iomem *ioaddr, unsigned int mii_data)
 {
@@ -147,6 +147,7 @@  int sxgbe_mdio_register(struct net_device *ndev)
 	struct sxgbe_mdio_bus_data *mdio_data = priv->plat->mdio_bus_data;
 	int err, phy_addr;
 	int *irqlist;
+	bool phy_found = false;
 	bool act;
 
 	/* allocate the new mdio bus */
@@ -162,7 +163,7 @@  int sxgbe_mdio_register(struct net_device *ndev)
 		irqlist = priv->mii_irq;
 
 	/* assign mii bus fields */
-	mdio_bus->name = "samsxgbe";
+	mdio_bus->name = "sxgbe";
 	mdio_bus->read = &sxgbe_mdio_read;
 	mdio_bus->write = &sxgbe_mdio_write;
 	snprintf(mdio_bus->id, MII_BUS_ID_SIZE, "%s-%x",
@@ -216,13 +217,22 @@  int sxgbe_mdio_register(struct net_device *ndev)
 			netdev_info(ndev, "PHY ID %08x at %d IRQ %s (%s)%s\n",
 				    phy->phy_id, phy_addr, irq_str,
 				    dev_name(&phy->dev), act ? " active" : "");
+			phy_found = true;
 		}
 	}
 
+	if (!phy_found) {
+		netdev_err(ndev, "PHY not found\n");
+		goto phyfound_err;
+	}
+
 	priv->mii = mdio_bus;
 
 	return 0;
 
+phyfound_err:
+	err = -ENODEV;
+	mdiobus_unregister(mdio_bus);
 mdiobus_err:
 	mdiobus_free(mdio_bus);
 	return err;