From: Shruti Kanetkar <Shruti@Freescale.com>
Date: Wed, 11 Jun 2014 18:41:40 +0000 (-0500)
Subject: net/fsl: Make xgmac_mdio read error message useful
X-Git-Tag: v3.16-rc1~27^2~10
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=55fd36419c1f27053f7e0cd067450b2f6a62cec8;p=karo-tx-linux.git

net/fsl: Make xgmac_mdio read error message useful

Print the device address, the register number and the PHY ID for
which the MDIO read operation failed

Signed-off-by: Shruti Kanetkar <Shruti@Freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/ethernet/freescale/xgmac_mdio.c b/drivers/net/ethernet/freescale/xgmac_mdio.c
index d449fcb90199..0c9d55c862ae 100644
--- a/drivers/net/ethernet/freescale/xgmac_mdio.c
+++ b/drivers/net/ethernet/freescale/xgmac_mdio.c
@@ -162,7 +162,9 @@ static int xgmac_mdio_read(struct mii_bus *bus, int phy_id, int regnum)
 
 	/* Return all Fs if nothing was there */
 	if (in_be32(&regs->mdio_stat) & MDIO_STAT_RD_ER) {
-		dev_err(&bus->dev, "MDIO read error\n");
+		dev_err(&bus->dev,
+			"Error while reading PHY%d reg at %d.%d\n",
+			phy_id, dev_addr, regnum);
 		return 0xffff;
 	}