netdev - [PATCH net-next 7/7] net:fec: iMX6 FEC does not support half-duplex gigabit

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Date:	Tue, 29 Apr 2014 20:09:10 +0800
From:	Frank Li <Frank.Li@...escale.com>
To:	<lznuaa@...il.com>, <shawn.guo@...aro.org>, <B38611@...escale.com>,
	<davem@...emloft.net>, <rmk+kernel@....linux.org.uk>
CC:	<linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
	Frank Li <Frank.Li@...escale.com>
Subject: [PATCH net-next 7/7] net:fec: iMX6 FEC does not support half-duplex gigabit

From: Russell King <rmk+kernel@....linux.org.uk>

The iMX6 gigabit FEC does not support half-duplex gigabit operation.
Phys attacked to the FEC may support this, and we currently do nothing
to disable this feature.  This may result in an invalid configuration.
Mask out phy support for gigabit half-duplex operation.

Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
Signed-off-by: Frank Li <Frank.Li@...escale.com>
---
 drivers/net/ethernet/freescale/fec_main.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/net/ethernet/freescale/fec_main.c b/drivers/net/ethernet/freescale/fec_main.c
index 1c84f3a..d9109ac 100644
--- a/drivers/net/ethernet/freescale/fec_main.c
+++ b/drivers/net/ethernet/freescale/fec_main.c
@@ -1316,6 +1316,7 @@ static int fec_enet_mii_probe(struct net_device *ndev)
 	/* mask with MAC supported features */
 	if (id_entry->driver_data & FEC_QUIRK_HAS_GBIT) {
 		phy_dev->supported &= PHY_GBIT_FEATURES;
+		phy_dev->supported &= ~SUPPORTED_1000baseT_Half;
 #if !defined(CONFIG_M5272)
 		phy_dev->supported |= SUPPORTED_Pause;
 #endif
-- 
1.7.8

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