netdev - [net-next-2.6 PATCH] igb: add check for fiber/serdes devices to igb_set_spd

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Message-ID: <20101013082611.24740.80297.stgit@localhost.localdomain>
Date:	Wed, 13 Oct 2010 01:27:02 -0700
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, gospo@...hat.com, bphilips@...ell.com,
	Carolyn Wyborny <carolyn.wyborny@...el.com>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net-next-2.6 PATCH] igb: add check for fiber/serdes devices to
	igb_set_spd_dplx; 

From: Carolyn Wyborny <carolyn.wyborny@...el.com>

Signed-off-by: Carolyn Wyborny <carolyn.wyborny@...el.com>
Tested-by: Emil Tantilov <emil.s.tantilov@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---

 drivers/net/igb/igb_main.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c
index 55edcb7..5b04eff 100644
--- a/drivers/net/igb/igb_main.c
+++ b/drivers/net/igb/igb_main.c
@@ -6115,6 +6115,13 @@ int igb_set_spd_dplx(struct igb_adapter *adapter, u16 spddplx)
 
 	mac->autoneg = 0;
 
+	/* Fiber NIC's only allow 1000 Gbps Full duplex */
+	if ((adapter->hw.phy.media_type == e1000_media_type_internal_serdes) &&
+		spddplx != (SPEED_1000 + DUPLEX_FULL)) {
+		dev_err(&pdev->dev, "Unsupported Speed/Duplex configuration\n");
+		return -EINVAL;
+	}
+
 	switch (spddplx) {
 	case SPEED_10 + DUPLEX_HALF:
 		mac->forced_speed_duplex = ADVERTISE_10_HALF;

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