netdev - [PATCH] skge: Add DMA mask quirk for Marvell 88E8001 on ASUS P5NSLI motherboard

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Message-Id: <1349715275-12730-1-git-send-email-jan.ceuleers@computer.org>
Date:	Mon,  8 Oct 2012 18:54:35 +0200
From:	Jan Ceuleers <jan.ceuleers@...puter.org>
To:	"David S. Miller" <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, Graham Gower <graham.gower@...il.com>,
	Stephen Hemminger <shemminger@...tta.com>
Subject: [PATCH] skge: Add DMA mask quirk for Marvell 88E8001 on ASUS P5NSLI motherboard

From: Graham Gower <graham.gower@...il.com>

Marvell 88E8001 on an ASUS P5NSLI motherboard is unable to send/receive
packets on a system with >4gb ram unless a 32bit DMA mask is used.

This issue has been around for years and a fix was sent 3.5 years ago, but
there was some debate as to whether it should instead be fixed as a PCI quirk.
http://www.spinics.net/lists/netdev/msg88670.html

However, 18 months later a similar workaround was introduced for another
chipset exhibiting the same problem.
http://www.spinics.net/lists/netdev/msg142287.html

Signed-off-by: Graham Gower <graham.gower@...il.com>
Signed-off-by: Jan Ceuleers <jan.ceuleers@...puter.org>
---
I am resubmitting Graham's v4 patch hoping that doing so will avoid further
frustration while still getting this fix into the tree.
I have not tested this; I don't have the hardware. It compiles though.

 drivers/net/ethernet/marvell/skge.c |    7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/net/ethernet/marvell/skge.c b/drivers/net/ethernet/marvell/skge.c
index 5a30bf8..05b3c83 100644
--- a/drivers/net/ethernet/marvell/skge.c
+++ b/drivers/net/ethernet/marvell/skge.c
@@ -4153,6 +4153,13 @@ static struct dmi_system_id skge_32bit_dma_boards[] = {
 			DMI_MATCH(DMI_BOARD_NAME, "nForce"),
 		},
 	},
+	{
+		.ident = "ASUS P5NSLI",
+		.matches = {
+			DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
+			DMI_MATCH(DMI_BOARD_NAME, "P5NSLI")
+		},
+	}, 
 	{}
 };
 
-- 
1.7.9.5

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