From: Mark Nelson <mdnelson8@gmail.com>
Date: Mon, 27 Jun 2011 06:33:44 +0000 (+1000)
Subject: ahci: Enable SB600 64bit DMA on Asus M3A
X-Git-Tag: v3.0.7~6
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a1164796d1ed6196c037429d796db5ffdb2674e3;p=karo-tx-linux.git

ahci: Enable SB600 64bit DMA on Asus M3A

commit 3c4aa91f21f65b7b40bdfb015eacbcb8453ccae2 upstream.

Like e65cc194f7628ecaa02462f22f42fb09b50dcd49 this patch enables 64bit DMA
for the AHCI SATA controller of a board that has the SB600 southbridge. In
this case though we're enabling 64bit DMA for the Asus M3A motherboard. It
is a new enough board that all of the BIOS releases since the initial
release (0301 from 2007-10-22) work correctly with 64bit DMA enabled.

Signed-off-by: Mark Nelson <mdnelson8@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index cab69605d1fd..1e9ab9bf8549 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -812,6 +812,18 @@ static bool ahci_sb600_enable_64bit(struct pci_dev *pdev)
 				DMI_MATCH(DMI_BOARD_NAME, "MS-7376"),
 			},
 		},
+		/*
+		 * All BIOS versions for the Asus M3A support 64bit DMA.
+		 * (all release versions from 0301 to 1206 were tested)
+		 */
+		{
+			.ident = "ASUS M3A",
+			.matches = {
+				DMI_MATCH(DMI_BOARD_VENDOR,
+					  "ASUSTeK Computer INC."),
+				DMI_MATCH(DMI_BOARD_NAME, "M3A"),
+			},
+		},
 		{ }
 	};
 	const struct dmi_system_id *match;