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-Url: https://git.stricted.de/?a=commitdiff_plain;h=3c4aa91f21f65b7b40bdfb015eacbcb8453ccae2;p=GitHub%2Fmt8127%2Fandroid_kernel_alcatel_ttab.git

ahci: Enable SB600 64bit DMA on Asus M3A

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>
---

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index fd318ac36432..389f670ee7c6 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -753,6 +753,18 @@ 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;