commit ff0173c1a3ce003e361a8045ded905c285c3f08f
Author: Mark Nelson <mdnelson8@gmail.com>
Date:   Thu Jun 28 12:32:14 2012 +1000

    ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327) v2
    
    Like e65cc194f7628ecaa02462f22f42fb09b50dcd49 (ahci: Enable SB600 64bit
    DMA on MSI K9A2 Platinum) and 3c4aa91f21f65b7b40bdfb015eacbcb8453ccae2
    (ahci: Enable SB600 64bit DMA on Asus M3A), this patch enables 64bit DMA
    for the AHCI SATA controller of another board that has the SB600
    southbridge.
    
    In this case though we're enabling 64bit DMA for another MSI motherboard,
    the K9AGM2 or MS-7327. It is new enough that all of the BIOS releases
    since the initial release (1.0 from 2007-02-09) work correctly with 64bit
    DMA enabled.
    
    Signed-off-by: Mark Nelson <mdnelson8@gmail.com>
    Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index ebaf67e..20da1bc 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -786,6 +786,22 @@ static bool ahci_sb600_enable_64bit(stru
 			},
 		},
 		/*
+		 * All BIOS versions for the MSI K9AGM2 (MS-7327) support
+		 * 64bit DMA.
+		 *
+		 * This board also had the typo mentioned above in the
+		 * Manufacturer DMI field (fixed in BIOS version 1.5), so
+		 * match on DMI_BOARD_VENDOR of "MICRO-STAR INTER" again.
+		 */
+		{
+			.ident = "MSI K9AGM2",
+			.matches = {
+				DMI_MATCH(DMI_BOARD_VENDOR,
+					  "MICRO-STAR INTER"),
+				DMI_MATCH(DMI_BOARD_NAME, "MS-7327"),
+			},
+		},
+		/*
 		 * All BIOS versions for the Asus M3A support 64bit DMA.
 		 * (all release versions from 0301 to 1206 were tested)
 		 */