[PATCH 1/1] ahci: Enable SB600 64bit DMA on MSI K9AGM2 (MS-7327)

[Mark Nelson <mdnelson8@gmail.com>]

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 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>
---
  drivers/ata/ahci.c |   16 ++++++++++++++++
  1 file changed, 16 insertions(+)

Index: linux-2.6/drivers/ata/ahci.c
===================================================================
--- linux-2.6.orig/drivers/ata/ahci.c
+++ linux-2.6/drivers/ata/ahci.c
@@ -777,6 +777,22 @@ 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)
  		 */