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 198224b3628885e304f7f42a323cfc47936693c3..fd38ea922a912e5093c41d5568c5734b81836529 100644 (file)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -2769,6 +2769,18 @@ 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;