From: Mark Nelson <mdnels...@gmail.com>
-------------------
This is a commit scheduled for the next v2.6.34 longterm release.
http://git.kernel.org/?p=linux/kernel/git/paulg/longterm-queue-2.6.34.git
If you see a problem with using this for longterm, please comment.
-------------------
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 <mdnels...@gmail.com>
Signed-off-by: Jeff Garzik <jgar...@pobox.com>
Signed-off-by: Paul Gortmaker <paul.gortma...@windriver.com>
---
drivers/ata/ahci.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 9215998..a5b1fd9 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -2981,6 +2981,18 @@ 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;
--
1.7.12.rc2
--
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