| From | Paul Gortmaker <> | Subject | [v2.6.34-stable 059/165] ahci: Enable SB600 64bit DMA on Asus M3A | Date | Wed, 15 Aug 2012 15:46:43 -0400 |
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From: Mark Nelson <mdnelson8@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 <mdnelson8@gmail.com> Signed-off-by: Jeff Garzik <jgarzik@pobox.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@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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