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libata pata_via: ACPI checks for 80wire cable 

Testing this on the VIA boards fixes several problems with otherwise
undetectable SATA bridge chips

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Alan Cox 2007-07-26 18:38:06 +01:00 committed by Jeff Garzik
parent e708eb9bc0
commit 7d73a363de
1 changed files with 3 additions and 0 deletions
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3
drivers/ata/pata_via.c
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@ -184,6 +184,9 @@ static int via_cable_detect(struct ata_port *ap) {
two drives */
if (ata66 & (0x10100000 >> (16 * ap->port_no)))
return ATA_CBL_PATA80;
/* Check with ACPI so we can spot BIOS reported SATA bridges */
if (ata_acpi_cbl_80wire(ap))
return ATA_CBL_PATA80;
return ATA_CBL_PATA40;
}