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>
diff --git a/drivers/ata/pata_via.c b/drivers/ata/pata_via.c
index 4ddcae8..f11b87e 100644
--- a/drivers/ata/pata_via.c
+++ b/drivers/ata/pata_via.c
@@ -184,6 +184,9 @@
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;
}