From: Alan Cox <alan@lxorguk.ukuu.org.uk>

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: Andrew Morton <akpm@linux-foundation.org>
---

 drivers/ata/pata_via.c |    3 +++
 1 file changed, 3 insertions(+)

diff -puN drivers/ata/pata_via.c~libata-acpi-checks-for-80wire-cable-use-in-pata_via drivers/ata/pata_via.c
--- a/drivers/ata/pata_via.c~libata-acpi-checks-for-80wire-cable-use-in-pata_via
+++ a/drivers/ata/pata_via.c
@@ -180,6 +180,9 @@ static int via_cable_detect(struct ata_p
 	   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;
 }
 
_