tree bb8c0246ded5a1d99320055343c7d277208fadd8
parent a0f79b929acaba10d4780acd2543eff20bf4b5b0
author Tejun Heo <htejun@gmail.com> 1197963186 +0900
committer Jeff Garzik <jeff@garzik.org> 1201083852 -0500

libata: reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask()

Reimplement ata_acpi_cbl_80wire() using ata_acpi_gtm_xfermask() and
while at it relocate the function below ata_acpi_gtm_xfermask().

New ata_acpi_cbl_80wire() implementation takes @gtm, in both pata_via
and pata_amd, use the initial GTM value.  Both are trying to peek
initial BIOS configuration, so using initial caching value makes
sense.  This fixes ACPI part of cable detection in pata_amd which
previously always returned 0 because configuring PIO0 during reset
clears DMA configuration.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Jeff Garzik <jeff@garzik.org>