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libata pata_amd: ACPI checks for 80wire cable 

We can make use of this on the pata_amd driver as many Nvidia devices
don't have reliable cable detect.

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 18:37:28 +01:00 committed by Jeff Garzik
parent e1ddb4b6a2
commit e708eb9bc0
1 changed files with 3 additions and 0 deletions
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3
drivers/ata/pata_amd.c
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@ -270,6 +270,9 @@ static int nv_cable_detect(struct ata_port *ap)
pci_read_config_word(pdev, 0x62 - 2 * ap->port_no, &udma);
if ((udma & 0xC4) == 0xC4 || (udma & 0xC400) == 0xC400)
cbl = ATA_CBL_PATA80;
/* And a triple check across suspend/resume with ACPI around */
if (ata_acpi_cbl_80wire(ap))
cbl = ATA_CBL_PATA80;
return cbl;
}