Commit e708eb9b authored by Alan Cox's avatar Alan Cox Committed by Jeff Garzik
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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: default avatarAlan Cox <alan@redhat.com>
Signed-off-by: default avatarJeff Garzik <jeff@garzik.org>
parent e1ddb4b6

drivers/ata/pata_amd.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

}