From: Jeff Garzik <jgarzik@pobox.com>
Date: Sat, 28 Jan 2006 17:26:23 +0000 (-0500)
Subject: [libata ata_piix] Fix ICH6/7 map value interpretation
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b376bc1f6b4258112d714fb4ee8e5d57b53625f2;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git

[libata ata_piix] Fix ICH6/7 map value interpretation

The previous change failed to properly mask out unrelated bits, which
resulted in a failure to detect devices.
---

diff --git a/drivers/scsi/ata_piix.c b/drivers/scsi/ata_piix.c
index 19d8d4ba6a1..2d984b090b2 100644
--- a/drivers/scsi/ata_piix.c
+++ b/drivers/scsi/ata_piix.c
@@ -713,7 +713,7 @@ static int piix_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 		pci_read_config_byte(pdev, ICH5_PMR, &tmp);
 
 		if (host_flags & PIIX_FLAG_COMBINED_ICH6) {
-			switch (tmp) {
+			switch (tmp & 0x3) {
 			case 0:
 				break;
 			case 1: