[RFC PATCH 1/2] ata_piix: revert quirks for fixing SNB chips

[ming.lei at canonical.com]

From: Ming Lei <ming.lei at canonical.com>

Revert the commit 44e8c44804843af82e614921173bc0e01c3ea2e0 in
ubuntu-oneiric.git.

	UBUNTU: SAUCE: ata: make DVD drive recognisable on systems with Sandybridge CPT chipset

because we have a better solution which can fix more cases than the old one.

BugLink:
        https://bugs.launchpad.net/bugs/737388
        https://bugs.launchpad.net/bugs/794642
        https://bugs.launchpad.net/bugs/782389

Upstream: [1],[2],[3]

[1], https://bugzilla.kernel.org/show_bug.cgi?id=40592
[2], http://marc.info/?t=131665670300001&r=1&w=2
[3], http://marc.info/?t=131743346400002&r=1&w=2

Signed-off-by: Ming Lei <ming.lei at canonical.com>
---
 drivers/ata/ata_piix.c |   12 +-----------
 1 files changed, 1 insertions(+), 11 deletions(-)

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index eb7ea56..43107e9 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -341,12 +341,11 @@ static struct ata_port_operations piix_sata_ops = {
 };
 
 static struct ata_port_operations piix_pata_ops = {
-	.inherits		= &ata_bmdma32_port_ops,
+	.inherits		= &piix_sata_ops,
 	.cable_detect		= ata_cable_40wire,
 	.set_piomode		= piix_set_piomode,
 	.set_dmamode		= piix_set_dmamode,
 	.prereset		= piix_pata_prereset,
-	.sff_irq_check		= piix_irq_check,
 };
 
 static struct ata_port_operations piix_vmw_ops = {
@@ -1586,15 +1585,6 @@ static int __devinit piix_init_one(struct pci_dev *pdev,
 				"on poweroff and hibernation\n");
 	}
 
-	/*
-	 * Sandybridge chipset H61/P67/H67 have broken 32 mode up to now
-	 * see https://bugzilla.kernel.org/show_bug.cgi?id=40592
-	 */
-	if (pdev->vendor == PCI_VENDOR_ID_INTEL && pdev->device == 0x1c00)
-		piix_sata_ops.inherits = &ata_bmdma_port_ops;
-	else
-		piix_sata_ops.inherits = &ata_bmdma32_port_ops;
-
 	port_info[0] = piix_port_info[ent->driver_data];
 	port_info[1] = piix_port_info[ent->driver_data];
 
-- 
1.7.5.4