Patch "ata_piix: Fix DVD not dectected at some Haswell platforms" has been added to the 3.4-stable tree

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This is a note to let you know that I've just added the patch titled

    ata_piix: Fix DVD not dectected at some Haswell platforms

to the 3.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     ata_piix-fix-dvd-not-dectected-at-some-haswell-platforms.patch
and it can be found in the queue-3.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From b55f84e2d527182e7c611d466cd0bb6ddce201de Mon Sep 17 00:00:00 2001
From: Youquan Song <youquan.song@xxxxxxxxx>
Date: Wed, 6 Mar 2013 10:49:05 -0500
Subject: ata_piix: Fix DVD not dectected at some Haswell platforms

From: Youquan Song <youquan.song@xxxxxxxxx>

commit b55f84e2d527182e7c611d466cd0bb6ddce201de upstream.

There is a quirk patch 5e5a4f5d5a08c9c504fe956391ac3dae2c66556d
"ata_piix: make DVD Drive recognisable on systems with Intel Sandybridge
 chipsets(v2)" fixing the 4 ports IDE controller 32bit PIO mode.

We've hit a problem with DVD not recognized on Haswell Desktop platform which
includes Lynx Point 2-port SATA controller.

This quirk patch disables 32bit PIO on this controller in IDE mode.

v2: Change spelling error in statememnt pointed by Sergei Shtylyov.
v3: Change comment statememnt and spliting line over 80 characters pointed by
    Libor Pechacek and also rebase the patch against 3.8-rc7 kernel.

Tested-by: Lee, Chun-Yi <jlee@xxxxxxxx>
Signed-off-by: Youquan Song <youquan.song@xxxxxxxxx>
Signed-off-by: Jeff Garzik <jgarzik@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/ata/ata_piix.c |   13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -150,6 +150,7 @@ enum piix_controller_ids {
 	tolapai_sata,
 	piix_pata_vmw,			/* PIIX4 for VMware, spurious DMA_ERR */
 	ich8_sata_snb,
+	ich8_2port_sata_snb,
 };
 
 struct piix_map_db {
@@ -326,7 +327,7 @@ static const struct pci_device_id piix_p
 	/* SATA Controller IDE (Lynx Point) */
 	{ 0x8086, 0x8c01, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_sata_snb },
 	/* SATA Controller IDE (Lynx Point) */
-	{ 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
+	{ 0x8086, 0x8c08, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata_snb },
 	/* SATA Controller IDE (Lynx Point) */
 	{ 0x8086, 0x8c09, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich8_2port_sata },
 	/* SATA Controller IDE (DH89xxCC) */
@@ -511,6 +512,7 @@ static const struct piix_map_db *piix_ma
 	[ich8m_apple_sata]	= &ich8m_apple_map_db,
 	[tolapai_sata]		= &tolapai_map_db,
 	[ich8_sata_snb]		= &ich8_map_db,
+	[ich8_2port_sata_snb]	= &ich8_2port_map_db,
 };
 
 static struct ata_port_info piix_port_info[] = {
@@ -652,6 +654,15 @@ static struct ata_port_info piix_port_in
 		.port_ops	= &piix_sata_ops,
 	},
 
+	[ich8_2port_sata_snb] =
+	{
+		.flags		= PIIX_SATA_FLAGS | PIIX_FLAG_SIDPR
+					| PIIX_FLAG_PIO16,
+		.pio_mask	= ATA_PIO4,
+		.mwdma_mask	= ATA_MWDMA2,
+		.udma_mask	= ATA_UDMA6,
+		.port_ops	= &piix_sata_ops,
+	},
 };
 
 static struct pci_bits piix_enable_bits[] = {


Patches currently in stable-queue which might be from youquan.song@xxxxxxxxx are

queue-3.4/ata_piix-fix-dvd-not-dectected-at-some-haswell-platforms.patch
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