Commit b55f84e2 authored by Youquan Song's avatar Youquan Song Committed by Jeff Garzik
Browse files

ata_piix: Fix DVD not dectected at some Haswell platforms 



There is a quirk patch 5e5a4f5d
"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: default avatarLee, Chun-Yi <jlee@suse.com>
Signed-off-by: default avatarYouquan Song <youquan.song@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarJeff Garzik <jgarzik@redhat.com>
parent a32450e1

drivers/ata/ata_piix.c

+13 −1
Original line number Diff line number Diff line
@@ -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 {
@@ -304,7 +305,7 @@ static const struct pci_device_id piix_pci_tbl[] = { 
	/* 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 (Lynx Point-LP) */
@@ -439,6 +440,7 @@ static const struct piix_map_db *piix_map_db_table[] = { 
	[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 pci_bits piix_enable_bits[] = {
@@ -1242,6 +1244,16 @@ static struct ata_port_info piix_port_info[] = { 
		.udma_mask	= ATA_UDMA6,

		.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,

	},

};



#define AHCI_PCI_BAR 5

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