1 files changed, 7 insertions, 34 deletions

diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 5719704eb0ee..720174d628fa 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -126,8 +126,7 @@ enum {
         ich6_sata               = 7,
         ich6_sata_ahci          = 8,
         ich6m_sata_ahci         = 9,
-        ich7m_sata_ahci         = 10,
-        ich8_sata_ahci          = 11,
+        ich8_sata_ahci          = 10,
 
         /* constants for mapping table */
         P0                      = 0,  /* port 0 */
@@ -227,7 +226,7 @@ static const struct pci_device_id piix_pci_tbl[] = {
         /* 82801GB/GR/GH (ICH7, identical to ICH6) */
         { 0x8086, 0x27c0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
         /* 2801GBM/GHM (ICH7M, identical to ICH6M) */
-        { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich7m_sata_ahci },
+        { 0x8086, 0x27c4, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6m_sata_ahci },
         /* Enterprise Southbridge 2 (where's the datasheet?) */
         { 0x8086, 0x2680, PCI_ANY_ID, PCI_ANY_ID, 0, 0, ich6_sata_ahci },
         /* SATA Controller 1 IDE (ICH8, no datasheet yet) */
@@ -399,23 +398,10 @@ static const struct piix_map_db ich6m_map_db = {
         .mask = 0x3,
         .port_enable = 0x5,
         .present_shift = 4,
-        .map = {
-                /* PM   PS   SM   SS       MAP */
-                {  P0,  P2,  RV,  RV }, /* 00b */
-                {  RV,  RV,  RV,  RV },
-                {  P0,  P2, IDE, IDE }, /* 10b */
-                {  RV,  RV,  RV,  RV },
-        },
-};
-
-static const struct piix_map_db ich7m_map_db = {
-        .mask = 0x3,
-        .port_enable = 0x5,
-        .present_shift = 4,
 
         /* Map 01b isn't specified in the doc but some notebooks use
-         * it anyway.  ATM, the only case spotted carries subsystem ID
-         * 1025:0107.  This is the only difference from ich6m.
+         * it anyway.  MAP 01b have been spotted on both ICH6M and
+         * ICH7M.
          */
         .map = {
                 /* PM   PS   SM   SS       MAP */
@@ -432,9 +418,9 @@ static const struct piix_map_db ich8_map_db = {
         .present_shift = 8,
         .map = {
                 /* PM   PS   SM   SS       MAP */
-                {  P0,  NA,  P1,  NA }, /* 00b (hardwired) */
+                {  P0,  P2,  P1,  P3 }, /* 00b (hardwired when in AHCI) */
                 {  RV,  RV,  RV,  RV },
-                {  RV,  RV,  RV,  RV }, /* 10b (never) */
+                {  IDE,  IDE,  NA,  NA }, /* 10b (IDE mode) */
                 {  RV,  RV,  RV,  RV },
         },
 };
@@ -445,7 +431,6 @@ static const struct piix_map_db *piix_map_db_table[] = {
         [ich6_sata]             = &ich6_map_db,
         [ich6_sata_ahci]        = &ich6_map_db,
         [ich6m_sata_ahci]       = &ich6m_map_db,
-        [ich7m_sata_ahci]       = &ich7m_map_db,
         [ich8_sata_ahci]        = &ich8_map_db,
 };
 
@@ -556,19 +541,7 @@ static struct ata_port_info piix_port_info[] = {
                 .port_ops       = &piix_sata_ops,
         },
 
-        /* ich7m_sata_ahci: 10 */
-        {
-                .sht            = &piix_sht,
-                .flags          = ATA_FLAG_SATA |
-                                  PIIX_FLAG_CHECKINTR | PIIX_FLAG_SCR |
-                                  PIIX_FLAG_AHCI,
-                .pio_mask       = 0x1f, /* pio0-4 */
-                .mwdma_mask     = 0x07, /* mwdma0-2 */
-                .udma_mask      = 0x7f, /* udma0-6 */
-                .port_ops       = &piix_sata_ops,
-        },
-
-        /* ich8_sata_ahci: 11 */
+        /* ich8_sata_ahci: 10 */
         {
                 .sht            = &piix_sht,
                 .flags          = ATA_FLAG_SATA |