ahci,ata_generic: let ata_generic handle new MBP w/ MCP89

commit c6353b4520788e34098bbf61c73fb9618ca7fdd6 upstream.

For yet unknown reason, MCP89 on MBP 7,1 doesn't work w/ ahci under
linux but the controller doesn't require explicit mode setting and
works fine with ata_generic.  Make ahci ignore the controller on MBP
7,1 and let ata_generic take it for now.

Reported in bko#15923.

  https://bugzilla.kernel.org/show_bug.cgi?id=15923

NVIDIA is investigating why ahci mode doesn't work.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Peer Chen <pchen@nvidia.com>
Reported-by: Anders Østhus <grapz666@gmail.com>
Reported-by: Andreas Graf <andreas_graf@csgraf.de>
Reported-by: Benoit Gschwind <gschwind@gnu-log.net>
Reported-by: Damien Cassou <damien.cassou@gmail.com>
Reported-by: tixetsal@juno.com
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 462200d93d716b8b7fdda5dd254c6e00cff5b34b..9c6747c2c0af3981bfa99bc66addf53a0a4981e9 100644 (file)
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -3037,6 +3037,16 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
        if (pdev->vendor == PCI_VENDOR_ID_MARVELL && !marvell_enable)
                return -ENODEV;
 
+       /*
+        * For some reason, MCP89 on MacBook 7,1 doesn't work with
+        * ahci, use ata_generic instead.
+        */
+       if (pdev->vendor == PCI_VENDOR_ID_NVIDIA &&
+           pdev->device == PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA &&
+           pdev->subsystem_vendor == PCI_VENDOR_ID_APPLE &&
+           pdev->subsystem_device == 0xcb89)
+               return -ENODEV;
+
        /* Promise's PDC42819 is a SAS/SATA controller that has an AHCI mode.
         * At the moment, we can only use the AHCI mode. Let the users know
         * that for SAS drives they're out of luck.

diff --git a/drivers/ata/ata_generic.c b/drivers/ata/ata_generic.c
index 12e26c3c68e3f1d97d426bef8cd5372baf277c09..151eb43b67b47283d47b0b1166d5d3ccf899a390 100644 (file)
--- a/drivers/ata/ata_generic.c
+++ b/drivers/ata/ata_generic.c
@@ -168,6 +168,12 @@ static struct pci_device_id ata_generic[] = {
        { PCI_DEVICE(PCI_VENDOR_ID_VIA,    PCI_DEVICE_ID_VIA_82C561), },
        { PCI_DEVICE(PCI_VENDOR_ID_OPTI,   PCI_DEVICE_ID_OPTI_82C558), },
        { PCI_DEVICE(PCI_VENDOR_ID_CENATEK,PCI_DEVICE_ID_CENATEK_IDE), },
+       /*
+        * For some reason, MCP89 on MacBook 7,1 doesn't work with
+        * ahci, use ata_generic instead.
+        */
+       { PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA,
+         PCI_VENDOR_ID_APPLE, 0xcb89, },
 #if !defined(CONFIG_PATA_TOSHIBA) && !defined(CONFIG_PATA_TOSHIBA_MODULE)
        { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_1), },
        { PCI_DEVICE(PCI_VENDOR_ID_TOSHIBA,PCI_DEVICE_ID_TOSHIBA_PICCOLO_2),  },

diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index be29806f278f7de599227e87e5d5b2398f5eb159..f0bcfbc31493070b1de603bb68f3d30cd78f672d 100644 (file)
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -1262,6 +1262,7 @@
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP77_IDE       0x0759
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP73_SMBUS     0x07D8
 #define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP79_SMBUS     0x0AA2
+#define PCI_DEVICE_ID_NVIDIA_NFORCE_MCP89_SATA     0x0D85
 
 #define PCI_VENDOR_ID_IMS              0x10e0
 #define PCI_DEVICE_ID_IMS_TT128                0x9128