path: root/drivers/ata/ahci.c
diff options
authorTejun Heo <tj@kernel.org>2010-06-17 11:42:22 +0200
committerJeff Garzik <jgarzik@redhat.com>2010-07-01 15:34:46 -0400
commitc6353b4520788e34098bbf61c73fb9618ca7fdd6 (patch)
tree89146e7b8e282b907021bae657b4bf18c74d9858 /drivers/ata/ahci.c
parentlibahci: Fix bug in storing EM messages (diff)
ahci,ata_generic: let ata_generic handle new MBP w/ MCP89
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> Cc: stable@kernel.org Reported-by: Anders Ă˜sthus <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>
Diffstat (limited to 'drivers/ata/ahci.c')
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 8ca16f54e1ed..f2522534ae63 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1053,6 +1053,16 @@ 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->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.