diff options
| author | David S. Miller <davem@davemloft.net> | 2010-03-01 06:23:06 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-03-01 06:23:06 +0300 |
| commit | 47871889c601d8199c51a4086f77eebd77c29b0b (patch) | |
| tree | 40cdcac3bff0ee40cc33dcca61d0577cdf965f77 /drivers/ata/ahci.c | |
| parent | c16cc0b464b8876cfd57ce1c1dbcb6f9a6a0bce3 (diff) | |
| parent | 30ff056c42c665b9ea535d8515890857ae382540 (diff) | |
| download | linux-47871889c601d8199c51a4086f77eebd77c29b0b.tar.xz | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Conflicts:
drivers/firmware/iscsi_ibft.c
Diffstat (limited to 'drivers/ata/ahci.c')
| -rw-r--r-- | drivers/ata/ahci.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c index b34390347c16..a6a736a7dbf2 100644 --- a/drivers/ata/ahci.c +++ b/drivers/ata/ahci.c @@ -3082,8 +3082,16 @@ static int ahci_init_one(struct pci_dev *pdev, const struct pci_device_id *ent) ahci_save_initial_config(pdev, hpriv); /* prepare host */ - if (hpriv->cap & HOST_CAP_NCQ) - pi.flags |= ATA_FLAG_NCQ | ATA_FLAG_FPDMA_AA; + if (hpriv->cap & HOST_CAP_NCQ) { + pi.flags |= ATA_FLAG_NCQ; + /* Auto-activate optimization is supposed to be supported on + all AHCI controllers indicating NCQ support, but it seems + to be broken at least on some NVIDIA MCP79 chipsets. + Until we get info on which NVIDIA chipsets don't have this + issue, if any, disable AA on all NVIDIA AHCIs. */ + if (pdev->vendor != PCI_VENDOR_ID_NVIDIA) + pi.flags |= ATA_FLAG_FPDMA_AA; + } if (hpriv->cap & HOST_CAP_PMP) pi.flags |= ATA_FLAG_PMP; |