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| author | Alan Cox <alan@lxorguk.ukuu.org.uk> | 2008-07-24 17:18:38 +0100 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2008-07-28 15:12:11 -0700 |
| commit | 979b1791e5b8f8b556faeec4c48339e7ed63af9f (patch) | |
| tree | 30990937096bb25aa8349dae7285e70f268a767a /drivers/pci/quirks.c | |
| parent | 362b7077a5546b42131af15ba4776f30c9a72d0c (diff) | |
| download | lwn-979b1791e5b8f8b556faeec4c48339e7ed63af9f.tar.gz lwn-979b1791e5b8f8b556faeec4c48339e7ed63af9f.zip | |
PCI: add D3 power state avoidance quirk
Libata has some hacks to deal with certain controllers going silly in D3
state. The right way to handle this is to keep a PCI device flag for
such devices. That can then be generalised for no ATA devices with power
problems.
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 12d489395fad..0fb365074288 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -923,6 +923,19 @@ static void __init quirk_ide_samemode(struct pci_dev *pdev) } DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_10, quirk_ide_samemode); +/* + * Some ATA devices break if put into D3 + */ + +static void __devinit quirk_no_ata_d3(struct pci_dev *pdev) +{ + /* Quirk the legacy ATA devices only. The AHCI ones are ok */ + if ((pdev->class >> 8) == PCI_CLASS_STORAGE_IDE) + pdev->dev_flags |= PCI_DEV_FLAGS_NO_D3; +} +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS, PCI_ANY_ID, quirk_no_ata_d3); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ATI, PCI_ANY_ID, quirk_no_ata_d3); + /* This was originally an Alpha specific thing, but it really fits here. * The i82375 PCI/EISA bridge appears as non-classified. Fix that. */ |