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PCI: add D3 power state avoidance quirk

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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>
This commit is contained in:
Alan Cox
2008-07-24 17:18:38 +01:00
committed by Jesse Barnes
parent 362b7077a5
commit 979b1791e5
3 changed files with 19 additions and 0 deletions
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13
drivers/pci/quirks.c
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@@ -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.
*/