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powerpc/maple: Add a quirk to disable MSI for IPR on Bimini 

Something in the HW or FW setup is busted and MSIs aren't working with
IPR on Bimini, so until we figure out exaxtly what's up, we quirk them
out

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Ellerman 2009-05-21 19:10:23 +00:00 committed by Benjamin Herrenschmidt
parent 5805977e63
commit 6eb0ac0389
1 changed files with 14 additions and 0 deletions
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14
arch/powerpc/platforms/maple/pci.c
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@ -592,3 +592,17 @@ int maple_pci_get_legacy_ide_irq(struct pci_dev *pdev, int channel)
}
return irq;
}
static void __devinit quirk_ipr_msi(struct pci_dev *dev)
{
/* Something prevents MSIs from the IPR from working on Bimini,
* and the driver has no smarts to recover. So disable MSI
* on it for now. */
if (machine_is(maple)) {
dev->no_msi = 1;
dev_info(&dev->dev, "Quirk disabled MSI\n");
}
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_OBSIDIAN,
quirk_ipr_msi);