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authorMichael Ellerman <michael@ellerman.id.au>2009-05-21 19:10:23 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-05-22 16:01:11 +1000
commit6eb0ac03899a1363ba176abe0830a9e6698c0503 (patch)
tree11d36f24f5fba90d051b7be3439d85e41e731044
parent5805977e63a36ad56594a623f3bd2bebcb7db233 (diff)
downloadlinux-stericsson-6eb0ac03899a1363ba176abe0830a9e6698c0503.tar.gz
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>
-rw-r--r--arch/powerpc/platforms/maple/pci.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/powerpc/platforms/maple/pci.c b/arch/powerpc/platforms/maple/pci.c
index 301855263b81..04296ffff8bf 100644
--- a/arch/powerpc/platforms/maple/pci.c
+++ b/arch/powerpc/platforms/maple/pci.c
@@ -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);