Merge branch 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc

* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
  powerpc/maple: Add a quirk to disable MSI for IPR on Bimini

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);