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dmar: print a useful message when quirking iommu off

This commit is contained in:
Kyle McMartin 2010-10-18 22:44:09 -04:00
parent e40a76c139
commit 4663ea7ac2
1 changed files with 3 additions and 1 deletions
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4
dmar-disable-when-ricoh-multifunction.patch
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@ -11,13 +11,15 @@ diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index 8e499e8..076c5de 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -3755,6 +3755,16 @@ static void __devinit quirk_iommu_rwbf(struct pci_dev *dev)
@@ -3755,6 +3755,18 @@ static void __devinit quirk_iommu_rwbf(struct pci_dev *dev)
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x2a40, quirk_iommu_rwbf);
+/* https://bugzilla.redhat.com/show_bug.cgi?id=605888 */
+static void __devinit quirk_ricoh_multifunction(struct pci_dev *dev)
+{
+ printk(KERN_INFO "intel_iommu: broken Ricoh device %04X detected, disabling...\n",
+ dev->device);
+ dmar_disabled = 1;
+}
+DECLARE_PCI_FIXUP_HEADER(0x1180, 0xe822, quirk_ricoh_multifunction);