intel-iommu: Make "Unknown DMAR structure" message more informative

We might as well print the type of the DMAR structure we don't know how
to handle when skipping it.  Then someone getting this message has a
chance of telling whether the structure is just bogus, or if there
really is something valid that the kernel doesn't know how to handle.

Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

diff --git a/drivers/pci/dmar.c b/drivers/pci/dmar.c
index 14bbaa17e2ca8ec8729eda3702c6883865558406..d199bcabed7594c114b38a238b514fbbfd3c3449 100644 (file)
--- a/drivers/pci/dmar.c
+++ b/drivers/pci/dmar.c
@@ -461,7 +461,8 @@ parse_dmar_table(void)
                        break;
                default:
                        printk(KERN_WARNING PREFIX
-                               "Unknown DMAR structure type\n");
+                               "Unknown DMAR structure type %d\n",
+                               entry_header->type);
                        ret = 0; /* for forward compatibility */
                        break;
                }