FreeBSD 8.3 Backport of J1900 ACPI Patch see https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=187966

acpi_j1900.diff

diff --git a/sys/amd64/acpica/madt.c b/sys/amd64/acpica/madt.c
index 90ffd64..dcb7c30 100644
--- a/sys/amd64/acpica/madt.c
+++ b/sys/amd64/acpica/madt.c
@@ -306,7 +306,9 @@ interrupt_polarity(UINT16 IntiFlags, UINT8 Source)
 	case ACPI_MADT_POLARITY_ACTIVE_LOW:
 		return (INTR_POLARITY_LOW);
 	default:
-		panic("Bogus Interrupt Polarity");
+		 printf("Bogus Interrupt Polarity %x, set to low\n",
+                 IntiFlags & ACPI_MADT_POLARITY_MASK);
+             return (INTR_POLARITY_LOW);
 	}
 }

@@ -325,7 +327,9 @@ interrupt_trigger(UINT16 IntiFlags, UINT8 Source)
 	case ACPI_MADT_TRIGGER_LEVEL:
 		return (INTR_TRIGGER_LEVEL);
 	default:
-		panic("Bogus Interrupt Trigger Mode");
+		printf("Bogus Interrupt Trigger Mode %x, set to level\n",
+                   IntiFlags & ACPI_MADT_TRIGGER_MASK);
+              return (INTR_TRIGGER_LEVEL);
 	}
 }