Merge branches 'dma-debug/fixes' and 'amd-iommu/fixes' into iommu/fixes

arch/x86/kernel/amd_iommu_init.c

@@ -137,6 +137,11 @@ int amd_iommus_present;
 /* IOMMUs have a non-present cache? */
 bool amd_iommu_np_cache __read_mostly;
 
+/*
+ * Set to true if ACPI table parsing and hardware intialization went properly
+ */
+static bool amd_iommu_initialized;
+
 /*
  * List of protection domains - used during resume
  */
@@ -929,6 +934,8 @@ static int __init init_iommu_all(struct acpi_table_header *table)
 	}
 	WARN_ON(p != end);
 
+	amd_iommu_initialized = true;
+
 	return 0;
 }
 
@@ -1263,6 +1270,9 @@ static int __init amd_iommu_init(void)
 	if (acpi_table_parse("IVRS", init_iommu_all) != 0)
 		goto free;
 
+	if (!amd_iommu_initialized)
+		goto free;
+
 	if (acpi_table_parse("IVRS", init_memory_definitions) != 0)
 		goto free;