diff --git a/drivers/acpi/resources/rscreate.c b/drivers/acpi/resources/rscreate.c
index faddaee1bc07529c38e5ce075a88e53077d6ab72..70c84ece87f1d96f6eff6a4719383130fc8e77ba 100644
--- a/drivers/acpi/resources/rscreate.c
+++ b/drivers/acpi/resources/rscreate.c
@@ -284,6 +284,23 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
 			}
 		}
 
+		/*
+		 * If the BIOS has erroneously reversed the _PRT source_name (index 2)
+		 * and the source_index (index 3), fix it. _PRT is important enough to
+		 * workaround this BIOS error. This also provides compatibility with
+		 * other ACPI implementations.
+		 */
+		obj_desc = sub_object_list[3];
+		if (!obj_desc
+		    || (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_INTEGER)) {
+			sub_object_list[3] = sub_object_list[2];
+			sub_object_list[2] = obj_desc;
+
+			ACPI_WARNING((AE_INFO,
+				      "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed",
+				      index));
+		}
+
 		/*
 		 * 3) Third subobject: Dereference the PRT.source_name
 		 * The name may be unresolved (slack mode), so allow a null object