Re: bug report: multi-byte access in indexfields broken [patch]

@@ -346,6 +346,7 @@
 {
 	acpi_status                     status;
 	acpi_integer                    local_value;
+	acpi_integer                    index_field_value;
 
 
 	ACPI_FUNCTION_TRACE_U32 ("ex_field_datum_io", field_datum_byte_offset);

@@ -448,18 +449,22 @@
 
 	case ACPI_TYPE_LOCAL_INDEX_FIELD:
 
+		/* Compute index value to access the current datum */
+
+		index_field_value = (acpi_integer) obj_desc->index_field.value
+			+ field_datum_byte_offset;
 
 		/* Ensure that the index_value is not beyond the capacity of the register */
 
 		if (acpi_ex_register_overflow (obj_desc->index_field.index_obj,
-				  (acpi_integer) obj_desc->index_field.value)) {
+					       index_field_value)) {
 			return_ACPI_STATUS (AE_AML_REGISTER_LIMIT);
 		}
 
 		/* Write the index value to the index_register (itself a region_field) */
 
 		status = acpi_ex_insert_into_field (obj_desc->index_field.index_obj,
-				 &obj_desc->index_field.value,
+				 &index_field_value,
 				 sizeof (obj_desc->index_field.value));
 		if (ACPI_FAILURE (status)) {
 			return_ACPI_STATUS (status);


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