1 files changed, 19 insertions, 0 deletions

diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c
index a079975f671f..a7c768860648 100644
--- a/drivers/acpi/parser/psloop.c
+++ b/drivers/acpi/parser/psloop.c
@@ -325,6 +325,15 @@ acpi_ps_create_op(struct acpi_walk_state *walk_state,
                 op->named.length = 0;
         }
 
+        if (walk_state->opcode == AML_BANK_FIELD_OP) {
+                /*
+                 * Backup to beginning of bank_field declaration
+                 * body_length is unknown until we parse the body
+                 */
+                op->named.data = aml_op_start;
+                op->named.length = 0;
+        }
+
         parent_scope = acpi_ps_get_parent_scope(&(walk_state->parser_state));
         acpi_ps_append_arg(parent_scope, op);
 
@@ -1040,6 +1049,16 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state)
                             (u32) (parser_state->aml - op->named.data);
                 }
 
+                if (op->common.aml_opcode == AML_BANK_FIELD_OP) {
+                        /*
+                         * Backup to beginning of bank_field declaration
+                         *
+                         * body_length is unknown until we parse the body
+                         */
+                        op->named.length =
+                            (u32) (parser_state->aml - op->named.data);
+                }
+
                 /* This op complete, notify the dispatcher */
 
                 if (walk_state->ascending_callback != NULL) {