1 files changed, 31 insertions, 26 deletions

diff --git a/drivers/acpi/dispatcher/dswexec.c b/drivers/acpi/dispatcher/dswexec.c
index 2071a0d2bbb..10f71318e23 100644
--- a/drivers/acpi/dispatcher/dswexec.c
+++ b/drivers/acpi/dispatcher/dswexec.c
@@ -73,11 +73,13 @@ static ACPI_EXECUTE_OP      acpi_gbl_op_type_dispatch [] = {
                           acpi_ex_opcode_3A_1T_1R,
                           acpi_ex_opcode_6A_0T_1R};
 
+
 /*****************************************************************************
  *
  * FUNCTION:    acpi_ds_get_predicate_value
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
+ *              result_obj      - if non-zero, pop result from result stack
  *
  * RETURN:      Status
  *
@@ -124,7 +126,8 @@ acpi_ds_get_predicate_value (
         }
 
         if (!obj_desc) {
-                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "No predicate obj_desc=%p State=%p\n",
+                ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                        "No predicate obj_desc=%p State=%p\n",
                         obj_desc, walk_state));
 
                 return_ACPI_STATUS (AE_AML_NO_OPERAND);
@@ -197,7 +200,7 @@ cleanup:
  * FUNCTION:    acpi_ds_exec_begin_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              out_op          - Return op if a new one is created
+ *              out_op          - Where to return op if a new one is created
  *
  * RETURN:      Status
  *
@@ -233,7 +236,8 @@ acpi_ds_exec_begin_op (
                 walk_state->op_info = acpi_ps_get_opcode_info (op->common.aml_opcode);
 
                 if (acpi_ns_opens_scope (walk_state->op_info->object_type)) {
-                        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
+                        ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+                                "(%s) Popping scope for Op %p\n",
                                 acpi_ut_get_type_name (walk_state->op_info->object_type), op));
 
                         status = acpi_ds_scope_stack_pop (walk_state);
@@ -297,11 +301,10 @@ acpi_ds_exec_begin_op (
 
                 if (walk_state->walk_type == ACPI_WALK_METHOD) {
                         /*
-                         * Found a named object declaration during method
-                         * execution;  we must enter this object into the
-                         * namespace.  The created object is temporary and
-                         * will be deleted upon completion of the execution
-                         * of this method.
+                         * Found a named object declaration during method execution;
+                         * we must enter this object into the namespace.  The created
+                         * object is temporary and will be deleted upon completion of
+                         * the execution of this method.
                          */
                         status = acpi_ds_load2_begin_op (walk_state, NULL);
                 }
@@ -338,8 +341,6 @@ acpi_ds_exec_begin_op (
  * FUNCTION:    acpi_ds_exec_end_op
  *
  * PARAMETERS:  walk_state      - Current state of the parse tree walk
- *              Op              - Op that has been just been completed in the
- *                                walk;  Arguments have now been evaluated.
  *
  * RETURN:      Status
  *
@@ -389,7 +390,7 @@ acpi_ds_exec_end_op (
         /* Decode the Opcode Class */
 
         switch (op_class) {
-        case AML_CLASS_ARGUMENT:    /* constants, literals, etc. -- do nothing */
+        case AML_CLASS_ARGUMENT:    /* constants, literals, etc. - do nothing */
                 break;
 
 
@@ -417,12 +418,12 @@ acpi_ds_exec_end_op (
                         /* Resolve all operands */
 
                         status = acpi_ex_resolve_operands (walk_state->opcode,
-                                          &(walk_state->operands [walk_state->num_operands -1]),
-                                          walk_state);
+                                         &(walk_state->operands [walk_state->num_operands -1]),
+                                         walk_state);
                         if (ACPI_SUCCESS (status)) {
                                 ACPI_DUMP_OPERANDS (ACPI_WALK_OPERANDS, ACPI_IMODE_EXECUTE,
-                                                  acpi_ps_get_opcode_name (walk_state->opcode),
-                                                  walk_state->num_operands, "after ex_resolve_operands");
+                                        acpi_ps_get_opcode_name (walk_state->opcode),
+                                        walk_state->num_operands, "after ex_resolve_operands");
                         }
                 }
 
@@ -506,7 +507,8 @@ acpi_ds_exec_end_op (
                         if ((op->asl.parent) &&
                            ((op->asl.parent->asl.aml_opcode == AML_PACKAGE_OP) ||
                                 (op->asl.parent->asl.aml_opcode == AML_VAR_PACKAGE_OP))) {
-                                ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Method Reference in a Package, Op=%p\n", op));
+                                ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
+                                        "Method Reference in a Package, Op=%p\n", op));
                                 op->common.node = (struct acpi_namespace_node *) op->asl.value.arg->asl.node->object;
                                 acpi_ut_add_reference (op->asl.value.arg->asl.node->object);
                                 return_ACPI_STATUS (AE_OK);
@@ -583,13 +585,15 @@ acpi_ds_exec_end_op (
                         case AML_NAME_OP:
 
                                 /*
-                                 * Put the Node on the object stack (Contains the ACPI Name of
-                                 * this object)
+                                 * Put the Node on the object stack (Contains the ACPI Name
+                                 * of this object)
                                  */
                                 walk_state->operands[0] = (void *) op->common.parent->common.node;
                                 walk_state->num_operands = 1;
 
-                                status = acpi_ds_create_node (walk_state, op->common.parent->common.node, op->common.parent);
+                                status = acpi_ds_create_node (walk_state,
+                                                 op->common.parent->common.node,
+                                                 op->common.parent);
                                 if (ACPI_FAILURE (status)) {
                                         break;
                                 }
@@ -600,7 +604,7 @@ acpi_ds_exec_end_op (
                         case AML_INT_EVAL_SUBTREE_OP:
 
                                 status = acpi_ds_eval_data_object_operands (walk_state, op,
-                                                  acpi_ns_get_attached_object (op->common.parent->common.node));
+                                                 acpi_ns_get_attached_object (op->common.parent->common.node));
                                 break;
 
                         default:
@@ -609,7 +613,7 @@ acpi_ds_exec_end_op (
                                 break;
                         }
 
-                        /* Done with this result state (Now that operand stack is built) */
+                        /* Done with result state (Now that operand stack is built) */
 
                         status = acpi_ds_result_stack_pop (walk_state);
                         if (ACPI_FAILURE (status)) {
@@ -620,8 +624,7 @@ acpi_ds_exec_end_op (
                          * If a result object was returned from above, push it on the
                          * current result stack
                          */
-                        if (ACPI_SUCCESS (status) &&
-                                walk_state->result_obj) {
+                        if (walk_state->result_obj) {
                                 status = acpi_ds_result_push (walk_state->result_obj, walk_state);
                         }
                         break;
@@ -654,7 +657,8 @@ acpi_ds_exec_end_op (
 
                 case AML_TYPE_UNDEFINED:
 
-                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Undefined opcode type Op=%p\n", op));
+                        ACPI_DEBUG_PRINT ((ACPI_DB_ERROR,
+                                "Undefined opcode type Op=%p\n", op));
                         return_ACPI_STATUS (AE_NOT_IMPLEMENTED);
 
 
@@ -709,13 +713,14 @@ cleanup:
                 status = acpi_gbl_exception_handler (status,
                                  walk_state->method_node->name.integer, walk_state->opcode,
                                  walk_state->aml_offset, NULL);
-                acpi_ex_enter_interpreter ();
+                (void) acpi_ex_enter_interpreter ();
         }
 
         if (walk_state->result_obj) {
                 /* Break to debugger to display result */
 
-                ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (walk_state->result_obj, walk_state));
+                ACPI_DEBUGGER_EXEC (acpi_db_display_result_object (walk_state->result_obj,
+                                 walk_state));
 
                 /*
                  * Delete the result op if and only if: