diff options
Diffstat (limited to 'drivers/acpi/parser/psloop.c')
| -rw-r--r-- | drivers/acpi/parser/psloop.c | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/drivers/acpi/parser/psloop.c b/drivers/acpi/parser/psloop.c index 00b072e15d1..e1541db3753 100644 --- a/drivers/acpi/parser/psloop.c +++ b/drivers/acpi/parser/psloop.c @@ -83,7 +83,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) struct acpi_parse_state *parser_state; u8 *aml_op_start = NULL; - ACPI_FUNCTION_TRACE_PTR("ps_parse_loop", walk_state); + ACPI_FUNCTION_TRACE_PTR(ps_parse_loop, walk_state); if (walk_state->descending_callback == NULL) { return_ACPI_STATUS(AE_BAD_PARAMETER); @@ -95,6 +95,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) #if (!defined (ACPI_NO_METHOD_EXECUTION) && !defined (ACPI_CONSTANT_EVAL_ONLY)) if (walk_state->walk_type & ACPI_WALK_METHOD_RESTART) { + /* We are restarting a preempted control method */ if (acpi_ps_has_completed_scope(parser_state)) { @@ -128,7 +129,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) } ACPI_EXCEPTION((AE_INFO, status, - "get_predicate Failed")); + "GetPredicate Failed")); return_ACPI_STATUS(status); } @@ -143,6 +144,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) ACPI_DEBUG_PRINT((ACPI_DB_PARSE, "Popped scope, Op=%p\n", op)); } else if (walk_state->prev_op) { + /* We were in the middle of an op */ op = walk_state->prev_op; @@ -156,6 +158,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) while ((parser_state->aml < parser_state->aml_end) || (op)) { aml_op_start = parser_state->aml; if (!op) { + /* Get the next opcode from the AML stream */ walk_state->aml_offset = @@ -213,6 +216,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) /* Create Op structure and append to parent's argument list */ if (walk_state->op_info->flags & AML_NAMED) { + /* Allocate a new pre_op if necessary */ if (!pre_op) { @@ -371,7 +375,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) if (walk_state->op_info) { ACPI_DEBUG_PRINT((ACPI_DB_PARSE, - "Opcode %4.4X [%s] Op %p Aml %p aml_offset %5.5X\n", + "Opcode %4.4X [%s] Op %p Aml %p AmlOffset %5.5X\n", (u32) op->common.aml_opcode, walk_state->op_info->name, op, parser_state->aml, @@ -388,6 +392,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) /* Are there any arguments that must be processed? */ if (walk_state->arg_types) { + /* Get arguments */ switch (op->common.aml_opcode) { @@ -742,7 +747,19 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) if (ACPI_FAILURE(status2)) { return_ACPI_STATUS(status2); } + + status2 = + acpi_ds_result_stack_pop + (walk_state); + if (ACPI_FAILURE(status2)) { + return_ACPI_STATUS(status2); + } + + acpi_ut_delete_generic_state + (acpi_ut_pop_generic_state + (&walk_state->control_state)); } + acpi_ps_pop_scope(parser_state, &op, &walk_state->arg_types, &walk_state->arg_count); @@ -762,6 +779,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) return_ACPI_STATUS(status2); } } + acpi_ps_pop_scope(parser_state, &op, &walk_state->arg_types, &walk_state->arg_count); @@ -853,6 +871,7 @@ acpi_status acpi_ps_parse_loop(struct acpi_walk_state *walk_state) } else if (ACPI_FAILURE(status)) { + /* First error is most important */ (void) |