diff options
Diffstat (limited to 'drivers/acpi/executer/exresolv.c')
| -rw-r--r-- | drivers/acpi/executer/exresolv.c | 63 |
1 files changed, 41 insertions, 22 deletions
diff --git a/drivers/acpi/executer/exresolv.c b/drivers/acpi/executer/exresolv.c index 7be60491115..3de45672379 100644 --- a/drivers/acpi/executer/exresolv.c +++ b/drivers/acpi/executer/exresolv.c @@ -54,6 +54,13 @@ #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exresolv") +/* Local prototypes */ + +static acpi_status +acpi_ex_resolve_object_to_value ( + union acpi_operand_object **stack_ptr, + struct acpi_walk_state *walk_state); + /******************************************************************************* * @@ -96,6 +103,11 @@ acpi_ex_resolve_to_value ( if (ACPI_FAILURE (status)) { return_ACPI_STATUS (status); } + + if (!*stack_ptr) { + ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, "Internal - null pointer\n")); + return_ACPI_STATUS (AE_AML_NO_OPERAND); + } } /* @@ -120,18 +132,17 @@ acpi_ex_resolve_to_value ( * * FUNCTION: acpi_ex_resolve_object_to_value * - * PARAMETERS: stack_ptr - Pointer to a stack location that contains a - * ptr to an internal object. + * PARAMETERS: stack_ptr - Pointer to an internal object * walk_state - Current method state * * RETURN: Status * - * DESCRIPTION: Retrieve the value from an internal object. The Reference type + * DESCRIPTION: Retrieve the value from an internal object. The Reference type * uses the associated AML opcode to determine the value. * ******************************************************************************/ -acpi_status +static acpi_status acpi_ex_resolve_object_to_value ( union acpi_operand_object **stack_ptr, struct acpi_walk_state *walk_state) @@ -159,7 +170,7 @@ acpi_ex_resolve_object_to_value ( case AML_NAME_OP: /* - * Convert indirect name ptr to a direct name ptr. + * Convert name reference to a namespace node * Then, acpi_ex_resolve_node_to_value can be used to get the value */ temp_node = stack_desc->reference.object; @@ -168,7 +179,7 @@ acpi_ex_resolve_object_to_value ( acpi_ut_remove_reference (stack_desc); - /* Put direct name pointer onto stack and exit */ + /* Return the namespace node */ (*stack_ptr) = temp_node; break; @@ -255,10 +266,19 @@ acpi_ex_resolve_object_to_value ( break; + case AML_INT_NAMEPATH_OP: /* Reference to a named object */ + + /* Get the object pointed to by the namespace node */ + + *stack_ptr = (stack_desc->reference.node)->object; + acpi_ut_add_reference (*stack_ptr); + acpi_ut_remove_reference (stack_desc); + break; default: - ACPI_REPORT_ERROR (("During resolve, Unknown Reference opcode %X (%s) in %p\n", + ACPI_REPORT_ERROR (( + "During resolve, Unknown Reference opcode %X (%s) in %p\n", opcode, acpi_ps_get_opcode_name (opcode), stack_desc)); status = AE_AML_INTERNAL; break; @@ -278,9 +298,8 @@ acpi_ex_resolve_object_to_value ( break; - /* - * These cases may never happen here, but just in case.. - */ + /* These cases may never happen here, but just in case.. */ + case ACPI_TYPE_BUFFER_FIELD: case ACPI_TYPE_LOCAL_REGION_FIELD: case ACPI_TYPE_LOCAL_BANK_FIELD: @@ -333,9 +352,8 @@ acpi_ex_resolve_multiple ( ACPI_FUNCTION_TRACE ("acpi_ex_resolve_multiple"); - /* - * Operand can be either a namespace node or an operand descriptor - */ + /* Operand can be either a namespace node or an operand descriptor */ + switch (ACPI_GET_DESCRIPTOR_TYPE (obj_desc)) { case ACPI_DESC_TYPE_OPERAND: type = obj_desc->common.type; @@ -357,10 +375,8 @@ acpi_ex_resolve_multiple ( return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } + /* If type is anything other than a reference, we are done */ - /* - * If type is anything other than a reference, we are done - */ if (type != ACPI_TYPE_LOCAL_REFERENCE) { goto exit; } @@ -382,8 +398,9 @@ acpi_ex_resolve_multiple ( /* All "References" point to a NS node */ if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) { - ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n", - node, acpi_ut_get_descriptor_name (node))); + ACPI_REPORT_ERROR (( + "acpi_ex_resolve_multiple: Not a NS node %p [%s]\n", + node, acpi_ut_get_descriptor_name (node))); return_ACPI_STATUS (AE_AML_INTERNAL); } @@ -440,8 +457,9 @@ acpi_ex_resolve_multiple ( /* All "References" point to a NS node */ if (ACPI_GET_DESCRIPTOR_TYPE (node) != ACPI_DESC_TYPE_NAMED) { - ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Not a NS node %p [%s]\n", - node, acpi_ut_get_descriptor_name (node))); + ACPI_REPORT_ERROR (( + "acpi_ex_resolve_multiple: Not a NS node %p [%s]\n", + node, acpi_ut_get_descriptor_name (node))); return_ACPI_STATUS (AE_AML_INTERNAL); } @@ -468,7 +486,7 @@ acpi_ex_resolve_multiple ( if (return_desc) { status = acpi_ds_method_data_get_value (obj_desc->reference.opcode, - obj_desc->reference.offset, walk_state, &obj_desc); + obj_desc->reference.offset, walk_state, &obj_desc); if (ACPI_FAILURE (status)) { return_ACPI_STATUS (status); } @@ -500,7 +518,8 @@ acpi_ex_resolve_multiple ( default: - ACPI_REPORT_ERROR (("acpi_ex_resolve_multiple: Unknown Reference subtype %X\n", + ACPI_REPORT_ERROR (( + "acpi_ex_resolve_multiple: Unknown Reference subtype %X\n", obj_desc->reference.opcode)); return_ACPI_STATUS (AE_AML_INTERNAL); } |