From defba1d8f233c0d5cf3e1ea6aeb898eca7231860 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Fri, 16 Dec 2005 17:05:00 -0500 Subject: [ACPI] ACPICA 20051216 Implemented optional support to allow unresolved names within ASL Package objects. A null object is inserted in the package when a named reference cannot be located in the current namespace. Enabled via the interpreter slack flag which Linux has enabled by default (acpi=strict to disable slack). This should eliminate AE_NOT_FOUND exceptions seen on machines that contain such code. Implemented an optimization to the initialization sequence that can improve boot time. During ACPI device initialization, the _STA method is now run if and only if the _INI method exists. The _STA method is used to determine if the device is present; An _INI can only be run if _STA returns present, but it is a waste of time to run the _STA method if the _INI does not exist. (Prototype and assistance from Dong Wei) Implemented use of the C99 uintptr_t for the pointer casting macros if it is available in the current compiler. Otherwise, the default (void *) cast is used as before. Fixed some possible memory leaks found within the execution path of the Break, Continue, If, and CreateField operators. (Valery Podrezov) Fixed a problem introduced in the 20051202 release where an exception is generated during method execution if a control method attempts to declare another method. Signed-off-by: Bob Moore Signed-off-by: Len Brown --- drivers/acpi/namespace/nsinit.c | 85 +++++++++++++++++++++++------------------ 1 file changed, 48 insertions(+), 37 deletions(-) (limited to 'drivers/acpi/namespace/nsinit.c') diff --git a/drivers/acpi/namespace/nsinit.c b/drivers/acpi/namespace/nsinit.c index 0a08d2f04a0..efa3f423373 100644 --- a/drivers/acpi/namespace/nsinit.c +++ b/drivers/acpi/namespace/nsinit.c @@ -336,23 +336,22 @@ acpi_ns_init_one_device(acpi_handle obj_handle, struct acpi_parameter_info pinfo; u32 flags; acpi_status status; + struct acpi_namespace_node *ini_node; + struct acpi_namespace_node *device_node; ACPI_FUNCTION_TRACE("ns_init_one_device"); - pinfo.parameters = NULL; - pinfo.parameter_type = ACPI_PARAM_ARGS; - - pinfo.node = acpi_ns_map_handle_to_node(obj_handle); - if (!pinfo.node) { + device_node = acpi_ns_map_handle_to_node(obj_handle); + if (!device_node) { return_ACPI_STATUS(AE_BAD_PARAMETER); } /* * We will run _STA/_INI on Devices, Processors and thermal_zones only */ - if ((pinfo.node->type != ACPI_TYPE_DEVICE) && - (pinfo.node->type != ACPI_TYPE_PROCESSOR) && - (pinfo.node->type != ACPI_TYPE_THERMAL)) { + if ((device_node->type != ACPI_TYPE_DEVICE) && + (device_node->type != ACPI_TYPE_PROCESSOR) && + (device_node->type != ACPI_TYPE_THERMAL)) { return_ACPI_STATUS(AE_OK); } @@ -364,57 +363,69 @@ acpi_ns_init_one_device(acpi_handle obj_handle, info->device_count++; /* - * Run _STA to determine if we can run _INI on the device. + * Check if the _INI method exists for this device - + * if _INI does not exist, there is no need to run _STA + * No _INI means device requires no initialization + */ + status = acpi_ns_search_node(*ACPI_CAST_PTR(u32, METHOD_NAME__INI), + device_node, ACPI_TYPE_METHOD, &ini_node); + if (ACPI_FAILURE(status)) { + /* No _INI method found - move on to next device */ + + return_ACPI_STATUS(AE_OK); + } + + /* + * Run _STA to determine if we can run _INI on the device - + * the device must be present before _INI can be run. + * However, _STA is not required - assume device present if no _STA */ ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD, - pinfo.node, + device_node, METHOD_NAME__STA)); - status = acpi_ut_execute_STA(pinfo.node, &flags); + pinfo.node = device_node; + pinfo.parameters = NULL; + pinfo.parameter_type = ACPI_PARAM_ARGS; + + status = acpi_ut_execute_STA(pinfo.node, &flags); if (ACPI_FAILURE(status)) { - if (pinfo.node->type == ACPI_TYPE_DEVICE) { - /* Ignore error and move on to next device */ + /* Ignore error and move on to next device */ - return_ACPI_STATUS(AE_OK); - } + return_ACPI_STATUS(AE_OK); + } - /* _STA is not required for Processor or thermal_zone objects */ - } else { + if (flags != ACPI_UINT32_MAX) { info->num_STA++; + } - if (!(flags & 0x01)) { - /* Don't look at children of a not present device */ + if (!(flags & ACPI_STA_DEVICE_PRESENT)) { + /* Don't look at children of a not present device */ - return_ACPI_STATUS(AE_CTRL_DEPTH); - } + return_ACPI_STATUS(AE_CTRL_DEPTH); } /* - * The device is present. Run _INI. + * The device is present and _INI exists. Run the _INI method. + * (We already have the _INI node from above) */ ACPI_DEBUG_EXEC(acpi_ut_display_init_pathname(ACPI_TYPE_METHOD, pinfo.node, METHOD_NAME__INI)); - status = acpi_ns_evaluate_relative(METHOD_NAME__INI, &pinfo); - if (ACPI_FAILURE(status)) { - /* No _INI (AE_NOT_FOUND) means device requires no initialization */ - if (status != AE_NOT_FOUND) { - /* Ignore error and move on to next device */ + pinfo.node = ini_node; + status = acpi_ns_evaluate_by_handle(&pinfo); + if (ACPI_FAILURE(status)) { + /* Ignore error and move on to next device */ #ifdef ACPI_DEBUG_OUTPUT - char *scope_name = - acpi_ns_get_external_pathname(pinfo.node); + char *scope_name = acpi_ns_get_external_pathname(ini_node); - ACPI_DEBUG_PRINT((ACPI_DB_WARN, "%s._INI failed: %s\n", - scope_name, - acpi_format_exception(status))); + ACPI_DEBUG_PRINT((ACPI_DB_WARN, "%s._INI failed: %s\n", + scope_name, acpi_format_exception(status))); - ACPI_MEM_FREE(scope_name); + ACPI_MEM_FREE(scope_name); #endif - } - - status = AE_OK; } else { /* Delete any return object (especially if implicit_return is enabled) */ @@ -434,5 +445,5 @@ acpi_ns_init_one_device(acpi_handle obj_handle, acpi_gbl_init_handler(pinfo.node, ACPI_INIT_DEVICE_INI); } - return_ACPI_STATUS(status); + return_ACPI_STATUS(AE_OK); } -- cgit v1.2.3-70-g09d2