diff options
Diffstat (limited to 'drivers/acpi/acpica/nsxfeval.c')
| -rw-r--r-- | drivers/acpi/acpica/nsxfeval.c | 32 |
1 files changed, 19 insertions, 13 deletions
diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c index 4929dbdbc8f0..f2bd1da77001 100644 --- a/drivers/acpi/acpica/nsxfeval.c +++ b/drivers/acpi/acpica/nsxfeval.c @@ -433,8 +433,11 @@ static void acpi_ns_resolve_references(struct acpi_evaluate_info *info) * PARAMETERS: Type - acpi_object_type to search for * start_object - Handle in namespace where search begins * max_depth - Depth to which search is to reach - * user_function - Called when an object of "Type" is found - * Context - Passed to user function + * pre_order_visit - Called during tree pre-order visit + * when an object of "Type" is found + * post_order_visit - Called during tree post-order visit + * when an object of "Type" is found + * Context - Passed to user function(s) above * return_value - Location where return value of * user_function is put if terminated early * @@ -443,16 +446,16 @@ static void acpi_ns_resolve_references(struct acpi_evaluate_info *info) * * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, * starting (and ending) at the object specified by start_handle. - * The user_function is called whenever an object that matches - * the type parameter is found. If the user function returns + * The callback function is called whenever an object that matches + * the type parameter is found. If the callback function returns * a non-zero value, the search is terminated immediately and this * value is returned to the caller. * * The point of this procedure is to provide a generic namespace * walk routine that can be called from multiple places to - * provide multiple services; the User Function can be tailored - * to each task, whether it is a print function, a compare - * function, etc. + * provide multiple services; the callback function(s) can be + * tailored to each task, whether it is a print function, + * a compare function, etc. * ******************************************************************************/ @@ -460,7 +463,8 @@ acpi_status acpi_walk_namespace(acpi_object_type type, acpi_handle start_object, u32 max_depth, - acpi_walk_callback user_function, + acpi_walk_callback pre_order_visit, + acpi_walk_callback post_order_visit, void *context, void **return_value) { acpi_status status; @@ -469,7 +473,8 @@ acpi_walk_namespace(acpi_object_type type, /* Parameter validation */ - if ((type > ACPI_TYPE_LOCAL_MAX) || (!max_depth) || (!user_function)) { + if ((type > ACPI_TYPE_LOCAL_MAX) || + (!max_depth) || (!pre_order_visit && !post_order_visit)) { return_ACPI_STATUS(AE_BAD_PARAMETER); } @@ -501,8 +506,9 @@ acpi_walk_namespace(acpi_object_type type, } status = acpi_ns_walk_namespace(type, start_object, max_depth, - ACPI_NS_WALK_UNLOCK, user_function, - context, return_value); + ACPI_NS_WALK_UNLOCK, pre_order_visit, + post_order_visit, context, + return_value); (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); @@ -681,8 +687,8 @@ acpi_get_devices(const char *HID, status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, - acpi_ns_get_device_callback, &info, - return_value); + acpi_ns_get_device_callback, NULL, + &info, return_value); (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_ACPI_STATUS(status); |