diff --git a/drivers/acpi/namespace/nsxfobj.c b/drivers/acpi/namespace/nsxfobj.c index a163e1d3708d1a2ba96f3149aed56e1ca1da2eb6..a18b1c223129820da9513a78be11d1cbb1eb73e2 100644 --- a/drivers/acpi/namespace/nsxfobj.c +++ b/drivers/acpi/namespace/nsxfobj.c @@ -48,6 +48,50 @@ #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME("nsxfobj") +/******************************************************************************* + * + * FUNCTION: acpi_get_id + * + * PARAMETERS: Handle - Handle of object whose id is desired + * ret_id - Where the id will be placed + * + * RETURN: Status + * + * DESCRIPTION: This routine returns the owner id associated with a handle + * + ******************************************************************************/ +acpi_status acpi_get_id(acpi_handle handle, acpi_owner_id * ret_id) +{ + struct acpi_namespace_node *node; + acpi_status status; + + /* Parameter Validation */ + + if (!ret_id) { + return (AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + return (status); + } + + /* Convert and validate the handle */ + + node = acpi_ns_map_handle_to_node(handle); + if (!node) { + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return (AE_BAD_PARAMETER); + } + + *ret_id = node->owner_id; + + status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + return (status); +} + +ACPI_EXPORT_SYMBOL(acpi_get_id) + /******************************************************************************* * * FUNCTION: acpi_get_type diff --git a/drivers/acpi/tables/tbxface.c b/drivers/acpi/tables/tbxface.c index 7767987be15a0d517acf10fa5b6327b203e08f23..5ba9303293ad968c4366ca49c4044291cd4bf10c 100644 --- a/drivers/acpi/tables/tbxface.c +++ b/drivers/acpi/tables/tbxface.c @@ -123,7 +123,6 @@ acpi_status acpi_load_tables(void) ACPI_EXPORT_SYMBOL(acpi_load_tables) -#ifdef ACPI_FUTURE_USAGE /******************************************************************************* * * FUNCTION: acpi_load_table @@ -219,6 +218,59 @@ acpi_status acpi_load_table(struct acpi_table_header *table_ptr) ACPI_EXPORT_SYMBOL(acpi_load_table) +/******************************************************************************* + * + * FUNCTION: acpi_unload_table_id + * + * PARAMETERS: table_type - Type of table to be unloaded + * id - Owner ID of the table to be removed. + * + * RETURN: Status + * + * DESCRIPTION: This routine is used to force the unload of a table (by id) + * + ******************************************************************************/ +acpi_status acpi_unload_table_id(acpi_table_type table_type, acpi_owner_id id) +{ + struct acpi_table_desc *table_desc; + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_unload_table); + + /* Parameter validation */ + if (table_type > ACPI_TABLE_ID_MAX) + return_ACPI_STATUS(AE_BAD_PARAMETER); + + /* Find table from the requested type list */ + table_desc = acpi_gbl_table_lists[table_type].next; + while (table_desc && table_desc->owner_id != id) + table_desc = table_desc->next; + + if (!table_desc) + return_ACPI_STATUS(AE_NOT_EXIST); + + /* + * Delete all namespace objects owned by this table. Note that these + * objects can appear anywhere in the namespace by virtue of the AML + * "Scope" operator. Thus, we need to track ownership by an ID, not + * simply a position within the hierarchy + */ + acpi_ns_delete_namespace_by_owner(table_desc->owner_id); + + status = acpi_ut_acquire_mutex(ACPI_MTX_TABLES); + if (ACPI_FAILURE(status)) + return_ACPI_STATUS(status); + + (void)acpi_tb_uninstall_table(table_desc); + + (void)acpi_ut_release_mutex(ACPI_MTX_TABLES); + + return_ACPI_STATUS(AE_OK); +} + +ACPI_EXPORT_SYMBOL(acpi_unload_table_id) + +#ifdef ACPI_FUTURE_USAGE /******************************************************************************* * * FUNCTION: acpi_unload_table diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 049e9aa1b8678e827b201ebc9eb22cf269dc11d6..81458767a90e8815bc22b8b56d7389a3cb355a9d 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -97,11 +97,12 @@ acpi_find_root_pointer(u32 flags, struct acpi_pointer *rsdp_address); acpi_status acpi_load_tables(void); -#ifdef ACPI_FUTURE_USAGE acpi_status acpi_load_table(struct acpi_table_header *table_ptr); -acpi_status acpi_unload_table(acpi_table_type table_type); +acpi_status acpi_unload_table_id(acpi_table_type table_type, acpi_owner_id id); +#ifdef ACPI_FUTURE_USAGE +acpi_status acpi_unload_table(acpi_table_type table_type); acpi_status acpi_get_table_header(acpi_table_type table_type, u32 instance, struct acpi_table_header *out_table_header); @@ -180,6 +181,8 @@ acpi_get_next_object(acpi_object_type type, acpi_status acpi_get_type(acpi_handle object, acpi_object_type * out_type); +acpi_status acpi_get_id(acpi_handle object, acpi_owner_id * out_type); + acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle); /*