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Subject[PATCH 6/6] ACPICA: Tables: Add acpi_tb_unload_table()
Date
This patch introduces acpi_tb_unload_table() to eliminate redundant code from
acpi_ex_unload_table() and acpi_unload_parent_table().

No functional change. Lv Zheng.

Signed-off-by: Lv Zheng <lv.zheng@intel.com>
---
drivers/acpi/acpica/actables.h | 2 ++
drivers/acpi/acpica/exconfig.c | 35 +-----------------------------
drivers/acpi/acpica/tbdata.c | 48 ++++++++++++++++++++++++++++++++++++++++++
drivers/acpi/acpica/tbxfload.c | 31 +--------------------------
4 files changed, 52 insertions(+), 64 deletions(-)

diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h
index 1850005..7dd527f 100644
--- a/drivers/acpi/acpica/actables.h
+++ b/drivers/acpi/acpica/actables.h
@@ -130,6 +130,8 @@ acpi_status
acpi_tb_install_and_load_table(acpi_physical_address address,
u8 flags, u8 override, u32 *table_index);

+acpi_status acpi_tb_unload_table(u32 table_index);
+
void acpi_tb_terminate(void);

acpi_status acpi_tb_delete_namespace_by_owner(u32 table_index);
diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c
index 8b8d620..c32c782 100644
--- a/drivers/acpi/acpica/exconfig.c
+++ b/drivers/acpi/acpica/exconfig.c
@@ -499,7 +499,6 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle)
acpi_status status = AE_OK;
union acpi_operand_object *table_desc = ddb_handle;
u32 table_index;
- struct acpi_table_header *table;

ACPI_FUNCTION_TRACE(ex_unload_table);

@@ -536,39 +535,7 @@ acpi_status acpi_ex_unload_table(union acpi_operand_object *ddb_handle)
* strict order requirement against it.
*/
acpi_ex_exit_interpreter();
-
- /* Ensure the table is still loaded */
-
- if (!acpi_tb_is_table_loaded(table_index)) {
- status = AE_NOT_EXIST;
- goto lock_and_exit;
- }
-
- /* Invoke table handler if present */
-
- if (acpi_gbl_table_handler) {
- status = acpi_get_table_by_index(table_index, &table);
- if (ACPI_SUCCESS(status)) {
- (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
- table,
- acpi_gbl_table_handler_context);
- }
- }
-
- /* Delete the portion of the namespace owned by this table */
-
- status = acpi_tb_delete_namespace_by_owner(table_index);
- if (ACPI_FAILURE(status)) {
- goto lock_and_exit;
- }
-
- (void)acpi_tb_release_owner_id(table_index);
- acpi_tb_set_table_loaded_flag(table_index, FALSE);
-
-lock_and_exit:
-
- /* Re-acquire the interpreter lock */
-
+ status = acpi_tb_unload_table(table_index);
acpi_ex_enter_interpreter();

/*
diff --git a/drivers/acpi/acpica/tbdata.c b/drivers/acpi/acpica/tbdata.c
index 4cbfa30..82b0b57 100644
--- a/drivers/acpi/acpica/tbdata.c
+++ b/drivers/acpi/acpica/tbdata.c
@@ -871,3 +871,51 @@ unlock_and_exit:
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
return_ACPI_STATUS(status);
}
+
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_tb_unload_table
+ *
+ * PARAMETERS: table_index - Table index
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Unload an ACPI table
+ *
+ ******************************************************************************/
+
+acpi_status acpi_tb_unload_table(u32 table_index)
+{
+ acpi_status status = AE_OK;
+ struct acpi_table_header *table;
+
+ ACPI_FUNCTION_TRACE(tb_unload_table);
+
+ /* Ensure the table is still loaded */
+
+ if (!acpi_tb_is_table_loaded(table_index)) {
+ return_ACPI_STATUS(AE_NOT_EXIST);
+ }
+
+ /* Invoke table handler if present */
+
+ if (acpi_gbl_table_handler) {
+ status = acpi_get_table_by_index(table_index, &table);
+ if (ACPI_SUCCESS(status)) {
+ (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
+ table,
+ acpi_gbl_table_handler_context);
+ }
+ }
+
+ /* Delete the portion of the namespace owned by this table */
+
+ status = acpi_tb_delete_namespace_by_owner(table_index);
+ if (ACPI_FAILURE(status)) {
+ return_ACPI_STATUS(status);
+ }
+
+ (void)acpi_tb_release_owner_id(table_index);
+ acpi_tb_set_table_loaded_flag(table_index, FALSE);
+ return_ACPI_STATUS(status);
+}
diff --git a/drivers/acpi/acpica/tbxfload.c b/drivers/acpi/acpica/tbxfload.c
index 35d3f9b..940254c 100644
--- a/drivers/acpi/acpica/tbxfload.c
+++ b/drivers/acpi/acpica/tbxfload.c
@@ -404,37 +404,8 @@ acpi_status acpi_unload_parent_table(acpi_handle object)
break;
}

- /* Ensure the table is actually loaded */
-
(void)acpi_ut_release_mutex(ACPI_MTX_TABLES);
- if (!acpi_tb_is_table_loaded(i)) {
- status = AE_NOT_EXIST;
- (void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
- break;
- }
-
- /* Invoke table handler if present */
-
- if (acpi_gbl_table_handler) {
- (void)acpi_gbl_table_handler(ACPI_TABLE_EVENT_UNLOAD,
- acpi_gbl_root_table_list.
- tables[i].pointer,
- acpi_gbl_table_handler_context);
- }
-
- /*
- * 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.
- */
- status = acpi_tb_delete_namespace_by_owner(i);
- if (ACPI_FAILURE(status)) {
- break;
- }
-
- status = acpi_tb_release_owner_id(i);
- acpi_tb_set_table_loaded_flag(i, FALSE);
+ status = acpi_tb_unload_table(i);
(void)acpi_ut_acquire_mutex(ACPI_MTX_TABLES);
break;
}
--
2.7.4
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