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-rw-r--r--drivers/acpi/acpica/evrgnini.c52
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/acpi/acpica/evrgnini.c b/drivers/acpi/acpica/evrgnini.c
index 984c172453bf..d28dee929e61 100644
--- a/drivers/acpi/acpica/evrgnini.c
+++ b/drivers/acpi/acpica/evrgnini.c
@@ -408,6 +408,58 @@ acpi_ev_cmos_region_setup(acpi_handle handle,
/*******************************************************************************
*
+ * FUNCTION: acpi_ev_data_table_region_setup
+ *
+ * PARAMETERS: handle - Region we are interested in
+ * function - Start or stop
+ * handler_context - Address space handler context
+ * region_context - Region specific context
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Setup a data_table_region
+ *
+ * MUTEX: Assumes namespace is not locked
+ *
+ ******************************************************************************/
+
+acpi_status
+acpi_ev_data_table_region_setup(acpi_handle handle,
+ u32 function,
+ void *handler_context, void **region_context)
+{
+ union acpi_operand_object *region_desc =
+ (union acpi_operand_object *)handle;
+ struct acpi_data_table_space_context *local_region_context;
+
+ ACPI_FUNCTION_TRACE(ev_data_table_region_setup);
+
+ if (function == ACPI_REGION_DEACTIVATE) {
+ if (*region_context) {
+ ACPI_FREE(*region_context);
+ *region_context = NULL;
+ }
+ return_ACPI_STATUS(AE_OK);
+ }
+
+ /* Create a new context */
+
+ local_region_context =
+ ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_data_table_space_context));
+ if (!(local_region_context)) {
+ return_ACPI_STATUS(AE_NO_MEMORY);
+ }
+
+ /* Save the data table pointer for use in the handler */
+
+ local_region_context->pointer = region_desc->region.pointer;
+
+ *region_context = local_region_context;
+ return_ACPI_STATUS(AE_OK);
+}
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_ev_default_region_setup
*
* PARAMETERS: handle - Region we are interested in