Routines for suspend2 modules to use at boot or module load/unload.
Signed-off-by: Nigel Cunningham <[email protected]>
kernel/power/modules.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 71 insertions(+), 0 deletions(-)
diff --git a/kernel/power/modules.c b/kernel/power/modules.c
index 50607f5..6305fa2 100644
--- a/kernel/power/modules.c
+++ b/kernel/power/modules.c
@@ -116,3 +116,74 @@ int suspend_print_module_debug_info(char
return len;
}
+/*
+ * suspend_register_module
+ *
+ * Register a module.
+ */
+int suspend_register_module(struct suspend_module_ops *module)
+{
+ if (suspend_find_module_given_name(module->name))
+ return -EBUSY;
+
+ switch (module->type) {
+ case FILTER_MODULE:
+ list_add_tail(&module->type_list,
+ &suspend_filters);
+ suspend_num_filters++;
+ break;
+
+ case WRITER_MODULE:
+ list_add_tail(&module->type_list,
+ &suspend_writers);
+ suspend_num_writers++;
+ break;
+
+ case MISC_MODULE:
+ break;
+
+ default:
+ printk("Hmmm. Module '%s' has an invalid type."
+ " It has been ignored.\n", module->name);
+ return -EINVAL;
+ }
+ list_add_tail(&module->module_list, &suspend_modules);
+ suspend_num_modules++;
+
+ return 0;
+}
+
+/*
+ * suspend_unregister_module
+ *
+ * Remove a module.
+ */
+void suspend_unregister_module(struct suspend_module_ops *module)
+{
+ switch (module->type) {
+ case FILTER_MODULE:
+ list_del(&module->type_list);
+ suspend_num_filters--;
+ break;
+
+ case WRITER_MODULE:
+ list_del(&module->type_list);
+ suspend_num_writers--;
+ if (suspend_active_writer == module) {
+ suspend_active_writer = NULL;
+ clear_suspend_state(SUSPEND_CAN_RESUME);
+ clear_suspend_state(SUSPEND_CAN_SUSPEND);
+ }
+ break;
+
+ case MISC_MODULE:
+ break;
+
+ default:
+ printk("Hmmm. Module '%s' has an invalid type."
+ " It has been ignored.\n", module->name);
+ return;
+ }
+ list_del(&module->module_list);
+ suspend_num_modules--;
+}
--
Nigel Cunningham nigel at suspend2 dot net
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