Messages in this thread Patch in this message | | | From | Nigel Cunningham <> | Subject | [Suspend2][ 06/11] [Suspend2] Register and unregister suspend2 modules. | Date | Tue, 27 Jun 2006 02:53:21 +1000 |
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Routines for suspend2 modules to use at boot or module load/unload.
Signed-off-by: Nigel Cunningham <nigel@suspend2.net>
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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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