diff options
| -rw-r--r-- | drivers/thermal/thermal_core.c | 41 |
1 files changed, 24 insertions, 17 deletions
diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c index 46cfb7de4eb2..12242fdf0a0e 100644 --- a/drivers/thermal/thermal_core.c +++ b/drivers/thermal/thermal_core.c @@ -1462,6 +1462,8 @@ static struct genl_family thermal_event_genl_family __ro_after_init = { .n_mcgrps = ARRAY_SIZE(thermal_event_mcgrps), }; +static bool allow_netlink_events; + int thermal_generate_netlink_event(struct thermal_zone_device *tz, enum events event) { @@ -1476,6 +1478,9 @@ int thermal_generate_netlink_event(struct thermal_zone_device *tz, if (!tz) return -EINVAL; + if (!allow_netlink_events) + return -ENODEV; + /* allocate memory */ size = nla_total_size(sizeof(struct thermal_genl_event)) + nla_total_size(0); @@ -1527,16 +1532,18 @@ EXPORT_SYMBOL_GPL(thermal_generate_netlink_event); static int __init genetlink_init(void) { - return genl_register_family(&thermal_event_genl_family); -} + int err; -static void genetlink_exit(void) -{ - genl_unregister_family(&thermal_event_genl_family); + err = genl_register_family(&thermal_event_genl_family); + if (!err) + allow_netlink_events = true; + return err; } + #else /* !CONFIG_NET */ static inline int genetlink_init(void) { return 0; } -static inline void genetlink_exit(void) {} +static inline int thermal_generate_netlink_event(struct thermal_zone_device *tz, + enum events event) { return -ENODEV; } #endif /* !CONFIG_NET */ static int thermal_pm_notify(struct notifier_block *nb, @@ -1585,19 +1592,15 @@ static int __init thermal_init(void) mutex_init(&poweroff_lock); result = thermal_register_governors(); if (result) - goto error; + goto init_exit; result = class_register(&thermal_class); if (result) goto unregister_governors; - result = genetlink_init(); - if (result) - goto unregister_class; - result = of_parse_thermal_zones(); if (result) - goto exit_netlink; + goto exit_zone_parse; result = register_pm_notifier(&thermal_pm_nb); if (result) @@ -1606,13 +1609,11 @@ static int __init thermal_init(void) return 0; -exit_netlink: - genetlink_exit(); -unregister_class: +exit_zone_parse: class_unregister(&thermal_class); unregister_governors: thermal_unregister_governors(); -error: +init_exit: ida_destroy(&thermal_tz_ida); ida_destroy(&thermal_cdev_ida); mutex_destroy(&thermal_list_lock); @@ -1620,4 +1621,10 @@ error: mutex_destroy(&poweroff_lock); return result; } -fs_initcall(thermal_init); + +static int __init thermal_netlink_init(void) +{ + return genetlink_init(); +} +core_initcall(thermal_init); +fs_initcall(thermal_netlink_init); |