diff options
Diffstat (limited to 'net/rfkill')
| -rw-r--r-- | net/rfkill/rfkill-input.c | 337 | ||||
| -rw-r--r-- | net/rfkill/rfkill-input.h | 3 | ||||
| -rw-r--r-- | net/rfkill/rfkill.c | 183 |
3 files changed, 358 insertions, 165 deletions
diff --git a/net/rfkill/rfkill-input.c b/net/rfkill/rfkill-input.c index bfdade72e066..84efde97c5a7 100644 --- a/net/rfkill/rfkill-input.c +++ b/net/rfkill/rfkill-input.c @@ -24,138 +24,318 @@ MODULE_AUTHOR("Dmitry Torokhov <dtor@mail.ru>"); MODULE_DESCRIPTION("Input layer to RF switch connector"); MODULE_LICENSE("GPL"); +enum rfkill_input_master_mode { + RFKILL_INPUT_MASTER_DONOTHING = 0, + RFKILL_INPUT_MASTER_RESTORE = 1, + RFKILL_INPUT_MASTER_UNBLOCKALL = 2, + RFKILL_INPUT_MASTER_MAX, /* marker */ +}; + +/* Delay (in ms) between consecutive switch ops */ +#define RFKILL_OPS_DELAY 200 + +static enum rfkill_input_master_mode rfkill_master_switch_mode = + RFKILL_INPUT_MASTER_UNBLOCKALL; +module_param_named(master_switch_mode, rfkill_master_switch_mode, uint, 0); +MODULE_PARM_DESC(master_switch_mode, + "SW_RFKILL_ALL ON should: 0=do nothing; 1=restore; 2=unblock all"); + +enum rfkill_global_sched_op { + RFKILL_GLOBAL_OP_EPO = 0, + RFKILL_GLOBAL_OP_RESTORE, + RFKILL_GLOBAL_OP_UNLOCK, + RFKILL_GLOBAL_OP_UNBLOCK, +}; + +/* + * Currently, the code marked with RFKILL_NEED_SWSET is inactive. + * If handling of EV_SW SW_WLAN/WWAN/BLUETOOTH/etc is needed in the + * future, when such events are added, that code will be necessary. + */ + struct rfkill_task { - struct work_struct work; - enum rfkill_type type; - struct mutex mutex; /* ensures that task is serialized */ - spinlock_t lock; /* for accessing last and desired state */ - unsigned long last; /* last schedule */ - enum rfkill_state desired_state; /* on/off */ + struct delayed_work dwork; + + /* ensures that task is serialized */ + struct mutex mutex; + + /* protects everything below */ + spinlock_t lock; + + /* pending regular switch operations (1=pending) */ + unsigned long sw_pending[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; + +#ifdef RFKILL_NEED_SWSET + /* set operation pending (1=pending) */ + unsigned long sw_setpending[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; + + /* desired state for pending set operation (1=unblock) */ + unsigned long sw_newstate[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; +#endif + + /* should the state be complemented (1=yes) */ + unsigned long sw_togglestate[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; + + bool global_op_pending; + enum rfkill_global_sched_op op; + + /* last time it was scheduled */ + unsigned long last_scheduled; }; +static void __rfkill_handle_global_op(enum rfkill_global_sched_op op) +{ + unsigned int i; + + switch (op) { + case RFKILL_GLOBAL_OP_EPO: + rfkill_epo(); + break; + case RFKILL_GLOBAL_OP_RESTORE: + rfkill_restore_states(); + break; + case RFKILL_GLOBAL_OP_UNLOCK: + rfkill_remove_epo_lock(); + break; + case RFKILL_GLOBAL_OP_UNBLOCK: + rfkill_remove_epo_lock(); + for (i = 0; i < RFKILL_TYPE_MAX; i++) + rfkill_switch_all(i, RFKILL_STATE_UNBLOCKED); + break; + default: + /* memory corruption or bug, fail safely */ + rfkill_epo(); + WARN(1, "Unknown requested operation %d! " + "rfkill Emergency Power Off activated\n", + op); + } +} + +#ifdef RFKILL_NEED_SWSET +static void __rfkill_handle_normal_op(const enum rfkill_type type, + const bool sp, const bool s, const bool c) +{ + enum rfkill_state state; + + if (sp) + state = (s) ? RFKILL_STATE_UNBLOCKED : + RFKILL_STATE_SOFT_BLOCKED; + else + state = rfkill_get_global_state(type); + + if (c) + state = rfkill_state_complement(state); + + rfkill_switch_all(type, state); +} +#else +static void __rfkill_handle_normal_op(const enum rfkill_type type, + const bool c) +{ + enum rfkill_state state; + + state = rfkill_get_global_state(type); + if (c) + state = rfkill_state_complement(state); + + rfkill_switch_all(type, state); +} +#endif + static void rfkill_task_handler(struct work_struct *work) { - struct rfkill_task *task = container_of(work, struct rfkill_task, work); + struct rfkill_task *task = container_of(work, + struct rfkill_task, dwork.work); + bool doit = true; mutex_lock(&task->mutex); - rfkill_switch_all(task->type, task->desired_state); + spin_lock_irq(&task->lock); + while (doit) { + if (task->global_op_pending) { + enum rfkill_global_sched_op op = task->op; + task->global_op_pending = false; + memset(task->sw_pending, 0, sizeof(task->sw_pending)); + spin_unlock_irq(&task->lock); + + __rfkill_handle_global_op(op); + + /* make sure we do at least one pass with + * !task->global_op_pending */ + spin_lock_irq(&task->lock); + continue; + } else if (!rfkill_is_epo_lock_active()) { + unsigned int i = 0; + + while (!task->global_op_pending && + i < RFKILL_TYPE_MAX) { + if (test_and_clear_bit(i, task->sw_pending)) { + bool c; +#ifdef RFKILL_NEED_SWSET + bool sp, s; + sp = test_and_clear_bit(i, + task->sw_setpending); + s = test_bit(i, task->sw_newstate); +#endif + c = test_and_clear_bit(i, + task->sw_togglestate); + spin_unlock_irq(&task->lock); + +#ifdef RFKILL_NEED_SWSET + __rfkill_handle_normal_op(i, sp, s, c); +#else + __rfkill_handle_normal_op(i, c); +#endif + + spin_lock_irq(&task->lock); + } + i++; + } + } + doit = task->global_op_pending; + } + spin_unlock_irq(&task->lock); mutex_unlock(&task->mutex); } -static void rfkill_task_epo_handler(struct work_struct *work) +static struct rfkill_task rfkill_task = { + .dwork = __DELAYED_WORK_INITIALIZER(rfkill_task.dwork, + rfkill_task_handler), + .mutex = __MUTEX_INITIALIZER(rfkill_task.mutex), + .lock = __SPIN_LOCK_UNLOCKED(rfkill_task.lock), +}; + +static unsigned long rfkill_ratelimit(const unsigned long last) { - rfkill_epo(); + const unsigned long delay = msecs_to_jiffies(RFKILL_OPS_DELAY); + return (time_after(jiffies, last + delay)) ? 0 : delay; } -static DECLARE_WORK(epo_work, rfkill_task_epo_handler); +static void rfkill_schedule_ratelimited(void) +{ + if (!delayed_work_pending(&rfkill_task.dwork)) { + schedule_delayed_work(&rfkill_task.dwork, + rfkill_ratelimit(rfkill_task.last_scheduled)); + rfkill_task.last_scheduled = jiffies; + } +} -static void rfkill_schedule_epo(void) +static void rfkill_schedule_global_op(enum rfkill_global_sched_op op) { - schedule_work(&epo_work); + unsigned long flags; + + spin_lock_irqsave(&rfkill_task.lock, flags); + rfkill_task.op = op; + rfkill_task.global_op_pending = true; + if (op == RFKILL_GLOBAL_OP_EPO && !rfkill_is_epo_lock_active()) { + /* bypass the limiter for EPO */ + cancel_delayed_work(&rfkill_task.dwork); + schedule_delayed_work(&rfkill_task.dwork, 0); + rfkill_task.last_scheduled = jiffies; + } else + rfkill_schedule_ratelimited(); + spin_unlock_irqrestore(&rfkill_task.lock, flags); } -static void rfkill_schedule_set(struct rfkill_task *task, +#ifdef RFKILL_NEED_SWSET +/* Use this if you need to add EV_SW SW_WLAN/WWAN/BLUETOOTH/etc handling */ + +static void rfkill_schedule_set(enum rfkill_type type, enum rfkill_state desired_state) { unsigned long flags; - if (unlikely(work_pending(&epo_work))) + if (rfkill_is_epo_lock_active()) return; - spin_lock_irqsave(&task->lock, flags); - - if (time_after(jiffies, task->last + msecs_to_jiffies(200))) { - task->desired_state = desired_state; - task->last = jiffies; - schedule_work(&task->work); + spin_lock_irqsave(&rfkill_task.lock, flags); + if (!rfkill_task.global_op_pending) { + set_bit(type, rfkill_task.sw_pending); + set_bit(type, rfkill_task.sw_setpending); + clear_bit(type, rfkill_task.sw_togglestate); + if (desired_state) + set_bit(type, rfkill_task.sw_newstate); + else + clear_bit(type, rfkill_task.sw_newstate); + rfkill_schedule_ratelimited(); } - - spin_unlock_irqrestore(&task->lock, flags); + spin_unlock_irqrestore(&rfkill_task.lock, flags); } +#endif -static void rfkill_schedule_toggle(struct rfkill_task *task) +static void rfkill_schedule_toggle(enum rfkill_type type) { unsigned long flags; - if (unlikely(work_pending(&epo_work))) + if (rfkill_is_epo_lock_active()) return; - spin_lock_irqsave(&task->lock, flags); - - if (time_after(jiffies, task->last + msecs_to_jiffies(200))) { - task->desired_state = - rfkill_state_complement(task->desired_state); - task->last = jiffies; - schedule_work(&task->work); + spin_lock_irqsave(&rfkill_task.lock, flags); + if (!rfkill_task.global_op_pending) { + set_bit(type, rfkill_task.sw_pending); + change_bit(type, rfkill_task.sw_togglestate); + rfkill_schedule_ratelimited(); } - - spin_unlock_irqrestore(&task->lock, flags); + spin_unlock_irqrestore(&rfkill_task.lock, flags); } -#define DEFINE_RFKILL_TASK(n, t) \ - struct rfkill_task n = { \ - .work = __WORK_INITIALIZER(n.work, \ - rfkill_task_handler), \ - .type = t, \ - .mutex = __MUTEX_INITIALIZER(n.mutex), \ - .lock = __SPIN_LOCK_UNLOCKED(n.lock), \ - .desired_state = RFKILL_STATE_UNBLOCKED, \ - } - -static DEFINE_RFKILL_TASK(rfkill_wlan, RFKILL_TYPE_WLAN); -static DEFINE_RFKILL_TASK(rfkill_bt, RFKILL_TYPE_BLUETOOTH); -static DEFINE_RFKILL_TASK(rfkill_uwb, RFKILL_TYPE_UWB); -static DEFINE_RFKILL_TASK(rfkill_wimax, RFKILL_TYPE_WIMAX); -static DEFINE_RFKILL_TASK(rfkill_wwan, RFKILL_TYPE_WWAN); - static void rfkill_schedule_evsw_rfkillall(int state) { - /* EVERY radio type. state != 0 means radios ON */ - /* handle EPO (emergency power off) through shortcut */ if (state) { - rfkill_schedule_set(&rfkill_wwan, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_wimax, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_uwb, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_bt, - RFKILL_STATE_UNBLOCKED); - rfkill_schedule_set(&rfkill_wlan, - RFKILL_STATE_UNBLOCKED); + switch (rfkill_master_switch_mode) { + case RFKILL_INPUT_MASTER_UNBLOCKALL: + rfkill_schedule_global_op(RFKILL_GLOBAL_OP_UNBLOCK); + break; + case RFKILL_INPUT_MASTER_RESTORE: + rfkill_schedule_global_op(RFKILL_GLOBAL_OP_RESTORE); + break; + case RFKILL_INPUT_MASTER_DONOTHING: + rfkill_schedule_global_op(RFKILL_GLOBAL_OP_UNLOCK); + break; + default: + /* memory corruption or driver bug! fail safely */ + rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO); + WARN(1, "Unknown rfkill_master_switch_mode (%d), " + "driver bug or memory corruption detected!\n", + rfkill_master_switch_mode); + break; + } } else - rfkill_schedule_epo(); + rfkill_schedule_global_op(RFKILL_GLOBAL_OP_EPO); } static void rfkill_event(struct input_handle *handle, unsigned int type, unsigned int code, int data) { if (type == EV_KEY && data == 1) { + enum rfkill_type t; + switch (code) { case KEY_WLAN: - rfkill_schedule_toggle(&rfkill_wlan); + t = RFKILL_TYPE_WLAN; break; case KEY_BLUETOOTH: - rfkill_schedule_toggle(&rfkill_bt); + t = RFKILL_TYPE_BLUETOOTH; break; case KEY_UWB: - rfkill_schedule_toggle(&rfkill_uwb); + t = RFKILL_TYPE_UWB; break; case KEY_WIMAX: - rfkill_schedule_toggle(&rfkill_wimax); + t = RFKILL_TYPE_WIMAX; break; default: - break; + return; } + rfkill_schedule_toggle(t); + return; } else if (type == EV_SW) { switch (code) { case SW_RFKILL_ALL: rfkill_schedule_evsw_rfkillall(data); - break; + return; default: - break; + return; } } } @@ -256,18 +436,23 @@ static struct input_handler rfkill_handler = { static int __init rfkill_handler_init(void) { - unsigned long last_run = jiffies - msecs_to_jiffies(500); - rfkill_wlan.last = last_run; - rfkill_bt.last = last_run; - rfkill_uwb.last = last_run; - rfkill_wimax.last = last_run; + if (rfkill_master_switch_mode >= RFKILL_INPUT_MASTER_MAX) + return -EINVAL; + + /* + * The penalty to not doing this is a possible RFKILL_OPS_DELAY delay + * at the first use. Acceptable, but if we can avoid it, why not? + */ + rfkill_task.last_scheduled = + jiffies - msecs_to_jiffies(RFKILL_OPS_DELAY) - 1; return input_register_handler(&rfkill_handler); } static void __exit rfkill_handler_exit(void) { input_unregister_handler(&rfkill_handler); - flush_scheduled_work(); + cancel_delayed_work_sync(&rfkill_task.dwork); + rfkill_remove_epo_lock(); } module_init(rfkill_handler_init); diff --git a/net/rfkill/rfkill-input.h b/net/rfkill/rfkill-input.h index bbfa646157c6..fe8df6b5b935 100644 --- a/net/rfkill/rfkill-input.h +++ b/net/rfkill/rfkill-input.h @@ -14,5 +14,8 @@ void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state); void rfkill_epo(void); void rfkill_restore_states(void); +void rfkill_remove_epo_lock(void); +bool rfkill_is_epo_lock_active(void); +enum rfkill_state rfkill_get_global_state(const enum rfkill_type type); #endif /* __RFKILL_INPUT_H */ diff --git a/net/rfkill/rfkill.c b/net/rfkill/rfkill.c index 25ba3bd57e66..3c94f76d5525 100644 --- a/net/rfkill/rfkill.c +++ b/net/rfkill/rfkill.c @@ -51,51 +51,7 @@ struct rfkill_gsw_state { static struct rfkill_gsw_state rfkill_global_states[RFKILL_TYPE_MAX]; static unsigned long rfkill_states_lockdflt[BITS_TO_LONGS(RFKILL_TYPE_MAX)]; - -static BLOCKING_NOTIFIER_HEAD(rfkill_notifier_list); - - -/** - * register_rfkill_notifier - Add notifier to rfkill notifier chain - * @nb: pointer to the new entry to add to the chain - * - * See blocking_notifier_chain_register() for return value and further - * observations. - * - * Adds a notifier to the rfkill notifier chain. The chain will be - * called with a pointer to the relevant rfkill structure as a parameter, - * refer to include/linux/rfkill.h for the possible events. - * - * Notifiers added to this chain are to always return NOTIFY_DONE. This - * chain is a blocking notifier chain: notifiers can sleep. - * - * Calls to this chain may have been done through a workqueue. One must - * assume unordered asynchronous behaviour, there is no way to know if - * actions related to the event that generated the notification have been - * carried out already. - */ -int register_rfkill_notifier(struct notifier_block *nb) -{ - BUG_ON(!nb); - return blocking_notifier_chain_register(&rfkill_notifier_list, nb); -} -EXPORT_SYMBOL_GPL(register_rfkill_notifier); - -/** - * unregister_rfkill_notifier - remove notifier from rfkill notifier chain - * @nb: pointer to the entry to remove from the chain - * - * See blocking_notifier_chain_unregister() for return value and further - * observations. - * - * Removes a notifier from the rfkill notifier chain. - */ -int unregister_rfkill_notifier(struct notifier_block *nb) -{ - BUG_ON(!nb); - return blocking_notifier_chain_unregister(&rfkill_notifier_list, nb); -} -EXPORT_SYMBOL_GPL(unregister_rfkill_notifier); +static bool rfkill_epo_lock_active; static void rfkill_led_trigger(struct rfkill *rfkill, @@ -123,12 +79,9 @@ static void rfkill_led_trigger_activate(struct led_classdev *led) } #endif /* CONFIG_RFKILL_LEDS */ -static void notify_rfkill_state_change(struct rfkill *rfkill) +static void rfkill_uevent(struct rfkill *rfkill) { - rfkill_led_trigger(rfkill, rfkill->state); - blocking_notifier_call_chain(&rfkill_notifier_list, - RFKILL_STATE_CHANGED, - rfkill); + kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE); } static void update_rfkill_state(struct rfkill *rfkill) @@ -141,7 +94,7 @@ static void update_rfkill_state(struct rfkill *rfkill) oldstate = rfkill->state; rfkill->state = newstate; if (oldstate != newstate) - notify_rfkill_state_change(rfkill); + rfkill_uevent(rfkill); } mutex_unlock(&rfkill->mutex); } @@ -219,7 +172,7 @@ static int rfkill_toggle_radio(struct rfkill *rfkill, } if (force || rfkill->state != oldstate) - notify_rfkill_state_change(rfkill); + rfkill_uevent(rfkill); return retval; } @@ -264,11 +217,14 @@ static void __rfkill_switch_all(const enum rfkill_type type, * * Acquires rfkill_global_mutex and calls __rfkill_switch_all(@type, @state). * Please refer to __rfkill_switch_all() for details. + * + * Does nothing if the EPO lock is active. */ void rfkill_switch_all(enum rfkill_type type, enum rfkill_state state) { mutex_lock(&rfkill_global_mutex); - __rfkill_switch_all(type, state); + if (!rfkill_epo_lock_active) + __rfkill_switch_all(type, state); mutex_unlock(&rfkill_global_mutex); } EXPORT_SYMBOL(rfkill_switch_all); @@ -289,6 +245,7 @@ void rfkill_epo(void) mutex_lock(&rfkill_global_mutex); + rfkill_epo_lock_active = true; list_for_each_entry(rfkill, &rfkill_list, node) { mutex_lock(&rfkill->mutex); rfkill_toggle_radio(rfkill, RFKILL_STATE_SOFT_BLOCKED, 1); @@ -317,6 +274,7 @@ void rfkill_restore_states(void) mutex_lock(&rfkill_global_mutex); + rfkill_epo_lock_active = false; for (i = 0; i < RFKILL_TYPE_MAX; i++) __rfkill_switch_all(i, rfkill_global_states[i].default_state); mutex_unlock(&rfkill_global_mutex); @@ -324,6 +282,48 @@ void rfkill_restore_states(void) EXPORT_SYMBOL_GPL(rfkill_restore_states); /** + * rfkill_remove_epo_lock - unlock state changes + * + * Used by rfkill-input manually unlock state changes, when + * the EPO switch is deactivated. + */ +void rfkill_remove_epo_lock(void) +{ + mutex_lock(&rfkill_global_mutex); + rfkill_epo_lock_active = false; + mutex_unlock(&rfkill_global_mutex); +} +EXPORT_SYMBOL_GPL(rfkill_remove_epo_lock); + +/** + * rfkill_is_epo_lock_active - returns true EPO is active + * + * Returns 0 (false) if there is NOT an active EPO contidion, + * and 1 (true) if there is an active EPO contition, which + * locks all radios in one of the BLOCKED states. + * + * Can be called in atomic context. + */ +bool rfkill_is_epo_lock_active(void) +{ + return rfkill_epo_lock_active; +} +EXPORT_SYMBOL_GPL(rfkill_is_epo_lock_active); + +/** + * rfkill_get_global_state - returns global state for a type + * @type: the type to get the global state of + * + * Returns the current global state for a given wireless + * device type. + */ +enum rfkill_state rfkill_get_global_state(const enum rfkill_type type) +{ + return rfkill_global_states[type].current_state; +} +EXPORT_SYMBOL_GPL(rfkill_get_global_state); + +/** * rfkill_force_state - Force the internal rfkill radio state * @rfkill: pointer to the rfkill class to modify. * @state: the current radio state the class should be forced to. @@ -357,7 +357,7 @@ int rfkill_force_state(struct rfkill *rfkill, enum rfkill_state state) rfkill->state = state; if (state != oldstate) - notify_rfkill_state_change(rfkill); + rfkill_uevent(rfkill); mutex_unlock(&rfkill->mutex); @@ -431,9 +431,15 @@ static ssize_t rfkill_state_store(struct device *dev, state != RFKILL_STATE_SOFT_BLOCKED) return -EINVAL; - if (mutex_lock_interruptible(&rfkill->mutex)) - return -ERESTARTSYS; - error = rfkill_toggle_radio(rfkill, state, 0); + error = mutex_lock_killable(&rfkill->mutex); + if (error) + return error; + + if (!rfkill_epo_lock_active) + error = rfkill_toggle_radio(rfkill, state, 0); + else + error = -EPERM; + mutex_unlock(&rfkill->mutex); return error ? error : count; @@ -472,12 +478,12 @@ static ssize_t rfkill_claim_store(struct device *dev, * Take the global lock to make sure the kernel is not in * the middle of rfkill_switch_all */ - error = mutex_lock_interruptible(&rfkill_global_mutex); + error = mutex_lock_killable(&rfkill_global_mutex); if (error) return error; if (rfkill->user_claim != claim) { - if (!claim) { + if (!claim && !rfkill_epo_lock_active) { mutex_lock(&rfkill->mutex); rfkill_toggle_radio(rfkill, rfkill_global_states[rfkill->type].current_state, @@ -511,24 +517,48 @@ static void rfkill_release(struct device *dev) #ifdef CONFIG_PM static int rfkill_suspend(struct device *dev, pm_message_t state) { + struct rfkill *rfkill = to_rfkill(dev); + /* mark class device as suspended */ if (dev->power.power_state.event != state.event) dev->power.power_state = state; + /* store state for the resume handler */ + rfkill->state_for_resume = rfkill->state; + return 0; } static int rfkill_resume(struct device *dev) { struct rfkill *rfkill = to_rfkill(dev); + enum rfkill_state newstate; if (dev->power.power_state.event != PM_EVENT_ON) { mutex_lock(&rfkill->mutex); dev->power.power_state.event = PM_EVENT_ON; - /* restore radio state AND notify everybody */ - rfkill_toggle_radio(rfkill, rfkill->state, 1); + /* + * rfkill->state could have been modified before we got + * called, and won't be updated by rfkill_toggle_radio() + * in force mode. Sync it FIRST. + */ + if (rfkill->get_state && + !rfkill->get_state(rfkill->data, &newstate)) + rfkill->state = newstate; + + /* + * If we are under EPO, kick transmitter offline, + * otherwise restore to pre-suspend state. + * + * Issue a notification in any case + */ + rfkill_toggle_radio(rfkill, + rfkill_epo_lock_active ? + RFKILL_STATE_SOFT_BLOCKED : + rfkill->state_for_resume, + 1); mutex_unlock(&rfkill->mutex); } @@ -540,28 +570,6 @@ static int rfkill_resume(struct device *dev) #define rfkill_resume NULL #endif -static int rfkill_blocking_uevent_notifier(struct notifier_block *nb, - unsigned long eventid, - void *data) -{ - struct rfkill *rfkill = (struct rfkill *)data; - - switch (eventid) { - case RFKILL_STATE_CHANGED: - kobject_uevent(&rfkill->dev.kobj, KOBJ_CHANGE); - break; - default: - break; - } - - return NOTIFY_DONE; -} - -static struct notifier_block rfkill_blocking_uevent_nb = { - .notifier_call = rfkill_blocking_uevent_notifier, - .priority = 0, -}; - static int rfkill_dev_uevent(struct device *dev, struct kobj_uevent_env *env) { struct rfkill *rfkill = to_rfkill(dev); @@ -711,7 +719,7 @@ static void rfkill_led_trigger_register(struct rfkill *rfkill) int error; if (!rfkill->led_trigger.name) - rfkill->led_trigger.name = rfkill->dev.bus_id; + rfkill->led_trigger.name = dev_name(&rfkill->dev); if (!rfkill->led_trigger.activate) rfkill->led_trigger.activate = rfkill_led_trigger_activate; error = led_trigger_register(&rfkill->led_trigger); @@ -752,8 +760,7 @@ int __must_check rfkill_register(struct rfkill *rfkill) "badly initialized rfkill struct\n")) return -EINVAL; - snprintf(dev->bus_id, sizeof(dev->bus_id), - "rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1); + dev_set_name(dev, "rfkill%ld", (long)atomic_inc_return(&rfkill_no) - 1); rfkill_led_trigger_register(rfkill); @@ -833,6 +840,7 @@ int rfkill_set_default(enum rfkill_type type, enum rfkill_state state) if (!test_and_set_bit(type, rfkill_states_lockdflt)) { rfkill_global_states[type].default_state = state; + rfkill_global_states[type].current_state = state; error = 0; } else error = -EPERM; @@ -864,14 +872,11 @@ static int __init rfkill_init(void) return error; } - register_rfkill_notifier(&rfkill_blocking_uevent_nb); - return 0; } static void __exit rfkill_exit(void) { - unregister_rfkill_notifier(&rfkill_blocking_uevent_nb); class_unregister(&rfkill_class); } |