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Subject[PATCH 9/9] rfkill: Notify userspace of airplane-mode state changes
Date
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
---
Documentation/rfkill.txt | 3 +++
net/rfkill/core.c | 13 +++++++++++++
2 files changed, 16 insertions(+)

diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt
index aa6e014..5248812 100644
--- a/Documentation/rfkill.txt
+++ b/Documentation/rfkill.txt
@@ -133,5 +133,8 @@ it available for other applications to take control. Changes to the
airplane-mode indicator state can be made using RFKILL_OP_AIRPLANE_MODE_CHANGE,
passing the new value in the 'soft' field of 'struct rfkill_event'.

+This same API is also used to provide userspace with notifications of changes
+to airplane-mode indicator state.
+

For further details consult Documentation/ABI/stable/sysfs-class-rfkill.
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 8067701..abbb8f7 100644
--- a/net/rfkill/core.c
+++ b/net/rfkill/core.c
@@ -131,7 +131,20 @@ static struct led_trigger rfkill_apm_led_trigger;

static void rfkill_apm_led_trigger_event(bool state)
{
+ struct rfkill_data *data;
+ struct rfkill_int_event *ev;
+
led_trigger_event(&rfkill_apm_led_trigger, state ? LED_FULL : LED_OFF);
+
+ list_for_each_entry(data, &rfkill_fds, list) {
+ ev = kzalloc(sizeof(*ev), GFP_KERNEL);
+ if (!ev)
+ continue;
+ ev->ev.op = RFKILL_OP_AIRPLANE_MODE_CHANGE;
+ ev->ev.soft = state;
+ list_add_tail(&ev->list, &data->events);
+ wake_up_interruptible(&data->read_wait);
+ }
}

static void rfkill_apm_led_trigger_activate(struct led_classdev *led)
--
2.5.0
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