[PATCHv2 10/10] rfkill: Notify userspace of airplane-mode state changes
From: "João Paulo Rechi Vita" <jprvita@gmail.com>
Date: 2016-02-22 16:37:17
Also in:
linux-api, linux-wireless, lkml, platform-driver-x86
Subsystem:
documentation, rfkill, the rest · Maintainers:
Jonathan Corbet, Johannes Berg, Linus Torvalds
Signed-off-by: João Paulo Rechi Vita <redacted> --- Documentation/rfkill.txt | 3 +++ include/uapi/linux/rfkill.h | 4 ++-- net/rfkill/core.c | 13 +++++++++++++ 3 files changed, 18 insertions(+), 2 deletions(-)
diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt
index 9dbe3fc..588b4bf 100644
--- a/Documentation/rfkill.txt
+++ b/Documentation/rfkill.txt@@ -133,5 +133,8 @@ applications to take control. Changes to the airplane-mode indicator state can be made using RFKILL_OP_AIRPLANE_MODE_INDICATOR_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/include/uapi/linux/rfkill.h b/include/uapi/linux/rfkill.h
index 36e0770..2ccb02f 100644
--- a/include/uapi/linux/rfkill.h
+++ b/include/uapi/linux/rfkill.h@@ -63,8 +63,8 @@ enum rfkill_type { * are hot-plugged later. * @RFKILL_OP_AIRPLANE_MODE_INDICATOR_ACQUIRE: userspace acquires control of * the airplane-mode indicator. - * @RFKILL_OP_AIRPLANE_MODE_INDICATOR_CHANGE: userspace changes the - * airplane-mode indicator state. + * @RFKILL_OP_AIRPLANE_MODE_INDICATOR_CHANGE: the airplane-mode indicator state + * changed -- userspace changes the airplane-mode indicator state. */ enum rfkill_operation { RFKILL_OP_ADD = 0,
diff --git a/net/rfkill/core.c b/net/rfkill/core.c
index 8ea8b73..c59fd1d 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_INDICATOR_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