Return-path: Received: from mail-qk0-f193.google.com ([209.85.220.193]:33916 "EHLO mail-qk0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754029AbcEBOj3 (ORCPT ); Mon, 2 May 2016 10:39:29 -0400 From: "=?UTF-8?q?Jo=C3=A3o=20Paulo=20Rechi=20Vita?=" To: Johannes Berg Cc: "David S. Miller" , Darren Hart , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-api@vger.kernel.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux@endlessm.com, =?UTF-8?q?Jo=C3=A3o=20Paulo=20Rechi=20Vita?= , =?UTF-8?q?Jo=C3=A3o=20Paulo=20Rechi=20Vita?= Subject: [RESEND PATCH 3/3] rfkill: Notify userspace of airplane-mode state changes Date: Mon, 2 May 2016 10:39:08 -0400 Message-Id: <1462199948-6424-4-git-send-email-jprvita@endlessm.com> (sfid-20160502_164200_639806_1E354AD6) In-Reply-To: <1462199948-6424-1-git-send-email-jprvita@endlessm.com> References: <1462199948-6424-1-git-send-email-jprvita@endlessm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-wireless-owner@vger.kernel.org List-ID: From: João Paulo Rechi Vita Signed-off-by: João Paulo Rechi Vita --- 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 95824b3..c4bbd19 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