Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934199AbbENPY0 (ORCPT ); Thu, 14 May 2015 11:24:26 -0400 Received: from smtp48.i.mail.ru ([94.100.177.108]:43664 "EHLO smtp48.i.mail.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933430AbbENPYN (ORCPT ); Thu, 14 May 2015 11:24:13 -0400 Message-ID: <5554BE12.7050209@list.ru> Date: Thu, 14 May 2015 18:24:02 +0300 From: Stas Sergeev User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: linux-leds@vger.kernel.org CC: Linux kernel , Bryan Wu , Richard Purdie , Jacek Anaszewski , Kyungmin Park , Stas Sergeev Subject: [PATCH v2] leds: fix brightness changing when software blinking is active Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Spam: Not detected X-Mras: Ok Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2315 Lines: 66 The following sequence: echo timer >/sys/class/leds//trigger echo 1 >/sys/class/leds//brightness should change the ON brightness for blinking. The function led_set_brightness() was mistakenly initiating the delayed blink stop procedure, which resulted in no blinking with the timer trigger still active. This patch fixes the problem by changing led_set_brightness() to not initiate the delayed blink stop when brightness is not 0. CC: Bryan Wu CC: Richard Purdie CC: Jacek Anaszewski CC: Kyungmin Park CC: linux-leds@vger.kernel.org CC: linux-kernel@vger.kernel.org Signed-off-by: Stas Sergeev --- drivers/leds/led-class.c | 5 +++++ drivers/leds/led-core.c | 5 +++-- 2 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/leds/led-class.c b/drivers/leds/led-class.c index 795ec99..65c2c80 100644 --- a/drivers/leds/led-class.c +++ b/drivers/leds/led-class.c @@ -121,6 +121,11 @@ static void led_timer_function(unsigned long data) brightness = led_get_brightness(led_cdev); if (!brightness) { /* Time to switch the LED on. */ + if (led_cdev->delayed_set_value) { + led_cdev->blink_brightness = + led_cdev->delayed_set_value; + led_cdev->delayed_set_value = 0; + } brightness = led_cdev->blink_brightness; delay = led_cdev->blink_delay_on; } else { diff --git a/drivers/leds/led-core.c b/drivers/leds/led-core.c index 356e851..a90dd26 100644 --- a/drivers/leds/led-core.c +++ b/drivers/leds/led-core.c @@ -119,10 +119,11 @@ void led_set_brightness(struct led_classdev *led_cdev, { int ret = 0; - /* delay brightness setting if need to stop soft-blink timer */ + /* delay brightness if soft-blink is active */ if (led_cdev->blink_delay_on || led_cdev->blink_delay_off) { led_cdev->delayed_set_value = brightness; - schedule_work(&led_cdev->set_brightness_work); + if (brightness == LED_OFF) + schedule_work(&led_cdev->set_brightness_work); return; } -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/