linux-kernel - Re: [PATCH v2] leds: fix brightness changing when software blinking is active

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Date:	Fri, 15 May 2015 16:41:04 +0200
From:	Jacek Anaszewski <j.anaszewski@...sung.com>
To:	Stas Sergeev <stsp@...t.ru>
Cc:	linux-leds@...r.kernel.org,
	Linux kernel <linux-kernel@...r.kernel.org>,
	Bryan Wu <cooloney@...il.com>,
	Richard Purdie <rpurdie@...ys.net>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Stas Sergeev <stsp@...rs.sourceforge.net>
Subject: Re: [PATCH v2] leds: fix brightness changing when software blinking is
 active

On 05/15/2015 04:11 PM, Stas Sergeev wrote:
> 15.05.2015 17:09, Jacek Anaszewski пишет:
>> On 05/15/2015 10:12 AM, Jacek Anaszewski wrote:
>>> Hi Stas,
>>>
>>> On 05/14/2015 05:24 PM, Stas Sergeev wrote:
>>>>
>>>> The following sequence:
>>>> echo timer >/sys/class/leds/<name>/trigger
>>>> echo 1 >/sys/class/leds/<name>/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.
>>
>> This commit message is not valid for this version of the patch.
> Why do you think so?
> ---
> -		schedule_work(&led_cdev->set_brightness_work);
> +		if (brightness == LED_OFF)
> +			schedule_work(&led_cdev->set_brightness_work);
> ---
>
> LED_OFF is a 0 define.
>

You're right, I was just looking at the issue from different
perspective.

-- 
Best Regards,
Jacek Anaszewski
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