linux-kernel - Re: [PATCH v1 03/28] leds: el15203000: Give better margin for usleep

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Date:   Fri, 28 May 2021 13:45:31 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Pavel Machek <pavel@....cz>
Cc:     Amireddy Mallikarjuna reddy <mallikarjunax.reddy@...ux.intel.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Marek Behún <marek.behun@....cz>,
        Abanoub Sameh <abanoubsameh8@...il.com>,
        Dan Murphy <dmurphy@...com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 03/28] leds: el15203000: Give better margin for
 usleep_range()

On Fri, May 28, 2021 at 12:04:40PM +0200, Pavel Machek wrote:
> On Mon 2021-05-10 12:50:20, Andy Shevchenko wrote:
> > 1 microsecond with 20 millisecond parameter is too low margin for
> > usleep_range(). Give 100 to make scheduler happier.
> > 
> > While at it, fix indentation in cases where EL_FW_DELAY_USEC is in use.
> > In the loop, move it to the end to avoid a conditional.
> 
> Its not like unhappy schedulers are problem...

Any hints then? To me it sounds like torturing scheduler is the real problem
and that's why scheduler is unhappy.

-- 
With Best Regards,
Andy Shevchenko