linux-kernel - Re: [PATCH v7 12/13] backlight: pwm_bl: Use 64-bit division macros for period and duty cycle

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Message-ID: <20200310181242.GA31738@codeaurora.org>
Date:   Tue, 10 Mar 2020 11:12:42 -0700
From:   Guru Das Srinagesh <gurus@...eaurora.org>
To:     Daniel Thompson <daniel.thompson@...aro.org>
Cc:     linux-pwm@...r.kernel.org,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König <uwe@...ine-koenig.org>,
        Subbaraman Narayanamurthy <subbaram@...eaurora.org>,
        linux-kernel@...r.kernel.org, Lee Jones <lee.jones@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org
Subject: Re: [PATCH v7 12/13] backlight: pwm_bl: Use 64-bit division macros
 for period and duty cycle

On Tue, Mar 10, 2020 at 02:34:32PM +0000, Daniel Thompson wrote:
> This patch looks like it is a tiny change to get the pwm_backlight to
> perform 64-bit division. Most of the above text is completely irrelevant
> to the change contained in this patch. No need to justify the change in
> the PWM structures here since that can go in the patch that changes
> those structures.  Just describe what this patch does, perhaps something
> like the following:
> 
>     The PWM API will shortly switch the state.period and
>     state.duty_cycle fields to 64-bit values. Make pwm_bl
>     ready for this transition by adopting 64-bit division
>     macros.

Will update the commit text accordingly.

> Also please copy the backlight maintainers into the covering letter. It
> is useful to place patches like this into context.

Will do.

Thank you.

Guru Das.