linux-kernel - Re: [PATCH v3 09/11] leds: max77650: add LEDs support

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Message-ID: <20190212121032.GC25613@amd>
Date:   Tue, 12 Feb 2019 13:10:32 +0100
From:   Pavel Machek <pavel@....cz>
To:     Dan Murphy <dmurphy@...com>
Cc:     Jacek Anaszewski <jacek.anaszewski@...il.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sre@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-input@...r.kernel.org,
        linux-leds@...r.kernel.org, linux-pm@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v3 09/11] leds: max77650: add LEDs support

Hi!


> >> +static struct max77650_led *max77650_to_led(struct led_classdev *cdev)
> >> +{
> >> +    return container_of(cdev, struct max77650_led, cdev);
> >> +}
> >> +
> >> +static int max77650_led_brightness_set(struct led_classdev *cdev,
> >> +                       enum led_brightness brightness)
> >> +{
> >> +    struct max77650_led *led = max77650_to_led(cdev);
> >> +    int val, mask;
> >> +
> 
> The register value and bits are only 8 bit why an int?

int is word size CPU prefers. It is ok here. If you force u8, it may
actually result in slower/bigger code.
									Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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