linux-kernel - Re: [PATCH v4 05/11] pwm: add support for sl28cpld PWM controller

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Message-ID: <b3324f5c1c908edc89a9cd2676644dfe@walle.cc>
Date:   Fri, 05 Jun 2020 20:17:59 +0200
From:   Michael Walle <michael@...le.cc>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
        linux-pwm@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>,
        Rob Herring <robh+dt@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Shawn Guo <shawnguo@...nel.org>, Li Yang <leoyang.li@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>, Mark Brown <broonie@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: Re: [PATCH v4 05/11] pwm: add support for sl28cpld PWM controller

Am 2020-06-05 10:49, schrieb Lee Jones:
[..]
>> +static inline struct sl28cpld_pwm *to_sl28cpld_pwm(struct pwm_chip 
>> *chip)
>> +{
>> +	return container_of(chip, struct sl28cpld_pwm, pwm_chip);
>> +}
> 
> Why not save yourself the trouble and just:
> 
>   struct sl28cpld_pwm *pwm = dev_get_drvdata(chip->dev);

Is there a reason why not a single pwm driver uses something like that?

-michael