linux-kernel - Re: [PATCH v2 7/7] backlight: gpio: use a helper variable for &pdev->dev

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Date:   Wed, 24 Jul 2019 10:26:10 +0200
From:   Bartosz Golaszewski <brgl@...ev.pl>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>,
        Lee Jones <lee.jones@...aro.org>,
        Daniel Thompson <daniel.thompson@...aro.org>,
        Jingoo Han <jingoohan1@...il.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@...sung.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-sh@...r.kernel.org,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        dri-devel@...ts.freedesktop.org, linux-fbdev@...r.kernel.org,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v2 7/7] backlight: gpio: use a helper variable for &pdev->dev

wt., 23 lip 2019 o 17:34 Andy Shevchenko
<andriy.shevchenko@...ux.intel.com> napisał(a):
>
> On Tue, Jul 23, 2019 at 08:29:52AM +0200, Bartosz Golaszewski wrote:
> > pon., 22 lip 2019 o 18:09 Andy Shevchenko
> > <andriy.shevchenko@...ux.intel.com> napisał(a):
> > >
> > > On Mon, Jul 22, 2019 at 05:03:02PM +0200, Bartosz Golaszewski wrote:
> > > > From: Bartosz Golaszewski <bgolaszewski@...libre.com>
> > > >
> > > > Instead of dereferencing pdev each time, use a helper variable for
> > > > the associated device pointer.
> > >
> > > >  static int gpio_backlight_probe(struct platform_device *pdev)
> > > >  {
> > > > -     struct gpio_backlight_platform_data *pdata =
> > > > -             dev_get_platdata(&pdev->dev);
> > > > +     struct gpio_backlight_platform_data *pdata;
> > > >       struct backlight_properties props;
> > > >       struct backlight_device *bl;
> > > >       struct gpio_backlight *gbl;
> > > >       enum gpiod_flags flags;
> > > > +     struct device *dev;
> > >
> > > Can't we do
> > >
> > >         struct device dev = &pdev->dev;
> > >         struct gpio_backlight_platform_data *pdata = dev_get_platdata(dev);
> > >
> > > ? It fits 80 nicely.
> > >
> >
> > IMO it's more readable like that with the reverse christmas tree layout.
>
> It makes more churn in the original code and for initializers the order is
> defined by its nature.
>
> --
> With Best Regards,
> Andy Shevchenko
>
>

Fair enough, I changed it in v3.

Bart