linux-kernel - Re: [PATCH v1 3/3] gpiolib: Move gpiodevice

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Date:   Fri, 10 Mar 2023 19:01:26 +0200
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
Cc:     Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>
Subject: Re: [PATCH v1 3/3] gpiolib: Move gpiodevice_*() to gpiodev namespace

On Fri, Mar 10, 2023 at 05:48:39PM +0100, Bartosz Golaszewski wrote:
> On Thu, Mar 9, 2023 at 7:52 PM Andy Shevchenko
> <andriy.shevchenko@...ux.intel.com> wrote:
> > On Wed, Mar 08, 2023 at 11:49:53AM +0100, Bartosz Golaszewski wrote:
> > > On Tue, Mar 7, 2023 at 7:25 PM Andy Shevchenko
> > > <andriy.shevchenko@...ux.intel.com> wrote:
> > > >
> > > > The functions that operates on the same device object would
> > > > have the same namespace for better code understanding and
> > > > maintenance.

...

> > > > -static void gpiodevice_release(struct device *dev)
> > > > +static void gpiodev_release(struct device *dev)
> > > >  {
> > > >         struct gpio_device *gdev = to_gpio_device(dev);
> > > >         unsigned long flags;
> > > > @@ -617,7 +617,7 @@ static int gpiochip_setup_dev(struct gpio_device *gdev)
> > > >                 return ret;
> > > >
> > > >         /* From this point, the .release() function cleans up gpio_device */
> > > > -       gdev->dev.release = gpiodevice_release;
> > > > +       gdev->dev.release = gpiodev_release;
> > > >
> > > >         ret = gpiochip_sysfs_register(gdev);
> > > >         if (ret)
> >
> > > But the only other function that's in the gpiodev_ namespace operates
> > > on struct gpio_device so that change doesn't make much sense to me.
> >
> > I'm not sure I understood the comment.
> > After this change we will have
> >
> > static int gpiodev_add_to_list(struct gpio_device *gdev)
> > static void gpiodev_release(struct device *dev)
> >
> 
> Do you want to use the same prefix for both because struct device in
> the latter is embedded in struct gpio_device in the former?

Yes, the logic to have logically grouped namespace for these APIs.
Meaning on what they are taking as an effective object to proceed
with.

> > There are also gpio_device_*() I have noticed, so may be these should be
> > actually in that namespace?
> >
> > And we have
> >
> > static int gpiochip_setup_dev(struct gpio_device *gdev)
> > static void gpiolib_dbg_show(struct seq_file *s, struct gpio_device *gdev)
> >
> > That said, what do you think is the best to make this more consistent?

-- 
With Best Regards,
Andy Shevchenko