[PATCH v2 2/7] backlight: gpio: simplify the platform data handling

[Bartosz Golaszewski]

pon., 22 lip 2019 o 18:06 Andy Shevchenko
<andriy.shevchenko at linux.intel.com> napisał(a):
>
> On Mon, Jul 22, 2019 at 05:02:57PM +0200, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bgolaszewski at baylibre.com>
> >
> > Now that the last user of platform data (sh ecovec24) defines a proper
> > GPIO lookup and sets the 'default-on' device property, we can drop the
> > platform_data-specific GPIO handling and unify a big chunk of code.
> >
> > The only field used from the platform data is now the fbdev pointer.
>
> > -static int gpio_backlight_probe_dt(struct platform_device *pdev,
> > -                                struct gpio_backlight *gbl)
> > -{
> > -     struct device *dev = &pdev->dev;
> > -     enum gpiod_flags flags;
> > -     int ret;
> > -
> > -     gbl->def_value = device_property_read_bool(dev, "default-on");
> > -     flags = gbl->def_value ? GPIOD_OUT_HIGH : GPIOD_OUT_LOW;
> > -
> > -     gbl->gpiod = devm_gpiod_get(dev, NULL, flags);
> > -     if (IS_ERR(gbl->gpiod)) {
> > -             ret = PTR_ERR(gbl->gpiod);
> > -
> > -             if (ret != -EPROBE_DEFER) {
> > -                     dev_err(dev,
> > -                             "Error: The gpios parameter is missing or invalid.\n");
> > -             }
> > -             return ret;
> > -     }
> > -
> > -     return 0;
> > -}
>
> Why not leave this function (perhaps with different name)?
>
> --
> With Best Regards,
> Andy Shevchenko
>
>

Why would we do that if the entire probe() function is now less than
50 lines long? Also: it gets inlined by the compiler anyway. It
doesn't make sense IMO.

Bart