Re: [PATCH v2 7/9] gpio: mockup: pass the chip label as device property

Andy Shevchenko
2020-09-28T13:00:35Z

On Mon, Sep 28, 2020 at 12:41:53PM +0200, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
>
> While we do check the "chip-name" property in probe(), we never actually
> use it. Let's pass the chip label to the driver using device properties
> as we'll want to allow users to define their own once dynamically
> created chips are supported.
>
> The property is renamed to "chip-label" to not cause any confusion with
> the actual chip name which is of the form: "gpiochipX".
>
> If the "chip-label" property is missing, let's do what most devices in
> drivers/gpio/ do and use dev_name().

...

> + snprintf(chip_label, sizeof(chip_label),
> + "gpio-mockup-%c", i + 'A');
> + properties[prop++] = PROPERTY_ENTRY_STRING("chip-label",
> + chip_label);

You added new property, now count is up to 4. But at the same time

#define GPIO_MOCKUP_MAX_PROP 4

how do you avoid overflow?

--
With Best Regards,
Andy Shevchenko