Hi Andy,
On Tue, Mar 29, 2022 at 5:29 PM Andy Shevchenko
<andriy.shevchenko@xxxxxxxxxxxxxxx> wrote:
> The gpiochip_node_count() helper iterates over the device child nodes that
> have the "gpio-controller" property set. It returns the number of such nodes
> under a given device.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Thanks for your patch!
> --- a/include/linux/gpio/driver.h
> +++ b/include/linux/gpio/driver.h
> @@ -755,4 +755,16 @@ static inline void gpiochip_unlock_as_irq(struct gpio_chip *gc,
> device_for_each_child_node(dev, child) \
> if (!fwnode_property_present(child, "gpio-controller")) {} else
>
> +static inline unsigned int gpiochip_node_count(struct device *dev)
> +{
> + struct fwnode_handle *child;
> + unsigned int count;
Preinitialize to zero?
> +
> + count = 0;
> + for_each_gpiochip_node(dev, child)
> + count++;
> +
> + return count;
> +}
> +
> #endif /* __LINUX_GPIO_DRIVER_H */
Regardless:
Reviewed-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
