Messages in this thread | | | From | Geert Uytterhoeven <> | Date | Wed, 30 Mar 2022 12:02:07 +0200 | Subject | Re: [PATCH v2 02/13] gpiolib: Introduce gpiochip_node_count() helper |
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Hi Andy,
On Tue, Mar 29, 2022 at 5:29 PM Andy Shevchenko <andriy.shevchenko@linux.intel.com> 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@linux.intel.com>
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@glider.be> Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Gr{oetje,eeting}s,
Geert
-- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
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
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