RE: [PATCH 2/2] gpio: bcm-kona: use platform_irq_count

[Peng Fan <peng.fan@nxp.com>]

> Subject: Re: [PATCH 2/2] gpio: bcm-kona: use platform_irq_count
> 
> On Tue, Dec 03, 2019 at 06:04:27AM +0000, Peng Fan wrote:
> > From: Peng Fan <peng.fan@nxp.com>
> >
> > Use platform_irq_count to replace of_irq_count
> >
> > Signed-off-by: Peng Fan <peng.fan@nxp.com>
> > ---
> >
> > V1:
> >  Code inspection, not tested
> >
> >  drivers/gpio/gpio-bcm-kona.c | 3 +--
> >  1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/gpio/gpio-bcm-kona.c
> > b/drivers/gpio/gpio-bcm-kona.c index 4122683eb1f9..c50721980a7c
> 100644
> > --- a/drivers/gpio/gpio-bcm-kona.c
> > +++ b/drivers/gpio/gpio-bcm-kona.c
> > @@ -19,7 +19,6 @@
> >  #include <linux/io.h>
> >  #include <linux/gpio/driver.h>
> >  #include <linux/of_device.h>
> > -#include <linux/of_irq.h>
> >  #include <linux/init.h>
> >  #include <linux/irqdomain.h>
> >  #include <linux/irqchip/chained_irq.h> @@ -586,7 +585,7 @@ static int
> > bcm_kona_gpio_probe(struct platform_device *pdev)
> >
> >  	kona_gpio->gpio_chip = template_chip;
> >  	chip = &kona_gpio->gpio_chip;
> > -	kona_gpio->num_bank = of_irq_count(dev->of_node);
> > +	kona_gpio->num_bank = platform_irq_count(pdev);
> 
> of_irq_count returns 0 or a positive int while platform_irq_count might return
> a negative error code. This needs handling. Also I wonder why
> platform_irq_count() is better than of_irq_count() which would be good to
> describe in the commit log.

Inspired from https://lkml.org/lkml/2015/11/18/466
From Rob:
"
So I started looking at why you are using of_irq_count which drivers
shouldn't need to. In patch 5 you use it to allocate memory to store
the irq names, then use them here...
"

Is this ok?

Thanks,
Peng.

> 
> Best regards
> Uwe
> 
> --
> Pengutronix e.K.                           | Uwe Kleine-König
> |
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