linux-kernel - Re: [PATCH v1 1/2] gpio: dwapb: Drop redundant check in dwapb_irq_set

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Date:   Wed, 2 Jun 2021 17:07:19 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        linux-gpio@...r.kernel.org, linux-kernel@...r.kernel.org,
        Hoan Tran <hoan@...amperecomputing.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <bgolaszewski@...libre.com>
Subject: Re: [PATCH v1 1/2] gpio: dwapb: Drop redundant check in
 dwapb_irq_set_type()

On Tue, Jun 01, 2021 at 07:21:27PM +0300, Andy Shevchenko wrote:
> For more than 15 years we may not get into ->irq_set_type()
> without any meaningful type provided.
> 
> Drop redundant check in dwapb_irq_set_type().
> 
> See the commit e76de9f8eb67 ("[PATCH] genirq: add SA_TRIGGER support")
> out of curiosity.

Why not. Thanks for the patch.
Acked-by: Serge Semin <fancer.lancer@...il.com>

-Sergey

> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
> ---
>  drivers/gpio/gpio-dwapb.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/drivers/gpio/gpio-dwapb.c b/drivers/gpio/gpio-dwapb.c
> index d3233cc4b76b..939701c1465e 100644
> --- a/drivers/gpio/gpio-dwapb.c
> +++ b/drivers/gpio/gpio-dwapb.c
> @@ -297,9 +297,6 @@ static int dwapb_irq_set_type(struct irq_data *d, u32 type)
>  	irq_hw_number_t bit = irqd_to_hwirq(d);
>  	unsigned long level, polarity, flags;
>  
> -	if (type & ~IRQ_TYPE_SENSE_MASK)
> -		return -EINVAL;
> -
>  	spin_lock_irqsave(&gc->bgpio_lock, flags);
>  	level = dwapb_read(gpio, GPIO_INTTYPE_LEVEL);
>  	polarity = dwapb_read(gpio, GPIO_INT_POLARITY);
> -- 
> 2.30.2
>