linux-kernel - RE: [PATCH driver-core-next] platform: remove useless if-branch in __platform_get_irq

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Date:   Wed, 30 Nov 2022 16:13:41 +0000
From:   Soha Jin <soha@...u.info>
To:     Soha Jin <soha@...u.info>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     "Rafael J. Wysocki" <rafael@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH driver-core-next] platform: remove useless if-branch in
 __platform_get_irq_byname()

> -----Original Message-----
> From: Soha Jin <soha@...u.info>
> Sent: Friday, November 11, 2022 5:46 PM
> 
> When CONFIG_OF_IRQ is not enabled, there will be a stub method that always
> returns 0 when getting IRQ. Thus, the if-branch can be removed safely.
> 
> Fixes: d4ad017d6345 ("platform: use fwnode_irq_get_byname instead of
> of_irq_get_byname to get irq")
> Signed-off-by: Soha Jin <soha@...u.info>
> ---
>  drivers/base/platform.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/base/platform.c b/drivers/base/platform.c index
> 968f3d71eeab..6cd7fd478c5f 100644
> --- a/drivers/base/platform.c
> +++ b/drivers/base/platform.c
> @@ -441,11 +441,9 @@ static int __platform_get_irq_byname(struct
> platform_device *dev,
>  	struct resource *r;
>  	int ret;
> 
> -	if (!dev->dev.of_node || IS_ENABLED(CONFIG_OF_IRQ)) {
> -		ret = fwnode_irq_get_byname(dev_fwnode(&dev->dev), name);
> -		if (ret > 0 || ret == -EPROBE_DEFER)
> -			return ret;
> -	}
> +	ret = fwnode_irq_get_byname(dev_fwnode(&dev->dev), name);
> +	if (ret > 0 || ret == -EPROBE_DEFER)
> +		return ret;
> 
>  	r = platform_get_resource_byname(dev, IORESOURCE_IRQ, name);
>  	if (r) {
> --
> 2.30.2
> 

PING.

Regards,
Soha