linux-kernel - RE: [PATCH v2] platform: use fwnode_irq_get_byname instead of of_irq_get

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Date:   Fri, 11 Nov 2022 08:30:46 +0000
From:   Soha Jin <soha@...u.info>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC:     "Rafael J. Wysocki" <rafael@...nel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Wende Tan <twd2.me@...il.com>
Subject: RE: [PATCH v2] platform: use fwnode_irq_get_byname instead of
 of_irq_get_byname to get irq

> -----Original Message-----
> From: Soha Jin <soha@...u.info>
> Sent: Saturday, October 29, 2022 12:41 AM
> 
> Not only platform devices described by OF have named interrupts, but
> devices described by ACPI also have named interrupts. The fwnode is an
> abstraction to different standards, and using fwnode_irq_get_byname can
> support more devices.
> 
> Moreover, when CONFIG_OF_IRQ is not enabled, there will be a stub method
> always returning 0, the if statement can be removed safely.
> 
> Signed-off-by: Soha Jin <soha@...u.info>
> Tested-by: Wende Tan <twd2.me@...il.com>
> ---
>  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
> 51bb2289865c..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 (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node) {
> -		ret = of_irq_get_byname(dev->dev.of_node, 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
> 

Hello Greg,

I noticed the original patch is merged into -next branch, but as I said in
the mail yesterday (maybe you did not see it), I already composed a v2
patch 2 weeks ago. Except the formatting fix, this patch also removed a
useless if-branch.

Are there any chance to correct this mistake?

Regards,
Soha