linux-kernel - Re: [PATCH v2 1/4] firmware: arm_scmi: Bypass setting fwnode for scmi cpufreq

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Message-ID: <7a29ec8f-fef8-4f1c-a2eb-16a63f2b820c@stanley.mountain>
Date: Wed, 5 Feb 2025 15:45:00 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: "Peng Fan (OSS)" <peng.fan@....nxp.com>
Cc: Sudeep Holla <sudeep.holla@....com>,
	Cristian Marussi <cristian.marussi@....com>,
	Saravana Kannan <saravanak@...gle.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	Dong Aisheng <aisheng.dong@....com>,
	Fabio Estevam <festevam@...il.com>, Shawn Guo <shawnguo@...nel.org>,
	Jacky Bai <ping.bai@....com>,
	Pengutronix Kernel Team <kernel@...gutronix.de>,
	Sascha Hauer <s.hauer@...gutronix.de>, arm-scmi@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-gpio@...r.kernel.org, imx@...ts.linux.dev,
	Peng Fan <peng.fan@....com>
Subject: Re: [PATCH v2 1/4] firmware: arm_scmi: Bypass setting fwnode for
 scmi cpufreq

On Mon, Jan 20, 2025 at 03:13:29PM +0800, Peng Fan (OSS) wrote:
> diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c
> index 2c853c84b58f530898057e4ab274ba76070de05e..7850eb7710f499888d32aebf5d99df63db8bfa26 100644
> --- a/drivers/firmware/arm_scmi/bus.c
> +++ b/drivers/firmware/arm_scmi/bus.c
> @@ -344,6 +344,21 @@ static void __scmi_device_destroy(struct scmi_device *scmi_dev)
>  	device_unregister(&scmi_dev->dev);
>  }
>  
> +static int
> +__scmi_device_set_node(struct scmi_device *scmi_dev, struct device_node *np,
> +		       int protocol, const char *name)
> +{
> +	/* cpufreq device does not need to be supplier from devlink perspective */
> +	if ((protocol == SCMI_PROTOCOL_PERF) && !strcmp(name, "cpufreq")) {

I don't love this...  It seems like an hack.  Could we put a flag
somewhere instead?  Perhaps in scmi_device?  (I'm just saying that
because that's what we're passing to this function).

regards,
dan carpenter