linux-kernel - Re: [PATCH 4/8] soc: fsl: guts: don't access of

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Message-ID: <7f10bde0-238b-42fe-93e1-0c05d489f3b1@cs-soprasteria.com>
Date: Mon, 19 Jan 2026 11:05:43 +0000
From: LEROY Christophe <christophe.leroy2@...soprasteria.com>
To: Bartosz Golaszewski <bartosz.golaszewski@....qualcomm.com>, Rob Herring
	<robh@...nel.org>, Saravana Kannan <saravanak@...nel.org>, Greg Kroah-Hartman
	<gregkh@...uxfoundation.org>, "Rafael J. Wysocki" <rafael@...nel.org>, Danilo
 Krummrich <dakr@...nel.org>, "Christophe Leroy (CS GROUP)"
	<chleroy@...nel.org>, Shawn Guo <shawnguo@...nel.org>, Sascha Hauer
	<s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>, Geert Uytterhoeven
	<geert+renesas@...der.be>, Magnus Damm <magnus.damm@...il.com>, Chen-Yu Tsai
	<wens@...nel.org>, Jernej Skrabec <jernej.skrabec@...il.com>, Samuel Holland
	<samuel@...lland.org>
CC: "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
	"linux-arm-kernel@...ts.infradead.org"
	<linux-arm-kernel@...ts.infradead.org>, "imx@...ts.linux.dev"
	<imx@...ts.linux.dev>, "linux-renesas-soc@...r.kernel.org"
	<linux-renesas-soc@...r.kernel.org>, "linux-sunxi@...ts.linux.dev"
	<linux-sunxi@...ts.linux.dev>
Subject: Re: [PATCH 4/8] soc: fsl: guts: don't access of_root directly



Le 19/01/2026 à 11:40, Bartosz Golaszewski a écrit :
> Don't access of_root directly as it reduces the build test coverage for
> this driver with COMPILE_TEST=y and OF=n. Use existing helper functions
> to retrieve the relevant information.
> 
> Suggested-by: Rob Herring <robh@...nel.org>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@....qualcomm.com>

Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@...nel.org>
Acked-by: Christophe Leroy (CS GROUP) <chleroy@...nel.org>

> ---
>   drivers/soc/fsl/guts.c | 12 +++---------
>   1 file changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/soc/fsl/guts.c b/drivers/soc/fsl/guts.c
> index 6bf3e6a980ffc67c21ed7b62b5b638e37f27454e..88ba32a40f6a27f8ffd13624e940aa0edf48586f 100644
> --- a/drivers/soc/fsl/guts.c
> +++ b/drivers/soc/fsl/guts.c
> @@ -186,7 +186,6 @@ static int __init fsl_guts_init(void)
>   	const struct fsl_soc_data *soc_data;
>   	const struct of_device_id *match;
>   	struct ccsr_guts __iomem *regs;
> -	const char *machine = NULL;
>   	struct device_node *np;
>   	bool little_endian;
>   	u64 soc_uid = 0;
> @@ -217,13 +216,9 @@ static int __init fsl_guts_init(void)
>   	if (!soc_dev_attr)
>   		return -ENOMEM;
>   
> -	if (of_property_read_string(of_root, "model", &machine))
> -		of_property_read_string_index(of_root, "compatible", 0, &machine);
> -	if (machine) {
> -		soc_dev_attr->machine = kstrdup(machine, GFP_KERNEL);
> -		if (!soc_dev_attr->machine)
> -			goto err_nomem;
> -	}
> +	ret = soc_device_get_machine(soc_dev_attr);
> +	if (ret)
> +		of_machine_get_compatible(&soc_dev_attr->machine);
>   
>   	soc_die = fsl_soc_die_match(svr, fsl_soc_die);
>   	if (soc_die) {
> @@ -267,7 +262,6 @@ static int __init fsl_guts_init(void)
>   err_nomem:
>   	ret = -ENOMEM;
>   err:
> -	kfree(soc_dev_attr->machine);
>   	kfree(soc_dev_attr->family);
>   	kfree(soc_dev_attr->soc_id);
>   	kfree(soc_dev_attr->revision);
>