Re: [PATCH v2 8/9] soc: renesas: don't access of_root directly

[Rob Herring <robh@kernel.org>]

On Mon, Feb 23, 2026 at 02:37:23PM +0100, Bartosz Golaszewski wrote:
> 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@kernel.org>
> Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@oss.qualcomm.com>
> ---
>  drivers/soc/renesas/renesas-soc.c | 7 ++++++-
>  1 file changed, 6 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/soc/renesas/renesas-soc.c b/drivers/soc/renesas/renesas-soc.c
> index 38ff0b823bdaf1ba106bfb57ed423158d9103f8d..bd8ba0ac30fa91fcf2a10edd0d58b064650085cf 100644
> --- a/drivers/soc/renesas/renesas-soc.c
> +++ b/drivers/soc/renesas/renesas-soc.c
> @@ -6,6 +6,7 @@
>   */
>  
>  #include <linux/bitfield.h>
> +#include <linux/cleanup.h>
>  #include <linux/io.h>
>  #include <linux/of.h>
>  #include <linux/of_address.h>
> @@ -468,7 +469,11 @@ static int __init renesas_soc_init(void)
>  	const char *soc_id;
>  	int ret;
>  
> -	match = of_match_node(renesas_socs, of_root);
> +	struct device_node *root __free(device_node) = of_find_node_by_path("/");
> +	if (!root)
> +		return -ENOENT;
> +
> +	match = of_match_node(renesas_socs, root);

Doesn't of_machine_device_match() work here?