linux-kernel - Re: [PATCH v4 5/6] coresight: Use of_cpu_phandle_to

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Message-ID: <ffa7968f-15da-4f59-aba5-43619d3f27d3@arm.com>
Date: Wed, 10 Sep 2025 17:29:14 +0100
From: Suzuki K Poulose <suzuki.poulose@....com>
To: Alireza Sanaee <alireza.sanaee@...wei.com>, devicetree@...r.kernel.org,
 linux-kernel@...r.kernel.org
Cc: coresight@...ts.linaro.org, dianders@...omium.org,
 james.clark@...aro.org, jonathan.cameron@...wei.com, krzk@...nel.org,
 linux-arm-kernel@...ts.infradead.org, linux-perf-users@...r.kernel.org,
 linuxarm@...wei.com, mark.rutland@....com, mike.leach@...aro.org,
 robh@...nel.org, ruanjinjie@...wei.com, saravanak@...gle.com
Subject: Re: [PATCH v4 5/6] coresight: Use of_cpu_phandle_to_id for grabbing
 CPU ID

On 05/09/2025 17:18, Alireza Sanaee wrote:
> Use the newly created API (of_cpu_phandle_to_id) to grab CPU ID.
> 
> Reviewed-by: Jonathan Cameron <jonathan.cameron@...wei.com>
> Reviewed-by: Mike Leach <mike.leach@...aro.org>
> Signed-off-by: Alireza Sanaee <alireza.sanaee@...wei.com>
> ---
>   drivers/hwtracing/coresight/coresight-platform.c | 15 +--------------
>   1 file changed, 1 insertion(+), 14 deletions(-)
> 
> diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
> index 0db64c5f4995..95d46ea08936 100644
> --- a/drivers/hwtracing/coresight/coresight-platform.c
> +++ b/drivers/hwtracing/coresight/coresight-platform.c
> @@ -167,20 +167,7 @@ of_coresight_get_output_ports_node(const struct device_node *node)
>   
>   static int of_coresight_get_cpu(struct device *dev)
>   {
> -	int cpu;
> -	struct device_node *dn;
> -
> -	if (!dev->of_node)
> -		return -ENODEV;
> -
> -	dn = of_parse_phandle(dev->of_node, "cpu", 0);
> -	if (!dn)
> -		return -ENODEV;
> -
> -	cpu = of_cpu_node_to_id(dn);
> -	of_node_put(dn);
> -
> -	return cpu;
> +	return of_cpu_phandle_to_id(dev->of_node, NULL, 0);
>   }
>   
>   /*

Acked-by: Suzuki K Poulose <suzuki.poulose@....com>