linux-kernel - [PATCH v3 3/6] arch_topology: update CPU map to use of_cpu_phandle_to

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Message-ID: <20250718094848.587-4-alireza.sanaee@huawei.com>
Date: Fri, 18 Jul 2025 10:48:45 +0100
From: Alireza Sanaee <alireza.sanaee@...wei.com>
To: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <jonathan.cameron@...wei.com>, <coresight@...ts.linaro.org>,
	<dianders@...omium.org>, <james.clark@...aro.org>, <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>,
	<shameerali.kolothum.thodi@...wei.com>, <suzuki.poulose@....com>
Subject: [PATCH v3 3/6] arch_topology: update CPU map to use of_cpu_phandle_to_id

Refactor get_cpu_for_node to use of_cpu_phandle_to_id instead of
of_cpu_node_to_id.

Signed-off-by: Alireza Sanaee <alireza.sanaee@...wei.com>
---
 drivers/base/arch_topology.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 6fafd86f608a..72bf23cdf469 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -474,20 +474,19 @@ static unsigned int max_smt_thread_num = 1;
 static int __init get_cpu_for_node(struct device_node *node)
 {
 	int cpu;
-	struct device_node *cpu_node __free(device_node) =
-		of_parse_phandle(node, "cpu", 0);
+	struct device_node *cpu_node = NULL;
 
-	if (!cpu_node)
-		return -1;
-
-	cpu = of_cpu_node_to_id(cpu_node);
-	if (cpu < 0) {
+	cpu = of_cpu_phandle_to_id(node, &cpu_node, 0);
+	if (cpu == -ENODEV) {
 		pr_info("CPU node exist but the possible cpu range is :%*pbl\n",
 			cpumask_pr_args(cpu_possible_mask));
 		return cpu;
+	} else if (cpu < 0) {
+		return -1;
 	}
 
 	topology_parse_cpu_capacity(cpu_node, cpu);
+	of_node_put(cpu_node);
 	return cpu;
 }
 
-- 
2.43.0