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From: Alireza Sanaee <alireza.sanaee@huawei.com>
To: <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <jonathan.cameron@huawei.com>, <coresight@lists.linaro.org>,
	<dianders@chromium.org>, <james.clark@linaro.org>,
	<krzk@kernel.org>, <linux-arm-kernel@lists.infradead.org>,
	<linux-perf-users@vger.kernel.org>, <linuxarm@huawei.com>,
	<mark.rutland@arm.com>, <mike.leach@linaro.org>,
	<robh@kernel.org>, <ruanjinjie@huawei.com>,
	<saravanak@google.com>, <shameerali.kolothum.thodi@huawei.com>,
	<suzuki.poulose@arm.com>
Subject: [PATCH v3 3/6] arch_topology: update CPU map to use of_cpu_phandle_to_id
Date: Fri, 18 Jul 2025 10:48:45 +0100	[thread overview]
Message-ID: <20250718094848.587-4-alireza.sanaee@huawei.com> (raw)
In-Reply-To: <20250718094848.587-1-alireza.sanaee@huawei.com>

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@huawei.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



  parent reply	other threads:[~2025-07-18 10:04 UTC|newest]

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-07-18  9:48 [PATCH v3 0/6] Refactoring finding CPU phandles in DT Alireza Sanaee
2025-07-18  9:48 ` [PATCH v3 1/6] of: add infra for finding CPU id from phandle Alireza Sanaee
2025-07-18 11:10   ` Jonathan Cameron
2025-07-21  0:30   ` Rob Herring (Arm)
2025-07-18  9:48 ` [PATCH v3 2/6] arch_topology: drop the use of cpu_node in the pr_info Alireza Sanaee
2025-07-18 11:12   ` Jonathan Cameron
2025-07-18  9:48 ` Alireza Sanaee [this message]
2025-07-18 11:14   ` [PATCH v3 3/6] arch_topology: update CPU map to use of_cpu_phandle_to_id Jonathan Cameron
2025-07-18  9:48 ` [PATCH v3 4/6] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id Alireza Sanaee
2025-07-18 11:14   ` Jonathan Cameron
2025-07-18  9:48 ` [PATCH v3 5/6] coresight: Use of_cpu_phandle_to_id for grabbing CPU ID Alireza Sanaee
2025-07-18 12:59   ` Mike Leach
2025-07-18  9:48 ` [PATCH v3 6/6] perf/arm-dsu: refactor cpu id retrieval via new API of_cpu_phandle_to_id Alireza Sanaee
2025-07-18 11:15   ` Jonathan Cameron

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