linux-kernel - [PATCH v3 4/7] coresight: Use of_cpu_phandle_to

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Message-ID: <20250512080715.82-5-alireza.sanaee@huawei.com>
Date: Mon, 12 May 2025 09:07:12 +0100
From: Alireza Sanaee <alireza.sanaee@...wei.com>
To: <devicetree@...r.kernel.org>
CC: <robh@...nel.org>, <alireza.sanaee@...wei.com>,
	<jonathan.cameron@...wei.com>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linuxarm@...wei.com>,
	<mark.rutland@....com>, <shameerali.kolothum.thodi@...wei.com>,
	<krzk@...nel.org>, <dianders@...omium.org>, <catalin.marinas@....com>,
	<suzuki.poulose@....com>, <mike.leach@...aro.org>, <james.clark@...aro.org>,
	<linux-perf-users@...r.kernel.org>, <coresight@...ts.linaro.org>,
	<gshan@...hat.com>, <ruanjinjie@...wei.com>, <saravanak@...gle.com>
Subject: [PATCH v3 4/7] coresight: Use of_cpu_phandle_to_id for grabbing CPU id

Use the newly created API to grab CPU id.

Signed-off-by: Alireza Sanaee <alireza.sanaee@...wei.com>
---
 drivers/hwtracing/coresight/coresight-platform.c | 14 ++------------
 1 file changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index 8192ba3279f0..f032fdbe959b 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -167,19 +167,9 @@ 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);
+	struct device_node *dn = NULL;
+	int cpu = of_cpu_phandle_to_id(dev->of_node, &dn, 0);
 	of_node_put(dn);
-
 	return cpu;
 }
 
-- 
2.34.1