linux-kernel - [PATCH v3 4/6] coresight: cti: Use of_cpu_phandle_to

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Message-ID: <20250718094848.587-5-alireza.sanaee@huawei.com>
Date: Fri, 18 Jul 2025 10:48:46 +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 4/6] coresight: cti: Use of_cpu_phandle_to_id for grabbing CPU id

Use the newly created API (of_cpu_phandle_to_id) to grab CPU ID.

Reviewed-by: Mike Leach <mike.leach@...aro.org>
Signed-off-by: Alireza Sanaee <alireza.sanaee@...wei.com>
---
 .../hwtracing/coresight/coresight-cti-platform.c    | 13 +------------
 1 file changed, 1 insertion(+), 12 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c
index d0ae10bf6128..2629962dbe3e 100644
--- a/drivers/hwtracing/coresight/coresight-cti-platform.c
+++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
@@ -41,18 +41,7 @@
  */
 static int of_cti_get_cpu_at_node(const struct device_node *node)
 {
-	int cpu;
-	struct device_node *dn;
-
-	if (node == NULL)
-		return -1;
-
-	dn = of_parse_phandle(node, "cpu", 0);
-	/* CTI affinity defaults to no cpu */
-	if (!dn)
-		return -1;
-	cpu = of_cpu_node_to_id(dn);
-	of_node_put(dn);
+	int cpu = of_cpu_phandle_to_id(node, NULL, 0);
 
 	/* No Affinity  if no cpu nodes are found */
 	return (cpu < 0) ? -1 : cpu;
-- 
2.43.0