linux-kernel - [PATCH v2 3/6] coresight: cti: Use of_cpu_phandle_to

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Message-ID: <20250502161300.1411-4-alireza.sanaee@huawei.com>
Date: Fri, 2 May 2025 17:12:57 +0100
From: Alireza Sanaee <alireza.sanaee@...wei.com>
To: <devicetree@...r.kernel.org>
CC: <robh@...nel.org>, <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>
Subject: [PATCH v2 3/6] coresight: cti: 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>
---
 .../hwtracing/coresight/coresight-cti-platform.c  | 15 +++------------
 1 file changed, 3 insertions(+), 12 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-cti-platform.c b/drivers/hwtracing/coresight/coresight-cti-platform.c
index d0ae10bf6128..369a9b7170e8 100644
--- a/drivers/hwtracing/coresight/coresight-cti-platform.c
+++ b/drivers/hwtracing/coresight/coresight-cti-platform.c
@@ -41,21 +41,12 @@
  */
 static int of_cti_get_cpu_at_node(const struct device_node *node)
 {
+	struct device_node *dn = NULL;
 	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);
+	cpu = of_cpu_phandle_to_id(node, &dn);
 	of_node_put(dn);
-
-	/* No Affinity  if no cpu nodes are found */
-	return (cpu < 0) ? -1 : cpu;
+	return cpu;
 }
 
 #else
-- 
2.34.1