linux-kernel - [PATCH 2/2] cpufreq: dt-platdev: eliminate uses of of_node

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Message-Id: <20240423-of_node_put_cpufreq_dt-v1-2-19f51910276f@gmail.com>
Date: Tue, 23 Apr 2024 10:27:45 +0200
From: Javier Carrasco <javier.carrasco.cruz@...il.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>, 
 Viresh Kumar <viresh.kumar@...aro.org>
Cc: linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Javier Carrasco <javier.carrasco.cruz@...il.com>
Subject: [PATCH 2/2] cpufreq: dt-platdev: eliminate uses of of_node_put()

Make use of the __free() cleanup handler to automatically free nodes
when they get out of scope.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
---
 drivers/cpufreq/cpufreq-dt-platdev.c | 7 ++-----
 1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/cpufreq/cpufreq-dt-platdev.c b/drivers/cpufreq/cpufreq-dt-platdev.c
index 86d8baa81679..c74dd1e01e0d 100644
--- a/drivers/cpufreq/cpufreq-dt-platdev.c
+++ b/drivers/cpufreq/cpufreq-dt-platdev.c
@@ -198,19 +198,18 @@ static const struct of_device_id blocklist[] __initconst = {
 
 static bool __init cpu0_node_has_opp_v2_prop(void)
 {
-	struct device_node *np = of_cpu_device_node_get(0);
+	struct device_node *np __free(device_node) = of_cpu_device_node_get(0);
 	bool ret = false;
 
 	if (of_property_present(np, "operating-points-v2"))
 		ret = true;
 
-	of_node_put(np);
 	return ret;
 }
 
 static int __init cpufreq_dt_platdev_init(void)
 {
-	struct device_node *np = of_find_node_by_path("/");
+	struct device_node *np __free(device_node) = of_find_node_by_path("/");
 	const struct of_device_id *match;
 	const void *data = NULL;
 
@@ -226,11 +225,9 @@ static int __init cpufreq_dt_platdev_init(void)
 	if (cpu0_node_has_opp_v2_prop() && !of_match_node(blocklist, np))
 		goto create_pdev;
 
-	of_node_put(np);
 	return -ENODEV;
 
 create_pdev:
-	of_node_put(np);
 	return PTR_ERR_OR_ZERO(platform_device_register_data(NULL, "cpufreq-dt",
 			       -1, data,
 			       sizeof(struct cpufreq_dt_platform_data)));

-- 
2.40.1