linux-kernel - [PATCH v2 2/2] clocksource/drivers/timer-ti-dm: automate device_node cleanup in dmtimer_percpu_quirk

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Message-Id: <20241028-timer-ti-dm-systimer-of_node_put-v2-2-e6b9a1b3fe67@gmail.com>
Date: Mon, 28 Oct 2024 18:06:43 +0100
From: Javier Carrasco <javier.carrasco.cruz@...il.com>
To: Daniel Lezcano <daniel.lezcano@...aro.org>, 
 Thomas Gleixner <tglx@...utronix.de>, Tony Lindgren <tony@...mide.com>
Cc: linux-kernel@...r.kernel.org, 
 Javier Carrasco <javier.carrasco.cruz@...il.com>
Subject: [PATCH v2 2/2] clocksource/drivers/timer-ti-dm: automate
 device_node cleanup in dmtimer_percpu_quirk_init()

Simplify the code and make it more robust by automating the node release
when it goes out of scope.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
---
 drivers/clocksource/timer-ti-dm-systimer.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/clocksource/timer-ti-dm-systimer.c b/drivers/clocksource/timer-ti-dm-systimer.c
index 23be1d21ce21..d1c144d6f328 100644
--- a/drivers/clocksource/timer-ti-dm-systimer.c
+++ b/drivers/clocksource/timer-ti-dm-systimer.c
@@ -686,15 +686,13 @@ subsys_initcall(dmtimer_percpu_timer_startup);
 
 static int __init dmtimer_percpu_quirk_init(struct device_node *np, u32 pa)
 {
-	struct device_node *arm_timer;
+	struct device_node *arm_timer __free(device_node) =
+		of_find_compatible_node(NULL, NULL, "arm,armv7-timer");
 
-	arm_timer = of_find_compatible_node(NULL, NULL, "arm,armv7-timer");
 	if (of_device_is_available(arm_timer)) {
 		pr_warn_once("ARM architected timer wrap issue i940 detected\n");
-		of_node_put(arm_timer);
 		return 0;
 	}
-	of_node_put(arm_timer);
 
 	if (pa == 0x4882c000)           /* dra7 dmtimer15 */
 		return dmtimer_percpu_timer_init(np, 0);

-- 
2.43.0