linux-kernel - [PATCH v1] PM: runtime: Introduce one more usage counter guard

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Message-ID: <12752072.O9o76ZdvQC@rafael.j.wysocki>
Date: Wed, 01 Oct 2025 19:34:29 +0200
From: "Rafael J. Wysocki" <rafael@...nel.org>
To: Linux PM <linux-pm@...r.kernel.org>
Cc: LKML <linux-kernel@...r.kernel.org>, Ulf Hansson <ulf.hansson@...aro.org>,
 Takashi Iwai <tiwai@...e.de>, Jonathan Cameron <jonathan.cameron@...wei.com>,
 Dhruva Gole <d-gole@...com>
Subject: [PATCH v1] PM: runtime: Introduce one more usage counter guard

From: Rafael J. Wysocki <rafael.j.wysocki@...el.com>

Follow previous commit 9a0abc39450a ("PM: runtime: Add auto-cleanup
macros for "resume and get" operations") and define a runtime PM
usage counter guard in which pm_runtime_get_noresume() and
pm_runtime_put_noidle() will be used for incrementing and
decrementing it, respectively.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---

Commit 9a0abc39450a is there in my linux-next branch.

---
 include/linux/pm_runtime.h |    3 +++
 1 file changed, 3 insertions(+)

--- a/include/linux/pm_runtime.h
+++ b/include/linux/pm_runtime.h
@@ -610,6 +610,9 @@ static inline int pm_runtime_put_autosus
 	return __pm_runtime_put_autosuspend(dev);
 }

+DEFINE_GUARD(pm_runtime_noresume, struct device *,
+	     pm_runtime_get_noresume(_T), pm_runtime_put_noidle(_T));
+
 DEFINE_GUARD(pm_runtime_active, struct device *,
 	     pm_runtime_get_sync(_T), pm_runtime_put(_T));
 DEFINE_GUARD(pm_runtime_active_auto, struct device *,