linux-kernel - [PATCH] thermal: Replace pr_warn() with pr_warn_once() in user_space

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Date:   Fri, 05 Nov 2021 17:31:54 +0100
From:   "Rafael J. Wysocki" <rjw@...ysocki.net>
To:     Linux PM <linux-pm@...r.kernel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Linus Torvalds <torvalds@...uxfoundation.org>
Subject: [PATCH] thermal: Replace pr_warn() with pr_warn_once() in user_space_bind()

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

Use pr_warn_once() instead of pr_warn() to print the user space
governor deprecation message in user_space_bind() to reduce the
kernel log noise.

Fixes: 0275c9fb0eff ("thermal/core: Make the userspace governor deprecated")
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
---
 drivers/thermal/gov_user_space.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Index: linux-pm/drivers/thermal/gov_user_space.c
===================================================================
--- linux-pm.orig/drivers/thermal/gov_user_space.c
+++ linux-pm/drivers/thermal/gov_user_space.c
@@ -17,8 +17,8 @@
 
 static int user_space_bind(struct thermal_zone_device *tz)
 {
-	pr_warn("Userspace governor deprecated: use thermal netlink "	\
-		"notification instead\n");
+	pr_warn_once("Userspace governor deprecated: use thermal netlink " \
+		     "notification instead\n");
 
 	return 0;
 }