From: Tiezhu Yang <yangtiezhu@loongson.cn>
Date: Thu, 9 Jul 2020 03:55:20 +0000 (+0800)
Subject: MIPS: Loongson: Reduce possible loop times and add log in do_thermal_timer()
X-Git-Tag: v5.9-rc1~128^2~59
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=17cbb0702e89f36db7608a441e9557088bd790ea;p=thirdparty%2Fkernel%2Flinux.git

MIPS: Loongson: Reduce possible loop times and add log in do_thermal_timer()

Once the temperature of any CPUs is too high, it can power off immediately,
no need to check the rest of CPUs, and it is better to print a log before
power off, this is useful when analysis the abnormal issues.

Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Zhi Li <lizhi01@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
---

diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c
index fa42b13f2e562..c9f35e5d0b891 100644
--- a/drivers/platform/mips/cpu_hwmon.c
+++ b/drivers/platform/mips/cpu_hwmon.c
@@ -153,18 +153,17 @@ static struct delayed_work thermal_work;
 
 static void do_thermal_timer(struct work_struct *work)
 {
-	int i, value, temp_max = 0;
+	int i, value;
 
 	for (i = 0; i < nr_packages; i++) {
 		value = loongson3_cpu_temp(i);
-		if (value > temp_max)
-			temp_max = value;
+		if (value > CPU_THERMAL_THRESHOLD) {
+			pr_emerg("Power off due to high temp: %d\n", value);
+			orderly_poweroff(true);
+		}
 	}
 
-	if (temp_max <= CPU_THERMAL_THRESHOLD)
-		schedule_delayed_work(&thermal_work, msecs_to_jiffies(5000));
-	else
-		orderly_poweroff(true);
+	schedule_delayed_work(&thermal_work, msecs_to_jiffies(5000));
 }
 
 static int __init loongson_hwmon_init(void)