linux-kernel - [PATCH 3/3] MIPS: Loongson: Add log before power off due to high temperature

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Message-Id: <1588938904-924-4-git-send-email-yangtiezhu@loongson.cn>
Date:   Fri,  8 May 2020 19:55:04 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Huacai Chen <chenhc@...ote.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org,
        Xuefeng Li <lixuefeng@...ngson.cn>
Subject: [PATCH 3/3] MIPS: Loongson: Add log before power off due to high temperature

When the CPU temperature is too high, it is better to print a log before
power off, this is useful when analysis the abnormal issues.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 drivers/platform/mips/cpu_hwmon.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/mips/cpu_hwmon.c b/drivers/platform/mips/cpu_hwmon.c
index 7b4bde1..6dfecd8 100644
--- a/drivers/platform/mips/cpu_hwmon.c
+++ b/drivers/platform/mips/cpu_hwmon.c
@@ -162,10 +162,12 @@ static void do_thermal_timer(struct work_struct *work)
 			temp_max = value;
 	}
 
-	if (temp_max <= CPU_THERMAL_THRESHOLD)
+	if (temp_max <= CPU_THERMAL_THRESHOLD) {
 		schedule_delayed_work(&thermal_work, msecs_to_jiffies(5000));
-	else
+	} else {
+		pr_emerg("Power off due to high temperature: %d\n", value);
 		orderly_poweroff(true);
+	}
 }
 
 static int __init loongson_hwmon_init(void)
-- 
2.1.0