linux-kernel - [PATCH 2/3] watchdog: sprd: change timeout value from 1000 to 2000

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Message-Id: <20201026080919.28413-3-zhang.lyra@gmail.com>
Date:   Mon, 26 Oct 2020 16:09:18 +0800
From:   Chunyan Zhang <zhang.lyra@...il.com>
To:     Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>
Cc:     linux-watchdog@...r.kernel.org, linux-kernel@...r.kernel.org,
        Orson Zhai <orsonzhai@...il.com>,
        Baolin Wang <baolin.wang7@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>
Subject: [PATCH 2/3] watchdog: sprd: change timeout value from 1000 to 2000

From: Lingling Xu <ling_ling.xu@...soc.com>

Because cpu_relax() takes different time on different SoCs, for some rare
cases, it would take more than 1000 cycles for waitting load operation
finished. The result of many times testing verified that changing the
timeout value to 2000 can solve the issue.

Fixes: 477603467009 ("watchdog: Add Spreadtrum watchdog driver")
Signed-off-by: Lingling Xu <ling_ling.xu@...soc.com>
Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com>
---
 drivers/watchdog/sprd_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/watchdog/sprd_wdt.c b/drivers/watchdog/sprd_wdt.c
index f3c90b4afead..4f2a8c6d6485 100644
--- a/drivers/watchdog/sprd_wdt.c
+++ b/drivers/watchdog/sprd_wdt.c
@@ -53,7 +53,7 @@
 
 #define SPRD_WDT_CNT_HIGH_SHIFT		16
 #define SPRD_WDT_LOW_VALUE_MASK		GENMASK(15, 0)
-#define SPRD_WDT_LOAD_TIMEOUT		1000
+#define SPRD_WDT_LOAD_TIMEOUT		2000
 
 struct sprd_wdt {
 	void __iomem *base;
-- 
2.20.1