From e7de89b8b28531377b4bbf0968fb8465be9af2a2 Mon Sep 17 00:00:00 2001 From: Tao Ren Date: Fri, 16 Apr 2021 20:42:49 -0700 Subject: [PATCH] watchdog: aspeed: fix hardware timeout calculation [ Upstream commit e7dc481c92060f9ce872878b0b7a08c24713a7e5 ] Fix hardware timeout calculation in aspeed_wdt_set_timeout function to ensure the reload value does not exceed the hardware limit. Fixes: efa859f7d786 ("watchdog: Add Aspeed watchdog driver") Reported-by: Amithash Prasad Signed-off-by: Tao Ren Reviewed-by: Guenter Roeck Link: https://lore.kernel.org/r/20210417034249.5978-1-rentao.bupt@gmail.com Signed-off-by: Guenter Roeck Signed-off-by: Wim Van Sebroeck Signed-off-by: Sasha Levin --- drivers/watchdog/aspeed_wdt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/watchdog/aspeed_wdt.c b/drivers/watchdog/aspeed_wdt.c index 7e00960651fa..507fd815d767 100644 --- a/drivers/watchdog/aspeed_wdt.c +++ b/drivers/watchdog/aspeed_wdt.c @@ -147,7 +147,7 @@ static int aspeed_wdt_set_timeout(struct watchdog_device *wdd, wdd->timeout = timeout; - actual = min(timeout, wdd->max_hw_heartbeat_ms * 1000); + actual = min(timeout, wdd->max_hw_heartbeat_ms / 1000); writel(actual * WDT_RATE_1MHZ, wdt->base + WDT_RELOAD_VALUE); writel(WDT_RESTART_MAGIC, wdt->base + WDT_RESTART);