From d1331b9bb16c5318fc8a7b6831136c79c116f8d9 Mon Sep 17 00:00:00 2001 From: Zhao Qiang Date: Mon, 24 Aug 2020 15:18:33 +0800 Subject: [PATCH] LF-3296-2 watchdog: sbsa_gwdt: add shutdown hook to driver Kexec maybe need more time than timeout of wdt(sbsa) which will reset the system. So it is necessary to add shutdown hook to disable the wdt when run kexec. Signed-off-by: Zhao Qiang Reviewed-by: Priyanka Jain --- drivers/watchdog/sbsa_gwdt.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c index f0f1e3b2e463..bbcd04d099d2 100644 --- a/drivers/watchdog/sbsa_gwdt.c +++ b/drivers/watchdog/sbsa_gwdt.c @@ -313,6 +313,14 @@ static int sbsa_gwdt_probe(struct platform_device *pdev) return 0; } +static void sbsa_gwdt_shutdown(struct platform_device *pdev) +{ + struct sbsa_gwdt *gwdt; + + gwdt = platform_get_drvdata(pdev); + sbsa_gwdt_stop(&gwdt->wdd); +} + /* Disable watchdog if it is active during suspend */ static int __maybe_unused sbsa_gwdt_suspend(struct device *dev) { @@ -357,6 +365,7 @@ static struct platform_driver sbsa_gwdt_driver = { .pm = &sbsa_gwdt_pm_ops, .of_match_table = sbsa_gwdt_of_match, }, + .shutdown = sbsa_gwdt_shutdown, .probe = sbsa_gwdt_probe, .id_table = sbsa_gwdt_pdev_match, }; -- 2.17.1