From: Zhao Qiang <qiang.zhao@xxxxxxx>
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 <qiang.zhao@xxxxxxx>
---
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 f0f1e3b..bbcd04d 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,
};
--
2.7.4
