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 <qiang.zhao@nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/drivers/watchdog/sbsa_gwdt.c b/drivers/watchdog/sbsa_gwdt.c
index f0f1e3b..bbcd04d 100644 (file)
--- 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,
 };