From: Jason Liu <jason.hui.liu@xxxxxxx>
Paired with suspend, we can only init wdog again when it was active
and ping it once to avoid the watchdog timeout after it resumed.
Signed-off-by: Jason Liu <jason.hui.liu@xxxxxxx>
Signed-off-by: Alice Guo <alice.guo@xxxxxxx>
Reviewed-by: Ye Li <ye.li@xxxxxxx>
Reviewed-by: Jacky Bai <ping.bai@xxxxxxx>
Tested-by: Jacky Bai <ping.bai@xxxxxxx>
---
drivers/watchdog/imx7ulp_wdt.c | 13 +++----------
1 file changed, 3 insertions(+), 10 deletions(-)
diff --git a/drivers/watchdog/imx7ulp_wdt.c b/drivers/watchdog/imx7ulp_wdt.c
index 51eaaf24bd8f..58508f69d933 100644
--- a/drivers/watchdog/imx7ulp_wdt.c
+++ b/drivers/watchdog/imx7ulp_wdt.c
@@ -136,13 +136,6 @@ static int imx7ulp_wdt_enable(struct watchdog_device *wdog, bool enable)
return ret;
}
-static bool imx7ulp_wdt_is_enabled(void __iomem *base)
-{
- u32 val = readl(base + WDOG_CS);
-
- return val & WDOG_CS_EN;
-}
-
static int imx7ulp_wdt_ping(struct watchdog_device *wdog)
{
struct imx7ulp_wdt_device *wdt = watchdog_get_drvdata(wdog);
@@ -382,11 +375,11 @@ static int __maybe_unused imx7ulp_wdt_resume_noirq(struct device *dev)
if (ret)
return ret;
- if (imx7ulp_wdt_is_enabled(imx7ulp_wdt->base))
+ if (watchdog_active(&imx7ulp_wdt->wdd)) {
imx7ulp_wdt_init(imx7ulp_wdt, timeout);
-
- if (watchdog_active(&imx7ulp_wdt->wdd))
imx7ulp_wdt_start(&imx7ulp_wdt->wdd);
+ imx7ulp_wdt_ping(&imx7ulp_wdt->wdd);
+ }
return 0;
}
--
2.17.1
