[PATCH v2 6/7] watchdog: imx7ulp_wdt: init wdog when it was active
From: Alice Guo (OSS) <hidden>
Date: 2022-08-25 08:33:43
Also in:
linux-watchdog, lkml
Subsystem:
the rest, watchdog device drivers · Maintainers:
Linus Torvalds, Wim Van Sebroeck, Guenter Roeck
From: Jason Liu <redacted> 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 <redacted> Signed-off-by: Alice Guo <redacted> Reviewed-by: Ye Li <redacted> Reviewed-by: Jacky Bai <ping.bai@nxp.com> Tested-by: Jacky Bai <ping.bai@nxp.com> --- Changes for v2: - none 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 0cafa86fff7f..dee02c2a52c9 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
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