diff options
| -rw-r--r-- | drivers/watchdog/qcom-wdt.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/watchdog/qcom-wdt.c b/drivers/watchdog/qcom-wdt.c index ab7465d186fd..07d399c4edc4 100644 --- a/drivers/watchdog/qcom-wdt.c +++ b/drivers/watchdog/qcom-wdt.c @@ -152,6 +152,13 @@ static int qcom_wdt_restart(struct watchdog_device *wdd, unsigned long action, return 0; } +static int qcom_wdt_is_running(struct watchdog_device *wdd) +{ + struct qcom_wdt *wdt = to_qcom_wdt(wdd); + + return (readl(wdt_addr(wdt, WDT_EN)) & QCOM_WDT_ENABLE); +} + static const struct watchdog_ops qcom_wdt_ops = { .start = qcom_wdt_start, .stop = qcom_wdt_stop, @@ -294,6 +301,17 @@ static int qcom_wdt_probe(struct platform_device *pdev) wdt->wdd.timeout = min(wdt->wdd.max_timeout, 30U); watchdog_init_timeout(&wdt->wdd, 0, dev); + /* + * If WDT is already running, call WDT start which + * will stop the WDT, set timeouts as bootloader + * might use different ones and set running bit + * to inform the WDT subsystem to ping the WDT + */ + if (qcom_wdt_is_running(&wdt->wdd)) { + qcom_wdt_start(&wdt->wdd); + set_bit(WDOG_HW_RUNNING, &wdt->wdd.status); + } + ret = devm_watchdog_register_device(dev, &wdt->wdd); if (ret) return ret; |