watchdog: keembay: Update pretimeout to zero in the TH ISR

The pretimeout has to be updated to zero during the ISR of the
ThresHold interrupt. Else the TH interrupt would be triggerred for
every tick until the timeout.

Fixes: 65392bb2ca8c ("watchdog: Add watchdog driver for Intel Keembay Soc")
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Kris Pan <kris.pan@intel.com>
Signed-off-by: Shruthi Sanil <shruthi.sanil@intel.com>
Link: https://lore.kernel.org/r/20210517174953.19404-4-shruthi.sanil@intel.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/keembay_wdt.c b/drivers/watchdog/keembay_wdt.c
index b2afeb4a60e3325fbb13a15eb178ff1ec6c90161..6053416b8d3d48b4414fc571e1af45ab064a01d5 100644 (file)
--- a/drivers/watchdog/keembay_wdt.c
+++ b/drivers/watchdog/keembay_wdt.c
@@ -154,6 +154,8 @@ static irqreturn_t keembay_wdt_th_isr(int irq, void *dev_id)
        struct keembay_wdt *wdt = dev_id;
        struct arm_smccc_res res;
 
+       keembay_wdt_set_pretimeout(&wdt->wdd, 0x0);
+
        arm_smccc_smc(WDT_ISR_CLEAR, WDT_ISR_MASK, 0, 0, 0, 0, 0, 0, &res);
        dev_crit(wdt->wdd.parent, "Intel Keem Bay non-sec wdt pre-timeout.\n");
        watchdog_notify_pretimeout(&wdt->wdd);