watchdog: wdat_wdt: Add timeout value as a param in ping method

According to the WDAT spec that states about WATCHDOG_ACTION_SET_COUNTDOWN_PERIOD:
"This action is required if WATCHDOG_ACTION_RESET does not explicitly write a new
countdown value to a register during a reset."
And that implies, WATCHDOG_ACTION_RESET may write a countdown value, thus may come
with a WATCHDOG_INSTRUCTION_WRITE_COUNTDOWN, thus need the timeout value as parameter
or would otherwise write 0.
The watchdog for SIONCT6126 need a entry WATCHDOG_INSTRUCTION_WRITE_COUNTDOWN for
WATCHDOG_ACTION_RESET action, I send this patch to support it.

Signed-off-by: Xing Tong Wu <xingtong.wu@siemens.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20231007082125.4699-1-xingtong_wu@163.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/wdat_wdt.c b/drivers/watchdog/wdat_wdt.c
index 0ba99be..650fdc7 100644 (file)
--- a/drivers/watchdog/wdat_wdt.c
+++ b/drivers/watchdog/wdat_wdt.c
@@ -269,7 +269,7 @@ static int wdat_wdt_stop(struct watchdog_device *wdd)
 
 static int wdat_wdt_ping(struct watchdog_device *wdd)
 {
-       return wdat_wdt_run_action(to_wdat_wdt(wdd), ACPI_WDAT_RESET, 0, NULL);
+       return wdat_wdt_run_action(to_wdat_wdt(wdd), ACPI_WDAT_RESET, wdd->timeout, NULL);
 }
 
 static int wdat_wdt_set_timeout(struct watchdog_device *wdd,