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kernel os linux

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>

authored by

Xing Tong Wu and committed by
Wim Van Sebroeck
725b6a89 7e5bca6e

+1 -1
+1 -1
drivers/watchdog/wdat_wdt.c
··· 269 269 270 270 static int wdat_wdt_ping(struct watchdog_device *wdd) 271 271 { 272 - return wdat_wdt_run_action(to_wdat_wdt(wdd), ACPI_WDAT_RESET, 0, NULL); 272 + return wdat_wdt_run_action(to_wdat_wdt(wdd), ACPI_WDAT_RESET, wdd->timeout, NULL); 273 273 } 274 274 275 275 static int wdat_wdt_set_timeout(struct watchdog_device *wdd,