[PATCHv2,2/4] watchdog: reset last_hw_keepalive time at start

Message ID 20200302200426.6492-3-t-kristo@ti.com
State New
Headers show
Series
  • watchdog: add TI K3 SoC watchdog support
Related show

Commit Message

Tero Kristo March 2, 2020, 8:04 p.m.
Currently the watchdog core does not initialize the last_hw_keepalive
time during watchdog startup. This will cause the watchdog to be pinged
immediately if enough time has passed from the system boot-up time, and
some types of watchdogs like K3 RTI does not like this.

To avoid the issue, setup the last_hw_keepalive time during watchdog
startup.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
---
v2:
  * apply functionality always instead of being behind a flag

 drivers/watchdog/watchdog_dev.c | 1 +
 1 file changed, 1 insertion(+)

Patch

diff --git a/drivers/watchdog/watchdog_dev.c b/drivers/watchdog/watchdog_dev.c
index 8b5c742f24e8..7e4cd34a8c20 100644
--- a/drivers/watchdog/watchdog_dev.c
+++ b/drivers/watchdog/watchdog_dev.c
@@ -282,6 +282,7 @@  static int watchdog_start(struct watchdog_device *wdd)
 	if (err == 0) {
 		set_bit(WDOG_ACTIVE, &wdd->status);
 		wd_data->last_keepalive = started_at;
+		wd_data->last_hw_keepalive = started_at;
 		watchdog_update_worker(wdd);
 	}