watchdog: reset last_hw_keepalive time at start
[ Upstream commit 982bb70517
]
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>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200302200426.6492-3-t-kristo@ti.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -282,6 +282,7 @@ static int watchdog_start(struct watchdog_device *wdd)
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if (err == 0) {
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set_bit(WDOG_ACTIVE, &wdd->status);
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wd_data->last_keepalive = started_at;
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wd_data->last_hw_keepalive = started_at;
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watchdog_update_worker(wdd);
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}
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