watchdog: f71808e_wdt: fix inaccurate report in WDIOC_GETTIMEOUT

The fintek watchdog timer can configure timeouts of second granularity
only up to 255 seconds. Beyond that, the timeout needs to be configured
with minute granularity. WDIOC_GETTIMEOUT should report the actual
timeout configured, not just echo back the timeout configured by the
user. Do so.

Fixes: 96cb4eb019ce ("watchdog: f71808e_wdt: new watchdog driver for Fintek F71808E and F71882FG")
Suggested-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.kernel.org/r/5e17960fe8cc0e3cb2ba53de4730b75d9a0f33d5.1628525954.git-series.a.fatoum@pengutronix.de
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>

diff --git a/drivers/watchdog/f71808e_wdt.c b/drivers/watchdog/f71808e_wdt.c
index f60beec1bbaea3451379f203a500d4d9d113ef7f..f7d82d261913324441bb37258643d05c9ce2bc60 100644 (file)
--- a/drivers/watchdog/f71808e_wdt.c
+++ b/drivers/watchdog/f71808e_wdt.c
@@ -228,15 +228,17 @@ static int watchdog_set_timeout(int timeout)
 
        mutex_lock(&watchdog.lock);
 
-       watchdog.timeout = timeout;
        if (timeout > 0xff) {
                watchdog.timer_val = DIV_ROUND_UP(timeout, 60);
                watchdog.minutes_mode = true;
+               timeout = watchdog.timer_val * 60;
        } else {
                watchdog.timer_val = timeout;
                watchdog.minutes_mode = false;
        }
 
+       watchdog.timeout = timeout;
+
        mutex_unlock(&watchdog.lock);
 
        return 0;