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watchdog: renesas_wdt: don't round closest with get_timeleft

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We should never return more time left than there actually is. So, switch
to a plain divider instead of DIV_ROUND_CLOSEST.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
This commit is contained in:
Wolfram Sang 2017-07-19 10:27:53 +02:00 committed by Wim Van Sebroeck
parent b51247c802
commit 1c1b243401
1 changed files with 1 additions and 1 deletions
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2
drivers/watchdog/renesas_wdt.c
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@ -92,7 +92,7 @@ static unsigned int rwdt_get_timeleft(struct watchdog_device *wdev)
struct rwdt_priv *priv = watchdog_get_drvdata(wdev);
u16 val = readw_relaxed(priv->base + RWTCNT);
return DIV_ROUND_CLOSEST(65536 - val, priv->clks_per_sec);
return (65536 - val) / priv->clks_per_sec;
}
static const struct watchdog_info rwdt_ident = {