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[3/5] watchdog: renesas_wdt: don't round closest with get_timeleft

Message ID 20170717151230.12680-4-wsa+renesas@sang-engineering.com (mailing list archive)
State Superseded
Delegated to: Geert Uytterhoeven
Headers show

Commit Message

Wolfram Sang July 17, 2017, 3:12 p.m. UTC 
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>
---
 drivers/watchdog/renesas_wdt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c
index 0b9e8a9b1dd14c..d2390695d3453f 100644
--- a/drivers/watchdog/renesas_wdt.c
+++ b/drivers/watchdog/renesas_wdt.c
@@ -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 = {