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[PATCH] watchdog: mtk_wdt: Use MODE_KEY when stopping the watchdog

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WDT_MODE value need to be or-ed with MODE_KEY when setting
watchdog mode. Add it to mtk_wdt_stop function, so that the
watchdog can be stopped (e.g. during suspend).

Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
---
 drivers/watchdog/mtk_wdt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/watchdog/mtk_wdt.c b/drivers/watchdog/mtk_wdt.c
index 6ad9df9..b751f43 100644
--- a/drivers/watchdog/mtk_wdt.c
+++ b/drivers/watchdog/mtk_wdt.c
@@ -123,6 +123,7 @@ static int mtk_wdt_stop(struct watchdog_device *wdt_dev)
 
 	reg = readl(wdt_base + WDT_MODE);
 	reg &= ~WDT_MODE_EN;
+	reg |= WDT_MODE_KEY;
 	iowrite32(reg, wdt_base + WDT_MODE);
 
 	return 0;
-- 
2.6.0.rc2.230.g3dd15c0

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[PATCH] watchdog: mtk_wdt: Use MODE_KEY when stopping the watchdog Nicolas Boichat <drinkcat@chromium.org> - 2015-11-18 03:50 +0100
  Re: [PATCH] watchdog: mtk_wdt: Use MODE_KEY when stopping the  watchdog Guenter Roeck <linux@roeck-us.net> - 2015-11-18 17:30 +0100
    Re: [PATCH] watchdog: mtk_wdt: Use MODE_KEY when stopping the  watchdog Matthias Brugger <matthias.bgg@gmail.com> - 2015-11-20 18:00 +0100

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