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

On 18/11/15 17:24, Guenter Roeck wrote:

On 11/17/2015 06:45 PM, Nicolas Boichat wrote:

quoted

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 <redacted>

Reviewed-by: Guenter Roeck <linux@roeck-us.net>

Acked-by: Matthias Brugger <matthias.bgg@gmail.com>

quoted

---
  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;