From: Hoan Nguyen An <[email protected]> Fix setting for bit WOVFE of RWTCSRA. Keep it enable follow hardware document.
Signed-off-by: Hoan Nguyen An <[email protected]> --- drivers/watchdog/renesas_wdt.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/watchdog/renesas_wdt.c b/drivers/watchdog/renesas_wdt.c index 565dbc1..a6aca0e 100644 --- a/drivers/watchdog/renesas_wdt.c +++ b/drivers/watchdog/renesas_wdt.c @@ -19,6 +19,7 @@ #define RWTCNT 0 #define RWTCSRA 4 +#define RWTCSRA_WOVFE BIT(3) #define RWTCSRA_WOVF BIT(4) #define RWTCSRA_WRFLG BIT(5) #define RWTCSRA_TME BIT(7) @@ -82,13 +83,14 @@ static int rwdt_start(struct watchdog_device *wdev) rwdt_write(priv, val, RWTCSRA); rwdt_init_timeout(wdev); - rwdt_write(priv, priv->cks, RWTCSRA); + val |= priv->cks; + rwdt_write(priv, val, RWTCSRA); rwdt_write(priv, 0, RWTCSRB); while (readb_relaxed(priv->base + RWTCSRA) & RWTCSRA_WRFLG) cpu_relax(); - - rwdt_write(priv, priv->cks | RWTCSRA_TME, RWTCSRA); + /* Enable interrupt and timer */ + rwdt_write(priv, val | RWTCSRA_WOVFE | RWTCSRA_TME, RWTCSRA); return 0; } -- 2.7.4
