From 86955e2bcb320bf8f271443cb7b03896fc3cbd67 Mon Sep 17 00:00:00 2001 From: Gabor Juhos Date: Fri, 23 Dec 2011 19:25:42 +0100 Subject: [PATCH] watchdog: ath79_wdt: flush register writes The watchdog register writes required to have a flush in order to commit the values to the register. Without the flush, the driver not function correctly on AR934X SoCs. Signed-off-by: Gabor Juhos Acked-by: Luis R. Rodriguez Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/ath79_wdt.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/watchdog/ath79_wdt.c b/drivers/watchdog/ath79_wdt.c index 725c84bfdd76..9db808349f8b 100644 --- a/drivers/watchdog/ath79_wdt.c +++ b/drivers/watchdog/ath79_wdt.c @@ -68,17 +68,23 @@ static int max_timeout; static inline void ath79_wdt_keepalive(void) { ath79_reset_wr(AR71XX_RESET_REG_WDOG, wdt_freq * timeout); + /* flush write */ + ath79_reset_rr(AR71XX_RESET_REG_WDOG); } static inline void ath79_wdt_enable(void) { ath79_wdt_keepalive(); ath79_reset_wr(AR71XX_RESET_REG_WDOG_CTRL, WDOG_CTRL_ACTION_FCR); + /* flush write */ + ath79_reset_rr(AR71XX_RESET_REG_WDOG_CTRL); } static inline void ath79_wdt_disable(void) { ath79_reset_wr(AR71XX_RESET_REG_WDOG_CTRL, WDOG_CTRL_ACTION_NONE); + /* flush write */ + ath79_reset_rr(AR71XX_RESET_REG_WDOG_CTRL); } static int ath79_wdt_set_timeout(int val) -- GitLab