From: Guenter Roeck <linux@roeck-us.net>
To: Nicolas Boichat <drinkcat@chromium.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Wim Van Sebroeck <wim@iguana.be>,
linux-watchdog@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] watchdog: mtk_wdt: Use MODE_KEY when stopping the watchdog
Date: Wed, 18 Nov 2015 08:24:00 -0800 [thread overview]
Message-ID: <564CA620.7080700@roeck-us.net> (raw)
In-Reply-To: <1447814701-23504-1-git-send-email-drinkcat@chromium.org>
On 11/17/2015 06:45 PM, Nicolas Boichat wrote:
> 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>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
> ---
> 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;
>
next prev parent reply other threads:[~2015-11-18 16:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-18 2:45 [PATCH] watchdog: mtk_wdt: Use MODE_KEY when stopping the watchdog Nicolas Boichat
2015-11-18 16:24 ` Guenter Roeck [this message]
2015-11-20 16:51 ` Matthias Brugger
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