linux-kernel - Re: [PATCH] watchdog: mtk_wdt: Use MODE

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Date:	Fri, 20 Nov 2015 17:51:55 +0100
From:	Matthias Brugger <matthias.bgg@...il.com>
To:	Guenter Roeck <linux@...ck-us.net>,
	Nicolas Boichat <drinkcat@...omium.org>
Cc:	Wim Van Sebroeck <wim@...ana.be>, linux-watchdog@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [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:
>> 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@...omium.org>
>
> Reviewed-by: Guenter Roeck <linux@...ck-us.net>

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

>
>> ---
>>   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;
>>
>
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