linux-kernel - Re: [PATCH 1/2] watchdog: dw_wdt: pat the watchdog before enabling it

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Date:	Wed, 21 Jan 2015 21:31:42 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	Jisheng Zhang <jszhang@...vell.com>,
	Doug Anderson <dianders@...omium.org>
CC:	Wim Van Sebroeck <wim@...ana.be>, Heiko Stuebner <heiko@...ech.de>,
	Lunxue Dai <lunxue.dai@...k-chips.com>,
	Dinh Nguyen <dinguyen@...era.com>,
	"linux-watchdog@...r.kernel.org" <linux-watchdog@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/2] watchdog: dw_wdt: pat the watchdog before enabling
 it

On 01/21/2015 09:22 PM, Jisheng Zhang wrote:
> Dear Doug,
>
> On Wed, 21 Jan 2015 15:17:22 -0800
> Doug Anderson <dianders@...omium.org> wrote:
>
>> On some dw_wdt implementations the "top" register may be initted to 0
>> at bootup.  In such a case, each "pat" of the watchdog will reset the
>> timer to 0xffff.  That's pretty short.
>
> + Guenter Roeck
>
> This should have been fixed by dfa07141e7a792("watchdog: dw_wdt: initialise
> TOP_INIT in dw_wdt_set_top()")
>
Ah, yes. Doug, can you check if your patch is still needed ?

Thanks,
Guenter

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