linux-kernel - Re: [PATCH v2 4/4] watchdog: aspeed: Move init to arch

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Date:   Sun, 22 Oct 2017 09:22:05 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Andrew Jeffery <andrew@...id.au>, Joel Stanley <joel@....id.au>
Cc:     linux-watchdog@...r.kernel.org, Wim Van Sebroeck <wim@...ana.be>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        OpenBMC Maillist <openbmc@...ts.ozlabs.org>,
        linux-aspeed@...ts.ozlabs.org, Ryan Chen <ryan_chen@...eedtech.com>
Subject: Re: [PATCH v2 4/4] watchdog: aspeed: Move init to arch_initcall

On 10/17/2017 04:35 AM, Andrew Jeffery wrote:
> On Wed, 2017-09-20 at 15:43 +0930, Joel Stanley wrote:
>>> On Wed, Sep 20, 2017 at 3:00 PM, Andrew Jeffery <andrew@...id.au> wrote:
>>> Probing at device_initcall time lead to perverse cases where the
>>> watchdog was probed after, say, I2C devices, which then leaves a
>>> potentially running watchdog at the mercy of I2C device behaviour and
>>> bus conditions.
>>>
>>> Load the watchdog driver early to ensure that the kernel is patting it
>>> well before initialising peripherals.
>>>
>>> Signed-off-by: Andrew Jeffery <andrew@...id.au>
>>
>> I agree that we need to make sure the watchdog driver is loaded
>> earlier. I think this is the correct method, but I'll defer to Guenter
>> on this one.
> 
> Just following up on Joel's comments: Is there anything else I need to
> address?
> 

No. Sorry, I have been terribly busy. Digging through patch backlog today.

Guenter