linux-kernel - Re: [PATCH v3 1/6] watchdog: davinci: change driver to use WDT core

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Message-ID: <52959966.7000509@roeck-us.net>
Date:	Tue, 26 Nov 2013 23:04:06 -0800
From:	Guenter Roeck <linux@...ck-us.net>
To:	Sekhar Nori <nsekhar@...com>,
	Ivan Khoronzhuk <ivan.khoronzhuk@...com>,
	Santosh Shilimkar <santosh.shilimkar@...com>
CC:	linux-arm-kernel@...ts.infradead.org, mark.rutland@....com,
	wim@...ana.be, linux-watchdog@...r.kernel.org,
	devicetree@...r.kernel.org, Pawel Moll <Pawel.Moll@....com>,
	swarren@...dotorg.org, ijc+devicetree@...lion.org.uk,
	galak@...nel.crashing.org, rob.herring@...xeda.com,
	linux-kernel@...r.kernel.org, grant.likely@...aro.org,
	grygorii.strashko@...com
Subject: Re: [PATCH v3 1/6] watchdog: davinci: change driver to use WDT core

On 11/26/2013 08:31 PM, Sekhar Nori wrote:
> On Monday 25 November 2013 07:34 PM, Ivan Khoronzhuk wrote:
>> To reduce code duplicate and increase code readability use WDT core
>> code to handle WDT interface.
>>
>> Remove io_lock as the WDT core uses mutex to lock each wdt device.
>> Remove wdt_state as the WDT core tracks state with its own variable.
>>
>> The watchdog_init_timeout() can read timeout value from timeout-sec
>> property if the passed value is out of bounds. The heartbeat is
>> initialized in next way. If heartbeat is not set thought module
>> parameter, try to read it's value from WDT node timeout-sec property.
>> If node has no one, use default value.
>>
>> The heartbeat is hold in wdd->timeout by WDT core, so use it in
>> order to set timeout period.
>>
>> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
>> Acked-by: Santosh Shilimkar <santosh.shilimkar@...com>
>> Reviewed-by: Guenter Roeck <linux@...ck-us.net>
>
> So this still causes a regression because the clk_get()
> fails due to the changed device name. Please fold this
> patch in (tested on DM365, compiled on rest).
>
> Also, the change in device name (while needed) does not seem
> to be related to usage of wdt core. Can you may be split
> that change into a separate patch?
>

Given all the trouble with it, I think that would be a good idea.

Guenter

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