linux-kernel - Re: [PATCH 1/5] iTCO_wdt: Expose watchdog properties using platform data

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Message-ID: <20150728095236.GF2492@codeblueprint.co.uk>
Date:	Tue, 28 Jul 2015 10:52:36 +0100
From:	Matt Fleming <matt@...eblueprint.co.uk>
To:	Guenter Roeck <linux@...ck-us.net>
Cc:	Wim Van Sebroeck <wim@...ana.be>, linux-kernel@...r.kernel.org,
	linux-watchdog@...r.kernel.org,
	Mika Westerberg <mika.westerberg@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Jean Delvare <jdelvare@...e.com>,
	Wolfram Sang <wsa@...-dreams.de>,
	Matt Fleming <matt.fleming@...el.com>,
	Peter Tyser <ptyser@...-inc.com>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH 1/5] iTCO_wdt: Expose watchdog properties using platform
 data

On Mon, 27 Jul, at 07:24:09AM, Guenter Roeck wrote:
> On 07/27/2015 07:19 AM, Matt Fleming wrote:
> >On Mon, 27 Jul, at 06:49:08AM, Guenter Roeck wrote:
> >>
> >>I don't see the platform data freed anywhere, neither in the error path nor
> >>in the cleanup path of this driver. Can you use devm_kzalloc() ?
> >>Otherwise I think you'll need a cleanup path.
> >
> >Oops, good catch. Yes, devm_kzalloc() can be used here, thanks!
> >
> Or maybe just use a static data structure, like in the i2c driver.

The point of dynamically allocating it is that we can use the data from
the static lpc_ich_chipset_info array and munge into the correct
platform data.

The alternative would be to go and mass-modify that array to include
iTCO_wdt_platform_data objects that we could directly pass to the
iTCO_wdt driver. I wanted to avoid the code churn, but I'm not super
bothered either way if people have strong opinions about it.

-- 
Matt Fleming, Intel Open Source Technology Center
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