linux-kernel - Re: [PATCH 1/2] regulator: gpio: Avoid unnecessarily copying data structures in probe()

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Date:	Fri, 29 Jan 2016 17:25:28 +0100
From:	Harald Geyer <harald@...ib.org>
To:	Mark Brown <broonie@...nel.org>
cc:	Harald Geyer <harald@...ib.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Heiko Stuebner <heiko@...ech.de>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] regulator: gpio: Avoid unnecessarily copying data structures in probe()

Mark Brown writes:
> On Thu, Jan 28, 2016 at 07:55:17PM +0000, Harald Geyer wrote:
> > The data structures either have been copied in
> > of_get_gpio_regulator_config() already or are part of platform data,
> > which we keep a pointer to for the life time of the device anyway.
> 
> The point of this code is to avoid referring to platform data after
> probe for robustness.

Well, if we can't rely on platform data staying available after probe()
then probably we shouldn't keep a pointer to it - but thats a different
issue, so lets focus on the original problem:

What's your preferred way to fix the error path of probe() then?

Harald