linux-kernel - Re: [PATCH 2/3] misc: bmp085: Add DT bindings for EOC gpio line and direct irq.

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Date:	Fri, 15 Nov 2013 14:56:19 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Marek Belisko <marek@...delico.com>
Cc:	gregkh@...uxfoundation.org, neilb@...e.de, hns@...delico.com,
	rob.herring@...xeda.com, pawel.moll@....com, mark.rutland@....com,
	swarren@...dotorg.org, ijc+devicetree@...lion.org.uk,
	rob@...dley.net, devicetree@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] misc: bmp085: Add DT bindings for EOC gpio line and direct irq.

On Thursday 14 November 2013, Marek Belisko wrote:
> +       if (node && !pdata) {
> +               pdata = devm_kzalloc(dev, sizeof(struct bmp085_platform_data),
> +                                       GFP_KERNEL);
> +               if (!pdata)
> +                       return -ENOMEM;
> +       }
> +

I generally recommend against allocating platform data from inside the driver,
as this requires more code and more memory than just adding fields to the
driver-specific data structure and copying over the fields from either
DT or the supplied platform data, depending on which one is used.

	Arnd
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