linux-kernel - Re: [PATCH 1/2] New Driver for IOSF-SB MBI access on Intel SOCs

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Message-ID: <20131124004132.6ca1c0e1@alan.etchedpixels.co.uk>
Date:	Sun, 24 Nov 2013 00:41:32 +0000
From:	One Thousand Gnomes <gnomes@...rguk.ukuu.org.uk>
To:	"David E. Box" <david.e.box@...ux.intel.com>
Cc:	tglx@...utronix.de, mingo@...hat.com, hpa@...or.com, rjw@...k.pl,
	x86@...nel.org, linux-kernel@...r.kernel.org,
	linux-acpi@...r.kernel.org
Subject: Re: [PATCH 1/2] New Driver for IOSF-SB MBI access on Intel SOCs

On Thu, 21 Nov 2013 22:05:56 -0800
"David E. Box" <david.e.box@...ux.intel.com> wrote:

> +static int iosf_mbi_probe(struct platform_device *pdev)
> +{
> +	struct resource *mem;
> +
> +	/* Get and map MBI address space */
> +	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +	iosf_mbi_data.addr = devm_ioremap_resource(&pdev->dev, mem);

Purely "defensive driv(er)ing" but platform_get_resource can return NULL

Alan
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