linux-kernel - Re: [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE

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Date:	Tue, 7 Aug 2012 16:45:55 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Russell King <rmk@....linux.org.uk>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Arnd Bergmann <arnd@...db.de>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	sameo@...ux.intel.com, rpurdie@...ys.net, bryan.wu@...onical.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/5] mfd: replace IORESOURCE_IO by IORESOURCE_MEM

>  #define IORESOURCE_TYPE_BITS	0x00001f00	/* Resource type */
>  #define IORESOURCE_IO		0x00000100
>  #define IORESOURCE_MEM		0x00000200
> +#define IORESOURCE_FOO		0x00000300

These are bit masks and checked as such in many places. This makes no
sense at all.


Moving to IO_RESOURCE_TYPE() being 0-31 values might be smart but its a
massive all kernel change.

Alan
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