linux-kernel - Re: [patch/rfc 2.6.19-rc5] arch-neutral GPIO calls

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Date:	Sat, 11 Nov 2006 19:15:25 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	David Brownell <david-b@...bell.net>
CC:	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...l.org>,
	Andrew Victor <andrew@...people.com>,
	Bill Gatliff <bgat@...lgatliff.com>,
	Haavard Skinnemoen <hskinnemoen@...el.com>, jamey.hicks@...com,
	Kevin Hilman <khilman@...sta.com>,
	Nicolas Pitre <nico@....org>,
	Russell King <rmk@....linux.org.uk>,
	Tony Lindgren <tony@...mide.com>
Subject: Re: [patch/rfc 2.6.19-rc5] arch-neutral GPIO calls

David Brownell wrote:
> 
> I suspect that userspace GPIO accessors should only be written once
> though, and they're going to be in the "don't care" category.  So
> lack of such a "message compatible" GPIO call set might reasonably
> hold up merging that sort of (configfs?) interface.
> 

Yes, the userspace interface is by far the biggest issue here.

	-hpa
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