linux-kernel - Re: [patch 2.6.20-rc1 5/6] SA1100 GPIO wrappers

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Message-Id: <200612292201.24989.david-b@pacbell.net>
Date:	Fri, 29 Dec 2006 22:01:24 -0800
From:	David Brownell <david-b@...bell.net>
To:	Nicolas Pitre <nico@....org>
Cc:	pHilipp Zabel <philipp.zabel@...il.com>,
	Andrew Morton <akpm@...l.org>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Andrew Victor <andrew@...people.com>,
	Bill Gatliff <bgat@...lgatliff.com>,
	Haavard Skinnemoen <hskinnemoen@...el.com>, jamey.hicks@...com,
	Kevin Hilman <khilman@...sta.com>,
	Russell King <rmk@....linux.org.uk>,
	Tony Lindgren <tony@...mide.com>
Subject: Re: [patch 2.6.20-rc1 5/6] SA1100 GPIO wrappers

On Friday 29 December 2006 7:15 pm, Nicolas Pitre wrote:
> On Fri, 29 Dec 2006, David Brownell wrote:
> 
> > Here's a version that compiles ...
> 
> This patch is completely broken.

It's just what Philipp sent, with the "won't compile" bugs fixed.
Oh, and some #include tweaks.  Philipp?


> > Arch-neutral GPIO calls for PXA.
> 
> This is not PXA but SA1100 to start with.

I seem to have copied the wrong header comment, sorry; the original
patch had none.  It's marginally better than the header claiming it
was a PXA header...


> and you most probably need to protect the implied read-modify-write 
> cycle with a spinlock unless the generic gpio API expects this 
> protection is the responsibility of the caller.

No such lock is known to the caller.  Some of those calls will need
to move to a C file somewhere.

- Dave
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