linux-kernel - Re: [patch 2.6.20-rc1 4/6] PXA GPIO wrappers

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Message-id: <Pine.LNX.4.64.0612210925130.18171@xanadu.home>
Date:	Thu, 21 Dec 2006 09:27:20 -0500 (EST)
From:	Nicolas Pitre <nico@....org>
To:	David Brownell <david-b@...bell.net>
Cc:	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>,
	pHilipp Zabel <philipp.zabel@...il.com>
Subject: Re: [patch 2.6.20-rc1 4/6] PXA GPIO wrappers

On Wed, 20 Dec 2006, David Brownell wrote:

> On Wednesday 20 December 2006 10:12 pm, Andrew Morton wrote:
> > Why not implement them as inline functions?
> 
> I just collected and forwarded the code from Philip...
> the better not to lose such stuff!  :)
> 
>  
> > Or non-inline functions, come to that.
> 
> In this case I think that'd be preferable; see what those macros
> expand to on pxa27x CPUs.

Only if the gpio argument is not constant please.  When it is constant 
this expands to a single word store.


Nicolas
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