linux-kernel - Re: [Linux-fbdev-devel] [PATCH 1/2] fb: add support for foreign endianness

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Message-ID: <18365.1344.466799.556560@cargo.ozlabs.ibm.com>
Date:	Thu, 21 Feb 2008 15:59:44 +1100
From:	Paul Mackerras <paulus@...ba.org>
To:	avorontsov@...mvista.com
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Clemens Koller <clemens.koller@...gramm.de>,
	benh@...nel.crashing.org, linux-fbdev-devel@...ts.sourceforge.net,
	adaplas@...il.com, Krzysztof Helt <krzysztof.h1@...zta.fm>,
	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	Geert Uytterhoeven <geert@...ux-m68k.org>
Subject: Re: [Linux-fbdev-devel] [PATCH 1/2] fb: add support for foreign endianness

Anton Vorontsov writes:

> > I was wondering if it would be sufficient to provide alternative
> > versions of fb_readl, fb_writel etc. that do byte-swapping.
> 
> This is of course viable alternative. And I was considering this, but
> later I abandoned the idea: that way we'll end up doing math in the
> native endianness and then converting it to the foreign. This feels
> ugly in contrast when we can do the right math in the first place, per
> framebuffer.

OK.  I guess I'm convinced then.  However, your patch description
needs to be a lot better.  It should describe things like why you
want to make the change and why the change you are proposing is a good
idea and is better than other alternatives.  If you'd done that
originally we might not have needed to have all this discussion. :)

Paul.
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