linux-kernel - Re: [PATCH] rename HAS_IOPORT to HAS_IOPORT

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Date:	Thu, 20 Feb 2014 16:24:19 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	"Uwe Kleine-König" <u.kleine-koenig@...gutronix.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, kernel@...gutronix.de
Subject: Re: [PATCH] rename HAS_IOPORT to HAS_IOPORT_MAP

On Thursday 20 February 2014, Uwe Kleine-König wrote:
> If the renamed symbol is defined lib/iomap.c implements ioport_map and
> ioport_unmap and currently (nearly) all platforms define the port
> accessor functions outb/inb and friend unconditionally. So
> HAS_IOPORT_MAP is the better name for this. Consequently NO_IOPORT is
> renamed to NO_IOPORT_MAP.
> 
> The motivation for this change is to reintroduce a symbol HAS_IOPORT
> that signals if outb/int et al are available. I will address that
> at least one merge window later though to keep surprises to a minimum
> and catch new introductions of (HAS|NO)_IOPORT.
> 
> The changes in this commit were done using:
> 
>         $ git grep -l -E '(NO|HAS)_IOPORT' | xargs perl -p -i -e 's/\b((?:CONFIG_)?(?:NO|HAS)_IOPORT)\b/$1_MAP/'
> 
> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>

Thanks for taking up that work, I had a similar patch series
some years ago but never followed through with getting it upstream.
If there are no objections, I hope Andrew can queue it up for -mm.
Unfortunately I can't think of a good way to split up the patch
into smaller units that could go through subsystem maintainer
trees, since we want to start reusing the symbol as soon as possible.

Acked-by: Arnd Bergmann <arnd@...db.de>
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