linux-kernel - Re: [patch -mm] Make check_signature() depend on CONFIG_HAS

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Message-ID: <20070629001244.3ce09917@the-village.bc.nu>
Date:	Fri, 29 Jun 2007 00:12:44 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Roman Zippel <zippel@...ux-m68k.org>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Heiko Carstens <heiko.carstens@...ibm.com>,
	linux-kernel@...r.kernel.org,
	Martin Schwidefsky <schwidefsky@...ibm.com>
Subject: Re: [patch -mm] Make check_signature() depend on CONFIG_HAS_IOMEM

> > check_signature is relevant for anything with MMIO space (for example you
> > can legitimately want to check_signature a MAC68K Nubus ROM).
> 
> A generic check_signature() is a little difficult if we have separate io 
> functions for every bus.

Does M68K implement iomap() and pci_iomap and friends yet ?
check_signature has fairly few users so moving to be iomap based wouldn't
be hard if that was a problem. The other option would seem to be
bus->check_signature() ?

Alan
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