linux-kernel - Re: [PATCH 1/2] asm-generic/io.h: provide default ioremap/iounmap for !HAS

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Date:	Wed, 30 Mar 2016 22:38:16 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Richard Weinberger <richard@....at>
Cc:	Geert Uytterhoeven <geert@...ux-m68k.org>,
	Rob Herring <robh@...nel.org>,
	Lee Jones <lee.jones@...aro.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arch@...r.kernel.org" <linux-arch@...r.kernel.org>,
	uml-devel <user-mode-linux-devel@...ts.sourceforge.net>
Subject: Re: [PATCH 1/2] asm-generic/io.h: provide default ioremap/iounmap for !HAS_IOMEM

On Wednesday 30 March 2016 22:35:37 Richard Weinberger wrote:
> Am 30.03.2016 um 22:08 schrieb Geert Uytterhoeven:
> >> I actually started a patch to remove the HAS_IOMEM dependency
> >> everywhere (or just the per driver cases). It didn't break as bad as I
> >> expected, but became more than I wanted to fix. Mainly, all the devm_
> >> variants also need empty versions or to be always enabled.
> > 
> > Should these dependencies on HAS_IOMEM be changed to "HAS_IOMEM ||
> > COMPILE_TEST"?
> 
> Another idea, the issue with COMPILE_TEST is that it is automatically selected
> by make targets such as allyesconfig or allmodconfig.
> Couldn't we make COMPILE_TEST just harder to select?
> i.e. that with allyesconfig it is still disabled and if someone really wants to
> do a compile test of anything we could issue something like "make allyesconfig COMPILE_TEST=y"
> to have COMPILE_TEST selected?
> 

I think it's essential for allmodconfig and allyesconfig to enable
COMPILE_TEST: the only reason for ever building those configurations
is for compile tests.

	Arnd