netdev - Re: Driver build-testing (was: [PATCH] net: dm9000: Fix build)

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Message-Id: <20110418075508.f7b14f43.rdunlap@xenotime.net>
Date:	Mon, 18 Apr 2011 07:55:08 -0700
From:	Randy Dunlap <rdunlap@...otime.net>
To:	Micha? Miros?aw <mirq-linux@...e.qmqm.pl>
Cc:	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	netdev@...r.kernel.org
Subject: Re: Driver build-testing (was: [PATCH] net: dm9000: Fix build)

On Mon, 18 Apr 2011 16:51:02 +0200 Micha? Miros?aw wrote:

> On Mon, Apr 18, 2011 at 01:25:22PM +0100, Mark Brown wrote:
> > On Mon, Apr 18, 2011 at 01:12:03PM +0200, Micha? Miros?aw wrote:
> > > On Mon, Apr 18, 2011 at 12:04:37PM +0100, Mark Brown wrote:
> > > > Commit c88fcb (net: dm9000: convert to hw_features) broke the build of
> > > > the dm9000 driver since it merged functions which use different names
> > > > for the board info structure used for I/O operations without updating
> > > > all the references to use the same name. Fix that.
> > > This brings the issue of build testing effectiveness. In current code
> > > there is no configuration that makes all drivers build. I would like
> > > to see something like 'make brokenconfig' that would allow most of
> > > the code to be built, and not necessarily working. Maybe someone has
> > > an idea how to implement that?
> > For the drivers that genuinely are rather platform specific this tends
> > to fail very badly as you need headers that only come along with the
> > architecture.
> > 
> > In the case of DM9000 if it fails to build on your platform then the
> > driver is just buggy - looking at the Kconfig I rather suspect that the
> > dependency on architectures should just be removed.
> 
> I wonder if allyesconfig/allmodconfig is supposed to include code that's
> known not to work for a particular architecture.

all*config just use whatever is in all of the various Kconfig* files.
If they say "depends on $somearch", then so be it.  If not, then the
remaining dependencies are used.

---
~Randy
*** Remember to use Documentation/SubmitChecklist when testing your code ***
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