linux-kernel - Re: [PATCH] ISDN: make ICN not auto-grab port 0x320

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Date:	Tue, 12 Aug 2008 07:02:10 +0200
From:	Rene Herman <rene.herman@...access.nl>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Alan Cox <alan@...rguk.ukuu.org.uk>, akpm@...uxfoundation.org,
	fritz@...n4linux.de, kkeil@...e.de,
	isdn4linux@...tserv.isdn4linux.de, linux-kernel@...r.kernel.org,
	mingo@...e.hu
Subject: Re: [PATCH] ISDN: make ICN not auto-grab port 0x320

On 12-08-08 01:48, Andrew Morton wrote:

> otoh it's a bit sad to break allyesconfig kernels - there is
> regression-testing value in being able to run such kernels.
> 
> I wonder if we can add a new boot option `allyesconfig-test' or
> something like that, and then, within the offending drivers, test that
> flag and take suitable avoiding action.
> 
> Or we could do it at compile-time - define
> CONFIG_ALLYESCONFIG_TESTING in some fashion.

Yes, latter I'd feel with the thing most against it that there aren't 
actually many that need it. Here's the list that was posted:

http://lkml.org/lkml/2008/8/1/96

Three legacy ISA driver from that list can now be stricken. Hurrah.

There's always going to be at least a few that'll remain though. For 
example, what are you going to do with:

--- linux.orig/drivers/ide/Kconfig
+++ linux/drivers/ide/Kconfig
@@ -9,6 +9,11 @@ config HAVE_IDE
  menuconfig IDE
  	tristate "ATA/ATAPI/MFM/RLL support"
  	depends on HAVE_IDE
+
+	# my test box expects /dev/sda, not /dev/hda
+	depends on BROKEN_BOOT_ALLOWED
+	select BROKEN_BOOT if IDE = y
+
  	depends on BLOCK
  	---help---
  	  If you say Y here, your kernel will be able to manage low cost

The hda->sda thing was just a disaster -- personally I have to remember 
to change things around till this very day before I boot into my distro 
kernel to test things. I wouldn't be the one suggesting a patch to 
drivers/ide to "fix" that though including really a patch to its Kconfig 
marking it as breaking anything in a global way rather than a 
user-specific way as was done here.

Maybe the test boxes should always boot with ide_core.noprobe=<all> for 
a suitable value of <all> or some such...

Others are the video ones. FB_VESA, FB_VGA16FB and even MDA_CONSOLE are 
in there which seems to imply some decidly non-legacy hardware and I 
sort of doubt willingness to assume global validity of such a setup.

But yes, there is value in the testing so perhaps still worh something 
generic.

(I'll continue some specific looking through the list first although I 
don't believe there is much else that really wants specific fixing).

Rene.
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