linux-kernel - Re: Look Ma, da kernel is b0rken

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Date:	Fri, 7 Dec 2012 18:44:05 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Andreas Mohr <andi@...as.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, Li Shaohua <shaohua.li@...el.com>,
	linux-acpi@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: Look Ma, da kernel is b0rken

On Fri, Dec 07, 2012 at 05:52:18PM +0100, Andreas Mohr wrote:
> I hate having to rain on the parade again ;) I just developed
> some doubts, by accident again, by getting dangerously near
> sound/isa/als100.c snd_als100_pnpids: there are many IDs with '@'
> embedded (at least in this ISA-based PnP code), thus I guess that
> code may have had its justification (unless ACPI 5.0 is clearly fully
> authoritative for this space and thus '@' does not have any business
> there any more).
>
> Dito e.g. isa/cmi8330.c.
>
> Hmm, anyone deeply familiar with ISA PnP ID magic? :)

Even if this is violating the ACPI spec, any fix for this needs to be
tested on the hardware (and I can very well imagine that the hardware
might be violating the spec too, nothing new here).

So even if you had a fix, you need to run it on the hardware to verify
that it actually works.

So the actual practical question turns into: do you have such hardware
to verify your or anyone else's fix on?

Thanks.

-- 
Regards/Gruss,
    Boris.
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