[PATCH] Re: Linkstation Mini and __machine_arch_type problem, not booting since 3.8

Russell King - ARM Linux linux at arm.linux.org.uk
Fri Jun 19 08:44:39 PDT 2015

On Fri, Jun 19, 2015 at 03:46:45PM +0200, Benjamin Cama wrote:
> Hi Russell,
> Do not misunderstand me: I am not at all for keeping the situation like
> this! What I ask is just for users to be notified of this new requirement:
> for my case, my board simply couldn't boot anymore, without any
> explanation.

It's not a new requirement.  It's something that's been there all along,
and is finally starting to bite places where it never used to bite before.
It's a latent bug in platform code, that's all.

This "IRQ0 is bad" has been known for quite some while - you've already
been pointed at Linus' rant about it, dated 25 Jan 2007.  If you do a bit
of research, you'll find that the orion code was contributed _after_ that

While it's easy to stick a warning into orion_irq_init() (or whatever the
function is called), it's utterly pointless now that it's been found -
just fix all the users of orion_irq_init() now and be done with it.

As for "shouldn't this have had a warning in the past", well, maybe, but
consider this task:

	Please go and look at the other mach-* directories, and find
	all those which might use IRQ0, and arrange for them to print
	a warning.

I'm sure you'll see what a task it is that you're asking for.

What you're asking for is actually unreasonable.

(I am aware that Dove broke exactly for this reason, and I've been
carrying a patch since December 2014 to fix Dove - but I just don't have
the time to get it merged - like most of my other Dove work.)

FTTC broadband for 0.8mile line: currently at 10.5Mbps down 400kbps up
according to speedtest.net.

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