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Date:   Tue, 22 Jul 2014 16:49:14 +0100
From:   Rob Kendrick <rob.kendrick@codethink.co.uk>
To:     Markos Chandras <Markos.Chandras@imgtec.com>
Cc:     linux-mips@linux-mips.org
Subject: Re: EdgeRouter Pro supported?  Strange FP problems
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On Tue, Jul 22, 2014 at 04:38:24PM +0100, Markos Chandras wrote:
> there have been quite a few FPU changes in 3.16. I am able to reproduce
> the problem on EdgeRouter (non pro) but the result is not the same as
> yours. The output using the 'gawk' is:
> 
> prefix is ''
> suffix is 'baz'

This is still, of course, wrong ;)  I'm glad somebody's managed to
reproduce it and it's not just madness on my part.

> a quick bisect between v3.15 and v3.16-rc1, which is the first tag with
> all the new FPU changes, leads to the following bad commit:
> 
> 08a07904e182895e1205f399465a3d622c0115b8
> MIPS: math-emu: Remove most ifdefery.
> 
> Reverting the commit is not trivial unfortunately. Perhaps you could use
> a v3.15 kernel for now (assuming it boots on that board) or perhaps use
> an earlier revision before this bad commit (eg
> 9e8bad1f9c0370b2635175b34d6151b90a53da5c, which boots and your test
> works for me)

I'll give it a whirl; I don't think 3.15 will boot at all on this
hardware, though.

Thanks for your help!
-- 
Rob Kendrick, Senior Consulting Developer                Codethink Ltd.
Telephone: +44 7880 657 193              302 Ducie House, Ducie Street,
http://www.codethink.co.uk/         Manchester, M1 2JW, United Kingdom.