linux-kernel - Re: [PATCH v2] console: use first console if stdout-path device doesn't appear

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Message-ID: <6286107.lVdN284Pp8@np-p-burton>
Date:   Thu, 3 Nov 2016 13:04:15 +0000
From:   Paul Burton <paul.burton@...tec.com>
To:     Larry Finger <Larry.Finger@...inger.net>,
        Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>
CC:     Andreas Schwab <schwab@...ux-m68k.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Borislav Petkov <bp@...e.de>, Petr Mladek <pmladek@...e.com>,
        Tejun Heo <tj@...nel.org>, <linux-kernel@...r.kernel.org>,
        <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH v2] console: use first console if stdout-path device doesn't appear

On Monday, 31 October 2016 18:31:43 GMT Larry Finger wrote:
> On 10/31/2016 06:09 PM, Sergey Senozhatsky wrote:
> > Hi,
> > 
> > On (10/31/16 15:50), Paul Burton wrote:
> > [..]
> > 
> >> Actually whilst this fixes the output in QEMU it has other problems. I'm
> >> still digging...
> > 
> > I propose a revert of '05fd007e46296', so you guys can find the
> > problem and fix it, not being under 'rc3' pressure.
> 
> If we were at -rc4 or -rc5, then I would agree; however, I think there is
> still time to fix the problem.
> 
> Larry

Hi Larry et al,

If you could give the v3 I just submitted a try that would be great:

    https://patchwork.kernel.org/patch/9410849/

If it still doesn't work for you then we're back to a place where I can't test 
an affected system, since QEMU pseries now works fine with my patch. Would you 
perhaps be able to get some console output by specifying console=<whatever> on 
the kernel command line? Doing that ought to be unaffected by 05fd007e4629 
("console: don't prefer first registered if DT specifies stdout-path") and 
could be a way to get us some debug output.

Thanks,
    Paul
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