netdev - Re: Commit "ipconfig wait for carrier" makes boot hang for 2 mins if no carrier

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Date:	Wed, 5 Sep 2012 09:04:59 +0200
From:	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
To:	Micha Nelissen <micha@...i.hopto.org>
Cc:	netdev@...r.kernel.org
Subject: Re: Commit "ipconfig wait for carrier" makes boot hang for 2 mins if no
  carrier

Micha Nelissen <micha@...i.hopto.org> wrote on 2012/09/04 21:33:37:
>
> Joakim Tjernlund wrote:
> >>  Why not set the IP address then in your rootfs yourself?  Micha
> >
> > I could ask you the same question, why do you need to have nfs in kernel?
>
> Because that's where my root filesystem is? The IP autoconfiguration
> code exists for this purpose.

This is not the only purpose.

>
> > The answer is probably the same, it is much easier to
> > manage our IP config in one place for our embedded system.
>
> You retrieve the kernel via TFTP or so when booting?

Yes, but mostly not. This really doesn't matter

>
> > I don't understand why you need 2 minutes timeout for carrier either?
>
> Just a safe value.
>
> > The wait should be conditional on NFS root or not so that non NFS roots
> > can skip this stage altogether.
>
> Feel free to submit a patch :-)

Your patch broke other use cases so my patch would just revert or change the tmo
to 2 secs or so.
Or you could clean up your stuff so it works for all and not just for you.

 Jocke

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