Re: Netconsole & sungem: hang when link down

[Colin Leroy]

On 06 Oct 2004 at 19h10, Benjamin Herrenschmidt wrote:

Hi, 

> Hrm... we have some sort of spinlock debugging, at least on ppc64...
> BTW, did you have SMP or PREEMPT ? If none of these, then you should
> not see any spin deadlock...

No, in fact. You're right...
Indeed, if there was a deadlock, it would also happen when cable is
plugged in, wouldn't it ? (as sungem outputs "Link is up at xxx..." or
something when correctly initialized).

> The solution is to look at the code though and find what's wrong :)

I'll try. 
The called method in the driver when calling 
  dev_change_flags(ndev, ndev->flags | IFF_UP) from netpoll
is
  gem_open(), if I'm not mistaken?

Could some kind of infinite loop happen within gem_link_timer, maybe ?

-- 
Colin
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