netdev - Re: REGRESSION: panic on e1000 driver

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Message-ID: <20070531005147.GA30628@gondor.apana.org.au>
Date:	Thu, 31 May 2007 10:51:47 +1000
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	"Kok, Auke" <auke-jan.h.kok@...el.com>
Cc:	Doug Chapman <doug.chapman@...com>, netdev@...r.kernel.org,
	e1000-devel@...ts.sourceforge.net
Subject: Re: REGRESSION: panic on e1000 driver

On Wed, May 30, 2007 at 03:57:13PM -0700, Kok, Auke wrote:
> 
> Hmm, we're making a mess of it.

Indeed :)

> Herbert, wouldn't it just have been a lot easier to do just add a 
> netif_poll_disable in e1000_probe, so that any and all other poll 
> enable/disables are symmetric ? Something like this?

I wish if it were as simple as that.  As soon as register_netdev
returns somebody else can invoke e1000_open so disabling poll
here can be undesirable.  In fact the existing netif_stop_queue
and netif_carrier_off calls are also bad for the same reason.

I'll keep looking to see if there's some other problem that we
haven't uncovered yet.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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