netdev - Re: [PATCH] fix hostap registration order

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Date:	Thu, 09 Dec 2010 19:53:15 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	mroos@...ux.ee
Cc:	netdev@...r.kernel.org, j@...fi, linux-wireless@...r.kernel.org
Subject: Re: [PATCH] fix hostap registration order

From: Meelis Roos <mroos@...ux.ee>
Date: Fri, 10 Dec 2010 01:19:23 +0200 (EET)

> In 2.6.37-rc4, hostap_pci init gives a WARNING with backtrace telling 
> that netif_stop_queue is called before register_netdev. Fix it by moving 
> this call after register_netdev. Removes the warning and seems to work, 
> but why is the call to netif_stop_queue needed at all after 
> register_netdev?
> 
> Signed-off-by: Meelis Roos <mroos@...ux.ee>

It should simply not touch the queue state at all at this point.

Your change would add a race.  At the moment the device is registered
it can be brought up, and then your code will eroneously modify
the queue state.
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