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netif_poll_disable() hangs

To: "David S. Miller" <davem@xxxxxxxxxx>
Subject: netif_poll_disable() hangs
From: Andrew Morton <akpm@xxxxxxxx>
Date: Sun, 7 Sep 2003 23:21:45 -0700
Cc: netdev@xxxxxxxxxxx
Sender: netdev-bounce@xxxxxxxxxxx
Very simple:

        ifup eth0
        ifdown eth0
        ifup eth0
        ifdown eth0     <- hangs in dev_close -> netif_poll_disable()


Because the first close sets __LINK_STATE_RX_SCHED and nothing ever clears
it.  

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