netdev - disable_irq in ndo_poll

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Date:	Thu, 3 Sep 2009 15:46:22 +0800
From:	JiSheng Zhang <jszhang3@...il.com>
To:	netdev@...r.kernel.org
Subject: disable_irq in ndo_poll_controller

Hi list,

I found that there are three disable irq method in nicard drivers
ndo_poll_controller implementation :
1.disable_irq
2.loacle_irq_save
3.program nicard's register

why need disable irq in ndo_poll_controller?
Is all the three method equivalent?
Now I'm adding netconsole support to nic of our soc, which can I take
from the tree method?

Thanks in advance,
Jisheng
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