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From: David Miller <davem@davemloft.net>
Subject: Re: [Uclinux-dist-devel] [PATCH 1/5] netdev: bfin_mac: Blackfin
 EMAC interrupt may not be shared
Date: Fri, 29 May 2009 04:28:17 -0700 (PDT)
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From: Mike Frysinger <vapier.adi@gmail.com>
Date: Fri, 29 May 2009 07:22:05 -0400

> why implement extra over head in an interrupt handler to support an
> operating mode the hardware can never support.

What overhead?  It should be pretty easy to see if the device
is really indicating an interrupt or not :-)