From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Lord <liml@rtr.ca>
Subject: Re: [PATCH #upstream-fixes] libata: skip 0xff polling for PATA controllers
Date: Thu, 08 Nov 2007 08:39:46 -0500
Message-ID: <473311A2.9080005@rtr.ca>
References: <47327262.9020004@gmail.com>
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To: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>, IDE/ATA development list <linux-ide@vger.kernel.org>, Luca Tettamanti <kronos.it@gmail.com>

Tejun Heo wrote:
> In a presentation of true workmanship, pata_ali asserts IRQ
> permanantly if the TF status register is read more than once when
> there's no device attached to the port.
..

Is using the altstatus reg (rather than status reg), when possible,
a better idea here?