From: Tejun Heo <htejun@gmail.com>
To: Mark Lord <liml@rtr.ca>
Cc: Jeff Garzik <jeff@garzik.org>,
IDE/ATA development list <linux-ide@vger.kernel.org>,
Luca Tettamanti <kronos.it@gmail.com>
Subject: Re: [PATCH #upstream-fixes] libata: skip 0xff polling for PATA controllers
Date: Fri, 09 Nov 2007 09:41:33 +0900 [thread overview]
Message-ID: <4733ACBD.4020602@gmail.com> (raw)
In-Reply-To: <473311A2.9080005@rtr.ca>
Mark Lord wrote:
> 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?
I dunno. It probably differs case-by-case. In general, status reg
should be safer as it is supposed to clear IRQ.
--
tejun
next prev parent reply other threads:[~2007-11-09 1:08 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-11-08 2:20 [PATCH #upstream-fixes] libata: skip 0xff polling for PATA controllers Tejun Heo
2007-11-08 10:53 ` Alan Cox
2007-11-08 13:39 ` Mark Lord
2007-11-09 0:41 ` Tejun Heo [this message]
2007-11-08 18:14 ` Jeff Garzik
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