From: Jeff Garzik <jgarzik@pobox.com>
To: Alan <alan@lxorguk.ukuu.org.uk>
Cc: brking@linux.vnet.ibm.com, linux-scsi@vger.kernel.org,
James Bottomley <James.Bottomley@steeleye.com>,
"linux-ide@vger.kernel.org" <linux-ide@vger.kernel.org>,
Tejun Heo <htejun@gmail.com>
Subject: Re: ipr SATA problems in 2.6.20
Date: Tue, 16 Jan 2007 17:45:56 -0500 [thread overview]
Message-ID: <45AD55A4.50208@pobox.com> (raw)
In-Reply-To: <20070116224115.50d29cf7@localhost.localdomain>
Alan wrote:
>> The other oddity I've been seeing is that I am getting zero length commands,
>> such as TEST_UNIT_READY with a dma_dir of DMA_FROM_DEVICE. Shouldn't this be
>> DMA_NONE? I'm still tracking this down.
>
> I was looking at a PATA trace that was looking the same 2 days ago and
> couldn't figure what was going on.
Tejun recently updated the CDB length areas of the code. I bet it's
either a bug somewhere in there, or the SCSI layer isn't passing us
proper command lengths in a case or two.
Additional traces (starting with SCSI command, before it hits libata)
would be helpful.
Jeff
next prev parent reply other threads:[~2007-01-16 22:46 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-16 22:24 ipr SATA problems in 2.6.20 Brian King
2007-01-16 22:41 ` Alan
2007-01-16 22:45 ` Jeff Garzik [this message]
2007-01-16 23:11 ` James Bottomley
2007-01-16 23:17 ` Brian King
2007-01-16 23:30 ` James Bottomley
2007-01-16 23:33 ` Brian King
2007-01-17 2:34 ` [PATCH] libata: initialize qc->dma_dir to DMA_NONE Tejun Heo
2007-01-17 3:43 ` Brian King
2007-01-17 3:59 ` Jeff Garzik
2007-01-17 14:37 ` Brian King
2007-01-17 18:35 ` Brian King
2007-01-17 15:19 ` James Bottomley
2007-01-17 15:49 ` Tejun Heo
2007-01-17 16:07 ` James Bottomley
2007-01-20 0:19 ` Jeff Garzik
2007-01-16 23:28 ` ipr SATA problems in 2.6.20 Alan
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