Re: ipr SATA problems in 2.6.20

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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


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