On Thu, 2007-02-01 at 09:33 +0900, Tejun Heo wrote:
> I might have missed the discussion but can't we just set
> host->max_cmd_len to 16 unconditionally?  libata is emulating a SCSI
> device anyway and, from SCSI's POV, the situation is that any libata
> ATAPI device can do both 12 and 16 byte commands while some of them only
> allow allow ATA_16 for 16 byte command.
> 
> Also, it's not like host->max_cmd_len gives any guaranteed protection
> against CDB length.  Being a 'host' limit, it's set to the highest
> number in the host.  In that respect, it should be set to 16 too.  All
> ATA hosts can do 16 byte CDBs.

This looks like a much better proposal to me.

James


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