Re: [patch 08/15] libata: Add ability to prevent PRD from being allocated

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Tejun Heo wrote:
> Hello, Brian.
> 
> brking@xxxxxxxxxx wrote:
> 
>>For some HBAs, particularly SAS HBAs, there is no reason to
>>allocate a PRD buffer, since it is not used. Add a flag
>>to prevent its allocation.
>>
> 
> 
> I think it's better done with ata_sas_port_start/stop rather than with
> ATA_FLAG_NO_PRD.  All sata low level drivers which don't use PRD table
> implement their own port_start/stop (ahci.c, sata_sil24.c for example).

Good point.

	Jeff



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