Re: [RFC]pass pm related information from ata to scsi

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On Mon, 14 May 2012, Aaron Lu wrote:

> Hi,
> 
> ATA ODD has a new feature called device attention, which means it can
> notify sata host that it needs power when in powered off state.
> 
> In libata, we can set a flag(ATA_DFLAG_DA) to represent this when
> identifying the ata device. And when we are going to create the scsi
> device(in ata_scsi_scan_host by __scsi_add_device), I hope the scsi
> driver(sr) knows that this ODD supports device attention in its probe
> function(sr_probe).
> 
> I didn't find a proper way to do this, any suggestions?

Add a corresponding flag to the scsi_cd structure, and set the flag in 
libata's slave_configure routine.

Alan Stern

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