Kristen: You've been doing a lot of work on link power management for SCSI buses. It would be good if we could integrate this with the USB power-management implementation in the usb-storage driver -- but I'm not sure whether our requirements and feature sets really match up. I'm not at all familiar with what you've already done. From my point of view, what's needed is a way for the SCSI core to tell a lower-level driver that all the devices on its bus are safely quiescent and it's okay to put the HBA & transport into a power-saving state. (For example, the higher layers would have to insure that disk heads are parked and drives spun down, if needed.) It might be nice to have a callback for the converse situation also, but this doesn't seem necessary since the LLD can go back to full power on demand. (The same approach ought to work with non-USB transports, but I'll stick to what I know about.) Does this mesh well with your current designs? Alan Stern - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
