On Thu, 8 Nov 2012, Jason J. Herne wrote: > On Thu, Nov 8, 2012 at 11:23 AM, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx> wrote: > > I don't know how the ATA layer in Linux works. You'll have to ask > > someone else or figure it out yourself. > > > >> I know we get to sd_prep_fn even when the drive in connected directly > >> via Sata, just not > >> sure which READ is used. I could find this out with a simple test. > > > > It's not just a question of which command sd_prep_fn generates; it's > > also a question of what command ultimately gets sent to the drive. > > They aren't necessarily the same. > > > > Alan, > > Thank you very much for all your help with this. > Do you have any thoughts on where I should take this next? > I noticed that a usb-storage list exists. Perhaps there? No. You shouldn't think of this as a USB problem any more; you should consider it a SCSI/ATA problem. Try asking the people on the linux-scsi and linux-ide mailing lists. But keep linux-usb in the CC: list just in case. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
