On Mon, Jan 26, 2009 at 02:40:55PM -0800, Matthew Dharm wrote: > On Mon, Jan 26, 2009 at 01:43:09PM -0800, Sarah Sharp wrote: > > A more important question is will the SCSI layer can support command queueing > > to the USB MSD driver, or will there need to be changes there also? > > Well, this is an easy question: It's supported. SCSI core supports command > queueing. Right now, the usb-storage driver has a queue depth of 1. But, > SCSI core will queue multiple commands to an HCD driver (the HCD set the > queue depth limit). How does the host controller driver (HCD) get involved here? I haven't seen anything like this while writing the xHCI driver. Did you mean mass storage device (MSD) driver? Can you point me to the code that does this? Thanks, Sarah Sharp -- 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
