On Thu, 2010-02-18 at 14:16 +0530, Ramya Desai wrote: > On Wed, Feb 17, 2010 at 8:32 PM, James Bottomley > <James.Bottomley@xxxxxxx> wrote: > > > I have no idea what the MS driver is, so it's impossible to answer > > specifically. > > MS means mass storage driver only. OK, still don't know what that is ... but Randy decoded this for me; he said you mean a driver under drivers/usb/storage? In that case, it looks like the helpers in protocol.c do use chaining correctly (as long as the driver isn't doing direct dma), but there's a clamp on the sg table size in scsiglue.c: .sg_tablesize = SG_ALL That would have to be changed to SCSI_MAX_SG_CHAIN_SEGMENTS to enable chaining. James -- 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
