On Fri, 21 Aug 2009, David Vrabel wrote: > Greg KH wrote: > > On Fri, Aug 21, 2009 at 02:48:45PM +0000, David Vrabel wrote: > >> The WHCI HCD will also support urbs with scatter-gather lists. Add a > >> usb_bus field to indicated how many sg list elements are supported by > >> the HCD. > > > > That's nice. > > > >> Save space in struct urb by adding a URB_HAS_SG flag and reusing > >> transfer_buffer to point to a struct sg_table. > > > > That isn't nice. > > It's what Alan Stern asked for. > > http://marc.info/?l=linux-usb&m=123334494530421&w=2 True, but in the meantime I have changed my mind. There's an advantage to always having a pointer to the data buffer available. This is related to usbmon and those other changes in the DMA setup. 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
