> > On Mon, Oct 22, 2001 at 02:28:18PM -0700, David Brownell wrote: > > > > Not that very many people access that field; it's > > ignored by "hub.c" and (as I seem to recall) is > > there only for backwards compat with the very > > earliest USB 1.0 hubs. (USB 1.1 fixed the bits > > to be all ones.) In the kernel, only virtual root > > hubs touch that field; and user mode code can > > see it through usbdevfs, but it should avoid it. > > ah, thanks for the explaination. >
y'all should punt taking the time to look at this field (PortPwrCtrlMask, er whatever). we could not figure out how to use it in USB 1.0 hubs, so we obsoleted the feature in USB 1.1. The field does not contain any useful information in any compliant hub. should have probably deleted it for 2.0, but we were too busy making the transaction translator simple :) Regards John H. _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
