On Thu, Mar 21, 2002, Greg KH <[EMAIL PROTECTED]> wrote: > On Thu, Mar 21, 2002 at 10:35:22AM -0800, Maksim Krasnyanskiy wrote: > > > > >> I read in the IrDA-USB.c line 46 that " ... based on the 2.4.10... the > > >> uhci.c does not implement the USB_ZERO_PACKET .... " in my 2.4.18 > > >kernel. > > >> Is it the reason why uchi does not work for the zero length packet? Or > > >this > > >> comment is obsolesced? And is it fixed in the uhci.c in any newer kernel? > > > > > >Yes, the comment is now obsolete. > > >USB_ZERO_PACKET works properly in all USB host controller drivers. > > uhci has some problems though. > > For example if I enable USB_ZERO_PACKET with 3Com the very first bulk out > > transfer crashes the device. > > ie uhci reports disconnect and immediate connect. But connect is not > > successful, uhci says that device is not > > accepting the address. Unplugging does not help. No matter how many times I > > re plug this thing uhci keeps > > saying that device is not accepting the address unlit I reload uhci module > > itself. > > > > usb-uhci works just fine with USB_ZERO_PACKET enabled in Bluetooth driver. > > I didn't realize this. Does Johannes know about this?
I don't recall anyone sending me email about this. The only driver I know of that uses ZERO_PACKET is ir-usb.c and I don't have one of those devices. His failure scenario sounds like the HC crashed, which would be a bit odd looking at the code. Do you get any other error messages around the time when the problems start occuring? Do other devices work if you plug them in? JE _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
