On Sun, Jan 15, 2017 at 10:06:52AM +0000, Vincent Pelletier wrote: > Hello, > > Using configfs and functionfs I configured a 3-endpoints gadget the > following way: > - OUT f_fs ep: 1 real ep: 1 | OUT (0x01) > - IN f_fs ep: 2 real ep: 1 | IN (0x81) > - IN f_fs ep: 3 real ep: 2 | IN (0x82) > > When connected to host: > - Real ep 0x01 works. > - Real ep 0x81 is silent (all URBs timeout). > - Real ep 0x82 works. What are you doing on the host to talk to these endpoints? > Plugging my usb analyser, I see no bus activity at all for the last > one, though I do see transactions for the others. I also see this > message on host: > Jan 15 09:52:30 localhost kernel: [232403.009744] xhci_hcd 0000:00:14.0: WARN Event TRB for slot 24 ep 4 with no TDs queued? > Would xhci_hcd (or the HCD itlsef ?) fail when a single endpoint works > in both directions ? An endpoint can not work in both directions, that's not how USB endpoints work at all. I think you are confusing the hardware with your configuration :) thanks, greg k-h -- 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
