On Wed, 8 Oct 2014, Oliver Neukum wrote: > On Wed, 2014-10-08 at 18:31 +0530, Naveen Kumar Parna wrote: > > Later connected third device(hci2) and after 2mins observed –EPIPE for > > hci2(hci2 urb ffff880124f11cc0 status -32 count 0) > > This points to a problem in the USB HC driver. > Can you enable debugging in that driver. It could also be a bug in the hub that the BT devices are plugged into. I have seen a report of a hub that sends STALL when a bunch of devices are plugged in, even though the devices themselves did not send a STALL. 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