Description of problem:
ring buffer filled with messages like:
[30847.144862] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30847.145736] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30847.146558] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30849.191469] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30849.192215] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30849.192964] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30851.238179] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30851.239061] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30851.239851] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30853.284720] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30853.285579] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
[30853.286409] xhci_hcd 0000:06:00.0: WARN: Stalled endpoint
(three such messages per second)


I can always reproduce this after pluging in a "Logitech, Inc. Unifying Receiver", for an M510 wireless mouse.

This are the messages I get when plugging in the device:

[27090.162054] usb 2-1.2: new full-speed USB device number 8 using ehci_hcd
[27090.249839] usb 2-1.2: New USB device found, idVendor=046d, idProduct=c52b
[27090.249844] usb 2-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[27090.249847] usb 2-1.2: Product: USB Receiver
[27090.249850] usb 2-1.2: Manufacturer: Logitech
[27090.253032] logitech-djreceiver 0003:046D:C52B.0009: hiddev0,hidraw2: USB HID v1.11 Device [Logitech USB Receiver] on usb-0000:00:1d.0-1.2/input2
[27090.254527] input: Logitech Unifying Device. Wireless PID:1025 as /devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2/2-1.2:1.2/0003:046D:C52B.0009/input/input8
[27090.254583] logitech-djdevice 0003:046D:C52B.000A: input,hidraw3: USB HID v1.11 Mouse [Logitech Unifying Device. Wireless PID:1025] on usb-0000:00:1d.0-1.2:1
checking bus 2, device 8: "/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.2"
bus: 2, device: 8 was not an MTP device