-# After a PREamble PID, the bus segment between Host and Hub uses LS signalling
-# rate and FS signalling polarity (USB 2.0 spec, 11.8.4: "For both upstream and
-# downstream low-speed data, the hub is responsible for inverting the polarity of
-# the data before transmitting to/from a low-speed port."
+ # After a PREamble PID, the bus segment between Host and Hub uses LS
+ # signalling rate and FS signalling polarity (USB 2.0 spec, 11.8.4: "For
+ # both upstream and downstream low-speed data, the hub is responsible for
+ # inverting the polarity of the data before transmitting to/from a
+ # low-speed port.").