kernel/Documentation/ABI/testing/sysfs-bus-pci-drivers-ehci_hcd
.. .. @@ -21,11 +21,11 @@ 21 21 number returns the port to normal operation. 22 22 23 23 For example: To force the high-speed device attached to 24 - port 4 on bus 2 to run at full speed:24 + port 4 on bus 2 to run at full speed::25 25 26 26 echo 4 >/sys/bus/usb/devices/usb2/../companion 27 27 28 - To return the port to high-speed operation:28 + To return the port to high-speed operation::29 29 30 30 echo -4 >/sys/bus/usb/devices/usb2/../companion 31 31