Linux-controlled USB binding/Unbinding

Linux-controlled USB binding/Unbinding

http://www.jianshu.com/p/57293f9be558

Today's work encountered a problem, to use the code to achieve the USB enable and disable. Google a little, finally find the ideal answer, I am here to do a short porting. Source: A blog outside the wall

• Start by lsusb-t to view the USB port information:

  /: Bus 02.Port 1:dev 1, class= "Root_hub", driver=ehci-pci/3p, 480M |__ Port 1:dev 2, If 0, class= "hub", Driver =hub/8p, 480M |__ Port 6:dev, if 0, class= "Vend"., driver=, 480M |__ Port 6:dev, if 1, class= "Vend"., Dr IVER=USBFS, 480M |__ Port 6:dev, if 2, class= "Comm"., DRIVER=CDC_ACM, 480M |__ Port 6:dev, if 3, class= " Data ", DRIVER=CDC_ACM, 480M |__ Port 6:dev, if 4, class=" Comm "., DRIVER=CDC_ACM, 480M |__ Port 6:dev, if 5, class= "Data", DRIVER=CDC_ACM, 480M |__ Port 6:dev, If 6, class= "Comm"., DRIVER=CDC_ACM, 480M |__ Port 6: Dev, If 7, class= "Data", DRIVER=CDC_ACM, 480m/: Bus 01.Port 1:dev 1, class= "Root_hub", driver=ehci-pci/3p, 480M |__ Port 1:dev 2, if 0, class= "hub", driver=hub/6p, 480M |__ Port 1:dev 6, if 0, class= "HID", Driver=usbhid, 1.5M |__ Port 1:dev 6, if 1, class= "hid", Driver=usbhid, 1.5M |__ Port 3:dev 9, if 0, class= "hid", Driver=usbhid, 1.5m< /code>

  (Note: You can plug and unplug the USB you want to control to determine which port is which bus.)
  Here I want to operate Port 6 under port 1 of Bus 02.
• Execute the following command to unbind this USB:

  echo ‘2-1.6‘ | sudo tee /sys/bus/usb/drivers/usb/unbind

  In fact, with no tee is OK, direct redirection can also. It is important to note that the string to echo is:"$bus_num"-"$port1_num"."$port2_num"
  This is probably the format.
• To re-bind the command, simply change the command in the unbind to bind.
  echo ‘2-1.6‘ | sudo tee /sys/bus/usb/drivers/usb/bind

That ' s it.

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Linux control USB bindings/unbinding