title: module for usb pen drive
body: <p>I am making a module to do some basic stuff in my pen drive following the example <a href="http://www.linuxforu.com/2011/10/usb-drivers-in-linux-1/" rel="nofollow">here</a> . its stating that the usb storage(in my case pen drive) device uses usb-storage driver . I saw in hardware info that its usb_storage(which is same as usb-storage as when i do rmmod usb -storage it states that ERROR: Module usb_storage does not exist in /proc/modules) . I have done even lsmod with and without device its not showing any module name usb-storage. </p>
  
  <p>My doubt is simple how to know which module controles which device and i know it could be unloaded by rmmod (module name).</p>