On Wed, 10 Jun 2009, abhishekkumar wrote: > Under the above mentioned directories I found the attached. > Hope it will help you. No, this is still not good. We want a file named "periodic" and a file named "registers". Try doing this instead: mkdir /debug mount -t debugfs none /debug cd /debug/usb/ehci/sb_05 The files should be there. If these commands don't work, send a pasted copy of the screen output so I can see what's wrong. Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html