Why is my USB Keyboard LEDs are not Glowing?
 

Hello friends,

I have problem with my USB Keyboard. Its working properly in all cases. but whenever i press the capslock, numslock, scrolllock the leds are not glowing. I gone through code and observed i am getting error while submitting write URB. the error is -EPIPE. then i observed my control end pipe is stalled while i am trying to send messages. i am using usb-uhci.o. in UHCI i observed i am getting the problem of TD_CTRL_STALLED. if any one of u know how to solve please help me.
seshu