I followed this tutorial to setup wifi adapter for beaglebone (angstrom),
but when everything done, I input "reboot" and return. putty is stop and no reboot.
It's looks like this following problem.
This is a solution from this tutorial, but I do not know how to add boot option on U-Boot.
Tutorial link http://learn.adafruit.com/beaglebone/wifi
If you get an error device descriptor read/64, error -71, reboot and stop the boot process with the space bar. Then add the following boot option with the follow at the U-Boot prompt
setenv bootargs irqpoll RETURN