the following patch was just integrated into master:
Author: Nico Huber <nico.huber(a)secunet.com>
Date: Mon May 21 16:19:05 2012 +0200
libpayload: Add clear_feature() function to USB framework
This function will be used by the USB hub driver.
Signed-off-by: Nico Huber <nico.huber(a)secunet.com>
Reviewed-By: Patrick Georgi <patrick(a)georgi-clan.de> at Fri Jun 1 12:21:13 2012, giving +2
See http://review.coreboot.org/1079 for details.