HelenOS sources

is_nested_descriptor  201 uspace/lib/usbdev/src/dp.c 	if (is_nested_descriptor(parser, data, next, parent)) {
is_nested_descriptor  227 uspace/lib/usbdev/src/dp.c 	while (is_nested_descriptor(parser, data, next_child, parent)) {
HelenOS homepage, sources at GitHub