ep_name
aprint_error("%s: ", ep_name(ep, buf, sizeof(buf)));
ep_name(rep, buf, sizeof(buf)));
ep_name(rep->ep_rep, buf, sizeof(buf)));
aprint_debug("%s ", ep_name(ep, buf, sizeof(buf)));
ep_name(rep, buf, sizeof(buf)));
static const char *ep_name(struct fdt_endpoint *, char *, int);