AT91_UDP_TXCOMP
if (csr & (AT91_UDP_STALLSENT | AT91_UDP_TXCOMP)) {
csr &= ~(SET_FX | AT91_UDP_STALLSENT | AT91_UDP_TXCOMP);
if (csr & AT91_UDP_TXCOMP) {
csr &= ~(SET_FX | AT91_UDP_TXCOMP);
| AT91_UDP_STALLSENT | AT91_UDP_TXCOMP)
if (unlikely(csr & (AT91_UDP_TXCOMP | AT91_UDP_TXPKTRDY))) {
if (csr & AT91_UDP_TXCOMP) {
csr &= ~(SET_FX | AT91_UDP_TXCOMP);