taglinefilesource code
SC_XMIT_BUSY725drivers/net/ppp.cif (ppp->flags & SC_XMIT_BUSY) {
SC_XMIT_BUSY729drivers/net/ppp.cppp->flags |= SC_XMIT_BUSY;
SC_XMIT_BUSY744drivers/net/ppp.cppp->flags &= ~SC_XMIT_BUSY;