IPA_MODEM_STATE_STOPPED
state = atomic_cmpxchg(&ipa->modem_state, IPA_MODEM_STATE_STOPPED,
if (state != IPA_MODEM_STATE_STOPPED)
atomic_set(&ipa->modem_state, IPA_MODEM_STATE_STOPPED);
if (state == IPA_MODEM_STATE_STOPPED)
atomic_set(&ipa->modem_state, IPA_MODEM_STATE_STOPPED);