I40E_QINT_RQCTL
ixl_wr(sc, I40E_QINT_RQCTL(I40E_INTR_NOTX_QUEUE),
ixl_wr(sc, I40E_QINT_RQCTL(i),
reg = ixl_rd(sc, I40E_QINT_RQCTL(I40E_INTR_NOTX_QUEUE));
ixl_wr(sc, I40E_QINT_RQCTL(I40E_INTR_NOTX_QUEUE), reg);
ixl_wr(sc, I40E_QINT_RQCTL(i), 0);