FLEXCAN_MCR_FRZ_ACK
while (timeout-- && !(priv->read(®s->mcr) & FLEXCAN_MCR_FRZ_ACK))
if (!(priv->read(®s->mcr) & FLEXCAN_MCR_FRZ_ACK))
while (timeout-- && (priv->read(®s->mcr) & FLEXCAN_MCR_FRZ_ACK))
if (priv->read(®s->mcr) & FLEXCAN_MCR_FRZ_ACK)