592 	u32 reg_msr, reg_mid;  in at91_mailbox_read()  local
594 	reg_msr = at91_read(priv, AT91_MSR(mb));  in at91_mailbox_read()
595 	if (!(reg_msr & AT91_MSR_MRDY))  in at91_mailbox_read()
617 	*timestamp = FIELD_GET(AT91_MSR_MTIMESTAMP_MASK, reg_msr) << 16;  in at91_mailbox_read()
619 	cf->len = can_cc_dlc2len(FIELD_GET(AT91_MSR_MDLC_MASK, reg_msr));  in at91_mailbox_read()
621 	if (reg_msr & AT91_MSR_MRTR) {  in at91_mailbox_read()
631 	if (unlikely(mb == get_mb_rx_last(priv) && reg_msr & AT91_MSR_MMI))  in at91_mailbox_read()
654 	u32 reg_msr;  in at91_irq_tx()  local
672 		reg_msr = at91_read(priv, AT91_MSR(mb));  in at91_irq_tx()
673 		if (unlikely(!(reg_msr & AT91_MSR_MRDY &&  in at91_irq_tx()
674 			       ~reg_msr & AT91_MSR_MABT)))  in at91_irq_tx()