/* We intentionally don't set "activity" to 1, here. */
        }
        if (dma_reason[3] & BCM43xx_DMAIRQ_RX_DONE) {
-               if (likely(bcm->current_core->rev < 5)) {
-                       if (bcm43xx_using_pio(bcm))
-                               bcm43xx_pio_rx(bcm->current_core->pio->queue3);
-                       else
-                               bcm43xx_dma_rx(bcm->current_core->dma->rx_ring1);
-                       activity = 1;
-               } else
-                       assert(0);
+               if (bcm43xx_using_pio(bcm))
+                       bcm43xx_pio_rx(bcm->current_core->pio->queue3);
+               else
+                       bcm43xx_dma_rx(bcm->current_core->dma->rx_ring1);
+               activity = 1;
        }
        bcmirq_handled(BCM43xx_IRQ_RX);
 
        if (reason & BCM43xx_IRQ_XMIT_STATUS) {
-               if (bcm->current_core->rev >= 5) {
-                       handle_irq_transmit_status(bcm);
-                       activity = 1;
-               }
+               handle_irq_transmit_status(bcm);
+               activity = 1;
                //TODO: In AP mode, this also causes sending of powersave responses.
                bcmirq_handled(BCM43xx_IRQ_XMIT_STATUS);
        }