diff --git a/drivers/net/ethernet/sfc/falcon.c b/drivers/net/ethernet/sfc/falcon.c
index f8de382..4492129 100644
--- a/drivers/net/ethernet/sfc/falcon.c
+++ b/drivers/net/ethernet/sfc/falcon.c
@@ -336,7 +336,7 @@
  *
  * NB most hardware supports MSI interrupts
  */
-inline void falcon_irq_ack_a1(struct efx_nic *efx)
+static inline void falcon_irq_ack_a1(struct efx_nic *efx)
 {
 	efx_dword_t reg;
 
@@ -2343,7 +2343,7 @@
 	.remove = falcon_remove_nic,
 	.init = falcon_init_nic,
 	.dimension_resources = falcon_dimension_resources,
-	.fini = efx_port_dummy_op_void,
+	.fini = falcon_irq_ack_a1,
 	.monitor = falcon_monitor,
 	.map_reset_reason = falcon_map_reset_reason,
 	.map_reset_flags = falcon_map_reset_flags,
diff --git a/drivers/net/ethernet/sfc/nic.c b/drivers/net/ethernet/sfc/nic.c
index c17d659..2d0a584 100644
--- a/drivers/net/ethernet/sfc/nic.c
+++ b/drivers/net/ethernet/sfc/nic.c
@@ -1781,7 +1781,6 @@
 void efx_nic_fini_interrupt(struct efx_nic *efx)
 {
 	struct efx_channel *channel;
-	efx_oword_t reg;
 
 #ifdef CONFIG_RFS_ACCEL
 	free_irq_cpu_rmap(efx->net_dev->rx_cpu_rmap);
@@ -1792,12 +1791,6 @@
 	efx_for_each_channel(channel, efx)
 		free_irq(channel->irq, &efx->msi_context[channel->channel]);
 
-	/* ACK legacy interrupt */
-	if (efx_nic_rev(efx) >= EFX_REV_FALCON_B0)
-		efx_reado(efx, &reg, FR_BZ_INT_ISR0);
-	else
-		falcon_irq_ack_a1(efx);
-
 	/* Disable legacy interrupt */
 	if (efx->legacy_irq)
 		free_irq(efx->legacy_irq, efx);
diff --git a/drivers/net/ethernet/sfc/nic.h b/drivers/net/ethernet/sfc/nic.h
index 9120e8b..33aa120 100644
--- a/drivers/net/ethernet/sfc/nic.h
+++ b/drivers/net/ethernet/sfc/nic.h
@@ -308,7 +308,6 @@
 extern void efx_nic_fini_interrupt(struct efx_nic *efx);
 extern irqreturn_t efx_nic_fatal_interrupt(struct efx_nic *efx);
 extern irqreturn_t falcon_legacy_interrupt_a1(int irq, void *dev_id);
-extern void falcon_irq_ack_a1(struct efx_nic *efx);
 
 static inline int efx_nic_event_test_irq_cpu(struct efx_channel *channel)
 {