diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
index 068ed52b66c94d..b3c81a2e9d4643 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_pf_device.c
@@ -1490,7 +1490,7 @@ int cn23xx_get_vf_stats(struct octeon_device *oct, int vfidx,
 	mbox_cmd.q_no = vfidx * oct->sriov_info.rings_per_vf;
 	mbox_cmd.recv_len = 0;
 	mbox_cmd.recv_status = 0;
-	mbox_cmd.fn = (octeon_mbox_callback_t)cn23xx_get_vf_stats_callback;
+	mbox_cmd.fn = cn23xx_get_vf_stats_callback;
 	ctx.stats = stats;
 	atomic_set(&ctx.status, 0);
 	mbox_cmd.fn_arg = (void *)&ctx;
diff --git a/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c b/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c
index dd5d80fee24f0f..d2fcb3da484e3d 100644
--- a/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c
+++ b/drivers/net/ethernet/cavium/liquidio/cn23xx_vf_device.c
@@ -429,7 +429,7 @@ int cn23xx_octeon_pfvf_handshake(struct octeon_device *oct)
 	mbox_cmd.q_no = 0;
 	mbox_cmd.recv_len = 0;
 	mbox_cmd.recv_status = 0;
-	mbox_cmd.fn = (octeon_mbox_callback_t)octeon_pfvf_hs_callback;
+	mbox_cmd.fn = octeon_pfvf_hs_callback;
 	mbox_cmd.fn_arg = &status;
 
 	octeon_mbox_write(oct, &mbox_cmd);
diff --git a/drivers/net/ethernet/cavium/liquidio/octeon_mailbox.h b/drivers/net/ethernet/cavium/liquidio/octeon_mailbox.h
index d92bd7e164775b..9ac85d22c61571 100644
--- a/drivers/net/ethernet/cavium/liquidio/octeon_mailbox.h
+++ b/drivers/net/ethernet/cavium/liquidio/octeon_mailbox.h
@@ -57,7 +57,10 @@ union octeon_mbox_message {
 	} s;
 };
 
-typedef void (*octeon_mbox_callback_t)(void *, void *, void *);
+struct octeon_mbox_cmd;
+
+typedef void (*octeon_mbox_callback_t)(struct octeon_device *,
+				       struct octeon_mbox_cmd *, void *);
 
 struct octeon_mbox_cmd {
 	union octeon_mbox_message msg;