diff --git a/drivers/net/ethernet/sfc/siena.c b/drivers/net/ethernet/sfc/siena.c
index ed1cb6caa69d9bd73773097de1bd9d431939d0fd..891e9fb6abecaf88cb47e68287e475bc54657aee 100644
--- a/drivers/net/ethernet/sfc/siena.c
+++ b/drivers/net/ethernet/sfc/siena.c
@@ -948,8 +948,8 @@ static int siena_mtd_probe(struct efx_nic *efx)
 
 #endif /* CONFIG_SFC_MTD */
 
-unsigned int siena_check_caps(const struct efx_nic *efx,
-			      u8 flag, u32 offset)
+static unsigned int siena_check_caps(const struct efx_nic *efx,
+				     u8 flag, u32 offset)
 {
 	/* Siena did not support MC_CMD_GET_CAPABILITIES */
 	return 0;
@@ -1093,4 +1093,5 @@ const struct efx_nic_type siena_a0_nic_type = {
 			     1 << HWTSTAMP_FILTER_PTP_V1_L4_EVENT |
 			     1 << HWTSTAMP_FILTER_PTP_V2_L4_EVENT),
 	.rx_hash_key_size = 16,
+	.check_caps = siena_check_caps,
 };