diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 1202b4c74da76e19b779783d9bdc94401dd6998e..09f09ea7a5e55b4e5da927f6a78947d9fe5e47d8 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -432,7 +432,12 @@ int i40e_add_del_fdir(struct i40e_vsi *vsi,
 		ret = -EINVAL;
 	}
 
-	/* The buffer allocated here is freed by the i40e_clean_tx_ring() */
+	/* The buffer allocated here will be normally be freed by
+	 * i40e_clean_fdir_tx_irq() as it reclaims resources after transmit
+	 * completion. In the event of an error adding the buffer to the FDIR
+	 * ring, it will immediately be freed. It may also be freed by
+	 * i40e_clean_tx_ring() when closing the VSI.
+	 */
 	return ret;
 }