diff --git a/target/linux/oxnas/files/drivers/ata/sata_oxnas.c b/target/linux/oxnas/files/drivers/ata/sata_oxnas.c
index 64231a8c70..b55995ccad 100644
--- a/target/linux/oxnas/files/drivers/ata/sata_oxnas.c
+++ b/target/linux/oxnas/files/drivers/ata/sata_oxnas.c
@@ -1802,7 +1802,7 @@ static inline void sata_oxnas_reset_ucode(struct ata_host *ah, int force,
  * Prepare as much as possible for a command without involving anything that is
  * shared between ports.
  */
-static void sata_oxnas_qc_prep(struct ata_queued_cmd *qc)
+static enum ata_completion_errors sata_oxnas_qc_prep(struct ata_queued_cmd *qc)
 {
 	struct sata_oxnas_port_priv *pd;
 	int port_no = qc->ap->port_no;
@@ -1848,6 +1848,8 @@ static void sata_oxnas_qc_prep(struct ata_queued_cmd *qc)
 		/* tell it to wait */
 		iowrite32(SGDMA_CONTROL_NOGO, pd->sgdma_base + SGDMA_CONTROL);
 	}
+
+	return AC_ERR_OK;
 }
 
 static int sata_oxnas_port_start(struct ata_port *ap)