diff --git a/drivers/soundwire/qcom.c b/drivers/soundwire/qcom.c
index b2eb3090f4b4..08934d27f709 100644
--- a/drivers/soundwire/qcom.c
+++ b/drivers/soundwire/qcom.c
@@ -167,7 +167,8 @@ struct qcom_swrm_ctrl {
 	u32 intr_mask;
 	u8 rcmd_id;
 	u8 wcmd_id;
-	struct qcom_swrm_port_config pconfig[QCOM_SDW_MAX_PORTS];
+	/* Port numbers are 1 - 14 */
+	struct qcom_swrm_port_config pconfig[QCOM_SDW_MAX_PORTS + 1];
 	struct sdw_stream_runtime *sruntime[SWRM_MAX_DAIS];
 	enum sdw_slave_status status[SDW_MAX_DEVICES + 1];
 	int (*reg_read)(struct qcom_swrm_ctrl *ctrl, int reg, u32 *val);