[PATCH 1/2] net/xsc: check possible null pointer dereference

[Renyong Wan]

This issue was reported by PVS studio, described as:
https://pvs-studio.com/en/docs/warnings/v522/

Signed-off-by: Rong Qian <qianr at yunsilicon.com>
Signed-off-by: Renyong Wan <wanry at yunsilicon.com>
---
 drivers/net/xsc/xsc_rx.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/xsc/xsc_rx.c b/drivers/net/xsc/xsc_rx.c
index a702b9592b..0100ccdcfd 100644
--- a/drivers/net/xsc/xsc_rx.c
+++ b/drivers/net/xsc/xsc_rx.c
@@ -308,7 +308,9 @@ xsc_rss_qp_create(struct xsc_ethdev_priv *priv, int port_id)
 	in->req_len = rte_cpu_to_be_32(cmd_len);
 
 	for (i = 0; i < priv->num_rq; i++) {
-		rxq_data = (*priv->rxqs)[i];
+		rxq_data = xsc_rxq_get(priv, i);
+		if (rxq_data == NULL)
+			return -EINVAL;
 		req = (struct xsc_cmd_create_qp_request *)(&in->data[0] + entry_len * i);
 		req->input_qpn = rte_cpu_to_be_16(0); /* useless for eth */
 		req->pa_num = rte_cpu_to_be_16(pa_num);
@@ -348,6 +350,8 @@ xsc_rss_qp_create(struct xsc_ethdev_priv *priv, int port_id)
 
 	for (i = 0; i < priv->num_rq; i++) {
 		rxq_data = xsc_rxq_get(priv, i);
+		if (rxq_data == NULL)
+			return -EINVAL;
 		rxq_data->wqes = rxq_data->rq_pas->addr;
 		if (!xsc_dev_is_vf(xdev))
 			rxq_data->rq_db = (uint32_t *)((uint8_t *)xdev->bar_addr +
-- 
2.25.1