RDMA/hns: Use macro instead of magic number

This patch mainly uses CMD_CSQ_DESC_NUM instead of magic number in order
to improve readability.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

@@ -705,8 +705,8 @@ static int hns_roce_v2_cmq_init(struct hns_roce_dev *hr_dev)
 	int ret;
 
 	/* Setup the queue entries for command queue */
-	priv->cmq.csq.desc_num = 1024;
-	priv->cmq.crq.desc_num = 1024;
+	priv->cmq.csq.desc_num = CMD_CSQ_DESC_NUM;
+	priv->cmq.crq.desc_num = CMD_CRQ_DESC_NUM;
 
 	/* Setup the lock for command queue */
 	spin_lock_init(&priv->cmq.csq.lock);

drivers/infiniband/hw/hns/hns_roce_hw_v2.h

@@ -112,6 +112,9 @@
 	(step_idx == 1 && hop_num == 1) || \
 	(step_idx == 2 && hop_num == 2))
 
+#define CMD_CSQ_DESC_NUM		1024
+#define CMD_CRQ_DESC_NUM		1024
+
 enum {
 	NO_ARMED = 0x0,
 	REG_NXT_CEQE = 0x2,