diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index e1317f581168..fac5c6e68011 100644
--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -764,7 +764,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries,
 	struct c4iw_create_cq_resp uresp;
 	struct c4iw_ucontext *ucontext = NULL;
 	int ret;
-	size_t memsize;
+	size_t memsize, hwentries;
 	struct c4iw_mm_entry *mm, *mm2;
 
 	PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
@@ -788,14 +788,29 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries,
 	 * entries must be multiple of 16 for HW.
 	 */
 	entries = roundup(entries, 16);
-	memsize = entries * sizeof *chp->cq.queue;
+
+	/*
+	 * Make actual HW queue 2x to avoid cdix_inc overflows.
+	 */
+	hwentries = entries * 2;
+
+	/*
+	 * Make HW queue at least 64 entries so GTS updates aren't too
+	 * frequent.
+	 */
+	if (hwentries < 64)
+		hwentries = 64;
+
+	memsize = hwentries * sizeof *chp->cq.queue;
 
 	/*
 	 * memsize must be a multiple of the page size if its a user cq.
 	 */
-	if (ucontext)
+	if (ucontext) {
 		memsize = roundup(memsize, PAGE_SIZE);
-	chp->cq.size = entries;
+		hwentries = memsize / sizeof *chp->cq.queue;
+	}
+	chp->cq.size = hwentries;
 	chp->cq.memsize = memsize;
 
 	ret = create_cq(&rhp->rdev, &chp->cq,
@@ -805,7 +820,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries,
 
 	chp->rhp = rhp;
 	chp->cq.size--;				/* status page */
-	chp->ibcq.cqe = chp->cq.size - 1;
+	chp->ibcq.cqe = entries - 2;
 	spin_lock_init(&chp->lock);
 	atomic_set(&chp->refcnt, 1);
 	init_waitqueue_head(&chp->wait);