diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c
index 1eb5a44a4ae6..3f49633bf985 100644
--- a/drivers/infiniband/hw/hfi1/user_sdma.c
+++ b/drivers/infiniband/hw/hfi1/user_sdma.c
@@ -202,9 +202,7 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt,
 	if (!pq->reqs)
 		goto pq_reqs_nomem;
 
-	pq->req_in_use = kcalloc(BITS_TO_LONGS(hfi1_sdma_comp_ring_size),
-				 sizeof(*pq->req_in_use),
-				 GFP_KERNEL);
+	pq->req_in_use = bitmap_zalloc(hfi1_sdma_comp_ring_size, GFP_KERNEL);
 	if (!pq->req_in_use)
 		goto pq_reqs_no_in_use;
 
@@ -251,7 +249,7 @@ cq_comps_nomem:
 cq_nomem:
 	kmem_cache_destroy(pq->txreq_cache);
 pq_txreq_nomem:
-	kfree(pq->req_in_use);
+	bitmap_free(pq->req_in_use);
 pq_reqs_no_in_use:
 	kfree(pq->reqs);
 pq_reqs_nomem:
@@ -298,7 +296,7 @@ int hfi1_user_sdma_free_queues(struct hfi1_filedata *fd,
 			pq->wait,
 			!atomic_read(&pq->n_reqs));
 		kfree(pq->reqs);
-		kfree(pq->req_in_use);
+		bitmap_free(pq->req_in_use);
 		kmem_cache_destroy(pq->txreq_cache);
 		flush_pq_iowait(pq);
 		kfree(pq);