[PATCH] IB/hfi1: Use bitmap_zalloc() when applicable

[Christophe JAILLET]

Use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid some
open-coded arithmetic in allocator arguments.

Also change the corresponding 'kfree()' into 'bitmap_free()' to keep
consistency.

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
 drivers/infiniband/hw/hfi1/user_sdma.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/infiniband/hw/hfi1/user_sdma.c b/drivers/infiniband/hw/hfi1/user_sdma.c
index 5b11c8282744..a71c5a36ceba 100644
--- a/drivers/infiniband/hw/hfi1/user_sdma.c
+++ b/drivers/infiniband/hw/hfi1/user_sdma.c
@@ -161,9 +161,7 @@ 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;
 
@@ -210,7 +208,7 @@ int hfi1_user_sdma_alloc_queues(struct hfi1_ctxtdata *uctxt,
 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:
@@ -257,7 +255,7 @@ 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);
-- 
2.30.2