[PATCH 22/29] IB/mlx4: Use kmalloc_array() in alloc_proxy_bufs()

[SF Markus Elfring]

From: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
Date: Sat, 18 Feb 2017 16:56:52 +0100

* A multiplication for the size determination of a memory allocation
  indicated that an array data structure should be processed.
  Thus use the corresponding function "kmalloc_array".

  This issue was detected by using the Coccinelle software.

* Replace the specification of a data structure by a pointer dereference
  to make the corresponding size determination a bit safer according to
  the Linux coding style convention.

Signed-off-by: Markus Elfring <elfring@xxxxxxxxxxxxxxxxxxxxx>
---
 drivers/infiniband/hw/mlx4/qp.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 7d76f769233c..11fec4a8fae5 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -554,9 +554,9 @@ static int alloc_proxy_bufs(struct ib_device *dev, struct mlx4_ib_qp *qp)
 {
 	int i;
 
-	qp->sqp_proxy_rcv =
-		kmalloc(sizeof (struct mlx4_ib_buf) * qp->rq.wqe_cnt,
-			GFP_KERNEL);
+	qp->sqp_proxy_rcv = kmalloc_array(qp->rq.wqe_cnt,
+					  sizeof(*qp->sqp_proxy_rcv),
+					  GFP_KERNEL);
 	if (!qp->sqp_proxy_rcv)
 		return -ENOMEM;
 	for (i = 0; i < qp->rq.wqe_cnt; i++) {
-- 
2.11.1