Staging: rdma: ipath: Use kcalloc instead of kzalloc to allocate array

The advantage of kcalloc is, that will prevent integer overflows which
could result from the multiplication of number of elements and size and
it is also a bit nicer to read.
Signed-off-by: NShraddha Barke <shraddha.6596@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/rdma/ipath/ipath_init_chip.c

@@ -264,7 +264,7 @@ static int init_chip_first(struct ipath_devdata *dd)
 	 * Allocate full portcnt array, rather than just cfgports, because
 	 * cleanup iterates across all possible ports.
 	 */
-	dd->ipath_pd = kzalloc(sizeof(*dd->ipath_pd) * dd->ipath_portcnt,
+	dd->ipath_pd = kcalloc(dd->ipath_portcnt, sizeof(*dd->ipath_pd),
 			       GFP_KERNEL);
 
 	if (!dd->ipath_pd) {

drivers/staging/rdma/ipath/ipath_qp.c

@@ -1027,7 +1027,7 @@ int ipath_init_qp_table(struct ipath_ibdev *idev, int size)
 	idev->qp_table.last = 1;	/* QPN 0 and 1 are special. */
 	idev->qp_table.max = size;
 	idev->qp_table.nmaps = 1;
-	idev->qp_table.table = kzalloc(size * sizeof(*idev->qp_table.table),
+	idev->qp_table.table = kcalloc(size, sizeof(*idev->qp_table.table),
 				       GFP_KERNEL);
 	if (idev->qp_table.table == NULL) {
 		ret = -ENOMEM;

drivers/staging/rdma/ipath/ipath_verbs.c

@@ -2059,7 +2059,7 @@ int ipath_register_ib_device(struct ipath_devdata *dd)
 	 * the LKEY).  The remaining bits act as a generation number or tag.
 	 */
 	idev->lk_table.max = 1 << ib_ipath_lkey_table_size;
-	idev->lk_table.table = kzalloc(idev->lk_table.max *
+	idev->lk_table.table = kcalloc(idev->lk_table.max,
 				       sizeof(*idev->lk_table.table),
 				       GFP_KERNEL);
 	if (idev->lk_table.table == NULL) {