IB/hns: Use kmalloc_array() in hns_roce_cmd_use_events()

* 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@users.sourceforge.net>
Signed-off-by: Doug Ledford <dledford@redhat.com>

diff --git a/drivers/infiniband/hw/hns/hns_roce_cmd.c b/drivers/infiniband/hw/hns/hns_roce_cmd.c
index 8c1f7a6f84d23b1e33044e18bf82dd16a81423f5..b94dcd823ad1ef192c6ac3110c161c9e39989f3b 100644 (file)
--- a/drivers/infiniband/hw/hns/hns_roce_cmd.c
+++ b/drivers/infiniband/hw/hns/hns_roce_cmd.c
@@ -299,9 +299,9 @@ int hns_roce_cmd_use_events(struct hns_roce_dev *hr_dev)
        struct hns_roce_cmdq *hr_cmd = &hr_dev->cmd;
        int i;
 
-       hr_cmd->context = kmalloc(hr_cmd->max_cmds *
-                                 sizeof(struct hns_roce_cmd_context),
-                                 GFP_KERNEL);
+       hr_cmd->context = kmalloc_array(hr_cmd->max_cmds,
+                                       sizeof(*hr_cmd->context),
+                                       GFP_KERNEL);
        if (!hr_cmd->context)
                return -ENOMEM;