[PATCH 1/5] gtp: Use kmalloc_array() in gtp_hashtable_new()

[SF Markus Elfring]

From: Markus Elfring <elfr...@users.sourceforge.net>
Date: Wed, 25 Jan 2017 22:01:00 +0100

* Multiplications for the size determination of memory allocations
  indicated that array data structures should be processed.
  Thus use the corresponding function "kmalloc_array".

  This issue was detected by using the Coccinelle software.

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

Signed-off-by: Markus Elfring <elfr...@users.sourceforge.net>
---
 drivers/net/gtp.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/gtp.c b/drivers/net/gtp.c
index 8b6810bad54b..5d0d520ae40f 100644
--- a/drivers/net/gtp.c
+++ b/drivers/net/gtp.c
@@ -783,11 +783,13 @@ static int gtp_hashtable_new(struct gtp_dev *gtp, int 
hsize)
 {
        int i;
 
-       gtp->addr_hash = kmalloc(sizeof(struct hlist_head) * hsize, GFP_KERNEL);
+       gtp->addr_hash = kmalloc_array(hsize, sizeof(*gtp->addr_hash),
+                                      GFP_KERNEL);
        if (gtp->addr_hash == NULL)
                return -ENOMEM;
 
-       gtp->tid_hash = kmalloc(sizeof(struct hlist_head) * hsize, GFP_KERNEL);
+       gtp->tid_hash = kmalloc_array(hsize, sizeof(*gtp->tid_hash),
+                                     GFP_KERNEL);
        if (gtp->tid_hash == NULL)
                goto err1;
 
-- 
2.11.0