From: Markus Elfring <[email protected]>
Date: Mon, 6 Feb 2017 19:09:42 +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".

* 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 <[email protected]>
---
 drivers/hid/hid-core.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index ffb7e5d4ee19..51f3547ca44f 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -131,8 +131,9 @@ static int open_collection(struct hid_parser *parser, 
unsigned type)
        }
 
        if (parser->device->maxcollection == parser->device->collection_size) {
-               collection = kmalloc(sizeof(struct hid_collection) *
-                               parser->device->collection_size * 2, 
GFP_KERNEL);
+               collection = kmalloc_array(parser->device->collection_size * 2,
+                                          sizeof(*collection),
+                                          GFP_KERNEL);
                if (!collection)
                        return -ENOMEM;
 
-- 
2.11.1

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