[PATCH 10/14] RDMA/cxgb4: Use kmalloc_array() in c4iw_id_table_alloc()

SF Markus Elfring
2017-02-08T21:20:42Z

Date: Wed, 8 Feb 2017 20:03:24 +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 type 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>
---
drivers/infiniband/hw/cxgb4/id_table.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb4/id_table.c b/drivers/infiniband/hw/cxgb4/id_table.c
index 0161ae6ad629..51a0b7244e35 100644
--- a/drivers/infiniband/hw/cxgb4/id_table.c
+++ b/drivers/infiniband/hw/cxgb4/id_table.c
@@ -93,8 +93,9 @@ int c4iw_id_table_alloc(struct c4iw_id_table *alloc, u32 start, u32 num,
alloc->last = 0;
alloc->max = num;
spin_lock_init(&alloc->lock);
- alloc->table = kmalloc(BITS_TO_LONGS(num) * sizeof(long),
- GFP_KERNEL);
+ alloc->table = kmalloc_array(BITS_TO_LONGS(num),
+ sizeof(*alloc->table),
+ GFP_KERNEL);
if (!alloc->table)
return -ENOMEM;

--
2.11.1