[PATCH 1/5] IB/qib: Use kcalloc() in qib_init_iba7322_funcs()

SF Markus Elfring
2017-04-05T13:51:52Z

From: Markus Elfring <elfring@users.sourceforge.net>
Date: Wed, 5 Apr 2017 09:43:54 +0200

* A multiplication for the size determination of a memory allocation
indicated that an array data structure should be processed.
Thus use the corresponding function "kcalloc".

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>
---
drivers/infiniband/hw/qib/qib_iba7322.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/qib/qib_iba7322.c b/drivers/infiniband/hw/qib/qib_iba7322.c
index af9f596bb68b..e4e4e675c89c 100644
--- a/drivers/infiniband/hw/qib/qib_iba7322.c
+++ b/drivers/infiniband/hw/qib/qib_iba7322.c
@@ -7324,8 +7324,9 @@ struct qib_devdata *qib_init_iba7322_funcs(struct pci_dev *pdev,
actual_cnt -= dd->num_pports;

tabsize = actual_cnt;
- dd->cspec->msix_entries = kzalloc(tabsize *
- sizeof(struct qib_msix_entry), GFP_KERNEL);
+ dd->cspec->msix_entries = kcalloc(tabsize,
+ sizeof(*dd->cspec->msix_entries),
+ GFP_KERNEL);
if (!dd->cspec->msix_entries)
tabsize = 0;

--
2.12.2