linux-kernel - [PATCH 1/3] virtio_pci: Use kcalloc() in vp_request_msix

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Date:   Thu, 26 Jan 2017 22:46:00 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     virtualization@...ts.linux-foundation.org,
        Jason Wang <jasowang@...hat.com>,
        "Michael S. Tsirkin" <mst@...hat.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 1/3] virtio_pci: Use kcalloc() in vp_request_msix_vectors()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Thu, 26 Jan 2017 22:10:18 +0100

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

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/virtio/virtio_pci_common.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/virtio/virtio_pci_common.c b/drivers/virtio/virtio_pci_common.c
index 186cbab327b8..559a2b706093 100644
--- a/drivers/virtio/virtio_pci_common.c
+++ b/drivers/virtio/virtio_pci_common.c
@@ -117,7 +117,7 @@ static int vp_request_msix_vectors(struct virtio_device *vdev, int nvectors,
 	if (!vp_dev->msix_names)
 		goto error;
 	vp_dev->msix_affinity_masks
-		= kzalloc(nvectors * sizeof *vp_dev->msix_affinity_masks,
+		= kcalloc(nvectors, sizeof(*vp_dev->msix_affinity_masks),
 			  GFP_KERNEL);
 	if (!vp_dev->msix_affinity_masks)
 		goto error;
-- 
2.11.0