From 24bb5a0ce39c51a2e2602c947f218a19e4b26d7d Mon Sep 17 00:00:00 2001
From: Thomas Meyer <thomas@m3y3r.de>
Date: Tue, 29 Nov 2011 22:08:00 +0100
Subject: vmwgfx: Use kcalloc instead of kzalloc to allocate array
Git-commit: 24bb5a0ce39c51a2e2602c947f218a19e4b26d7d
Patch-mainline: v3.2-rc5

The advantage of kcalloc is, that will prevent integer overflows which could
result from the multiplication of number of elements and size and it is also
a bit nicer to read.

The semantic patch that makes this change is available
in https://lkml.org/lkml/2011/11/25/107

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Acked-by: Michal Srb <msrb@suse.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index 3f63435..5ff561d 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -140,7 +140,7 @@ int vmw_present_ioctl(struct drm_device *dev, void *data,
 		goto out_clips;
 	}
 
-	clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
+	clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 	if (clips == NULL) {
 		DRM_ERROR("Failed to allocate clip rect list.\n");
 		ret = -ENOMEM;
@@ -232,7 +232,7 @@ int vmw_present_readback_ioctl(struct drm_device *dev, void *data,
 		goto out_clips;
 	}
 
-	clips = kzalloc(num_clips * sizeof(*clips), GFP_KERNEL);
+	clips = kcalloc(num_clips, sizeof(*clips), GFP_KERNEL);
 	if (clips == NULL) {
 		DRM_ERROR("Failed to allocate clip rect list.\n");
 		ret = -ENOMEM;

