drm/i915: Use kcalloc instead of kzalloc to allocate array

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>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index 63880e2e5cfd4c2028f9933081606b57e2d5380f..50656339d922c31f17dafbf97890e98b7028d14e 100644 (file)
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -572,7 +572,7 @@ parse_device_mapping(struct drm_i915_private *dev_priv,
                DRM_DEBUG_KMS("no child dev is parsed from VBT\n");
                return;
        }
-       dev_priv->child_dev = kzalloc(sizeof(*p_child) * count, GFP_KERNEL);
+       dev_priv->child_dev = kcalloc(count, sizeof(*p_child), GFP_KERNEL);
        if (!dev_priv->child_dev) {
                DRM_DEBUG_KMS("No memory space for child device\n");
                return;