drm/vmwgfx: avoid calling vzalloc with a 0 size in vmw_get_cap_3d_ioctl()

[pandora-kernel.git] / drivers / gpu / drm / vmwgfx / vmwgfx_ioctl.c

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
index 66917c6..bce4047 100644 (file)
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_ioctl.c
@@ -90,7 +90,7 @@ int vmw_get_cap_3d_ioctl(struct drm_device *dev, void *data,
        void *bounce;
        int ret;
 
-       if (unlikely(arg->pad64 != 0)) {
+       if (unlikely(arg->pad64 != 0 || arg->max_size == 0)) {
                DRM_ERROR("Illegal GET_3D_CAP argument.\n");
                return -EINVAL;
        }