LOCK_TEST_WITH_RETURN(dev, filp);DRM_COPY_FROM_USER_IOCTL(clear, (drm_mga_clear_t__user *) data,sizeof(clear));if(sarea_priv->nbox > MGA_NR_SAREA_CLIPRECTS) sarea_priv->nbox = MGA_NR_SAREA_CLIPRECTS; WRAP_TEST_WITH_RETURN(dev_priv); mga_dma_dispatch_clear(dev, &clear);/*...