dma-buf: warn about dma_fence_array container rules v2

	array->base.error = PENDING_ERROR;

	/*

	 * dma_fence_array objects should never contain any other fence

	 * containers or otherwise we run into recursion and potential kernel

	 * stack overflow on operations on the dma_fence_array.

	 *

	 * The correct way of handling this is to flatten out the array by the

	 * caller instead.

	 *

	 * Enforce this here by checking that we don't create a dma_fence_array

	 * with any container inside.

	 */

	while (num_fences--)

		WARN_ON(dma_fence_is_container(fences[num_fences]));

	return array;

}

EXPORT_SYMBOL(dma_fence_array_create);