static int fence_chains_init()

in st-dma-fence-chain.c [111:160]

• 43 lines of code
• 7 McCabe index (conditional complexity)

static int fence_chains_init(struct fence_chains *fc, unsigned int count,
			     uint64_t (*seqno_fn)(unsigned int))
{
	unsigned int i;
	int err = 0;

	fc->chains = kvmalloc_array(count, sizeof(*fc->chains),
				    GFP_KERNEL | __GFP_ZERO);
	if (!fc->chains)
		return -ENOMEM;

	fc->fences = kvmalloc_array(count, sizeof(*fc->fences),
				    GFP_KERNEL | __GFP_ZERO);
	if (!fc->fences) {
		err = -ENOMEM;
		goto err_chains;
	}

	fc->tail = NULL;
	for (i = 0; i < count; i++) {
		fc->fences[i] = mock_fence();
		if (!fc->fences[i]) {
			err = -ENOMEM;
			goto unwind;
		}

		fc->chains[i] = mock_chain(fc->tail,
					   fc->fences[i],
					   seqno_fn(i));
		if (!fc->chains[i]) {
			err = -ENOMEM;
			goto unwind;
		}

		fc->tail = fc->chains[i];
	}

	fc->chain_length = i;
	return 0;

unwind:
	for (i = 0; i < count; i++) {
		dma_fence_put(fc->fences[i]);
		dma_fence_put(fc->chains[i]);
	}
	kvfree(fc->fences);
err_chains:
	kvfree(fc->chains);
	return err;
}