int snd_sof_debugfs_buf_item(struct snd_sof_dev *sdev,
			     void *base, size_t size,
			     const char *name, mode_t mode)
{
	struct snd_sof_dfsentry *dfse;

	if (!sdev)
		return -EINVAL;

	dfse = devm_kzalloc(sdev->dev, sizeof(*dfse), GFP_KERNEL);
	if (!dfse)
		return -ENOMEM;

	dfse->type = SOF_DFSENTRY_TYPE_BUF;
	dfse->buf = base;
	dfse->size = size;
	dfse->sdev = sdev;

#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_IPC_FLOOD_TEST)
	/*
	 * cache_buf is unused for SOF_DFSENTRY_TYPE_BUF debugfs entries.
	 * So, use it to save the results of the last IPC flood test.
	 */
	dfse->cache_buf = devm_kzalloc(sdev->dev, IPC_FLOOD_TEST_RESULT_LEN,
				       GFP_KERNEL);
	if (!dfse->cache_buf)
		return -ENOMEM;
#endif

	debugfs_create_file(name, mode, sdev->debugfs_root, dfse,
			    &sof_dfs_fops);
	/* add to dfsentry list */
	list_add(&dfse->list, &sdev->dfsentry_list);

	return 0;
}
Unknown