IPC_FLOOD_TEST_RESULT_LEN
memset(priv->buf, 0, IPC_FLOOD_TEST_RESULT_LEN);
snprintf(priv->buf, IPC_FLOOD_TEST_RESULT_LEN,
IPC_FLOOD_TEST_RESULT_LEN - strlen(priv->buf),
IPC_FLOOD_TEST_RESULT_LEN - strlen(priv->buf),
priv->buf = devm_kmalloc(dev, IPC_FLOOD_TEST_RESULT_LEN, GFP_KERNEL);