int channel_has_mbo()

in core.c [953:972]

• 17 lines of code
• 8 McCabe index (conditional complexity)

int channel_has_mbo(struct most_interface *iface, int id,
		    struct most_component *comp)
{
	struct most_channel *c = iface->p->channel[id];
	unsigned long flags;
	int empty;

	if (unlikely(!c))
		return -EINVAL;

	if (c->pipe0.refs && c->pipe1.refs &&
	    ((comp == c->pipe0.comp && c->pipe0.num_buffers <= 0) ||
	     (comp == c->pipe1.comp && c->pipe1.num_buffers <= 0)))
		return 0;

	spin_lock_irqsave(&c->fifo_lock, flags);
	empty = list_empty(&c->fifo);
	spin_unlock_irqrestore(&c->fifo_lock, flags);
	return !empty;
}