static void ipoctal_irq_tx()

in devices/ipoctal.c [203:219]

• 15 lines of code
• 2 McCabe index (conditional complexity)

static void ipoctal_irq_tx(struct ipoctal_channel *channel)
{
	unsigned char value;
	unsigned int *pointer_write = &channel->pointer_write;

	if (channel->nb_bytes == 0)
		return;

	spin_lock(&channel->lock);
	value = channel->tty_port.xmit_buf[*pointer_write];
	iowrite8(value, &channel->regs->w.thr);
	channel->stats.tx++;
	(*pointer_write)++;
	*pointer_write = *pointer_write % PAGE_SIZE;
	channel->nb_bytes--;
	spin_unlock(&channel->lock);
}