static inline int ipoctal_copy_write_buffer()

in devices/ipoctal.c [439:460]

• 20 lines of code
• 3 McCabe index (conditional complexity)

static inline int ipoctal_copy_write_buffer(struct ipoctal_channel *channel,
					    const unsigned char *buf,
					    int count)
{
	unsigned long flags;
	int i;
	unsigned int *pointer_read = &channel->pointer_read;

	/* Copy the bytes from the user buffer to the internal one */
	for (i = 0; i < count; i++) {
		if (i <= (PAGE_SIZE - channel->nb_bytes)) {
			spin_lock_irqsave(&channel->lock, flags);
			channel->tty_port.xmit_buf[*pointer_read] = buf[i];
			*pointer_read = (*pointer_read + 1) % PAGE_SIZE;
			channel->nb_bytes++;
			spin_unlock_irqrestore(&channel->lock, flags);
		} else {
			break;
		}
	}
	return i;
}