static int capinc_tty_write()

in capi/capi.c [1080:1113]

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

static int capinc_tty_write(struct tty_struct *tty,
			    const unsigned char *buf, int count)
{
	struct capiminor *mp = tty->driver_data;
	struct sk_buff *skb;

	pr_debug("capinc_tty_write(count=%d)\n", count);

	spin_lock_bh(&mp->outlock);
	skb = mp->outskb;
	if (skb) {
		mp->outskb = NULL;
		__skb_queue_tail(&mp->outqueue, skb);
		mp->outbytes += skb->len;
	}

	skb = alloc_skb(CAPI_DATA_B3_REQ_LEN + count, GFP_ATOMIC);
	if (!skb) {
		printk(KERN_ERR "capinc_tty_write: alloc_skb failed\n");
		spin_unlock_bh(&mp->outlock);
		return -ENOMEM;
	}

	skb_reserve(skb, CAPI_DATA_B3_REQ_LEN);
	skb_put_data(skb, buf, count);

	__skb_queue_tail(&mp->outqueue, skb);
	mp->outbytes += skb->len;
	spin_unlock_bh(&mp->outlock);

	handle_minor_send(mp);

	return count;
}