int ps3av_do_pkt()

in ps3av.c [287:332]

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

int ps3av_do_pkt(u32 cid, u16 send_len, size_t usr_buf_size,
		 struct ps3av_send_hdr *buf)
{
	int res = 0;
	u32 *table;

	BUG_ON(!ps3av);

	mutex_lock(&ps3av->mutex);

	table = ps3av_search_cmd_table(cid, PS3AV_CID_MASK);
	BUG_ON(!table);
	BUG_ON(send_len < PS3AV_HDR_SIZE);
	BUG_ON(usr_buf_size < send_len);
	BUG_ON(usr_buf_size > PS3AV_BUF_SIZE);

	/* create header */
	ps3av_set_hdr(cid, send_len, buf);

	/* send packet via vuart */
	res = ps3av_send_cmd_pkt(buf, &ps3av->recv_buf.reply_hdr, send_len,
				 usr_buf_size);
	if (res < 0) {
		printk(KERN_ERR
		       "%s: ps3av_send_cmd_pkt() failed (result=%d)\n",
		       __func__, res);
		goto err;
	}

	/* process reply packet */
	res = ps3av_process_reply_packet(buf, &ps3av->recv_buf.reply_hdr,
					 usr_buf_size);
	if (res < 0) {
		printk(KERN_ERR "%s: put_return_status() failed (result=%d)\n",
		       __func__, res);
		goto err;
	}

	mutex_unlock(&ps3av->mutex);
	return 0;

err:
	mutex_unlock(&ps3av->mutex);
	printk(KERN_ERR "%s: failed cid:%x res:%d\n", __func__, cid, res);
	return res;
}