int maple_add_packet()

in maple/maple.c [156:182]

• 24 lines of code
• 4 McCabe index (conditional complexity)

int maple_add_packet(struct maple_device *mdev, u32 function, u32 command,
	size_t length, void *data)
{
	int ret = 0;
	void *sendbuf = NULL;

	if (length) {
		sendbuf = kcalloc(length, 4, GFP_KERNEL);
		if (!sendbuf) {
			ret = -ENOMEM;
			goto out;
		}
		((__be32 *)sendbuf)[0] = cpu_to_be32(function);
	}

	mdev->mq->command = command;
	mdev->mq->length = length;
	if (length > 1)
		memcpy(sendbuf + 4, data, (length - 1) * 4);
	mdev->mq->sendbuf = sendbuf;

	mutex_lock(&maple_wlist_lock);
	list_add_tail(&mdev->mq->list, &maple_waitq);
	mutex_unlock(&maple_wlist_lock);
out:
	return ret;
}