Re: [PATCH net-next v13 6/8] hinic3: Mailbox framework

[Paolo Abeni <pabeni@redhat.com>]

On 8/15/25 3:02 AM, Fan Gong wrote:
> +int hinic3_init_mbox(struct hinic3_hwdev *hwdev)
> +{
> +	struct hinic3_mbox *mbox;
> +	int err;
> +
> +	mbox = kzalloc(sizeof(*mbox), GFP_KERNEL);
> +	if (!mbox)
> +		return -ENOMEM;
> +
> +	err = hinic3_mbox_pre_init(hwdev, mbox);
> +	if (err)
> +		return err;

Given that all the other error paths resort to the usual goto statement,
this error handling is confusing (even there are no leak as
hinic3_mbox_pre_init() frees 'mbox' on error). Please use 'goto
err_kfree' here...

> +
> +	err = init_mgmt_msg_channel(mbox);
> +	if (err)
> +		goto err_destroy_workqueue;
> +
> +	err = hinic3_init_func_mbox_msg_channel(hwdev);
> +	if (err)
> +		goto err_uninit_mgmt_msg_ch;
> +
> +	err = alloc_mbox_wb_status(mbox);
> +	if (err) {
> +		dev_err(hwdev->dev, "Failed to alloc mbox write back status\n");
> +		goto err_uninit_func_mbox_msg_ch;
> +	}
> +
> +	prepare_send_mbox(mbox);
> +
> +	return 0;
> +
> +err_uninit_func_mbox_msg_ch:
> +	hinic3_uninit_func_mbox_msg_channel(hwdev);
> +
> +err_uninit_mgmt_msg_ch:
> +	uninit_mgmt_msg_channel(mbox);
> +
> +err_destroy_workqueue:
> +	destroy_workqueue(mbox->workq);

err_kfree:
> +	kfree(mbox);
> +
> +	return err;
> +}

And you can remove the kfree call from hinic3_mbox_pre_init().

/P