linux-kernel - Re: [PATCH net-next v2] hinic: add firmware update support

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Date:   Wed, 15 Jul 2020 09:00:44 +0800
From:   "luobin (L)" <luobin9@...wei.com>
To:     Jakub Kicinski <kuba@...nel.org>
CC:     <davem@...emloft.net>, <linux-kernel@...r.kernel.org>,
        <netdev@...r.kernel.org>, <luoxianjun@...wei.com>,
        <yin.yinshi@...wei.com>, <cloud.wangxiaoyun@...wei.com>,
        <chiqijun@...wei.com>
Subject: Re: [PATCH net-next v2] hinic: add firmware update support

On 2020/7/15 2:37, Jakub Kicinski wrote:
> On Tue, 14 Jul 2020 20:54:33 +0800 Luo bin wrote:
>> add support to update firmware by the devlink flashing API
>>
>> Signed-off-by: Luo bin <luobin9@...wei.com>
> 
> Minor nits below, otherwise I think this looks good.
> 
>> +static int hinic_firmware_update(struct hinic_devlink_priv *priv,
>> +				 const struct firmware *fw)
>> +{
>> +	struct host_image_st host_image;
>> +	int err;
>> +
>> +	memset(&host_image, 0, sizeof(struct host_image_st));
>> +
>> +	if (!check_image_valid(priv, fw->data, fw->size, &host_image) ||
>> +	    !check_image_integrity(priv, &host_image, FW_UPDATE_COLD) ||
>> +	    !check_image_device_type(priv, host_image.device_id))
> 
> These helpers should also set an appropriate message in extack, so the
> user can see it on the command line / inside their application.
> 
>> +		return -EINVAL;
>> +
>> +	dev_info(&priv->hwdev->hwif->pdev->dev, "Flash firmware begin\n");
>> +
>> +	err = hinic_flash_fw(priv, fw->data, &host_image);
>> +	if (err) {
>> +		if (err == HINIC_FW_DISMATCH_ERROR)
>> +			dev_err(&priv->hwdev->hwif->pdev->dev, "Firmware image doesn't match this card, please use newer image, err: %d\n",
> 
> Here as well - please make sure to return an error messages through
> extack.
> 
>> +				err);
>> +		else
>> +			dev_err(&priv->hwdev->hwif->pdev->dev, "Send firmware image data failed, err: %d\n",
>> +				err);
>> +		return err;
>> +	}
>> +
>> +	dev_info(&priv->hwdev->hwif->pdev->dev, "Flash firmware end\n");
>> +
>> +	return 0;
>> +}
> 
>> @@ -1086,6 +1090,17 @@ static int nic_dev_init(struct pci_dev *pdev)
>>  		return PTR_ERR(hwdev);
>>  	}
>>  
>> +	devlink = hinic_devlink_alloc();
>> +	if (!devlink) {
>> +		dev_err(&pdev->dev, "Hinic devlink alloc failed\n");
>> +		err = -ENOMEM;
>> +		goto err_devlink_alloc;
>> +	}
>> +
>> +	priv = devlink_priv(devlink);
>> +	priv->hwdev = hwdev;
>> +	priv->devlink = devlink;
> 
> No need to remember the devlink pointer here, you can use
> priv_to_devlink(priv) to go from priv to devlink.
> 
>> +
>>  	num_qps = hinic_hwdev_num_qps(hwdev);
>>  	if (num_qps <= 0) {
>>  		dev_err(&pdev->dev, "Invalid number of QPS\n");
> .
> 
Will fix all. Thanks for your review.