netdev - Re: [PATCH 6/6] vDPA: fix 'cast to restricted le16' warnings in vdpa_dev_net_config

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Date:   Mon, 6 Jun 2022 16:22:06 +0800
From:   "Zhu, Lingshan" <lingshan.zhu@...el.com>
To:     Jason Wang <jasowang@...hat.com>
Cc:     mst <mst@...hat.com>,
        virtualization <virtualization@...ts.linux-foundation.org>,
        netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH 6/6] vDPA: fix 'cast to restricted le16' warnings in
 vdpa_dev_net_config_fill()



On 6/2/2022 3:40 PM, Jason Wang wrote:
> On Thu, Jun 2, 2022 at 10:48 AM Zhu Lingshan <lingshan.zhu@...el.com> wrote:
>> This commit fixes spars warnings: cast to restricted __le16
>> in function vdpa_dev_net_config_fill()
>>
>> Signed-off-by: Zhu Lingshan <lingshan.zhu@...el.com>
>> ---
>>   drivers/vdpa/vdpa.c | 4 ++--
>>   1 file changed, 2 insertions(+), 2 deletions(-)
>>
>> diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c
>> index 50a11ece603e..2719ce9962fc 100644
>> --- a/drivers/vdpa/vdpa.c
>> +++ b/drivers/vdpa/vdpa.c
>> @@ -837,11 +837,11 @@ static int vdpa_dev_net_config_fill(struct vdpa_device *vdev, struct sk_buff *ms
>>                      config.mac))
>>                  return -EMSGSIZE;
>>
>> -       val_u16 = le16_to_cpu(config.status);
>> +       val_u16 = le16_to_cpu((__force __le16)config.status);
> Can we use virtio accessors like virtio16_to_cpu()?
I will work out a vdpa16_to_cpu()

Thanks,
Zhu Lingshan
>
> Thanks
>
>>          if (nla_put_u16(msg, VDPA_ATTR_DEV_NET_STATUS, val_u16))
>>                  return -EMSGSIZE;
>>
>> -       val_u16 = le16_to_cpu(config.mtu);
>> +       val_u16 = le16_to_cpu((__force __le16)config.mtu);
>>          if (nla_put_u16(msg, VDPA_ATTR_DEV_NET_CFG_MTU, val_u16))
>>                  return -EMSGSIZE;
>>
>> --
>> 2.31.1
>>