[dpdk-dev] [PATCH] net/virtio-user: fix dev_init in legacy-mem mode

[Maxime Coquelin]

Hi Xiao,

Next time, could you please devtools/check-git-log.sh script before
posting.

I tihnk the commit title should be changed to:
net/virtio-user: fix device init in legacy-mem mode

On 05/17/2018 09:35 AM, Xiao Wang wrote:
> In legacy-mem mode, memory event callback registering is not supported,
> we should not return error in dev_init on this case.
> 
> Fixes: 12ecb2f63b12 ("net/virtio-user: support memory hotplug")
> 
> Signed-off-by: Xiao Wang <xiao.w.wang at intel.com>
> Suggested-by: Tiwei Bie <tiwei.bie at intel.com>

I think the suggested-by line should go above the signed-off one,
as it was suggested before being implemented.

> ---
>   drivers/net/virtio/virtio_user/virtio_user_dev.c | 7 +++++--
>   1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> index 992a68757..bd16fbb60 100644
> --- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
> +++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
> @@ -445,8 +445,11 @@ virtio_user_dev_init(struct virtio_user_dev *dev, char *path, int queues,
>   
>   	if (rte_mem_event_callback_register(VIRTIO_USER_MEM_EVENT_CLB_NAME,
>   				virtio_user_mem_event_cb, dev)) {
> -		PMD_INIT_LOG(ERR, "Failed to register mem event callback\n");
> -		return -1;
> +		if (rte_errno != ENOTSUP) {
> +			PMD_INIT_LOG(ERR, "Failed to register mem event"
> +					" callback\n");
> +			return -1;
> +		}
>   	}
>   
>   	return 0;
> 

Apart above minor comments, the patch looks good to me:
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>

I'll handle the changes when applying.

Thanks,
Maxime