netdev - Re: [PATCH -next] net: mlx5: Kconfig: Fix MLX5_CORE

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Date:   Fri, 30 Aug 2019 21:43:34 +0000
From:   Saeed Mahameed <saeedm@...lanox.com>
To:     "davem@...emloft.net" <davem@...emloft.net>,
        "maowenan@...wei.com" <maowenan@...wei.com>,
        "leon@...nel.org" <leon@...nel.org>
CC:     "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -next] net: mlx5: Kconfig: Fix MLX5_CORE_EN dependencies

On Tue, 2019-08-27 at 11:12 +0800, Mao Wenan wrote:
> When MLX5_CORE_EN=y and PCI_HYPERV_INTERFACE is not set, below errors

The issue happens when PCI_HYPERV_INTERFACE is a module and mlx5_core
is built-in.

> are found:
> drivers/net/ethernet/mellanox/mlx5/core/en_main.o: In function
> `mlx5e_nic_enable':
> en_main.c:(.text+0xb649): undefined reference to
> `mlx5e_hv_vhca_stats_create'
> drivers/net/ethernet/mellanox/mlx5/core/en_main.o: In function
> `mlx5e_nic_disable':
> en_main.c:(.text+0xb8c4): undefined reference to
> `mlx5e_hv_vhca_stats_destroy'
> 
> This because CONFIG_PCI_HYPERV_INTERFACE is newly introduced by
> 'commit 348dd93e40c1
> ("PCI: hv: Add a Hyper-V PCI interface driver for software
> backchannel interface"),
> Fix this by making MLX5_CORE_EN imply PCI_HYPERV_INTERFACE.
> 

the imply should be in MLX5_CORE not MLX5_CORE_EN since the
implementation also involves MLX5_CORE. 

I will prepare a patch with these fixups.

Thanks,
Saeed.