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Message-ID: <CAK8P3a22OtR5x01iNaSpJ3kM0MBd+dJshKOe6Cp42zukme2A+A@mail.gmail.com>
Date:   Fri, 17 Apr 2020 10:08:26 +0200
From:   Arnd Bergmann <arnd@...db.de>
To:     Saeed Mahameed <saeedm@...lanox.com>
Cc:     Masahiro Yamada <masahiroy@...nel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Jason Gunthorpe <jgg@...pe.ca>,
        Nicolas Pitre <nico@...xnic.net>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        Neil Armstrong <narmstrong@...libre.com>,
        Laurent Pinchart <Laurent.pinchart@...asonboard.com>,
        Leon Romanovsky <leon@...nel.org>,
        Kieran Bingham <kieran.bingham+renesas@...asonboard.com>,
        Jonas Karlman <jonas@...boo.se>,
        David Airlie <airlied@...ux.ie>,
        Jernej Skrabec <jernej.skrabec@...l.net>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Networking <netdev@...r.kernel.org>,
        linux-rdma <linux-rdma@...r.kernel.org>
Subject: Re: [RFC PATCH 2/2] net/mlx5: Kconfig: Use "uses" instead of "imply"

On Fri, Apr 17, 2020 at 3:12 AM Saeed Mahameed <saeedm@...lanox.com> wrote:

> @@ -7,10 +7,10 @@ config MLX5_CORE
>         tristate "Mellanox 5th generation network adapters (ConnectX series) core driver"
>         depends on PCI
>         select NET_DEVLINK
> -       imply PTP_1588_CLOCK
> -       imply VXLAN
> -       imply MLXFW
> -       imply PCI_HYPERV_INTERFACE
> +       uses PTP_1588_CLOCK
> +       uses VXLAN
> +       uses MLXFW
> +       uses PCI_HYPERV_INTERFACE

I have confirmed in the meantime that changing the PCI_HYPERV_INTERFACE
dependency is indeed required, in addition to PTP_1588_CLOCK and VXLAN
that the randconfig tests found earlier:

x86_64-linux-ld: drivers/net/ethernet/mellanox/mlx5/core/main.o: in
function `mlx5_unload':
main.c:(.text+0x325): undefined reference to `mlx5_hv_vhca_cleanup'

I also checked that there is no link failure with MLX5_CORE=y and MLXFW=m,
but only because of an IS_REACHABLE() check in mlxfw/mlxfw.h.
I suppose that should be changed back to IS_ENABLED() now along with
the Kconfig check.

      Arnd

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