linux-kernel - Re: [PATCH] pds_core: fix linking without CONFIG_DEBUG

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Date:   Mon, 1 May 2023 17:41:44 +0200
From:   Simon Horman <simon.horman@...igine.com>
To:     Arnd Bergmann <arnd@...nel.org>
Cc:     Shannon Nelson <shannon.nelson@....com>,
        Brett Creeley <brett.creeley@....com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, Arnd Bergmann <arnd@...db.de>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] pds_core: fix linking without CONFIG_DEBUG_FS

On Mon, May 01, 2023 at 05:06:14PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@...db.de>
> 
> The debugfs.o file is only built when the fs is enabled:
> 
> main.c:(.text+0x47c): undefined reference to `pdsc_debugfs_del_dev'
> main.c:(.text+0x8dc): undefined reference to `pdsc_debugfs_add_dev'
> main.c:(.exit.text+0x14): undefined reference to `pdsc_debugfs_destroy'
> main.c:(.init.text+0x8): undefined reference to `pdsc_debugfs_create'
> dev.c:(.text+0x988): undefined reference to `pdsc_debugfs_add_ident'
> core.c:(.text+0x6b0): undefined reference to `pdsc_debugfs_del_qcq'
> core.c:(.text+0x998): undefined reference to `pdsc_debugfs_add_qcq'
> core.c:(.text+0xf0c): undefined reference to `pdsc_debugfs_add_viftype'
> 
> Add dummy helper functions for these interfaces.
> 
> Fixes: 55435ea7729a ("pds_core: initial framework for pds_core PF driver")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>

Thanks Arnd,

this looks good to me.

Reviewed-by: Simon Horman <simon.horman@...igine.com>


While exercising this I noticed that building pds_core fails
if either CONFIG_AUXILIARY_BUS or NET_DEVLINK are not enabled.

I think the solution is for PFS_CORE to select both CONFIG_AUXILIARY_BUS
and NET_DEVLINK.

I am wondering if this is on anyone's radar.
If not I'll send a patch.