linux-kernel - Re: [PATCH net] net: cavium: Fix build errors due to 'imply CAVIUM

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Date:   Thu, 02 Apr 2020 07:01:45 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     yuehaibing@...wei.com
Cc:     nishadkamdar@...il.com, nico@...xnic.net, masahiroy@...nel.org,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        gakula@...vell.com
Subject: Re: [PATCH net] net: cavium: Fix build errors due to 'imply
 CAVIUM_PTP'

From: YueHaibing <yuehaibing@...wei.com>
Date: Thu, 2 Apr 2020 21:23:44 +0800

> If CAVIUM_PTP is m and THUNDER_NIC_VF is y, build fails:
> 
> drivers/net/ethernet/cavium/thunder/nicvf_main.o: In function 'nicvf_remove':
> nicvf_main.c:(.text+0x1f0): undefined reference to 'cavium_ptp_put'
> drivers/net/ethernet/cavium/thunder/nicvf_main.o: In function `nicvf_probe':
> nicvf_main.c:(.text+0x557c): undefined reference to 'cavium_ptp_get'
> 
> THUNDER_NIC_VF imply CAVIUM_PTP, which allow the config now,
> Use IS_REACHABLE() to avoid the vmlinux link error for this case.
> 
> Reported-by: Hulk Robot <hulkci@...wei.com>
> Fixes: def2fbffe62c ("kconfig: allow symbols implied by y to become m")
> Signed-off-by: YueHaibing <yuehaibing@...wei.com>

Applied, thanks.