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From: Stephen Langstaff <stephenlangstaff1@gmail.com>
Date: Mon, 13 May 2024 15:43:57 +0100
Message-ID: <CAHx5RXBCLPEZcrnUNx9GrQhQKtA-c4WSN6+vbAaqk6P4WSvrKA@mail.gmail.com>
Subject: drivers/net/dsa/dsa_loop_bdinfo.c build problems
To: andrew@lunn.ch, f.fainelli@gmain.com, olteanv@gmain.com
Cc: linux-kernel@vger.kernel.org
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Hi there.

I have come across an issue in the Linux kernel (6.8.7 and others) and
wondered whether I am doing something wrong?

In trying to test the dsa_loop module, I have found that the
dsa_loop_bdinfo module is not built when the following combination of
configuration items is set:

CONFIG_NET_DSA=3Dy
CONFIG_NET_DSA_LOOP=3Dm
CONFIG_FIXED_PHY=3Dy

This combination can easily be obtained using make menuconfig.

It seems that driver/net/Makefile=E2=80=99s inclusion of the dsa directory =
as
an obj-m precludes the building of dsa_loop_bdinfo.c (which is an
obj-y):

driver/net/Makefile:
=E2=80=A6
obj-$(CONFIG_NET_DSA) +=3D dsa/
=E2=80=A6

driver/net/dsa/Makefile:
=E2=80=A6
ifdef CONFIG_NET_DSA_LOOP
obj-$(CONFIG_FIXED_PHY)         +=3D dsa_loop_bdinfo.o
endif
=E2=80=A6