linux-kernel - Re: Kernel 5.16.11 r8169 ethernet module do not build

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Date:   Sat, 26 Mar 2022 09:08:32 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Hatim Muhammed <hatimmohammed369@...il.com>,
        linux-kernel@...r.kernel.org
Subject: Re: Kernel 5.16.11 r8169 ethernet module do not build

Hi--

On 3/26/22 07:34, Hatim Muhammed wrote:
> 
> Hello everyone
> 
> I'm Hatim, I use Ubuntu 20.4.3 Kernel 5.11
> I downloaded kernel 5.16.11 and installed it as follow:
> 
> make defconfig
> make
> sudo make modules_install

In defconfig, I see
CONFIG_R8169=y

so the r8169 driver is built-in in the kernel binary image. It is not
being built as a loadable module (not as a .ko file).

> and now I can't connect to Ethernet
> I tried again (make defconfig => make => sudo make modules_install)
> But before make, I (make menuconfig) and set r8169 to <M>
> and tried again, But no, it did not build, there's no .ko file
> 
> Actually when I (lsmod) I see nothing, NO MODULES ARE LOADED
> I'm must be a fool to think things will be easy, but why r8169 driver
> refused to build?

The binary (.o) files are listed in the 'ls' output below.
That is normal for built-in drivers (CONFIG_R8169=y).

> Here are some diagnostics:
> 
> $ dmesg | grep -i eth
> [ 1.000377] r8169 0000:01:00.0 eth0: RTL8168e/8111e, 9c:8e:99:47:c7:0d, XID 2c2,
> IRQ 26
> [ 1.000385] r8169 0000:01:00.0 eth0: jumbo features [frames: 9194 bytes, tx
> checksumming: ko]
> [ 1.538290] r8169 0000:01:00.0 eno1: renamed from eth0
> [ 4.182471] RTL8211DN Gigabit Ethernet r8169-0-100:00: attached PHY driver
> (mii_bus:phy_addr=r8169-0-100:00, irq=MAC)
> 

I don't see any problems there...

> 
> $ ls ~/Desktop/Kernel/linux-5.16.11/drivers/net/ethernet/realtek
> 
> 8139cp.c
> 8139too.o
> Makefile atp.h
> modules.order
> r8169_firmware.c
> r8169_firmware.o
> r8169_main.o
> r8169_phy_config.o
> 8139too.c
> Kconfig atp.c
> built-in.a
> r8169.h
> r8169_firmware.h
> r8169_main.c
> r8169_phy_config.c
> 

-- 
~Randy