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    SubjectRe: (.text.ks8851_probe_common+0x370): undefined reference to `__this_module'
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    On 2/21/21 10:12 PM, kernel test robot wrote:
    > Hi Marek,
    >
    > FYI, the error/warning still remains.
    >
    > tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
    > head: 31caf8b2a847214be856f843e251fc2ed2cd1075
    > commit: ef3631220d2b3d8d14cf64464760505baa60d6ac net: ks8851: Register MDIO bus and the internal PHY
    > date: 7 weeks ago
    > config: parisc-randconfig-r034-20210222 (attached as .config)
    > compiler: hppa-linux-gcc (GCC) 9.3.0
    > reproduce (this is a W=1 build):
    > wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
    > chmod +x ~/bin/make.cross
    > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ef3631220d2b3d8d14cf64464760505baa60d6ac
    > git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
    > git fetch --no-tags linus master
    > git checkout ef3631220d2b3d8d14cf64464760505baa60d6ac
    > # save the attached .config to linux build tree
    > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc
    >
    > If you fix the issue, kindly add following tag as appropriate
    > Reported-by: kernel test robot <lkp@intel.com>
    >
    > All errors (new ones prefixed by >>):
    >
    > hppa-linux-ld: drivers/net/ethernet/micrel/ks8851_common.o: in function `ks8851_probe_common':
    >>> (.text.ks8851_probe_common+0x370): undefined reference to `__this_module'
    >>> hppa-linux-ld: (.text.ks8851_probe_common+0x374): undefined reference to `__this_module'

    Hey Arnd-

    I wanted to see if you had any ideas about this problem.

    CONFIG_KS8851=y
    CONFIG_KS8851_MLL=m

    The problem is that 2 drivers share some common code, but in one case
    the shared code is builtin and for the other driver it is a loadable
    module. The common code is first built as builtin, so it does not have
    the "__this_module" symbol.

    Thanks.

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