powerpc-linux-ld: warning: orphan section `.init.plt' from `drivers/mfd/rsmu_core.o' being placed in section `.init.plt'

[kernel test robot]

Hi Min,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a4849f6000e29235a2707f22e39da6b897bb9543
commit: a1867f85e06edacd82956d3422caa2b9074f4321 mfd: Add Renesas Synchronization Management Unit (SMU) support
date:   5 months ago
config: powerpc-randconfig-r034-20211123 (https://download.01.org/0day-ci/archive/20211126/202111261824.M3qMRnY5-lkp@xxxxxxxxx/config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
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=a1867f85e06edacd82956d3422caa2b9074f4321
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout a1867f85e06edacd82956d3422caa2b9074f4321
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=powerpc SHELL=/bin/bash

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> powerpc-linux-ld: warning: orphan section `.init.plt' from `drivers/mfd/rsmu_core.o' being placed in section `.init.plt'
   powerpc-linux-ld: arch/powerpc/sysdev/cpm_gpio.o:(.rodata+0xd0): undefined reference to `cpm1_gpiochip_add16'
   powerpc-linux-ld: arch/powerpc/sysdev/cpm_gpio.o:(.rodata+0x194): undefined reference to `cpm1_gpiochip_add32'
   powerpc-linux-ld: arch/powerpc/sysdev/cpm_gpio.o:(.rodata+0x258): undefined reference to `cpm1_gpiochip_add16'
   powerpc-linux-ld: arch/powerpc/sysdev/cpm_gpio.o:(.rodata+0x31c): undefined reference to `cpm1_gpiochip_add16'
   powerpc-linux-ld: arch/powerpc/platforms/8xx/m8xx_setup.o: in function `cpm_cascade':
   m8xx_setup.c:(.text+0x28): undefined reference to `cpm_get_irq'
   powerpc-linux-ld: arch/powerpc/platforms/8xx/m8xx_setup.o: in function `mpc8xx_set_rtc_time':
   m8xx_setup.c:(.text+0x46): undefined reference to `mpc8xx_immr'
   powerpc-linux-ld: m8xx_setup.c:(.text+0x52): undefined reference to `mpc8xx_immr'
   powerpc-linux-ld: arch/powerpc/platforms/8xx/m8xx_setup.o: in function `mpc8xx_get_rtc_time':
   m8xx_setup.c:(.text+0x92): undefined reference to `mpc8xx_immr'
   powerpc-linux-ld: m8xx_setup.c:(.text+0x9e): undefined reference to `mpc8xx_immr'
   powerpc-linux-ld: arch/powerpc/platforms/8xx/m8xx_setup.o: in function `mpc8xx_restart':
   m8xx_setup.c:(.text+0xda): undefined reference to `mpc8xx_immr'
   powerpc-linux-ld: arch/powerpc/platforms/8xx/m8xx_setup.o:m8xx_setup.c:(.text+0xe6): more undefined references to `mpc8xx_immr' follow
   powerpc-linux-ld: arch/powerpc/platforms/8xx/m8xx_setup.o: in function `mpc8xx_pics_init':
   m8xx_setup.c:(.init.text+0x2c8): undefined reference to `cpm_pic_init'

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx