tree: git://git.armlinux.org.uk/~rmk/linux-arm sa1100 head: 1f8db1c798717a711cdf8fc6b223b41e86ca5fcf commit: 736263d8aa20c99d5f40f129e4c9c28ddb3f95ef [21/57] ARM: sa1100: switch to accurate MPLL calculation config: arm-hackkit_defconfig (attached as .config) compiler: arm-linux-gnueabi-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 git remote add linux-arm git://git.armlinux.org.uk/~rmk/linux-arm git fetch --no-tags linux-arm sa1100 git checkout 736263d8aa20c99d5f40f129e4c9c28ddb3f95ef # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): 92 | int __init sa11xx_clk_init(void) | ^~~~~~~~~~~~~~~ vim +/sa11xx_clk_init +92 arch/arm/mach-sa1100/clock.c 97d654f8eb4b8fb Russell King 2006-03-15 91 d6c8204659eb184 Russell King 2016-08-31 @92 int __init sa11xx_clk_init(void) :::::: The code at line 92 was first introduced by commit :::::: d6c8204659eb1846c444997ee28fe9d7e5442f4e ARM: sa1100: convert to common clock framework :::::: TO: Russell King <rmk+kernel(a)armlinux.org.uk&gt; :::::: CC: Russell King <rmk+kernel(a)armlinux.org.uk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org