tree: https://git.kernel.org/pub/scm/linux/kernel/git/sudeep.holla/linux.git for-next/scmi head: 2a3dd29cd558176610c7c9872804465a079b1c8e commit: f0a2500a2a050ea76fbc16f0b4d22d62f4a7ae05 [19/20] firmware: arm_scmi: Keep the discrete clock rates sorted config: arm64-randconfig-s032-20200709 (attached as .config) compiler: aarch64-linux-gcc (GCC) 9.3.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.2-37-gc9676a3b-dirty git checkout f0a2500a2a050ea76fbc16f0b4d22d62f4a7ae05 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' ARCH=arm64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +128 drivers/firmware/arm_scmi/clock.c 125 126 static int rate_cmp_func(const void *_r1, const void *_r2) 127 { 129 130 return r1 - r2; 131 } 132 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org