Hi Kuninori, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git sh-pfc-for-v5.10 head: 46d5baf0885ac8e1a799bdc4dc396dab403ccdf9 commit: 8449bfa9e6a9f7ec9b9037a2e61784140b673823 [5/8] pinctrl: sh-pfc: Collect Renesas related CONFIGs in one place config: c6x-randconfig-s031-20200923 (attached as .config) compiler: c6x-elf-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: v0.6.2-201-g24bdaac6-dirty git checkout 8449bfa9e6a9f7ec9b9037a2e61784140b673823 # 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=c6x If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> drivers/pinctrl/sh-pfc/pinctrl-rzn1.c:183:52: sparse: sparse: dubious: x | !y drivers/pinctrl/sh-pfc/pinctrl-rzn1.c:189:52: sparse: sparse: dubious: x | !y # https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/commit/?id=8449bfa9e6a9f7ec9b9037a2e61784140b673823 git remote add renesas-drivers https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git git fetch --no-tags renesas-drivers sh-pfc-for-v5.10 git checkout 8449bfa9e6a9f7ec9b9037a2e61784140b673823 vim +183 drivers/pinctrl/sh-pfc/pinctrl-rzn1.c 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 174 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 175 static void rzn1_hw_set_lock(struct rzn1_pinctrl *ipctl, u8 lock, u8 value) 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 176 { 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 177 /* 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 178 * The pinmux configuration is locked by writing the physical address of 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 179 * the status_protect register to itself. It is unlocked by writing the 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 180 * address | 1. 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 181 */ 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 182 if (lock & LOCK_LEVEL1) { 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 @183 u32 val = ipctl->lev1_protect_phys | !(value & LOCK_LEVEL1); 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 184 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 185 writel(val, &ipctl->lev1->status_protect); 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 186 } 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 187 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 188 if (lock & LOCK_LEVEL2) { 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 189 u32 val = ipctl->lev2_protect_phys | !(value & LOCK_LEVEL2); 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 190 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 191 writel(val, &ipctl->lev2->status_protect); 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 192 } 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 193 } 4e53b5004745ef drivers/pinctrl/pinctrl-rzn1.c Phil Edworthy 2018-09-26 194 :::::: The code at line 183 was first introduced by commit :::::: 4e53b5004745ef26a37bca4933b2d3ea71313f2a pinctrl: renesas: Renesas RZ/N1 pinctrl driver :::::: TO: Phil Edworthy <phil.edworthy@xxxxxxxxxxx> :::::: CC: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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