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@intel.com>


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@renesas.com>
:::::: CC: Geert Uytterhoeven <geert+renesas@glider.be>

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