tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel head: 9fe5af9feaa423a42728bfe2911f8c3127bfb9a0 commit: efb9a1234b11999ea8993a81465d9a2c7577546f [12/36] include condition in the BUG_ON/WARN_ON output config: nios2-randconfig-s001-20200524 (attached as .config) compiler: nios2-linux-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-193-gb8fad4bc-dirty git checkout efb9a1234b11999ea8993a81465d9a2c7577546f # save the attached .config to linux build tree make W=1 C=1 ARCH=nios2 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +3251 drivers/mtd/nand/raw/nand_base.c ba84fb5952af114 drivers/mtd/nand/nand_base.c Brian Norris 2014-01-03 3242 85e08e5864458b2 drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3243 static void nand_wait_readrdy(struct nand_chip *chip) 85e08e5864458b2 drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3244 { 52f05b6b87decfc drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3245 const struct nand_sdr_timings *sdr; 52f05b6b87decfc drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3246 85e08e5864458b2 drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3247 if (!(chip->options & NAND_NEED_READRDY)) 85e08e5864458b2 drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3248 return; 85e08e5864458b2 drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3249 52f05b6b87decfc drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3250 sdr = nand_get_sdr_timings(&chip->data_interface); 52f05b6b87decfc drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 @3251 WARN_ON(nand_wait_rdy_op(chip, PSEC_TO_MSEC(sdr->tR_max), 0)); 85e08e5864458b2 drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3252 } 85e08e5864458b2 drivers/mtd/nand/raw/nand_base.c Boris Brezillon 2018-07-27 3253 :::::: The code at line 3251 was first introduced by commit :::::: 52f05b6b87decfc74245ac16b4ae18e321b5ae98 mtd: rawnand: Add the nand_wait_rdy_op() helper and use it :::::: TO: Boris Brezillon <boris.brezillon(a)bootlin.com&gt; :::::: CC: Miquel Raynal <miquel.raynal(a)bootlin.com&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org