tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git staging-testing head: ba839b32d6f76a68919ed838e9375c47ca05a91a commit: ba839b32d6f76a68919ed838e9375c47ca05a91a [222/222] staging: media: hantro: remove parentheses reproduce: # apt-get install sparse # sparse version: git checkout ba839b32d6f76a68919ed838e9375c47ca05a91a make ARCH=x86_64 allmodconfig make C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): vim +42 drivers/mtd/nand/raw/nand_legacy.c 3d4af7c195850c Boris Brezillon 2018-09-07 32 3d4af7c195850c Boris Brezillon 2018-09-07 33 /** 3d4af7c195850c Boris Brezillon 2018-09-07 34 * nand_read_byte16 - [DEFAULT] read one byte endianness aware from the chip 3d4af7c195850c Boris Brezillon 2018-09-07 35 * @chip: NAND chip object 3d4af7c195850c Boris Brezillon 2018-09-07 36 * 3d4af7c195850c Boris Brezillon 2018-09-07 37 * Default read function for 16bit buswidth with endianness conversion. 3d4af7c195850c Boris Brezillon 2018-09-07 38 * 3d4af7c195850c Boris Brezillon 2018-09-07 39 */ 3d4af7c195850c Boris Brezillon 2018-09-07 40 static uint8_t nand_read_byte16(struct nand_chip *chip) 3d4af7c195850c Boris Brezillon 2018-09-07 41 { 3d4af7c195850c Boris Brezillon 2018-09-07 @42 return (uint8_t) cpu_to_le16(readw(chip->legacy.IO_ADDR_R)); 3d4af7c195850c Boris Brezillon 2018-09-07 43 } 3d4af7c195850c Boris Brezillon 2018-09-07 44 :::::: The code at line 42 was first introduced by commit :::::: 3d4af7c195850cfccaddc2cf03b010b95236b695 mtd: rawnand: Move legacy code to nand_legacy.c :::::: 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