tree: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git ib-for-each-clump head: 3358c938236d6a1be51124fbbb2698e50689d382 commit: 3358c938236d6a1be51124fbbb2698e50689d382 [4/4] gpio: xilinx: Utilize generic bitmap_get_value and _set_value. config: alpha-randconfig-s031-20200716 (attached as .config) compiler: alpha-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: v0.6.2-49-g707c5017-dirty git checkout 3358c938236d6a1be51124fbbb2698e50689d382 # 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=alpha If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> include/linux/bitmap.h:639:45: sparse: sparse: shift too big (64) for type unsigned long >> include/linux/bitmap.h:639:45: sparse: sparse: shift too big (64) for type unsigned long include/linux/bitmap.h:594:63: sparse: sparse: shift too big (64) for type unsigned long >> include/linux/bitmap.h:639:45: sparse: sparse: shift too big (64) for type unsigned long >> include/linux/bitmap.h:638:17: sparse: sparse: invalid access past the end of 'old' (8 8) vim +639 include/linux/bitmap.h 169c474fb22d8a5 William Breathitt Gray 2019-12-04 613 e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 614 /** e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 615 * bitmap_set_value - set n-bit value within a memory region e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 616 * @map: address to the bitmap memory region e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 617 * @value: value of nbits e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 618 * @start: bit offset of the n-bit value e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 619 * @nbits: size of value in bits e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 620 */ e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 621 static inline void bitmap_set_value(unsigned long *map, e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 622 unsigned long value, e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 623 unsigned long start, unsigned long nbits) e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 624 { e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 625 const size_t index = BIT_WORD(start); e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 626 const unsigned long offset = start % BITS_PER_LONG; e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 627 const unsigned long ceiling = roundup(start + 1, BITS_PER_LONG); e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 628 const unsigned long space = ceiling - start; e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 629 e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 630 value &= GENMASK(nbits - 1, 0); e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 631 e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 632 if (space >= nbits) { e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 633 map[index] &= ~(GENMASK(nbits + offset - 1, offset)); e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 634 map[index] |= value << offset; e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 635 } else { e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 636 map[index] &= ~BITMAP_FIRST_WORD_MASK(start); e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 637 map[index] |= value << offset; e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 @638 map[index + 1] &= ~BITMAP_LAST_WORD_MASK(start + nbits); e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 @639 map[index + 1] |= (value >> space); e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 640 } e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 641 } e77c9b6f35c4bdf Syed Nayyar Waris 2020-06-27 642 :::::: The code at line 639 was first introduced by commit :::::: e77c9b6f35c4bdfa60c52f137a4b48c04ab87627 bitops: Introduce the for_each_set_clump macro :::::: TO: Syed Nayyar Waris <syednwaris@xxxxxxxxx> :::::: CC: Linus Walleij <linus.walleij@xxxxxxxxxx> --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
Attachment:
.config.gz
Description: application/gzip
