tree: https://github.com/0day-ci/linux/commits/UPDATE-20200520-051842/Emil-Veli... head: 0ae605b3f9c51e182b11da825f5fa8948bc88af9 commit: 0ae605b3f9c51e182b11da825f5fa8948bc88af9 [1/1] linux/bits.h: adjust GENMASK_INPUT_CHECK() check config: powerpc-randconfig-r015-20200519 (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project e6658079aca6d971b4e9d7137a3a2ecbc9c34aec) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu git checkout 0ae605b3f9c51e182b11da825f5fa8948bc88af9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): In file included from drivers/video/fbdev/sis/init.c:59: In file included from drivers/video/fbdev/sis/init.h:64: In file included from arch/powerpc/include/asm/io.h:27: In file included from include/linux/device.h:15: In file included from include/linux/dev_printk.h:16: In file included from include/linux/ratelimit.h:6: In file included from include/linux/sched.h:12: In file included from arch/powerpc/include/asm/current.h:13: In file included from arch/powerpc/include/asm/paca.h:17: In file included from arch/powerpc/include/asm/lppaca.h:45: In file included from include/linux/spinlock_types.h:18: In file included from include/linux/lockdep.h:43: In file included from include/linux/list.h:9: In file included from include/linux/kernel.h:12: In file included from include/linux/bitops.h:29: In file included from arch/powerpc/include/asm/bitops.h:250: In file included from include/asm-generic/bitops/le.h:6: In file included from arch/powerpc/include/uapi/asm/byteorder.h:14: include/linux/byteorder/big_endian.h:8:2: warning: inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN [-W#warnings] #warning inconsistent configuration, needs CONFIG_CPU_BIG_ENDIAN ^ GETBITSTR((SiS_Pr->CVTotal -2), 10:10, 0:0) | ^ drivers/video/fbdev/sis/init.c:3326:35: note: expanded from macro 'GETBITSTR' #define GETBITSTR(val,from,to) ((GETBITS(val,from)) << (0?to)) ^ drivers/video/fbdev/sis/init.c:3325:40: note: expanded from macro 'GETBITS' #define GETBITS(var,mask) (((var) & GENBITSMASK(mask)) >> (0?mask)) ^ drivers/video/fbdev/sis/init.c:3324:30: note: expanded from macro 'GENBITSMASK' #define GENBITSMASK(mask) GENMASK(1?mask,0?mask) ^ include/linux/bits.h:39:3: note: expanded from macro 'GENMASK' (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) ^ include/linux/bits.h:25:3: note: expanded from macro 'GENMASK_INPUT_CHECK' (BUILD_BUG_ON_ZERO(__builtin_choose_expr( ^ include/linux/build_bug.h:16:53: note: expanded from macro 'BUILD_BUG_ON_ZERO' #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) ^ drivers/video/fbdev/sis/init.c:3367:4: error: anonymous bit-field has negative width (-1) GETBITSTR((SiS_Pr->CVDisplay -1), 10:10, 1:1) | ^ drivers/video/fbdev/sis/init.c:3326:35: note: expanded from macro 'GETBITSTR' #define GETBITSTR(val,from,to) ((GETBITS(val,from)) << (0?to)) ^ drivers/video/fbdev/sis/init.c:3325:40: note: expanded from macro 'GETBITS' #define GETBITS(var,mask) (((var) & GENBITSMASK(mask)) >> (0?mask)) ^ drivers/video/fbdev/sis/init.c:3324:30: note: expanded from macro 'GENBITSMASK' #define GENBITSMASK(mask) GENMASK(1?mask,0?mask) ^ include/linux/bits.h:39:3: note: expanded from macro 'GENMASK' (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) ^ include/linux/bits.h:25:3: note: expanded from macro 'GENMASK_INPUT_CHECK' (BUILD_BUG_ON_ZERO(__builtin_choose_expr( ^ include/linux/build_bug.h:16:53: note: expanded from macro 'BUILD_BUG_ON_ZERO' #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) ^ drivers/video/fbdev/sis/init.c:3368:4: error: anonymous bit-field has negative width (-1) GETBITSTR((SiS_Pr->CVBlankStart-1), 10:10, 2:2) | ^ drivers/video/fbdev/sis/init.c:3326:35: note: expanded from macro 'GETBITSTR' #define GETBITSTR(val,from,to) ((GETBITS(val,from)) << (0?to)) ^ drivers/video/fbdev/sis/init.c:3325:40: note: expanded from macro 'GETBITS' #define GETBITS(var,mask) (((var) & GENBITSMASK(mask)) >> (0?mask)) ^ drivers/video/fbdev/sis/init.c:3324:30: note: expanded from macro 'GENBITSMASK' #define GENBITSMASK(mask) GENMASK(1?mask,0?mask) ^ include/linux/bits.h:39:3: note: expanded from macro 'GENMASK' (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) ^ include/linux/bits.h:25:3: note: expanded from macro 'GENMASK_INPUT_CHECK' (BUILD_BUG_ON_ZERO(__builtin_choose_expr( ^ include/linux/build_bug.h:16:53: note: expanded from macro 'BUILD_BUG_ON_ZERO' #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) ^ drivers/video/fbdev/sis/init.c:3369:4: error: anonymous bit-field has negative width (-1) GETBITSTR((SiS_Pr->CVSyncStart -x), 10:10, 3:3) | ^ drivers/video/fbdev/sis/init.c:3326:35: note: expanded from macro 'GETBITSTR' #define GETBITSTR(val,from,to) ((GETBITS(val,from)) << (0?to)) ^ drivers/video/fbdev/sis/init.c:3325:40: note: expanded from macro 'GETBITS' #define GETBITS(var,mask) (((var) & GENBITSMASK(mask)) >> (0?mask)) ^ drivers/video/fbdev/sis/init.c:3324:30: note: expanded from macro 'GENBITSMASK' #define GENBITSMASK(mask) GENMASK(1?mask,0?mask) ^ include/linux/bits.h:39:3: note: expanded from macro 'GENMASK' (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) ^ include/linux/bits.h:25:3: note: expanded from macro 'GENMASK_INPUT_CHECK' (BUILD_BUG_ON_ZERO(__builtin_choose_expr( ^ include/linux/build_bug.h:16:53: note: expanded from macro 'BUILD_BUG_ON_ZERO' #define BUILD_BUG_ON_ZERO(e) ((int)(sizeof(struct { int:(-!!(e)); }))) ^ drivers/video/fbdev/sis/init.c:3370:4: error: anonymous bit-field has negative width (-1) GETBITSTR((SiS_Pr->CVBlankEnd -1), 8:8, 4:4) | ^ drivers/video/fbdev/sis/init.c:3326:35: note: expanded from macro 'GETBITSTR' #define GETBITSTR(val,from,to) ((GETBITS(val,from)) << (0?to)) ^ drivers/video/fbdev/sis/init.c:3325:40: note: expanded from macro 'GETBITS' #define GETBITS(var,mask) (((var) & GENBITSMASK(mask)) >> (0?mask)) ^ drivers/video/fbdev/sis/init.c:3324:30: note: expanded from macro 'GENBITSMASK' #define GENBITSMASK(mask) GENMASK(1?mask,0?mask) ^ include/linux/bits.h:39:3: note: expanded from macro 'GENMASK' (GENMASK_INPUT_CHECK(h, l) + __GENMASK(h, l)) ^ include/linux/bits.h:25:3: note: expanded from macro 'GENMASK_INPUT_CHECK' vim +3366 drivers/video/fbdev/sis/init.c ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3328 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3329 void 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3330 SiS_CalcCRRegisters(struct SiS_Private *SiS_Pr, int depth) ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3331 { 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3332 int x = 1; /* Fix sync */ 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3333 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3334 SiS_Pr->CCRT1CRTC[0] = ((SiS_Pr->CHTotal >> 3) - 5) & 0xff; /* CR0 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3335 SiS_Pr->CCRT1CRTC[1] = (SiS_Pr->CHDisplay >> 3) - 1; /* CR1 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3336 SiS_Pr->CCRT1CRTC[2] = (SiS_Pr->CHBlankStart >> 3) - 1; /* CR2 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3337 SiS_Pr->CCRT1CRTC[3] = (((SiS_Pr->CHBlankEnd >> 3) - 1) & 0x1F) | 0x80; /* CR3 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3338 SiS_Pr->CCRT1CRTC[4] = (SiS_Pr->CHSyncStart >> 3) + 3; /* CR4 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3339 SiS_Pr->CCRT1CRTC[5] = ((((SiS_Pr->CHBlankEnd >> 3) - 1) & 0x20) << 2) | /* CR5 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3340 (((SiS_Pr->CHSyncEnd >> 3) + 3) & 0x1F); ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3341 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3342 SiS_Pr->CCRT1CRTC[6] = (SiS_Pr->CVTotal - 2) & 0xFF; /* CR6 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3343 SiS_Pr->CCRT1CRTC[7] = (((SiS_Pr->CVTotal - 2) & 0x100) >> 8) /* CR7 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3344 | (((SiS_Pr->CVDisplay - 1) & 0x100) >> 7) 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3345 | (((SiS_Pr->CVSyncStart - x) & 0x100) >> 6) ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3346 | (((SiS_Pr->CVBlankStart- 1) & 0x100) >> 5) ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3347 | 0x10 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3348 | (((SiS_Pr->CVTotal - 2) & 0x200) >> 4) ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3349 | (((SiS_Pr->CVDisplay - 1) & 0x200) >> 3) 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3350 | (((SiS_Pr->CVSyncStart - x) & 0x200) >> 2); ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3351 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3352 SiS_Pr->CCRT1CRTC[16] = ((((SiS_Pr->CVBlankStart - 1) & 0x200) >> 4) >> 5); /* CR9 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3353 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3354 if(depth != 8) { ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3355 if(SiS_Pr->CHDisplay >= 1600) SiS_Pr->CCRT1CRTC[16] |= 0x60; /* SRE */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3356 else if(SiS_Pr->CHDisplay >= 640) SiS_Pr->CCRT1CRTC[16] |= 0x40; ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3357 } ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3358 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3359 SiS_Pr->CCRT1CRTC[8] = (SiS_Pr->CVSyncStart - x) & 0xFF; /* CR10 */ 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3360 SiS_Pr->CCRT1CRTC[9] = ((SiS_Pr->CVSyncEnd - x) & 0x0F) | 0x80; /* CR11 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3361 SiS_Pr->CCRT1CRTC[10] = (SiS_Pr->CVDisplay - 1) & 0xFF; /* CR12 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3362 SiS_Pr->CCRT1CRTC[11] = (SiS_Pr->CVBlankStart - 1) & 0xFF; /* CR15 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3363 SiS_Pr->CCRT1CRTC[12] = (SiS_Pr->CVBlankEnd - 1) & 0xFF; /* CR16 */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3364 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3365 SiS_Pr->CCRT1CRTC[13] = /* SRA */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 @3366 GETBITSTR((SiS_Pr->CVTotal -2), 10:10, 0:0) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3367 GETBITSTR((SiS_Pr->CVDisplay -1), 10:10, 1:1) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3368 GETBITSTR((SiS_Pr->CVBlankStart-1), 10:10, 2:2) | 544393fe584d33 drivers/video/sis/init.c Thomas Winischhofer 2005-09-09 3369 GETBITSTR((SiS_Pr->CVSyncStart -x), 10:10, 3:3) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3370 GETBITSTR((SiS_Pr->CVBlankEnd -1), 8:8, 4:4) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3371 GETBITSTR((SiS_Pr->CVSyncEnd ), 4:4, 5:5) ; ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3372 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3373 SiS_Pr->CCRT1CRTC[14] = /* SRB */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3374 GETBITSTR((SiS_Pr->CHTotal >> 3) - 5, 9:8, 1:0) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3375 GETBITSTR((SiS_Pr->CHDisplay >> 3) - 1, 9:8, 3:2) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3376 GETBITSTR((SiS_Pr->CHBlankStart >> 3) - 1, 9:8, 5:4) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3377 GETBITSTR((SiS_Pr->CHSyncStart >> 3) + 3, 9:8, 7:6) ; ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3378 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3379 ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3380 SiS_Pr->CCRT1CRTC[15] = /* SRC */ ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3381 GETBITSTR((SiS_Pr->CHBlankEnd >> 3) - 1, 7:6, 1:0) | ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3382 GETBITSTR((SiS_Pr->CHSyncEnd >> 3) + 3, 5:5, 2:2) ; ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3383 } ^1da177e4c3f41 drivers/video/sis/init.c Linus Torvalds 2005-04-16 3384 :::::: The code at line 3366 was first introduced by commit :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2 :::::: TO: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; :::::: CC: Linus Torvalds <torvalds(a)ppc970.osdl.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org