Messages in this thread | | | Date | Fri, 15 Jan 2021 02:19:41 +0800 | From | kernel test robot <> | Subject | drivers/iio/accel/adxl372.c:949:3: warning: converting the result of '<<' to a boolean always evaluates to true |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 65f0d2414b7079556fbbcc070b3d1c9f9587606d commit: b0fc6783d4ae58f796fb183c40dbc7fa3199d51d iio: accel: adxl372: Add support for FIFO peak mode date: 4 months ago config: mips-randconfig-r026-20210114 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 68ff52ffead2ba25cca442778ab19286000daad7) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b0fc6783d4ae58f796fb183c40dbc7fa3199d51d git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout b0fc6783d4ae58f796fb183c40dbc7fa3199d51d # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=mips
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
In file included from include/linux/interrupt.h:8: In file included from include/linux/cpumask.h:13: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:52:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] arch/mips/include/asm/atomic.h:45:9: note: expanded from macro 'ATOMIC_OPS' return xchg(&v->counter, n); \ ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/iio/accel/adxl372.c:10: In file included from include/linux/interrupt.h:8: In file included from include/linux/cpumask.h:13: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:257:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] ATOMIC_SIP_OP(atomic, int, subu, ll, sc) ^ arch/mips/include/asm/atomic.h:251:7: note: expanded from macro 'ATOMIC_SIP_OP' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/iio/accel/adxl372.c:10: In file included from include/linux/interrupt.h:8: In file included from include/linux/cpumask.h:13: In file included from include/linux/atomic.h:7: arch/mips/include/asm/atomic.h:261:1: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] ATOMIC_SIP_OP(atomic64, s64, dsubu, lld, scd) ^ arch/mips/include/asm/atomic.h:251:7: note: expanded from macro 'ATOMIC_SIP_OP' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/iio/accel/adxl372.c:10: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:5: In file included from include/linux/context_tracking_state.h:5: In file included from include/linux/percpu.h:7: In file included from include/linux/smp.h:15: In file included from include/linux/smp_types.h:5: include/linux/llist.h:222:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] return xchg(&head->first, NULL); ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/iio/accel/adxl372.c:10: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:7: In file included from include/linux/lockdep.h:27: include/linux/debug_locks.h:17:9: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] return xchg(&debug_locks, 0); ^ arch/mips/include/asm/cmpxchg.h:102:7: note: expanded from macro 'xchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/iio/accel/adxl372.c:14: In file included from include/linux/spi/spi.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:33: In file included from include/linux/pgtable.h:6: arch/mips/include/asm/pgtable.h:210:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] cmpxchg64(&buddy->pte, 0, _PAGE_GLOBAL); ^ arch/mips/include/asm/cmpxchg.h:220:2: note: expanded from macro 'cmpxchg64' cmpxchg((ptr), (o), (n)); \ ^ arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ In file included from drivers/iio/accel/adxl372.c:14: In file included from include/linux/spi/spi.h:14: In file included from include/linux/scatterlist.h:8: In file included from include/linux/mm.h:33: In file included from include/linux/pgtable.h:6: arch/mips/include/asm/pgtable.h:210:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] arch/mips/include/asm/cmpxchg.h:220:2: note: expanded from macro 'cmpxchg64' cmpxchg((ptr), (o), (n)); \ ^ arch/mips/include/asm/cmpxchg.h:204:7: note: expanded from macro 'cmpxchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ >> drivers/iio/accel/adxl372.c:949:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] set_mask_bits(&st->int1_bitmask, ADXL372_INT1_MAP_ACT_MSK, ^ include/linux/bitops.h:269:11: note: expanded from macro 'set_mask_bits' } while (cmpxchg(ptr, old__, new__) != old__); \ ^ arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ >> drivers/iio/accel/adxl372.c:949:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] include/linux/bitops.h:269:11: note: expanded from macro 'set_mask_bits' } while (cmpxchg(ptr, old__, new__) != old__); \ ^ arch/mips/include/asm/cmpxchg.h:204:7: note: expanded from macro 'cmpxchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ drivers/iio/accel/adxl372.c:953:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] set_mask_bits(&st->int1_bitmask, ADXL372_INT1_MAP_INACT_MSK, ^ include/linux/bitops.h:269:11: note: expanded from macro 'set_mask_bits' } while (cmpxchg(ptr, old__, new__) != old__); \ ^ arch/mips/include/asm/cmpxchg.h:194:7: note: expanded from macro 'cmpxchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ drivers/iio/accel/adxl372.c:953:3: warning: converting the result of '<<' to a boolean always evaluates to true [-Wtautological-constant-compare] include/linux/bitops.h:269:11: note: expanded from macro 'set_mask_bits' } while (cmpxchg(ptr, old__, new__) != old__); \ ^ arch/mips/include/asm/cmpxchg.h:204:7: note: expanded from macro 'cmpxchg' if (!__SYNC_loongson3_war) \ ^ arch/mips/include/asm/sync.h:147:34: note: expanded from macro '__SYNC_loongson3_war' # define __SYNC_loongson3_war (1 << 31) ^ 16 warnings generated.
vim +949 drivers/iio/accel/adxl372.c
940 941 static int adxl372_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, 942 enum iio_event_type type, enum iio_event_direction dir, 943 int state) 944 { 945 struct adxl372_state *st = iio_priv(indio_dev); 946 947 switch (dir) { 948 case IIO_EV_DIR_RISING: > 949 set_mask_bits(&st->int1_bitmask, ADXL372_INT1_MAP_ACT_MSK, 950 ADXL372_INT1_MAP_ACT_MODE(state)); 951 break; 952 case IIO_EV_DIR_FALLING: 953 set_mask_bits(&st->int1_bitmask, ADXL372_INT1_MAP_INACT_MSK, 954 ADXL372_INT1_MAP_INACT_MODE(state)); 955 break; 956 default: 957 return -EINVAL; 958 } 959 960 return adxl372_set_interrupts(st, st->int1_bitmask, 0); 961 } 962
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