Messages in this thread | | | Date | Sat, 26 Mar 2022 10:31:57 +0800 | From | kernel test robot <> | Subject | [ammarfaizi2-block:dhowells/linux-fs/afs-testing 44/44] arch/sh/include/asm/cmpxchg-irq.h:24:14: sparse: sparse: cast truncates bits from constant value (5e5ee5e5 becomes e5e5) |
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tree: https://github.com/ammarfaizi2/linux-block dhowells/linux-fs/afs-testing head: 1eba43e7cea9100a3767c5a7212ec5f1db4db4fd commit: 1eba43e7cea9100a3767c5a7212ec5f1db4db4fd [44/44] Check for dead timer config: sh-randconfig-s032-20220325 (https://download.01.org/0day-ci/archive/20220326/202203261033.hVE2K2SZ-lkp@intel.com/config) compiler: sh4-linux-gcc (GCC) 11.2.0 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: v0.6.4-dirty # https://github.com/ammarfaizi2/linux-block/commit/1eba43e7cea9100a3767c5a7212ec5f1db4db4fd git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block dhowells/linux-fs/afs-testing git checkout 1eba43e7cea9100a3767c5a7212ec5f1db4db4fd # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sh SHELL=/bin/bash kernel/time/
If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@intel.com>
sparse warnings: (new ones prefixed by >>) kernel/time/timer.c: note: in included file (through arch/sh/include/asm/cmpxchg.h, arch/sh/include/asm/atomic.h, include/linux/atomic.h, ...): >> arch/sh/include/asm/cmpxchg-irq.h:24:14: sparse: sparse: cast truncates bits from constant value (5e5ee5e5 becomes e5e5)
vim +24 arch/sh/include/asm/cmpxchg-irq.h
1efe4ce3ca126da include/asm-sh/cmpxchg-irq.h Stuart Menefy 2007-11-30 17 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 18 static inline unsigned long xchg_u16(volatile u16 *m, unsigned long val) 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 19 { 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 20 unsigned long flags, retval; 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 21 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 22 local_irq_save(flags); 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 23 retval = *m; 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 @24 *m = val; 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 25 local_irq_restore(flags); 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 26 return retval; 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 27 } 3226aad81aa6700 arch/sh/include/asm/cmpxchg-irq.h Michael S. Tsirkin 2016-01-07 28
:::::: The code at line 24 was first introduced by commit :::::: 3226aad81aa670015a59e51458a0deb2d3bcb600 sh: support 1 and 2 byte xchg
:::::: TO: Michael S. Tsirkin <mst@redhat.com> :::::: CC: Michael S. Tsirkin <mst@redhat.com>
-- 0-DAY CI Kernel Test Service https://01.org/lkp
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