include/linux/io-64-nonatomic-lo-hi.h:21:16: sparse: sparse: cast truncates bits from constant value (8000000000000000 becomes 0)
From: kernel test robot
Date: Thu Nov 02 2023 - 10:05:39 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 21e80f3841c01aeaf32d7aee7bbc87b3db1aa0c6
commit: 01278cb6fa82083000a9e0b56c8b004caf5b6a73 ASoC: SOF: ops: fallback to mmio in helpers
date: 1 year ago
config: nios2-randconfig-r132-20231102 (https://download.01.org/0day-ci/archive/20231102/202311022232.mbDUzcRN-lkp@xxxxxxxxx/config)
compiler: nios2-linux-gcc (GCC) 13.2.0
reproduce: (https://download.01.org/0day-ci/archive/20231102/202311022232.mbDUzcRN-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311022232.mbDUzcRN-lkp@xxxxxxxxx/
sparse warnings: (new ones prefixed by >>)
sound/soc/sof/intel/atom.c: note: in included file (through include/sound/hdaudio.h, sound/soc/sof/intel/../sof-priv.h, sound/soc/sof/intel/../ops.h):
>> include/linux/io-64-nonatomic-lo-hi.h:21:16: sparse: sparse: cast truncates bits from constant value (8000000000000000 becomes 0)
vim +21 include/linux/io-64-nonatomic-lo-hi.h
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 18
3a044178cccfeb include/asm-generic/io-64-nonatomic-lo-hi.h Jason Baron 2014-07-04 19 static inline void lo_hi_writeq(__u64 val, volatile void __iomem *addr)
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 20 {
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 @21 writel(val, addr);
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 22 writel(val >> 32, addr + 4);
797a796a13df6b include/asm-generic/io-64-nonatomic-lo-hi.h Hitoshi Mitake 2012-02-07 23 }
3a044178cccfeb include/asm-generic/io-64-nonatomic-lo-hi.h Jason Baron 2014-07-04 24
:::::: The code at line 21 was first introduced by commit
:::::: 797a796a13df6b84a4791e57306737059b5b2384 asm-generic: architecture independent readq/writeq for 32bit environment
:::::: TO: Hitoshi Mitake <mitake@xxxxxxxxxxxxxxxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
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