lib/crc/crc64-neon.c:22 crc64_nvme_neon() warn: statement has no effect 'uint64x2_t'

lib/crc/crc64-neon.c:22 crc64_nvme_neon() warn: statement has no effect 'uint64x2_t'

[kernel test robot]

BCC: lkp@intel.com
CC: oe-kbuild-all@lists.linux.dev
CC: linux-kernel@vger.kernel.org
TO: Ard Biesheuvel <ardb@kernel.org>
CC: Eric Biggers <ebiggers@kernel.org>

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   62f4c998b297cf233997a2b4cd6fc2d2df0319c9
commit: 061cef5fcee5a4bbaa8726f8c5fc1d5e2f89bff7 lib/crc: Turn NEON intrinsics crc64 implementation into common code
date:   4 months ago
:::::: branch date: 18 hours ago
:::::: commit date: 4 months ago
config: arm64-randconfig-r2200-20260923 (https://download.01.org/0day-ci/archive/20260924/202609241758.XPJQfSEm-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 4b99afb361a8cfd45fc17aebc637688661e9e472)
rustc: rustc 1.96.0 (ac68faa20 2026-05-25)
smatch: v0.5.0-9187-g5189e3fb

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
| Fixes: 061cef5fcee5 ("lib/crc: Turn NEON intrinsics crc64 implementation into common code")
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <error27@gmail.com>
| Closes: https://lore.kernel.org/r/202609241758.XPJQfSEm-lkp@intel.com/

New smatch warnings:
lib/crc/crc64-neon.c:22 crc64_nvme_neon() warn: statement has no effect 'uint64x2_t'

Old smatch warnings:
lib/crc/crc64-neon.c:23 crc64_nvme_neon() warn: statement has no effect 'uint64x2_t'
lib/crc/crc64-neon.c:24 crc64_nvme_neon() warn: statement has no effect 'uint64x2_t'
lib/crc/crc64-neon.c:41 crc64_nvme_neon() warn: statement has no effect 'uint64x2_t'
lib/crc/crc64-neon.c:42 crc64_nvme_neon() warn: statement has no effect 'uint64x2_t'

vim +/uint64x2_t +22 lib/crc/crc64-neon.c

63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  12  
63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  13  /* x^191 mod G, x^127 mod G */
63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  14  static const u64 fold_consts_val[2] = { 0xeadc41fd2ba3d420ULL,
63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  15  					0x21e9761e252621acULL };
63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  16  /* floor(x^127 / G), (G - x^64) / x */
63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  17  static const u64 bconsts_val[2] = { 0x27ecfa329aef9f77ULL,
63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  18  				    0x34d926535897936aULL };
63432fd625372a lib/crc/arm64/crc64-neon-inner.c Demian Shulhan 2026-03-29  19  
061cef5fcee5a4 lib/crc/crc64-neon.c             Ard Biesheuvel 2026-04-22  20  u64 crc64_nvme_neon(u64 crc, const u8 *p, size_t len)
8fdef85d601db6 lib/crc/arm64/crc64-neon-inner.c Ard Biesheuvel 2026-03-30  21  {
8fdef85d601db6 lib/crc/arm64/crc64-neon-inner.c Ard Biesheuvel 2026-03-30 @22  	uint64x2_t fold_consts = vld1q_u64(fold_consts_val);

:::::: The code at line 22 was first introduced by commit
:::::: 8fdef85d601db670e9c178314eedffe7bbb07e52 lib/crc: arm64: Simplify intrinsics implementation

:::::: TO: Ard Biesheuvel <ardb@kernel.org>
:::::: CC: Eric Biggers <ebiggers@kernel.org>

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki