[openeuler:OLK-6.6 9619/9669] arch/x86/kernel/zhaoxin_kh40000.c:47:30: warning: bitwise or with non-zero value always evaluates to true
tree: https://gitee.com/openeuler/kernel.git OLK-6.6 head: bb74bc369fd2ab5f41a32c4ddc2e23bc76c3c550 commit: 4332dbb07181359cccca3ba757ef54e434fb1296 [9619/9669] Add kh40000_direct_dma_ops for KH-40000 platform config: x86_64-rhel-8.3-rust (https://download.01.org/0day-ci/archive/20240520/202405201915.EtSGIZ33-lkp@i...) compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240520/202405201915.EtSGIZ33-lkp@i...)
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@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202405201915.EtSGIZ33-lkp@intel.com/
All warnings (new ones prefixed by >>):
arch/x86/kernel/zhaoxin_kh40000.c:47:30: warning: bitwise or with non-zero value always evaluates to true [-Wtautological-bitwise-compare]
47 | if (ZHAOXIN_P2CW_NODE_CHECK | zhaoxin_patch_code) | ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~ 1 warning generated.
vim +47 arch/x86/kernel/zhaoxin_kh40000.c
36 37 static int __init zhaoxin_patch_code_setup(char *str) 38 { 39 int err = kstrtoul(str, 0, &zhaoxin_patch_code); 40 41 if (err || (zhaoxin_patch_code > ZHAOXIN_PATCH_CODE_MAX)) { 42 pr_err("cmdline 'zhaoxin_patch_bitmask=%s' inappropriate\n", str); 43 zhaoxin_patch_code = ZHAOXIN_PATCH_CODE_DEFAULT; 44 return err; 45 } 46
47 if (ZHAOXIN_P2CW_NODE_CHECK | zhaoxin_patch_code)
48 pr_info("zhaoxin dma patch node check is enabled\n"); 49 50 return 0; 51 } 52 __setup("zhaoxin_patch_bitmask=", zhaoxin_patch_code_setup); 53
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kernel test robot