Messages in this thread | | | Date | Tue, 28 Sep 2021 13:01:04 +0800 | From | kernel test robot <> | Subject | drivers/crypto/ccree/cc_driver.c:117:18: warning: result of comparison of constant 18446744073709551615 with expression of type 'u32' (aka 'unsigned int') is always false |
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 92477dd1faa650e50bd3bb35a6c0b8d09198cc35 commit: 05c2a705917b77e0915cca3551583583f4eafcf8 crypto: ccree - rework cache parameters handling date: 10 months ago config: arm64-randconfig-r016-20210927 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=05c2a705917b77e0915cca3551583583f4eafcf8 git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git git fetch --no-tags linus master git checkout 05c2a705917b77e0915cca3551583583f4eafcf8 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64
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 >>):
>> drivers/crypto/ccree/cc_driver.c:117:18: warning: result of comparison of constant 18446744073709551615 with expression of type 'u32' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] cache_params |= FIELD_PREP(mask, val); ^~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:94:3: note: expanded from macro 'FIELD_PREP' __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:52:28: note: expanded from macro '__BF_FIELD_CHECK' BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull, \ ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~ include/linux/compiler_types.h:319:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:307:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:299:9: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^~~~~~~~~ drivers/crypto/ccree/cc_driver.c:121:18: warning: result of comparison of constant 18446744073709551615 with expression of type 'u32' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] cache_params |= FIELD_PREP(mask, val); ^~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:94:3: note: expanded from macro 'FIELD_PREP' __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:52:28: note: expanded from macro '__BF_FIELD_CHECK' BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull, \ ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~ include/linux/compiler_types.h:319:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:307:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:299:9: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^~~~~~~~~ drivers/crypto/ccree/cc_driver.c:125:18: warning: result of comparison of constant 18446744073709551615 with expression of type 'u32' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] cache_params |= FIELD_PREP(mask, val); ^~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:94:3: note: expanded from macro 'FIELD_PREP' __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:52:28: note: expanded from macro '__BF_FIELD_CHECK' BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull, \ ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~ include/linux/compiler_types.h:319:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:307:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:299:9: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^~~~~~~~~ drivers/crypto/ccree/cc_driver.c:143:15: warning: result of comparison of constant 18446744073709551615 with expression of type 'u32' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] ace_const |= FIELD_PREP(mask, val); ^~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:94:3: note: expanded from macro 'FIELD_PREP' __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:52:28: note: expanded from macro '__BF_FIELD_CHECK' BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull, \ ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~ include/linux/compiler_types.h:319:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:307:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:299:9: note: expanded from macro '__compiletime_assert' if (!(condition)) \ ^~~~~~~~~ drivers/crypto/ccree/cc_driver.c:147:15: warning: result of comparison of constant 18446744073709551615 with expression of type 'u32' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare] ace_const |= FIELD_PREP(mask, val); ^~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:94:3: note: expanded from macro 'FIELD_PREP' __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/bitfield.h:52:28: note: expanded from macro '__BF_FIELD_CHECK' BUILD_BUG_ON_MSG((_mask) > (typeof(_reg))~0ull, \ ~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG' #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~ include/linux/compiler_types.h:319:22: note: expanded from macro 'compiletime_assert' _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/compiler_types.h:307:23: note: expanded from macro '_compiletime_assert' __compiletime_assert(condition, msg, prefix, suffix)
vim +117 drivers/crypto/ccree/cc_driver.c
102 103 static void init_cc_cache_params(struct cc_drvdata *drvdata) 104 { 105 struct device *dev = drvdata_to_dev(drvdata); 106 u32 cache_params, ace_const, val, mask; 107 108 /* compute CC_AXIM_CACHE_PARAMS */ 109 cache_params = cc_ioread(drvdata, CC_REG(AXIM_CACHE_PARAMS)); 110 dev_dbg(dev, "Cache params previous: 0x%08X\n", cache_params); 111 112 /* non cached or write-back, write allocate */ 113 val = drvdata->coherent ? 0xb : 0x2; 114 115 mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE); 116 cache_params &= ~mask; > 117 cache_params |= FIELD_PREP(mask, val); 118 119 mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE_LAST); 120 cache_params &= ~mask; 121 cache_params |= FIELD_PREP(mask, val); 122 123 mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_ARCACHE); 124 cache_params &= ~mask; 125 cache_params |= FIELD_PREP(mask, val); 126 127 drvdata->cache_params = cache_params; 128 129 dev_dbg(dev, "Cache params current: 0x%08X\n", cache_params); 130 131 if (drvdata->hw_rev <= CC_HW_REV_710) 132 return; 133 134 /* compute CC_AXIM_ACE_CONST */ 135 ace_const = cc_ioread(drvdata, CC_REG(AXIM_ACE_CONST)); 136 dev_dbg(dev, "ACE-const previous: 0x%08X\n", ace_const); 137 138 /* system or outer-sharable */ 139 val = drvdata->coherent ? 0x2 : 0x3; 140 141 mask = CC_GENMASK(CC_AXIM_ACE_CONST_ARDOMAIN); 142 ace_const &= ~mask; 143 ace_const |= FIELD_PREP(mask, val); 144 145 mask = CC_GENMASK(CC_AXIM_ACE_CONST_AWDOMAIN); 146 ace_const &= ~mask; 147 ace_const |= FIELD_PREP(mask, val); 148 149 dev_dbg(dev, "ACE-const current: 0x%08X\n", ace_const); 150 151 drvdata->ace_const = ace_const; 152 } 153
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