[peterz-queue:x86/wip.extable 1/22] drivers/crypto/ccree/cc_driver.c:117:18: warning: result of comparison of constant 18446744073709551615 with expression of type 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned shor...

From: kernel test robot
Date: Fri Nov 05 2021 - 06:18:46 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git x86/wip.extable
head: a4d149db054a77aa35b04bb088f749cbb9a2edea
commit: 4b9e954553a4137f7504e068438851c27edc6b22 [1/22] bitfield.h: Fix "type of reg too small for mask" test
config: riscv-randconfig-r032-20211105 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 847a6807332b13f43704327c2d30103ec0347c77)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=4b9e954553a4137f7504e068438851c27edc6b22
git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
git fetch --no-tags peterz-queue x86/wip.extable
git checkout 4b9e954553a4137f7504e068438851c27edc6b22
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=riscv

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

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 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare]
cache_params |= FIELD_PREP(mask, val);
^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:111:3: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:68:53: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
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:322:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:310:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:302:9: 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 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare]
cache_params |= FIELD_PREP(mask, val);
^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:111:3: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:68:53: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
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:322:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:310:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:302:9: 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 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare]
cache_params |= FIELD_PREP(mask, val);
^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:111:3: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:68:53: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
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:322:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:310:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:302:9: 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 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare]
ace_const |= FIELD_PREP(mask, val);
^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:111:3: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:68:53: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
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:322:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:310:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:302:9: 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 'typeof (_Generic((mask), char: (unsigned char)0, unsigned char: (unsigned char)0, signed char: (unsigned char)0, unsigned short: (unsigned short)0, short: (unsigned short)0, unsigned int: (unsigned int)0, int: (unsigned int)0, unsigned long: (unsigned long)0, long: (unsigned long)0, unsigned long long: (unsigned long long)0, long long: (unsigned long long)0, default: (mask)))' (aka 'unsigned int') is always false [-Wtautological-constant-out-of-range-compare]
ace_const |= FIELD_PREP(mask, val);
^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:111:3: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:68:53: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
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:322:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:310:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)

vim +117 drivers/crypto/ccree/cc_driver.c

27b3b22dd98cae Gilad Ben-Yossef 2018-02-19 102
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 103 static void init_cc_cache_params(struct cc_drvdata *drvdata)
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 104 {
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 105 struct device *dev = drvdata_to_dev(drvdata);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 106 u32 cache_params, ace_const, val, mask;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 107
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 108 /* compute CC_AXIM_CACHE_PARAMS */
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 109 cache_params = cc_ioread(drvdata, CC_REG(AXIM_CACHE_PARAMS));
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 110 dev_dbg(dev, "Cache params previous: 0x%08X\n", cache_params);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 111
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 112 /* non cached or write-back, write allocate */
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 113 val = drvdata->coherent ? 0xb : 0x2;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 114
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 115 mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 116 cache_params &= ~mask;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 @117 cache_params |= FIELD_PREP(mask, val);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 118
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 119 mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_AWCACHE_LAST);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 120 cache_params &= ~mask;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 121 cache_params |= FIELD_PREP(mask, val);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 122
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 123 mask = CC_GENMASK(CC_AXIM_CACHE_PARAMS_ARCACHE);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 124 cache_params &= ~mask;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 125 cache_params |= FIELD_PREP(mask, val);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 126
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 127 drvdata->cache_params = cache_params;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 128
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 129 dev_dbg(dev, "Cache params current: 0x%08X\n", cache_params);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 130
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 131 if (drvdata->hw_rev <= CC_HW_REV_710)
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 132 return;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 133
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 134 /* compute CC_AXIM_ACE_CONST */
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 135 ace_const = cc_ioread(drvdata, CC_REG(AXIM_ACE_CONST));
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 136 dev_dbg(dev, "ACE-const previous: 0x%08X\n", ace_const);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 137
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 138 /* system or outer-sharable */
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 139 val = drvdata->coherent ? 0x2 : 0x3;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 140
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 141 mask = CC_GENMASK(CC_AXIM_ACE_CONST_ARDOMAIN);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 142 ace_const &= ~mask;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 143 ace_const |= FIELD_PREP(mask, val);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 144
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 145 mask = CC_GENMASK(CC_AXIM_ACE_CONST_AWDOMAIN);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 146 ace_const &= ~mask;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 147 ace_const |= FIELD_PREP(mask, val);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 148
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 149 dev_dbg(dev, "ACE-const current: 0x%08X\n", ace_const);
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 150
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 151 drvdata->ace_const = ace_const;
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 152 }
05c2a705917b77 Gilad Ben-Yossef 2020-11-22 153

:::::: The code at line 117 was first introduced by commit
:::::: 05c2a705917b77e0915cca3551583583f4eafcf8 crypto: ccree - rework cache parameters handling

:::::: TO: Gilad Ben-Yossef <gilad@xxxxxxxxxxxxx>
:::::: CC: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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