include/linux/compiler_types.h:630:38: error: call to '__compiletime_assert_332' declared with attribute error: FIELD_PREP: value too large for the field

From: kernel test robot

Date: Fri Feb 13 2026 - 18:42:00 EST


tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 44331bd6a6107a33f8082521b227ffa4ec063a40
commit: 34e3815ea4597131d4324a4aa243d2201e672005 spi: atcspi200: Add ATCSPI200 SPI controller driver
date: 8 weeks ago
config: riscv-randconfig-001-20260214 (https://download.01.org/0day-ci/archive/20260214/202602140738.P7ZozxzI-lkp@xxxxxxxxx/config)
compiler: riscv64-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260214/202602140738.P7ZozxzI-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/202602140738.P7ZozxzI-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

In file included from <command-line>:
In function 'atcspi_set_trans_ctl',
inlined from 'atcspi_prepare_trans' at drivers/spi/spi-atcspi200.c:242:2,
inlined from 'atcspi_exec_mem_op' at drivers/spi/spi-atcspi200.c:365:2:
>> include/linux/compiler_types.h:630:38: error: call to '__compiletime_assert_332' declared with attribute error: FIELD_PREP: value too large for the field
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:611:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^~~~~~
include/linux/compiler_types.h:630:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:69:3: note: in expansion of macro 'BUILD_BUG_ON_MSG'
BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ? \
^~~~~~~~~~~~~~~~
include/linux/bitfield.h:90:3: note: in expansion of macro '__BF_FIELD_CHECK_MASK'
__BF_FIELD_CHECK_MASK(mask, val, pfx); \
^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:137:3: note: in expansion of macro '__FIELD_PREP'
__FIELD_PREP(_mask, _val, "FIELD_PREP: "); \
^~~~~~~~~~~~
drivers/spi/spi-atcspi200.c:55:28: note: in expansion of macro 'FIELD_PREP'
#define TRANS_DUAL_QUAD(x) FIELD_PREP(GENMASK(23, 22), (x))
^~~~~~~~~~
drivers/spi/spi-atcspi200.c:198:9: note: in expansion of macro 'TRANS_DUAL_QUAD'
tc |= TRANS_DUAL_QUAD(ffs(op->data.buswidth) - 1);
^~~~~~~~~~~~~~~


vim +/__compiletime_assert_332 +630 include/linux/compiler_types.h

eb5c2d4b45e3d2 Will Deacon 2020-07-21 616
eb5c2d4b45e3d2 Will Deacon 2020-07-21 617 #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 618 __compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2 Will Deacon 2020-07-21 619
eb5c2d4b45e3d2 Will Deacon 2020-07-21 620 /**
eb5c2d4b45e3d2 Will Deacon 2020-07-21 621 * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21 622 * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2 Will Deacon 2020-07-21 623 * @msg: a message to emit if condition is false
eb5c2d4b45e3d2 Will Deacon 2020-07-21 624 *
eb5c2d4b45e3d2 Will Deacon 2020-07-21 625 * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21 626 * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2 Will Deacon 2020-07-21 627 * compiler has support to do so.
eb5c2d4b45e3d2 Will Deacon 2020-07-21 628 */
eb5c2d4b45e3d2 Will Deacon 2020-07-21 629 #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2 Will Deacon 2020-07-21 @630 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2 Will Deacon 2020-07-21 631

:::::: The code at line 630 was first introduced by commit
:::::: eb5c2d4b45e3d2d5d052ea6b8f1463976b1020d5 compiler.h: Move compiletime_assert() macros into compiler_types.h

:::::: TO: Will Deacon <will@xxxxxxxxxx>
:::::: CC: Will Deacon <will@xxxxxxxxxx>

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