Re: [PATCH v3 2/4] iio: adc: ad4691: add initial driver for AD4691 family
From: kernel test robot
Date: Wed Mar 25 2026 - 11:19:14 EST
Hi Radu,
kernel test robot noticed the following build errors:
[auto build test ERROR on 11439c4635edd669ae435eec308f4ab8a0804808]
url: https://github.com/intel-lab-lkp/linux/commits/Radu-Sabau-via-B4-Relay/dt-bindings-iio-adc-add-bindings-for-AD4691-family/20260314-040740
base: 11439c4635edd669ae435eec308f4ab8a0804808
patch link: https://lore.kernel.org/r/20260313-ad4692-multichannel-sar-adc-driver-v3-2-b4d14d81a181%40analog.com
patch subject: [PATCH v3 2/4] iio: adc: ad4691: add initial driver for AD4691 family
config: nios2-allmodconfig (https://download.01.org/0day-ci/archive/20260325/202603252241.8UAUrLG4-lkp@xxxxxxxxx/config)
compiler: nios2-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260325/202603252241.8UAUrLG4-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/202603252241.8UAUrLG4-lkp@xxxxxxxxx/
All errors (new ones prefixed by >>):
In file included from <command-line>:
drivers/iio/adc/ad4691.c: In function '__ad4691_set_sampling_freq':
>> include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_418' declared with attribute error: clamp(freq, 1, st->chip->max_rate) signedness error
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:687:25: note: in definition of macro '__compiletime_assert'
687 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/minmax.h:190:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
190 | BUILD_BUG_ON_MSG(!__types_ok3(uval, ulo, uhi), \
| ^~~~~~~~~~~~~~~~
include/linux/minmax.h:195:9: note: in expansion of macro '__clamp_once'
195 | __clamp_once(type, val, lo, hi, __UNIQUE_ID(v_), __UNIQUE_ID(l_), __UNIQUE_ID(h_))
| ^~~~~~~~~~~~
include/linux/minmax.h:206:28: note: in expansion of macro '__careful_clamp'
206 | #define clamp(val, lo, hi) __careful_clamp(auto, val, lo, hi)
| ^~~~~~~~~~~~~~~
drivers/iio/adc/ad4691.c:419:16: note: in expansion of macro 'clamp'
419 | freq = clamp(freq, 1, st->chip->max_rate);
| ^~~~~
--
In file included from <command-line>:
ad4691.c: In function '__ad4691_set_sampling_freq':
>> include/linux/compiler_types.h:706:45: error: call to '__compiletime_assert_418' declared with attribute error: clamp(freq, 1, st->chip->max_rate) signedness error
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^
include/linux/compiler_types.h:687:25: note: in definition of macro '__compiletime_assert'
687 | prefix ## suffix(); \
| ^~~~~~
include/linux/compiler_types.h:706:9: note: in expansion of macro '_compiletime_assert'
706 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:37: note: in expansion of macro 'compiletime_assert'
39 | #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
| ^~~~~~~~~~~~~~~~~~
include/linux/minmax.h:190:9: note: in expansion of macro 'BUILD_BUG_ON_MSG'
190 | BUILD_BUG_ON_MSG(!__types_ok3(uval, ulo, uhi), \
| ^~~~~~~~~~~~~~~~
include/linux/minmax.h:195:9: note: in expansion of macro '__clamp_once'
195 | __clamp_once(type, val, lo, hi, __UNIQUE_ID(v_), __UNIQUE_ID(l_), __UNIQUE_ID(h_))
| ^~~~~~~~~~~~
include/linux/minmax.h:206:28: note: in expansion of macro '__careful_clamp'
206 | #define clamp(val, lo, hi) __careful_clamp(auto, val, lo, hi)
| ^~~~~~~~~~~~~~~
ad4691.c:419:16: note: in expansion of macro 'clamp'
419 | freq = clamp(freq, 1, st->chip->max_rate);
| ^~~~~
vim +/__compiletime_assert_418 +706 include/linux/compiler_types.h
eb5c2d4b45e3d2d Will Deacon 2020-07-21 692
eb5c2d4b45e3d2d Will Deacon 2020-07-21 693 #define _compiletime_assert(condition, msg, prefix, suffix) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 694 __compiletime_assert(condition, msg, prefix, suffix)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 695
eb5c2d4b45e3d2d Will Deacon 2020-07-21 696 /**
eb5c2d4b45e3d2d Will Deacon 2020-07-21 697 * compiletime_assert - break build and emit msg if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 698 * @condition: a compile-time constant condition to check
eb5c2d4b45e3d2d Will Deacon 2020-07-21 699 * @msg: a message to emit if condition is false
eb5c2d4b45e3d2d Will Deacon 2020-07-21 700 *
eb5c2d4b45e3d2d Will Deacon 2020-07-21 701 * In tradition of POSIX assert, this macro will break the build if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 702 * supplied condition is *false*, emitting the supplied error message if the
eb5c2d4b45e3d2d Will Deacon 2020-07-21 703 * compiler has support to do so.
eb5c2d4b45e3d2d Will Deacon 2020-07-21 704 */
eb5c2d4b45e3d2d Will Deacon 2020-07-21 705 #define compiletime_assert(condition, msg) \
eb5c2d4b45e3d2d Will Deacon 2020-07-21 @706 _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
eb5c2d4b45e3d2d Will Deacon 2020-07-21 707
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki