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Donenfeld'" , "'pedro.falcato@gmail.com'" , 'Mateusz Guzik' , 'Lorenzo Stoakes' Subject: Re: [PATCH next 6/7] minmax.h: Simplify the variants of clamp() Message-ID: <202411230458.dhZwh3TT-lkp@intel.com> References: <8f69f4deac014f558bab186444bac2e8@AcuMS.aculab.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <8f69f4deac014f558bab186444bac2e8@AcuMS.aculab.com> X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 9DB8914000C X-Stat-Signature: zfayrhekb6ukzrwqt49b67q4dkcj65xy X-Rspam-User: X-HE-Tag: 1732306779-235864 X-HE-Meta: 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 WSqjOddk TTMTjVWIRk/F7qJTMGj9T+jf7UP6YDvUMY98zArpDxl16tczlP4Qlc0sEC4BGTaAMFF0HH+6nUR3zE0oCbiJGjQWZ7wo4DbLqS55silZJv+IoRrIdmcId2VtnQxnyisCQ5v5lbAFBsijK2UO1JdHlZUphXZfrUkU36XezhdPeQtQEYbsqLuAKbpYkI4CCzFnbn8ohd2or7Ja9pMqFXeSyTvHgqUYevB2XaIEPw2ClGsfJ1f7adwtVbeRJJ9YkJnEiJKEarNg+M13xkeTAOlQ0C/VK7Fs2fE50OL5ymRvjW8OTylkfm94WaUfe1JECExFs5tzs1FkCdeEPA5/FIPO+05mJBivjIAzyYour41skvTi07SxYu25ZVqxFdg8ubj65NXNsENacyg5q7KNeoY/u/boYhHz5uLr+g2xG5cfIuDwPC6yXTnpNB24HXBPSCqaTee/VTxiqVKFFmH4AE2Vrbq+jYw== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hi David, kernel test robot noticed the following build warnings: [auto build test WARNING on next-20241121] url: https://github.com/intel-lab-lkp/linux/commits/David-Laight/minmax-h-Add-whitespace-around-operators-and-after-commas/20241121-152617 base: next-20241121 patch link: https://lore.kernel.org/r/8f69f4deac014f558bab186444bac2e8%40AcuMS.aculab.com patch subject: [PATCH next 6/7] minmax.h: Simplify the variants of clamp() config: loongarch-allyesconfig (https://download.01.org/0day-ci/archive/20241123/202411230458.dhZwh3TT-lkp@intel.com/config) compiler: loongarch64-linux-gcc (GCC) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241123/202411230458.dhZwh3TT-lkp@intel.com/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 | Closes: https://lore.kernel.org/oe-kbuild-all/202411230458.dhZwh3TT-lkp@intel.com/ All warnings (new ones prefixed by >>): In file included from include/linux/kernel.h:28, from include/linux/cpumask.h:11, from arch/loongarch/include/asm/processor.h:9, from arch/loongarch/include/asm/thread_info.h:15, from include/linux/thread_info.h:60, from include/asm-generic/current.h:6, from ./arch/loongarch/include/generated/asm/current.h:1, from include/linux/sched.h:12, from include/linux/delay.h:13, from drivers/iio/magnetometer/yamaha-yas530.c:27: drivers/iio/magnetometer/yamaha-yas530.c: In function 'yas537_measure': >> include/linux/minmax.h:188:20: warning: overflow in conversion from 'long unsigned int' to 's32' {aka 'int'} changes value from '18446744073709543424' to '-8192' [-Woverflow] 188 | type ulo = (lo); \ | ^ include/linux/minmax.h:197:9: note: in expansion of macro '__clamp_once' 197 | __clamp_once(type, val, lo, hi, __UNIQUE_ID(v_), __UNIQUE_ID(l_), __UNIQUE_ID(h_)) | ^~~~~~~~~~~~ include/linux/minmax.h:233:32: note: in expansion of macro '__careful_clamp' 233 | #define clamp_val(val, lo, hi) __careful_clamp(typeof(val), val, lo, hi) | ^~~~~~~~~~~~~~~ drivers/iio/magnetometer/yamaha-yas530.c:414:25: note: in expansion of macro 'clamp_val' 414 | clamp_val(h[i], -BIT(13), BIT(13) - 1); | ^~~~~~~~~ vim +188 include/linux/minmax.h 172 173 /** 174 * min_not_zero - return the minimum that is _not_ zero, unless both are zero 175 * @x: value1 176 * @y: value2 177 */ 178 #define min_not_zero(x, y) ({ \ 179 typeof(x) __x = (x); \ 180 typeof(y) __y = (y); \ 181 __x == 0 ? __y : ((__y == 0) ? __x : min(__x, __y)); }) 182 183 #define __clamp(val, lo, hi) \ 184 ((val) >= (hi) ? (hi) : ((val) <= (lo) ? (lo) : (val))) 185 186 #define __clamp_once(type, val, lo, hi, uval, ulo, uhi) ({ \ 187 type uval = (val); \ > 188 type ulo = (lo); \ 189 type uhi = (hi); \ 190 BUILD_BUG_ON_MSG(statically_true(ulo > uhi), \ 191 "clamp() low limit " #lo " greater than high limit " #hi); \ 192 BUILD_BUG_ON_MSG(!__types_ok3(uval, ulo, uhi), \ 193 "clamp("#val", "#lo", "#hi") signedness error"); \ 194 __clamp(uval, ulo, uhi); }) 195 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki