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Message-ID: <202510281414.DnejZh4n-lkp@intel.com>
Date: Tue, 28 Oct 2025 14:37:09 +0800
From: kernel test robot <lkp@...el.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...nel.org>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Claudiu Beznea <claudiu.beznea@...on.dev>,
Giovanni Cabiddu <giovanni.cabiddu@...el.com>,
Herbert Xu <herbert@...dor.apana.org.au>,
David Miller <davem@...emloft.net>,
Linus Walleij <linus.walleij@...aro.org>,
Bartosz Golaszewski <brgl@...ev.pl>, Joel Stanley <joel@....id.au>,
Andrew Jeffery <andrew@...econstruct.com.au>,
Crt Mori <cmo@...exis.com>, Jonathan Cameron <jic23@...nel.org>,
Lars-Peter Clausen <lars@...afoo.de>,
Jacky Huang <ychuang3@...oton.com>,
Shan-Chun Hung <schung@...oton.com>,
Yury Norov <yury.norov@...il.com>,
Rasmus Villemoes <linux@...musvillemoes.dk>,
Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
Johannes Berg <johannes@...solutions.net>,
Jakub Kicinski <kuba@...nel.org>, Alex Elder <elder@...e.org>,
David Laight <david.laight.linux@...il.com>,
Vincent Mailhol <mailhol.vincent@...adoo.fr>,
Jason Baron <jbaron@...mai.com>, Borislav Petkov <bp@...en8.de>,
Tony Luck <tony.luck@...el.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
netdev@...r.kernel.org
Subject: Re: [PATCH v5 15/23] gpio: aspeed: Convert to common
field_{get,prep}() helpers
Hi Geert,
kernel test robot noticed the following build warnings:
[auto build test WARNING on jic23-iio/togreg]
[also build test WARNING on next-20251027]
[cannot apply to clk/clk-next geert-renesas-devel/next geert-renesas-drivers/renesas-clk linus/master v6.18-rc3]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Geert-Uytterhoeven/clk-at91-pmc-undef-field_-get-prep-before-definition/20251028-025423
base: https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git togreg
patch link: https://lore.kernel.org/r/fbefa056d1e2cd13c52a0489b955c2b9442f0c9a.1761588465.git.geert%2Brenesas%40glider.be
patch subject: [PATCH v5 15/23] gpio: aspeed: Convert to common field_{get,prep}() helpers
config: x86_64-buildonly-randconfig-003-20251028 (https://download.01.org/0day-ci/archive/20251028/202510281414.DnejZh4n-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251028/202510281414.DnejZh4n-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 <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202510281414.DnejZh4n-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/gpio/gpio-aspeed.c:1161:44: 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]
1161 | write_val = (ioread32(addr) & ~(mask)) | field_prep(mask, val);
| ^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:256:32: note: expanded from macro 'field_prep'
256 | (__builtin_constant_p(mask) ? FIELD_PREP(mask, val) \
| ^~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:115:3: note: expanded from macro 'FIELD_PREP'
115 | __BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:72:53: note: expanded from macro '__BF_FIELD_CHECK'
72 | BUILD_BUG_ON_MSG(__bf_cast_unsigned(_mask, _mask) > \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~~
73 | __bf_cast_unsigned(_reg, ~0ull), \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
74 | _pfx "type of reg too small for mask"); \
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:597:22: note: expanded from macro 'compiletime_assert'
597 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:585:23: note: expanded from macro '_compiletime_assert'
585 | __compiletime_assert(condition, msg, prefix, suffix)
| ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:577:9: note: expanded from macro '__compiletime_assert'
577 | if (!(condition)) \
| ^~~~~~~~~
1 warning generated.
vim +1161 drivers/gpio/gpio-aspeed.c
b2e861bd1eaf4c Billy Tsai 2024-10-08 1152
b2e861bd1eaf4c Billy Tsai 2024-10-08 1153 static void aspeed_g7_reg_bit_set(struct aspeed_gpio *gpio, unsigned int offset,
b2e861bd1eaf4c Billy Tsai 2024-10-08 1154 const enum aspeed_gpio_reg reg, bool val)
b2e861bd1eaf4c Billy Tsai 2024-10-08 1155 {
b2e861bd1eaf4c Billy Tsai 2024-10-08 1156 u32 mask = aspeed_gpio_g7_reg_mask(reg);
b2e861bd1eaf4c Billy Tsai 2024-10-08 1157 void __iomem *addr = gpio->base + GPIO_G7_CTRL_REG_OFFSET(offset);
b2e861bd1eaf4c Billy Tsai 2024-10-08 1158 u32 write_val;
b2e861bd1eaf4c Billy Tsai 2024-10-08 1159
b2e861bd1eaf4c Billy Tsai 2024-10-08 1160 if (mask) {
b2e861bd1eaf4c Billy Tsai 2024-10-08 @1161 write_val = (ioread32(addr) & ~(mask)) | field_prep(mask, val);
b2e861bd1eaf4c Billy Tsai 2024-10-08 1162 iowrite32(write_val, addr);
b2e861bd1eaf4c Billy Tsai 2024-10-08 1163 }
b2e861bd1eaf4c Billy Tsai 2024-10-08 1164 }
b2e861bd1eaf4c Billy Tsai 2024-10-08 1165
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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