tree: https://github.com/Xilinx/linux-xlnx xlnx_rebase_v5.4 head: abafefebd1f1e040eef74e4ab571ea08bf745641 commit: af0c19b6f15388c554317280433100fd9f3d7d0a [1277/1768] gpio: xilinx: Use xilinx tested gpio driver config: i386-randconfig-a012-20211214 (https://download.01.org/0day-ci/archive/20211215/202112151224.vVH8KhLu-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/Xilinx/linux-xlnx/commit/af0c19b6f15388c55431728043310... git remote add xilinx-xlnx https://github.com/Xilinx/linux-xlnx git fetch --no-tags xilinx-xlnx xlnx_rebase_v5.4 git checkout af0c19b6f15388c554317280433100fd9f3d7d0a # save the config file to linux build tree mkdir build_dir make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/gpio/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/gpio/gpio-xilinx.c:68:25: error: field 'mmchip' has incomplete type 68 | struct of_mm_gpio_chip mmchip; | ^~~~~~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_get': drivers/gpio/gpio-xilinx.c:94:34: error: implicit declaration of function 'to_of_mm_gpio_chip' [-Werror=implicit-function-declaration] 94 | struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); | ^~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c:94:34: warning: initialization of 'struct of_mm_gpio_chip *' from 'int' makes pointer from integer without a cast [-Wint-conversion] In file included from arch/x86/include/asm/bitops.h:16, from include/linux/bitops.h:26, from drivers/gpio/gpio-xilinx.c:15: 994 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~ include/linux/compiler.h:330:9: note: in definition of macro '__compiletime_assert' 330 | if (!(condition)) \ | ^~~~~~~~~ include/linux/compiler.h:350:2: note: in expansion of macro '_compiletime_assert' 350 | _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__) | ^~~~~~~~~~~~~~~~~~~ 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/kernel.h:994:2: note: in expansion of macro 'BUILD_BUG_ON_MSG' 994 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~~~~~~~~~~~ include/linux/kernel.h:994:20: note: in expansion of macro '__same_type' 994 | BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ | ^~~~~~~~~~~ drivers/gpio/gpio-xilinx.c:96:6: note: in expansion of macro 'container_of' 96 | container_of(mm_gc, struct xgpio_instance, mmchip); | ^~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_set': drivers/gpio/gpio-xilinx.c:115:34: warning: initialization of 'struct of_mm_gpio_chip *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 115 | struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); | ^~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_set_multiple': drivers/gpio/gpio-xilinx.c:147:34: warning: initialization of 'struct of_mm_gpio_chip *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 147 | struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); | ^~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_dir_in': drivers/gpio/gpio-xilinx.c:187:34: warning: initialization of 'struct of_mm_gpio_chip *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 187 | struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); | ^~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_dir_out': drivers/gpio/gpio-xilinx.c:218:34: warning: initialization of 'struct of_mm_gpio_chip *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 218 | struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); | ^~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_xlate': drivers/gpio/gpio-xilinx.c:274:34: warning: initialization of 'struct of_mm_gpio_chip *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 274 | struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); | ^~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c:277:8: error: 'struct gpio_chip' has no member named 'of_gpio_n_cells' 277 | if (gc->of_gpio_n_cells == 3 && flags) | ^~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_to_irq': drivers/gpio/gpio-xilinx.c:392:34: warning: initialization of 'struct of_mm_gpio_chip *' from 'int' makes pointer from integer without a cast [-Wint-conversion] 392 | struct of_mm_gpio_chip *mm_gc = to_of_mm_gpio_chip(gc); | ^~~~~~~~~~~~~~~~~~ drivers/gpio/gpio-xilinx.c: In function 'xgpio_remove': drivers/gpio/gpio-xilinx.c:576:2: error: implicit declaration of function 'of_mm_gpiochip_remove'; did you mean 'gpiochip_remove'? [-Werror=implicit-function-declaration] 576 | of_mm_gpiochip_remove(&chip->mmchip); | ^~~~~~~~~~~~~~~~~~~~~ | gpiochip_remove drivers/gpio/gpio-xilinx.c: In function 'xgpio_of_probe': drivers/gpio/gpio-xilinx.c:676:11: error: implicit declaration of function 'of_mm_gpiochip_add'; did you mean 'gpiochip_add'? [-Werror=implicit-function-declaration] 676 | status = of_mm_gpiochip_add(np, &chip->mmchip); | ^~~~~~~~~~~~~~~~~~ | gpiochip_add cc1: some warnings being treated as errors vim +994 include/linux/kernel.h cf14f27f82af78 Alexei Starovoitov 2018-03-28 984 ^1da177e4c3f41 Linus Torvalds 2005-04-16 985 /** ^1da177e4c3f41 Linus Torvalds 2005-04-16 986 * container_of - cast a member of a structure out to the containing structure ^1da177e4c3f41 Linus Torvalds 2005-04-16 987 * @ptr: the pointer to the member. ^1da177e4c3f41 Linus Torvalds 2005-04-16 988 * @type: the type of the container struct this is embedded in. ^1da177e4c3f41 Linus Torvalds 2005-04-16 989 * @member: the name of the member within the struct. ^1da177e4c3f41 Linus Torvalds 2005-04-16 990 * ^1da177e4c3f41 Linus Torvalds 2005-04-16 991 */ ^1da177e4c3f41 Linus Torvalds 2005-04-16 992 #define container_of(ptr, type, member) ({ \ c7acec713d14c6 Ian Abbott 2017-07-12 993 void *__mptr = (void *)(ptr); \ c7acec713d14c6 Ian Abbott 2017-07-12 @994 BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ c7acec713d14c6 Ian Abbott 2017-07-12 995 !__same_type(*(ptr), void), \ c7acec713d14c6 Ian Abbott 2017-07-12 996 "pointer type mismatch in container_of()"); \ c7acec713d14c6 Ian Abbott 2017-07-12 997 ((type *)(__mptr - offsetof(type, member))); }) ^1da177e4c3f41 Linus Torvalds 2005-04-16 998 :::::: The code at line 994 was first introduced by commit :::::: c7acec713d14c6ce8a20154f9dfda258d6bcad3b kernel.h: handle pointers to arrays better in container_of() :::::: TO: Ian Abbott <abbotti(a)mev.co.uk&gt; :::::: CC: Linus Torvalds <torvalds(a)linux-foundation.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org