[driver-core:driver-core-testing 77/77] drivers/base/base.h:221:63: error: void function 'devtmpfs_delete_node' should not return a value

kernel test robot <[email protected]>
Newsgroups org.linuxdriverproject.driverdev-devel,dev.linux.lists.llvm,dev.linux.lists.oe-kbuild-all
Message-ID <[email protected]> 
tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-testing
head:   ecfd9f08fe2ef7616477c089dce1b0f05dcee13c
commit: ecfd9f08fe2ef7616477c089dce1b0f05dcee13c [77/77] devtmpfs: remove return value of devtmpfs_delete_node()
config: arm-randconfig-r006-20230210 (https://download.01.org/0day-ci/archive/20230210/[email protected]/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project db0e6591612b53910a1b366863348bdb9d7d2fb1)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git/commit/?id=ecfd9f08fe2ef7616477c089dce1b0f05dcee13c
        git remote add driver-core https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git
        git fetch --no-tags driver-core driver-core-testing
        git checkout ecfd9f08fe2ef7616477c089dce1b0f05dcee13c
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/

All errors (new ones prefixed by >>):

   In file included from drivers/base/core.c:35:
>> drivers/base/base.h:221:63: error: void function 'devtmpfs_delete_node' should not return a value [-Wreturn-type]
   static inline void devtmpfs_delete_node(struct device *dev) { return 0; }
                                                                 ^      ~
   1 error generated.
--
   In file included from drivers/base/cpu.c:24:
>> drivers/base/base.h:221:63: error: void function 'devtmpfs_delete_node' should not return a value [-Wreturn-type]
   static inline void devtmpfs_delete_node(struct device *dev) { return 0; }
                                                                 ^      ~
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:97:11: warning: array index 3 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
                   return (set->sig[3] | set->sig[2] |
                           ^        ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:97:25: warning: array index 2 is past the end of the array (that has type 'unsigned long[2]') [-Warray-bounds]
                   return (set->sig[3] | set->sig[2] |
                                         ^        ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:113:11: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
                   return  (set1->sig[3] == set2->sig[3]) &&
                            ^         ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:113:27: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
                   return  (set1->sig[3] == set2->sig[3]) &&
                                            ^         ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:114:5: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
                           (set1->sig[2] == set2->sig[2]) &&
                            ^         ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:114:21: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
                           (set1->sig[2] == set2->sig[2]) &&
                                            ^         ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:156:1: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   _SIG_SET_BINOP(sigorsets, _sig_or)
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/signal.h:137:8: note: expanded from macro '_SIG_SET_BINOP'
                   a3 = a->sig[3]; a2 = a->sig[2];                         \
                        ^      ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:156:1: warning: array index 2 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   _SIG_SET_BINOP(sigorsets, _sig_or)
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/signal.h:137:24: note: expanded from macro '_SIG_SET_BINOP'
                   a3 = a->sig[3]; a2 = a->sig[2];                         \
                                        ^      ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
           ^
   In file included from drivers/base/cpu.c:140:
   In file included from include/linux/kexec.h:18:
   In file included from include/linux/crash_core.h:6:
   In file included from include/linux/elfcore.h:9:
   include/linux/signal.h:156:1: warning: array index 3 is past the end of the array (that has type 'const unsigned long[2]') [-Warray-bounds]
   _SIG_SET_BINOP(sigorsets, _sig_or)
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   include/linux/signal.h:138:8: note: expanded from macro '_SIG_SET_BINOP'
                   b3 = b->sig[3]; b2 = b->sig[2];                         \
                        ^      ~
   arch/arm/include/asm/signal.h:17:2: note: array 'sig' declared here
           unsigned long sig[_NSIG_WORDS];
--
   In file included from drivers/base/power/runtime.c:16:
>> drivers/base/power/../base.h:221:63: error: void function 'devtmpfs_delete_node' should not return a value [-Wreturn-type]
   static inline void devtmpfs_delete_node(struct device *dev) { return 0; }
                                                                 ^      ~
   1 error generated.
--
   In file included from drivers/base/firmware_loader/main.c:43:
>> drivers/base/firmware_loader/../base.h:221:63: error: void function 'devtmpfs_delete_node' should not return a value [-Wreturn-type]
   static inline void devtmpfs_delete_node(struct device *dev) { return 0; }
                                                                 ^      ~
   1 error generated.


vim +/devtmpfs_delete_node +221 drivers/base/base.h

   215	
   216	#ifdef CONFIG_DEVTMPFS
   217	int devtmpfs_create_node(struct device *dev);
   218	void devtmpfs_delete_node(struct device *dev);
   219	#else
   220	static inline int devtmpfs_create_node(struct device *dev) { return 0; }
 > 221	static inline void devtmpfs_delete_node(struct device *dev) { return 0; }
   222	#endif
   223	

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https://github.com/intel/lkp-tests
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