Hi Vadym, I love your patch! Perhaps something to improve: [auto build test WARNING on robh/for-next] [also build test WARNING on linux/master linus/master v5.13-rc5 next-20210608] [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] url: https://github.com/0day-ci/linux/commits/Vadym-Kochan/nvmem-add-ONIE-NVMEM-cells-parser/20210609-031008 base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next config: s390-randconfig-r012-20210608 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project d2012d965d60c3258b3a69d024491698f8aec386) 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 s390 cross compiling tool for clang build # apt-get install binutils-s390x-linux-gnu # https://github.com/0day-ci/linux/commit/e7cd03f23c4980914d9de330fd018cb733f84d8f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Vadym-Kochan/nvmem-add-ONIE-NVMEM-cells-parser/20210609-031008 git checkout e7cd03f23c4980914d9de330fd018cb733f84d8f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=s390 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from lib/vsprintf.c:36: In file included from include/linux/rtc.h:18: >> include/linux/nvmem-provider.h:183:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct nvmem_parser *' [-Wint-conversion] return -EOPNOTSUPP; ^~~~~~~~~~~ In file included from lib/vsprintf.c:40: In file included from include/net/addrconf.h:50: In file included from include/linux/ipv6.h:88: In file included from include/linux/tcp.h:17: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from lib/vsprintf.c:40: In file included from include/net/addrconf.h:50: In file included from include/linux/ipv6.h:88: In file included from include/linux/tcp.h:17: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from lib/vsprintf.c:40: In file included from include/net/addrconf.h:50: In file included from include/linux/ipv6.h:88: In file included from include/linux/tcp.h:17: In file included from include/linux/skbuff.h:31: In file included from include/linux/dma-mapping.h:10: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ 13 warnings generated. -- In file included from lib/test_printf.c:13: In file included from include/linux/rtc.h:18: >> include/linux/nvmem-provider.h:183:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct nvmem_parser *' [-Wint-conversion] return -EOPNOTSUPP; ^~~~~~~~~~~ lib/test_printf.c:157:52: warning: format specifies type 'unsigned char' but the argument has type 'int' [-Wformat] test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1); ~~~~ ^ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:157:55: warning: format specifies type 'unsigned char' but the argument has type 'int' [-Wformat] test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1); ~~~~ ^ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:157:58: warning: format specifies type 'unsigned char' but the argument has type 'int' [-Wformat] test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1); ~~~~ ^~~ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:157:63: warning: format specifies type 'unsigned char' but the argument has type 'int' [-Wformat] test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1); ~~~~ ^~~ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:157:68: warning: format specifies type 'unsigned char' but the argument has type 'int' [-Wformat] test("0|1|1|128|255", "%hhu|%hhu|%hhu|%hhu|%hhu", 0, 1, 257, 128, -1); ~~~~ ^~ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:158:52: warning: format specifies type 'char' but the argument has type 'int' [-Wformat] test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1); ~~~~ ^ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:158:55: warning: format specifies type 'char' but the argument has type 'int' [-Wformat] test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1); ~~~~ ^ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:158:58: warning: format specifies type 'char' but the argument has type 'int' [-Wformat] test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1); ~~~~ ^~~ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:158:63: warning: format specifies type 'char' but the argument has type 'int' [-Wformat] test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1); ~~~~ ^~~ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:158:68: warning: format specifies type 'char' but the argument has type 'int' [-Wformat] test("0|1|1|-128|-1", "%hhd|%hhd|%hhd|%hhd|%hhd", 0, 1, 257, 128, -1); ~~~~ ^~ %d lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:159:41: warning: format specifies type 'unsigned short' but the argument has type 'int' [-Wformat] test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627); ~~~ ^~~~ %o lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:159:47: warning: format specifies type 'unsigned short' but the argument has type 'int' [-Wformat] test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627); ~~~ ^~~~ %o lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ lib/test_printf.c:159:53: warning: format specifies type 'unsigned short' but the argument has type 'int' [-Wformat] test("2015122420151225", "%ho%ho%#ho", 1037, 5282, -11627); ~~~~ ^~~~~~ %#o lib/test_printf.c:137:40: note: expanded from macro 'test' __test(expect, strlen(expect), fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ 14 warnings generated. -- In file included from block/partitions/msdos.c:31: In file included from block/partitions/check.h:3: In file included from include/linux/blkdev.h:25: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from block/partitions/msdos.c:31: In file included from block/partitions/check.h:3: In file included from include/linux/blkdev.h:25: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from block/partitions/msdos.c:31: In file included from block/partitions/check.h:3: In file included from include/linux/blkdev.h:25: In file included from include/linux/scatterlist.h:9: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ In file included from block/partitions/msdos.c:32: In file included from block/partitions/efi.h:20: In file included from include/linux/efi.h:20: In file included from include/linux/rtc.h:18: >> include/linux/nvmem-provider.h:183:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct nvmem_parser *' [-Wint-conversion] return -EOPNOTSUPP; ^~~~~~~~~~~ 13 warnings generated. -- In file included from kernel/time/ntp.c:10: In file included from include/linux/clocksource.h:22: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:36:59: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x)) ^ include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16' #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x)) ^ In file included from kernel/time/ntp.c:10: In file included from include/linux/clocksource.h:22: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/big_endian.h:34:59: note: expanded from macro '__le32_to_cpu' #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x)) ^ include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32' #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x)) ^ In file included from kernel/time/ntp.c:10: In file included from include/linux/clocksource.h:22: In file included from arch/s390/include/asm/io.h:75: include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writeb(value, PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] readsl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesb(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesw(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] writesl(PCI_IOBASE + addr, buffer, count); ~~~~~~~~~~ ^ In file included from kernel/time/ntp.c:19: In file included from include/linux/rtc.h:18: >> include/linux/nvmem-provider.h:183:9: warning: incompatible integer to pointer conversion returning 'int' from a function with result type 'struct nvmem_parser *' [-Wint-conversion] return -EOPNOTSUPP; ^~~~~~~~~~~ kernel/time/ntp.c:245:19: warning: unused function 'ntp_synced' [-Wunused-function] static inline int ntp_synced(void) ^ 14 warnings generated. .. vim +183 include/linux/nvmem-provider.h 179 180 static inline struct nvmem_parser * 181 nvmem_parser_register(const struct nvmem_parser_config *config) 182 { > 183 return -EOPNOTSUPP; 184 } 185 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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