Hi Haowen, Thank you for the patch! Yet something to improve: [auto build test ERROR on s390/features] [also build test ERROR on v5.17 next-20220325] [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/intel-lab-lkp/linux/commits/Haowen-Bai/s390-Simplify-the-calculation-of-variables/20220328-103807 base: https://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git features config: s390-randconfig-r044-20220328 (https://download.01.org/0day-ci/archive/20220328/202203281319.E0AKjDcq-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 0f6d9501cf49ce02937099350d08f20c4af86f3d) 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/intel-lab-lkp/linux/commit/7356660d5a4a5dc70f5e18b63125c43d218885f3 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Haowen-Bai/s390-Simplify-the-calculation-of-variables/20220328-103807 git checkout 7356660d5a4a5dc70f5e18b63125c43d218885f3 # save the config file to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): In file included from drivers/nfc/nfcmrvl/main.c:9: In file included from include/linux/gpio.h:62: In file included from include/asm-generic/gpio.h:11: In file included from include/linux/gpio/driver.h:7: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: 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:37:59: 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 drivers/nfc/nfcmrvl/main.c:9: In file included from include/linux/gpio.h:62: In file included from include/asm-generic/gpio.h:11: In file included from include/linux/gpio/driver.h:7: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: 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:35:59: 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 drivers/nfc/nfcmrvl/main.c:9: In file included from include/linux/gpio.h:62: In file included from include/asm-generic/gpio.h:11: In file included from include/linux/gpio/driver.h:7: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: 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 drivers/nfc/nfcmrvl/main.c:9: In file included from include/linux/gpio.h:62: In file included from include/asm-generic/gpio.h:11: In file included from include/linux/gpio/driver.h:7: In file included from include/linux/irq.h:592: In file included from arch/s390/include/asm/hw_irq.h:6: In file included from include/linux/pci.h:1901: In file included from arch/s390/include/asm/pci.h:12: In file included from arch/s390/include/asm/sclp.h:20: In file included from arch/s390/include/asm/chpid.h:10: In file included from arch/s390/include/asm/cio.h:18: >> arch/s390/include/asm/scsw.h:695:47: error: expected ';' after return statement (scsw->tm.actl & SCSW_ACTL_SUSPENDED)) ^ ; 12 warnings and 1 error generated. vim +695 arch/s390/include/asm/scsw.h 682 683 /** 684 * scsw_tm_is_valid_pno - check pno field validity 685 * @scsw: pointer to scsw 686 * 687 * Return non-zero if the pno field of the specified transport mode scsw is 688 * valid, zero otherwise. 689 */ 690 static inline int scsw_tm_is_valid_pno(union scsw *scsw) 691 { 692 return (scsw->tm.fctl != 0) && 693 (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && 694 (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) || > 695 (scsw->tm.actl & SCSW_ACTL_SUSPENDED)) 696 } 697 -- 0-DAY CI Kernel Test Service https://01.org/lkp
