Hi Zou, Thank you for the patch! Yet something to improve: [auto build test ERROR on next-20210922] url: https://github.com/0day-ci/linux/commits/Zou-Wei/usb-core-Remove-unused-including-linux-version-h/20210929-195024 base: e90f9946ba2858ebca541c15378f5290bf2184fb config: riscv-randconfig-r042-20210929 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project dc6e8dfdfe7efecfda318d43a06fae18b40eb498) 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 riscv cross compiling tool for clang build # apt-get install binutils-riscv64-linux-gnu # https://github.com/0day-ci/linux/commit/076ec43ee612b7980ff4b09b55e25d7db99eef5d git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Zou-Wei/usb-core-Remove-unused-including-linux-version-h/20210929-195024 git checkout 076ec43ee612b7980ff4b09b55e25d7db99eef5d # save the attached .config to linux build tree mkdir build_dir COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash drivers/usb/core/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All errors (new ones prefixed by >>): >> drivers/usb/core/hcd.c:129:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ ^ drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ >> drivers/usb/core/hcd.c:129:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ >> drivers/usb/core/hcd.c:129:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ >> drivers/usb/core/hcd.c:129:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ >> drivers/usb/core/hcd.c:129:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ ^ drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ >> drivers/usb/core/hcd.c:129:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ >> drivers/usb/core/hcd.c:129:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ >> drivers/usb/core/hcd.c:129:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ drivers/usb/core/hcd.c:150:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ ^ drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ drivers/usb/core/hcd.c:150:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ drivers/usb/core/hcd.c:150:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ drivers/usb/core/hcd.c:150:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ drivers/usb/core/hcd.c:150:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ ^ drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ drivers/usb/core/hcd.c:150:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ drivers/usb/core/hcd.c:150:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ drivers/usb/core/hcd.c:150:14: error: use of undeclared identifier 'LINUX_VERSION_MAJOR' drivers/usb/core/hcd.c:113:28: note: expanded from macro 'KERNEL_REL' #define KERNEL_REL bin2bcd(LINUX_VERSION_MAJOR) ^ drivers/usb/core/hcd.c:171:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ ^ drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ drivers/usb/core/hcd.c:171:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ drivers/usb/core/hcd.c:171:2: error: use of undeclared identifier 'LINUX_VERSION_PATCHLEVEL' drivers/usb/core/hcd.c:114:28: note: expanded from macro 'KERNEL_VER' #define KERNEL_VER bin2bcd(LINUX_VERSION_PATCHLEVEL) ^ fatal error: too many errors emitted, stopping now [-ferror-limit=] 20 errors generated. vim +/LINUX_VERSION_PATCHLEVEL +129 drivers/usb/core/hcd.c ^1da177e4c3f41 Linus Torvalds 2005-04-16 115 9508e3b7a70c11 Mathias Nyman 2015-12-10 116 /* usb 3.1 root hub device descriptor */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 117 static const u8 usb31_rh_dev_descriptor[18] = { 9508e3b7a70c11 Mathias Nyman 2015-12-10 118 0x12, /* __u8 bLength; */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 119 USB_DT_DEVICE, /* __u8 bDescriptorType; Device */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 120 0x10, 0x03, /* __le16 bcdUSB; v3.1 */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 121 9508e3b7a70c11 Mathias Nyman 2015-12-10 122 0x09, /* __u8 bDeviceClass; HUB_CLASSCODE */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 123 0x00, /* __u8 bDeviceSubClass; */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 124 0x03, /* __u8 bDeviceProtocol; USB 3 hub */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 125 0x09, /* __u8 bMaxPacketSize0; 2^9 = 512 Bytes */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 126 9508e3b7a70c11 Mathias Nyman 2015-12-10 127 0x6b, 0x1d, /* __le16 idVendor; Linux Foundation 0x1d6b */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 128 0x03, 0x00, /* __le16 idProduct; device 0x0003 */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 @129 KERNEL_VER, KERNEL_REL, /* __le16 bcdDevice */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 130 9508e3b7a70c11 Mathias Nyman 2015-12-10 131 0x03, /* __u8 iManufacturer; */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 132 0x02, /* __u8 iProduct; */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 133 0x01, /* __u8 iSerialNumber; */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 134 0x01 /* __u8 bNumConfigurations; */ 9508e3b7a70c11 Mathias Nyman 2015-12-10 135 }; 9508e3b7a70c11 Mathias Nyman 2015-12-10 136 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org