Hi Nicolas, [auto build test ERROR on linus/master] [also build test ERROR on v4.10-rc6] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Nicolas-Dichtel/uapi-export-all-headers-under-uapi-directories/20170202-213944 config: x86_64-randconfig-n0-02022216 (attached as .config) compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/media/media-device.c: In function 'media_device_get_info': >> drivers/media/media-device.c:76:2: error: implicit declaration of function 'KERNEL_VERSION' [-Werror=implicit-function-declaration] info->media_version = MEDIA_API_VERSION; ^ drivers/media/media-device.c: In function 'media_device_pci_init': drivers/media/media-device.c:841:25: error: 'LINUX_VERSION_CODE' undeclared (first use in this function) mdev->driver_version = LINUX_VERSION_CODE; ^ drivers/media/media-device.c:841:25: note: each undeclared identifier is reported only once for each function it appears in drivers/media/media-device.c: In function '__media_device_usb_init': drivers/media/media-device.c:870:25: error: 'LINUX_VERSION_CODE' undeclared (first use in this function) mdev->driver_version = LINUX_VERSION_CODE; ^ cc1: some warnings being treated as errors vim +/KERNEL_VERSION +76 drivers/media/media-device.c bcd5081b Sakari Ailus 2016-05-03 70 sizeof(info->driver)); bb07bd6b Mauro Carvalho Chehab 2016-02-11 71 bcd5081b Sakari Ailus 2016-05-03 72 strlcpy(info->model, dev->model, sizeof(info->model)); bcd5081b Sakari Ailus 2016-05-03 73 strlcpy(info->serial, dev->serial, sizeof(info->serial)); bcd5081b Sakari Ailus 2016-05-03 74 strlcpy(info->bus_info, dev->bus_info, sizeof(info->bus_info)); 140d8816 Laurent Pinchart 2010-08-18 75 bcd5081b Sakari Ailus 2016-05-03 @76 info->media_version = MEDIA_API_VERSION; bcd5081b Sakari Ailus 2016-05-03 77 info->hw_revision = dev->hw_revision; bcd5081b Sakari Ailus 2016-05-03 78 info->driver_version = dev->driver_version; 140d8816 Laurent Pinchart 2010-08-18 79 :::::: The code at line 76 was first introduced by commit :::::: bcd5081b05367d108c1380369c698a4601c41cfc [media] media: Refactor copying IOCTL arguments from and to user space :::::: TO: Sakari Ailus :::::: CC: Mauro Carvalho Chehab --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation