Hi Florian, FYI, the error/warning still remains. tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 4a06c8ac2fb3ef484579ce44f9b809bd310fad48 commit: e831cd251fb91d6c25352d322743db0d17ea11dd [media] add raw video stream support for Samsung SUR40 date: 6 months ago config: x86_64-randconfig-n0-10111553 (attached as .config) reproduce: git checkout e831cd251fb91d6c25352d322743db0d17ea11dd # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers/built-in.o: In function `sur40_disconnect': sur40.c:(.text+0x241ed1): undefined reference to `video_unregister_device' sur40.c:(.text+0x241ee2): undefined reference to `v4l2_device_unregister' drivers/built-in.o: In function `sur40_process_video': sur40.c:(.text+0x24236d): undefined reference to `v4l2_get_timestamp' drivers/built-in.o: In function `sur40_vidioc_querycap': sur40.c:(.text+0x2429b3): undefined reference to `video_devdata' drivers/built-in.o: In function `sur40_probe': sur40.c:(.text+0x242e52): undefined reference to `v4l2_device_register' sur40.c:(.text+0x242efd): undefined reference to `v4l2_device_unregister' sur40.c:(.text+0x243003): undefined reference to `video_device_release_empty' sur40.c:(.text+0x24304d): undefined reference to `__video_register_device' sur40.c:(.text+0x24309d): undefined reference to `video_unregister_device' drivers/built-in.o: In function `vb2_fop_mmap': >> (.text+0x250d65): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_ioctl_expbuf': (.text+0x250da6): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_ioctl_streamoff': (.text+0x250e26): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_ioctl_streamon': (.text+0x250ea6): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_ioctl_dqbuf': (.text+0x251cb6): undefined reference to `video_devdata' drivers/built-in.o:(.text+0x251fc5): more undefined references to `video_devdata' follow drivers/built-in.o: In function `vb2_thread': >> videobuf2-core.c:(.text+0x25348d): undefined reference to `v4l2_get_timestamp' drivers/built-in.o: In function `vb2_ioctl_qbuf': (.text+0x2535a6): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_ioctl_prepare_buf': (.text+0x2537a6): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_ioctl_create_bufs': (.text+0x253fac): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_ioctl_reqbufs': (.text+0x25465c): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_poll': (.text+0x254c5d): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_poll': >> (.text+0x254ee3): undefined reference to `v4l2_event_pending' drivers/built-in.o: In function `vb2_fop_poll': (.text+0x255240): undefined reference to `video_devdata' drivers/built-in.o: In function `__vb2_perform_fileio': videobuf2-core.c:(.text+0x255ec1): undefined reference to `v4l2_get_timestamp' drivers/built-in.o: In function `vb2_fop_read': (.text+0x2560f7): undefined reference to `video_devdata' drivers/built-in.o: In function `vb2_fop_write': (.text+0x2562a7): undefined reference to `video_devdata' drivers/built-in.o: In function `_vb2_fop_release': (.text+0x25650c): undefined reference to `video_devdata' drivers/built-in.o: In function `_vb2_fop_release': >> (.text+0x256566): undefined reference to `v4l2_fh_release' drivers/built-in.o: In function `vb2_fop_release': (.text+0x256605): undefined reference to `video_devdata' drivers/built-in.o:(.rodata+0x26320): undefined reference to `video_ioctl2' drivers/built-in.o:(.rodata+0x26340): undefined reference to `v4l2_fh_open' --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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