From: Arnd Bergmann <arnd@xxxxxxxx> Drivers that call v4l2_async_nf_init() need to select the corresponding Kconfig symbol: ERROR: modpost: "v4l2_async_nf_init" [drivers/media/platform/marvell/cafe_ccic.ko] undefined! ERROR: modpost: "__v4l2_async_nf_add_i2c" [drivers/media/platform/marvell/cafe_ccic.ko] undefined! ERROR: modpost: "v4l2_async_nf_unregister" [drivers/media/platform/marvell/mcam-core.ko] undefined! ERROR: modpost: "v4l2_async_nf_init" [drivers/media/platform/marvell/mmp_camera.ko] undefined! ERROR: modpost: "__v4l2_async_nf_add_fwnode_remote" [drivers/media/platform/marvell/mmp_camera.ko] undefined! I checked all v4l2 drivers to see if anything else has the same bug, but these two appear to be the only ones. Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/media/platform/marvell/Kconfig | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/platform/marvell/Kconfig b/drivers/media/platform/marvell/Kconfig index d6499ffe30e8..d31f4730f2a3 100644 --- a/drivers/media/platform/marvell/Kconfig +++ b/drivers/media/platform/marvell/Kconfig @@ -7,6 +7,7 @@ config VIDEO_CAFE_CCIC depends on V4L_PLATFORM_DRIVERS depends on PCI && I2C && VIDEO_DEV depends on COMMON_CLK + select V4L2_ASYNC select VIDEO_OV7670 if MEDIA_SUBDRV_AUTOSELECT && VIDEO_CAMERA_SENSOR select VIDEOBUF2_VMALLOC select VIDEOBUF2_DMA_CONTIG @@ -24,6 +25,7 @@ config VIDEO_MMP_CAMERA depends on COMMON_CLK select VIDEO_OV7670 if MEDIA_SUBDRV_AUTOSELECT && VIDEO_CAMERA_SENSOR select I2C_GPIO + select V4L2_ASYNC select VIDEOBUF2_VMALLOC select VIDEOBUF2_DMA_CONTIG select VIDEOBUF2_DMA_SG -- 2.39.2