From: Arnd Bergmann <arnd@xxxxxxxx> Without this, I see a randconfig link failure: aarch64-linux-ld: drivers/media/platform/rcar_drif.o: in function `rcar_drif_remove': rcar_drif.c:(.text+0x2a8): undefined reference to `v4l2_async_notifier_unregister' aarch64-linux-ld: rcar_drif.c:(.text+0x2b0): undefined reference to `v4l2_async_notifier_cleanup' aarch64-linux-ld: drivers/media/platform/rcar_drif.o: in function `rcar_drif_sdr_probe': rcar_drif.c:(.text+0x1444): undefined reference to `v4l2_async_notifier_init' aarch64-linux-ld: rcar_drif.c:(.text+0x14a0): undefined reference to `v4l2_async_notifier_register' aarch64-linux-ld: rcar_drif.c:(.text+0x14d8): undefined reference to `v4l2_async_notifier_cleanup' aarch64-linux-ld: rcar_drif.c:(.text+0x15a8): undefined reference to `__v4l2_async_notifier_add_fwnode_subdev' I could not easily figure out when this was introduced, as this code has not changed in a while but I only saw the problem recently. Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx> --- drivers/media/platform/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 157c924686e4..c5d1c83bd582 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -635,6 +635,7 @@ config VIDEO_RCAR_DRIF depends on VIDEO_V4L2 depends on ARCH_RENESAS || COMPILE_TEST select VIDEOBUF2_VMALLOC + select V4L2_ASYNC help Say Y if you want to enable R-Car Gen3 DRIF support. DRIF is Digital Radio Interface that interfaces with an RF front end chip. It is a -- 2.29.2