The omap media driver can be built-in while the v4l2 core is a loadable module. This is a mistake and leads to link errors:
drivers/media/platform/omap/omap_vout.o: In function `omap_vout_remove': omap_vout.c:(.text+0xec): undefined reference to `v4l2_device_unregister' omap_vout.c:(.text+0x140): undefined reference to `video_device_release' omap_vout.c:(.text+0x150): undefined reference to `video_unregister_device' omap_vout.c:(.text+0x15c): undefined reference to `v4l2_ctrl_handler_free' An explicit Kconfig dependency on VIDEO_V4L2 avoids the problem. I ran into this problem for the first time today during my randconfig builds, but could not find what caused it. Signed-off-by: Arnd Bergmann <[email protected]> --- drivers/media/platform/omap/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/media/platform/omap/Kconfig b/drivers/media/platform/omap/Kconfig index d827b6c285a6..4b5e55d41ad4 100644 --- a/drivers/media/platform/omap/Kconfig +++ b/drivers/media/platform/omap/Kconfig @@ -8,6 +8,7 @@ config VIDEO_OMAP2_VOUT depends on MMU depends on FB_OMAP2 || (COMPILE_TEST && FB_OMAP2=n) depends on ARCH_OMAP2 || ARCH_OMAP3 || COMPILE_TEST + depends on VIDEO_V4L2 select VIDEOBUF_GEN select VIDEOBUF_DMA_CONTIG select OMAP2_VRFB if ARCH_OMAP2 || ARCH_OMAP3 -- 2.9.0
