Arnd Bergmann <> writes:

> Moving the pxa_camera driver from soc_camera lots the implied
> VIDEO_V4L2 Kconfig dependency, and building the driver without
> V4L2 results in a kernel that cannot link:
> drivers/media/platform/pxa_camera.o: In function `pxa_camera_remove':
> pxa_camera.c:(.text.pxa_camera_remove+0x10): undefined reference to 
> `v4l2_clk_unregister'
> pxa_camera.c:(.text.pxa_camera_remove+0x18): undefined reference to 
> `v4l2_device_unregister'
> drivers/media/platform/pxa_camera.o: In function `pxa_camera_probe':
> pxa_camera.c:(.text.pxa_camera_probe+0x458): undefined reference to 
> `v4l2_of_parse_endpoint'
> drivers/media/v4l2-core/videobuf2-core.o: In function `__enqueue_in_driver':
> drivers/media/v4l2-core/videobuf2-core.o: In function `vb2_core_streamon':
> videobuf2-core.c:(.text.vb2_core_streamon+0x1b4): undefined reference to 
> `v4l_vb2q_enable_media_source'
> drivers/media/v4l2-core/videobuf2-v4l2.o: In function `vb2_ioctl_reqbufs':
> videobuf2-v4l2.c:(.text.vb2_ioctl_reqbufs+0xc): undefined reference to 
> `video_devdata'
> This adds back an explicit dependency.
That looks right to me.

Acked-by: Robert Jarzmik <>


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