Build failure for armhf/armmp, linux 3.11-rc4

[Ben Hutchings <ben@decadent.org.uk>]

The build of linux 3.11~rc4-1~exp1
https://buildd.debian.org/status/fetch.php?pkg=linux&arch=armhf&ver=3.11~rc4-1~exp1&stamp=1376523445
ended with errors from modpost:

ERROR: "imx_pcm_fiq_init" [sound/soc/fsl/snd-soc-imx-ssi.ko] undefined!
ERROR: "imx_pcm_dma_init" [sound/soc/fsl/snd-soc-imx-ssi.ko] undefined!
ERROR: "imx_pcm_fiq_exit" [sound/soc/fsl/snd-soc-imx-ssi.ko] undefined!
ERROR: "imx_pcm_dma_exit" [sound/soc/fsl/snd-soc-imx-ssi.ko] undefined!
ERROR: "imx_pcm_dma_init" [sound/soc/fsl/snd-soc-fsl-ssi.ko] undefined!
ERROR: "imx_pcm_dma_exit" [sound/soc/fsl/snd-soc-fsl-ssi.ko] undefined!

These functions are defined in sound/soc/fsl/imx-pcm-{dma,fiq}.c which
are compiled into this kernel image.  And the functions are exported.
Any ideas why this is failing?

Ben.

-- 
Ben Hutchings
I haven't lost my mind; it's backed up on tape somewhere.