On Thursday 30 June 2016 10:09:25 Linus Lüssing wrote:
> Since recently the multicast optimizations are using functions from the
> bridge module. If batman-adv is a kernel built-in, then these bridge
> functions need to be accessible immediately. Thus adding a Kconfig
> dependency for the multicast optimizations to depend on batman-adv being
> built as a module if the bridge is built as a module, too.
[...]
>  config BATMAN_ADV_MCAST
>  	bool "Multicast optimisation"
> -	depends on BATMAN_ADV && INET
> +	depends on BATMAN_ADV && INET && !(BRIDGE=m && BATMAN_ADV=y)
>  	default n
>  	help
>  	  This option enables the multicast optimisation which aims to

The used functions are provided via stubs in include/linux/if_bridge.h when
bridge is disabled. So the symbols are only missing when the batman-adv code
is compiled as part of the kernel but the bridge code is compiled as modules.
So this change seems to make sense.

Reviewed-by: Sven Eckelmann <sven@narfation.org>

It is now part of the linux-merge.git.

Kind regards,
	Sven