Re: undefined reference to `led_classdev_unregister'

[Kalle Valo]

kernel test robot <lkp@xxxxxxxxx> writes:

> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head:   f40ddce88593482919761f74910f42f4b84c004b
> commit: 72cdab808714b1ec24b0c7bdebed163ce791f01f ath9k: Do not select MAC80211_LEDS by default
> date:   6 months ago
> config: parisc-randconfig-r002-20210218 (attached as .config)
> compiler: hppa64-linux-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
>         chmod +x ~/bin/make.cross
>         # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=72cdab808714b1ec24b0c7bdebed163ce791f01f
>         git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>         git fetch --no-tags linus master
>         git checkout 72cdab808714b1ec24b0c7bdebed163ce791f01f
>         # save the attached .config to linux build tree
>         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=parisc 
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@xxxxxxxxx>
>
> All errors (new ones prefixed by >>):
>
>    hppa64-linux-ld: drivers/net/wireless/ath/ath9k/gpio.o: in function `.LC54':
>>> (.data.rel.ro+0xe8): undefined reference to `led_classdev_unregister'
>    hppa64-linux-ld: drivers/net/wireless/ath/ath9k/gpio.o: in function `.LC64':
>>> (.data.rel.ro+0x120): undefined reference to `led_classdev_register_ext'

This commit should fix the issue:

b64acb28da83 ath9k: fix build error with LEDS_CLASS=m

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