[kvalo-wireless-drivers-next:pending 1/1] drivers/net/wireless/purelifi/plfxlc/usb.c:912:29: error: 'get_purelifi_usb' defined but not used

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git pending
head:   01a229ffe23e35005691a665c797de5c2bd37a57
commit: 01a229ffe23e35005691a665c797de5c2bd37a57 [1/1] wireless: Initial driver submission for pureLiFi STA devices
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 11.2.0
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/kvalo/wireless-drivers-next.git/commit/?id=01a229ffe23e35005691a665c797de5c2bd37a57
        git remote add kvalo-wireless-drivers-next https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git
        git fetch --no-tags kvalo-wireless-drivers-next pending
        git checkout 01a229ffe23e35005691a665c797de5c2bd37a57
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=m68k 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <redacted>

All errors (new ones prefixed by >>):

quoted

drivers/net/wireless/purelifi/plfxlc/usb.c:912:29: error: 'get_purelifi_usb' defined but not used [-Werror=unused-function]

     912 | static struct purelifi_usb *get_purelifi_usb(struct usb_interface *intf)
         |                             ^~~~~~~~~~~~~~~~
   cc1: all warnings being treated as errors


vim +/get_purelifi_usb +912 drivers/net/wireless/purelifi/plfxlc/usb.c

   911	
 > 912	static struct purelifi_usb *get_purelifi_usb(struct usb_interface *intf)
   913	{
   914		struct ieee80211_hw *hw = purelifi_intf_to_hw(intf);
   915		struct purelifi_mac *mac;
   916	
   917		/* Either something really bad happened, or
   918		 * we're just dealing with
   919		 * a DEVICE_INSTALLER.
   920		 */
   921		if (!hw)
   922			return NULL;
   923	
   924		mac = purelifi_hw_mac(hw);
   925		return &mac->chip.usb;
   926	}
   927	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org