tree:   https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-5.4
head:   ac4d903632c1b77bba5988200f71a3e0ca99e715
commit: e32446b689d9bd04346347591c9f2d6d60c0bbc4 [29/164] CHROMIUM: platform/chrome: pd_update: Use usbpd notifier
config: i386-randconfig-f002-20200325 (attached as .config)
compiler: gcc-7 (Debian 7.5.0-5) 7.5.0
reproduce:
        git checkout e32446b689d9bd04346347591c9f2d6d60c0bbc4
        # save the attached .config to linux build tree
        make ARCH=i386 

If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

   ld: drivers/platform/chrome/cros_ec_pd_update.o: in function `plat_cros_ec_pd_remove':
>> drivers/platform/chrome/cros_ec_pd_update.c:885: undefined reference to `cros_usbpd_unregister_notify'
   ld: drivers/platform/chrome/cros_ec_pd_update.o: in function `plat_cros_ec_pd_probe':
>> drivers/platform/chrome/cros_ec_pd_update.c:872: undefined reference to `cros_usbpd_register_notify'

vim +885 drivers/platform/chrome/cros_ec_pd_update.c

   857	
   858	static int plat_cros_ec_pd_probe(struct platform_device *pdev)
   859	{
   860		struct device *dev = &pdev->dev;
   861		struct cros_ec_pd_update_data *drv_data =
   862			(struct cros_ec_pd_update_data *)dev_get_drvdata(dev);
   863		int ret;
   864	
   865		ret = cros_ec_pd_add(dev);
   866		if (ret < 0)
   867			return ret;
   868	
   869		drv_data = (struct cros_ec_pd_update_data *)dev_get_drvdata(dev);
   870		/* Get PD events from the EC */
   871		drv_data->notifier.notifier_call = _ec_pd_notify;
 > 872		ret = cros_usbpd_register_notify(&drv_data->notifier);
   873		if (ret < 0)
   874			dev_warn(dev, "failed to register notifier\n");
   875	
   876		return 0;
   877	}
   878	
   879	static int plat_cros_ec_pd_remove(struct platform_device *pdev)
   880	{
   881		struct device *dev = &pdev->dev;
   882		struct cros_ec_pd_update_data *drv_data =
   883			(struct cros_ec_pd_update_data *)dev_get_drvdata(dev);
   884	
 > 885		cros_usbpd_unregister_notify(&drv_data->notifier);
   886	
   887		return cros_ec_pd_remove(dev);
   888	}
   889	

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