[3/3] usb: typec: altmodes/displayport: Notify drm subsys of hotplug events

From: kbuild test robot <lkp@intel.com>
To: Hans de Goede <hdegoede@redhat.com>
Cc: kbuild-all@01.org,
	Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
	Maxime Ripard <maxime.ripard@bootlin.com>,
	Sean Paul <seanpaul@chromium.org>,
	Daniel Vetter <daniel.vetter@intel.com>,
	Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Heikki Krogerus <heikki.krogerus@linux.intel.com>,
	David Airlie <airlied@linux.ie>,
	intel-gfx <intel-gfx@lists.freedesktop.org>,
	dri-devel@lists.freedesktop.org, linux-usb@vger.kernel.org
Subject: [3/3] usb: typec: altmodes/displayport: Notify drm subsys of hotplug events
Date: Wed, 27 Feb 2019 00:04:36 +0800	[thread overview]
Message-ID: <201902262354.qqbs1z5l%fengguang.wu@intel.com> (raw)

Hi Hans,

I love your patch! Yet something to improve:

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on next-20190226]
[cannot apply to v5.0-rc8]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Hans-de-Goede/Propagate-DP-over-Type-C-hotplug-events-from-Type-C-subsys-to-drm-drivers/20190226-005334
base:   git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-randconfig-s1-02261802 (attached as .config)
compiler: gcc-6 (Debian 6.5.0-2) 6.5.0 20181026
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   ld: drivers/usb/typec/altmodes/displayport.o: in function `dp_altmode_remove':
>> drivers/usb/typec/altmodes/displayport.c:570: undefined reference to `drm_kms_call_oob_hotplug_notifier_chain'
   ld: drivers/usb/typec/altmodes/displayport.o: in function `dp_altmode_notify':
   drivers/usb/typec/altmodes/displayport.c:79: undefined reference to `drm_kms_call_oob_hotplug_notifier_chain'

vim +570 drivers/usb/typec/altmodes/displayport.c

   562	
   563	static void dp_altmode_remove(struct typec_altmode *alt)
   564	{
   565		struct dp_altmode *dp = typec_altmode_get_drvdata(alt);
   566	
   567		sysfs_remove_group(&alt->dev.kobj, &dp_altmode_group);
   568		cancel_work_sync(&dp->work);
   569	
 > 570		drm_kms_call_oob_hotplug_notifier_chain(DRM_OOB_HOTPLUG_TYPE_C_DP);
   571	}
   572
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