tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.19 head: b9a3f5405fb3783912a70780b9f51b8942feed91 commit: 6c25eeced3b6a03023300941da6f11de31eab689 [40/50] BACKPORT: drm/i915: Don't fully disable HDCP on a port if multiple pipes are using it config: i386-randconfig-a006-20201113 (attached as .config) compiler: gcc-9 (Debian 9.3.0-15) 9.3.0 reproduce (this is a W=1 build): git remote add chrome-os https://chromium.googlesource.com/chromiumos/third_party/kernel git fetch --no-tags chrome-os chromeos-4.19 git checkout 6c25eeced3b6a03023300941da6f11de31eab689 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): drivers/gpu/drm/i915/intel_hdcp.c: In function '_intel_hdcp_enable': drivers/gpu/drm/i915/intel_hdcp.c:737:21: error: unused variable 'hdcp' [-Werror=unused-variable] 737 | struct intel_hdcp *hdcp = &connector->hdcp; | ^~~~ drivers/gpu/drm/i915/intel_hdcp.c: In function 'intel_hdcp_update_value': 785 | struct drm_device *dev = connector->base.dev; | ^~~ cc1: all warnings being treated as errors vim +/dev +785 drivers/gpu/drm/i915/intel_hdcp.c 781 782 static void intel_hdcp_update_value(struct intel_connector *connector, 783 u64 value, bool update_property) 784 { 786 struct intel_digital_port *dig_port = conn_to_dig_port(connector); 787 struct intel_hdcp *hdcp = &connector->hdcp; 788 789 WARN_ON(!mutex_is_locked(&hdcp->mutex)); 790 791 if (hdcp->value == value) 792 return; 793 794 WARN_ON(!mutex_is_locked(&dig_port->hdcp_mutex)); 795 796 if (hdcp->value == DRM_MODE_CONTENT_PROTECTION_ENABLED) { 797 if (!WARN_ON(dig_port->num_hdcp_streams == 0)) 798 dig_port->num_hdcp_streams--; 799 } else if (value == DRM_MODE_CONTENT_PROTECTION_ENABLED) { 800 dig_port->num_hdcp_streams++; 801 } 802 803 hdcp->value = value; 804 if (update_property) { 805 drm_connector_get(&connector->base); 806 schedule_work(&hdcp->prop_work); 807 } 808 } 809 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org