tree: https://chromium.googlesource.com/chromiumos/third_party/kernel chromeos-4.19 head: b9a3f5405fb3783912a70780b9f51b8942feed91 commit: d9e7f80c21119b35d8b863f0f330743e1f9d818a [28/50] BACKPORT: drm/i915: SRM revocation check for HDCP1.4 and 2.2 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 d9e7f80c21119b35d8b863f0f330743e1f9d818a # 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': 723 | struct intel_hdcp *hdcp = &connector->hdcp; | ^~~~ cc1: all warnings being treated as errors vim +/hdcp +723 drivers/gpu/drm/i915/intel_hdcp.c ee5e5e7a5e0fdec Sean Paul 2018-01-08 720 ee5e5e7a5e0fdec Sean Paul 2018-01-08 721 static int _intel_hdcp_enable(struct intel_connector *connector) ee5e5e7a5e0fdec Sean Paul 2018-01-08 722 { a21f41f9d3a00e4 Ramalingam C 2018-10-29 @723 struct intel_hdcp *hdcp = &connector->hdcp; ee5e5e7a5e0fdec Sean Paul 2018-01-08 724 struct drm_i915_private *dev_priv = connector->base.dev->dev_private; 6d983946513b051 Ramalingam C 2018-02-03 725 int i, ret, tries = 3; ee5e5e7a5e0fdec Sean Paul 2018-01-08 726 cb340bf37173d6d Ramalingam C 2018-02-03 727 DRM_DEBUG_KMS("[%s:%d] HDCP is being enabled...\n", cb340bf37173d6d Ramalingam C 2018-02-03 728 connector->base.name, connector->base.base.id); cb340bf37173d6d Ramalingam C 2018-02-03 729 6308a31544284c1 Ramalingam C 2018-04-02 730 if (!hdcp_key_loadable(dev_priv)) { 6308a31544284c1 Ramalingam C 2018-04-02 731 DRM_ERROR("HDCP key Load is not possible\n"); ee5e5e7a5e0fdec Sean Paul 2018-01-08 732 return -ENXIO; ee5e5e7a5e0fdec Sean Paul 2018-01-08 733 } ee5e5e7a5e0fdec Sean Paul 2018-01-08 734 ee5e5e7a5e0fdec Sean Paul 2018-01-08 735 for (i = 0; i < KEY_LOAD_TRIES; i++) { ee5e5e7a5e0fdec Sean Paul 2018-01-08 736 ret = intel_hdcp_load_keys(dev_priv); ee5e5e7a5e0fdec Sean Paul 2018-01-08 737 if (!ret) ee5e5e7a5e0fdec Sean Paul 2018-01-08 738 break; ee5e5e7a5e0fdec Sean Paul 2018-01-08 739 intel_hdcp_clear_keys(dev_priv); ee5e5e7a5e0fdec Sean Paul 2018-01-08 740 } ee5e5e7a5e0fdec Sean Paul 2018-01-08 741 if (ret) { ee5e5e7a5e0fdec Sean Paul 2018-01-08 742 DRM_ERROR("Could not load HDCP keys, (%d)\n", ret); ee5e5e7a5e0fdec Sean Paul 2018-01-08 743 return ret; ee5e5e7a5e0fdec Sean Paul 2018-01-08 744 } ee5e5e7a5e0fdec Sean Paul 2018-01-08 745 6d983946513b051 Ramalingam C 2018-02-03 746 /* Incase of authentication failures, HDCP spec expects reauth. */ 6d983946513b051 Ramalingam C 2018-02-03 747 for (i = 0; i < tries; i++) { d9e7f80c21119b3 Ramalingam C 2019-05-07 748 ret = intel_hdcp_auth(connector); 6d983946513b051 Ramalingam C 2018-02-03 749 if (!ret) 6d983946513b051 Ramalingam C 2018-02-03 750 return 0; 6d983946513b051 Ramalingam C 2018-02-03 751 6d983946513b051 Ramalingam C 2018-02-03 752 DRM_DEBUG_KMS("HDCP Auth failure (%d)\n", ret); a01244967d4311a Ramalingam C 2018-02-03 753 a01244967d4311a Ramalingam C 2018-02-03 754 /* Ensuring HDCP encryption and signalling are stopped. */ a01244967d4311a Ramalingam C 2018-02-03 755 _intel_hdcp_disable(connector); ee5e5e7a5e0fdec Sean Paul 2018-01-08 756 } ee5e5e7a5e0fdec Sean Paul 2018-01-08 757 6d983946513b051 Ramalingam C 2018-02-03 758 DRM_ERROR("HDCP authentication failed (%d tries/%d)\n", tries, ret); 6d983946513b051 Ramalingam C 2018-02-03 759 return ret; ee5e5e7a5e0fdec Sean Paul 2018-01-08 760 } ee5e5e7a5e0fdec Sean Paul 2018-01-08 761 :::::: The code at line 723 was first introduced by commit :::::: a21f41f9d3a00e4362585459d502028389c1ef15 BACKPORT: drm/i915: wrapping all hdcp var into intel_hdcp :::::: TO: Ramalingam C <ramalingam.c(a)intel.com&gt; :::::: CC: Commit Bot <commit-bot(a)chromium.org&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org