Hi Ramalingam, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on drm-intel/for-linux-next] [also build test WARNING on v4.17-rc6 next-20180517] [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/Ramalingam-C/drm-i915-Implement-HDCP2-2/20180523-031938 base: git://anongit.freedesktop.org/drm-intel for-linux-next reproduce: # apt-get install sparse make ARCH=x86_64 allmodconfig make C=1 CF=-D__CHECK_ENDIAN__ sparse warnings: (new ones prefixed by >>) drivers/gpu/drm/i915/i915_drv.h:3663:16: sparse: expression using sizeof(void) >> drivers/gpu/drm/i915/intel_hdcp.c:1247:30: sparse: incorrect type in assignment (different base types) @@ expected restricted __be16 [assigned] [usertype] k @@ got e] k @@ drivers/gpu/drm/i915/intel_hdcp.c:1247:30: expected restricted __be16 [assigned] [usertype] k drivers/gpu/drm/i915/intel_hdcp.c:1247:30: got int drivers/gpu/drm/i915/intel_hdcp.c:1343:12: warning: 'hdcp2_authenticate_sink' defined but not used [-Wunused-function] static int hdcp2_authenticate_sink(struct intel_connector *connector) ^~~~~~~~~~~~~~~~~~~~~~~ vim +1247 drivers/gpu/drm/i915/intel_hdcp.c 1228 1229 static 1230 int hdcp2_propagate_stream_management_info(struct intel_connector *connector) 1231 { 1232 struct intel_digital_port *intel_dig_port = conn_to_dig_port(connector); 1233 struct intel_hdcp *hdcp = &connector->hdcp; 1234 union { 1235 struct hdcp2_rep_stream_manage stream_manage; 1236 struct hdcp2_rep_stream_ready stream_ready; 1237 } msgs; 1238 const struct intel_hdcp_shim *shim = hdcp->hdcp_shim; 1239 int ret; 1240 1241 /* Prepare RepeaterAuth_Stream_Manage msg */ 1242 msgs.stream_manage.msg_id = HDCP_2_2_REP_STREAM_MANAGE; 1243 reverse_endianness(msgs.stream_manage.seq_num_m, HDCP_2_2_SEQ_NUM_LEN, 1244 (u8 *)&hdcp->seq_num_m); 1245 1246 /* K no of streams is fixed as 1. Stored as big-endian. */ > 1247 msgs.stream_manage.k = __swab16(1); 1248 1249 /* For HDMI this is forced to be 0x0. For DP SST also this is 0x0. */ 1250 msgs.stream_manage.streams[0].stream_id = 0; 1251 msgs.stream_manage.streams[0].stream_type = hdcp->content_type; 1252 1253 /* Send it to Repeater */ 1254 ret = shim->write_2_2_msg(intel_dig_port, &msgs.stream_manage, 1255 sizeof(msgs.stream_manage)); 1256 if (ret < 0) 1257 return ret; 1258 1259 ret = shim->read_2_2_msg(intel_dig_port, HDCP_2_2_REP_STREAM_READY, 1260 &msgs.stream_ready, sizeof(msgs.stream_ready)); 1261 if (ret < 0) 1262 return ret; 1263 1264 hdcp->mei_data.seq_num_m = hdcp->seq_num_m; 1265 hdcp->mei_data.streams[0].stream_type = hdcp->content_type; 1266 1267 ret = hdcp2_verify_mprime(hdcp, &msgs.stream_ready); 1268 if (ret < 0) 1269 return ret; 1270 1271 hdcp->seq_num_m++; 1272 1273 if (hdcp->seq_num_m > HDCP_2_2_SEQ_NUM_MAX) { 1274 DRM_DEBUG_KMS("seq_num_m roll over.\n"); 1275 return -1; 1276 } 1277 1278 return 0; 1279 } 1280 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
