Hi Bodo, Thank you for the patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v4.17-rc6] [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/Bodo-Stroesser/TCMUser-add-read-length-support/20180526-231412 config: x86_64-randconfig-x003-201820 (attached as .config) compiler: gcc-7 (Debian 7.3.0-16) 7.3.0 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All errors (new ones prefixed by >>): drivers//target/target_core_user.c: In function 'tcmu_handle_completion': >> drivers//target/target_core_user.c:1077:28: error: 'SCF_TREAT_READ_AS_NORMAL' undeclared (first use in this function) se_cmd->se_cmd_flags |= SCF_TREAT_READ_AS_NORMAL; ^~~~~~~~~~~~~~~~~~~~~~~~ drivers//target/target_core_user.c:1077:28: note: each undeclared identifier is reported only once for each function it appears in vim +/SCF_TREAT_READ_AS_NORMAL +1077 drivers//target/target_core_user.c 1041 1042 static void tcmu_handle_completion(struct tcmu_cmd *cmd, struct tcmu_cmd_entry *entry) 1043 { 1044 struct se_cmd *se_cmd = cmd->se_cmd; 1045 struct tcmu_dev *udev = cmd->tcmu_dev; 1046 bool read_len_valid = false; 1047 uint32_t read_len = se_cmd->data_length; 1048 1049 /* 1050 * cmd has been completed already from timeout, just reclaim 1051 * data area space and free cmd 1052 */ 1053 if (test_bit(TCMU_CMD_BIT_EXPIRED, &cmd->flags)) 1054 goto out; 1055 1056 tcmu_cmd_reset_dbi_cur(cmd); 1057 1058 if (entry->hdr.uflags & TCMU_UFLAG_UNKNOWN_OP) { 1059 pr_warn("TCMU: Userspace set UNKNOWN_OP flag on se_cmd %p\n", 1060 cmd->se_cmd); 1061 entry->rsp.scsi_status = SAM_STAT_CHECK_CONDITION; 1062 goto done; 1063 } 1064 1065 if (se_cmd->data_direction == DMA_FROM_DEVICE && 1066 (entry->hdr.uflags & TCMU_UFLAG_READ_LEN) && entry->rsp.read_len) { 1067 read_len_valid = true; 1068 if (entry->rsp.read_len < read_len) 1069 read_len = entry->rsp.read_len; 1070 } 1071 1072 if (entry->rsp.scsi_status == SAM_STAT_CHECK_CONDITION) { 1073 transport_copy_sense_to_cmd(se_cmd, entry->rsp.sense_buffer); 1074 if (!read_len_valid ) 1075 goto done; 1076 else > 1077 se_cmd->se_cmd_flags |= SCF_TREAT_READ_AS_NORMAL; 1078 } 1079 if (se_cmd->se_cmd_flags & SCF_BIDI) { 1080 /* Get Data-In buffer before clean up */ 1081 gather_data_area(udev, cmd, true, read_len); 1082 } else if (se_cmd->data_direction == DMA_FROM_DEVICE) { 1083 gather_data_area(udev, cmd, false, read_len); 1084 } else if (se_cmd->data_direction == DMA_TO_DEVICE) { 1085 /* TODO: */ 1086 } else if (se_cmd->data_direction != DMA_NONE) { 1087 pr_warn("TCMU: data direction was %d!\n", 1088 se_cmd->data_direction); 1089 } 1090 1091 done: 1092 if (read_len_valid) { 1093 pr_debug("read_len = %d\n", read_len); 1094 target_complete_cmd_with_length(cmd->se_cmd, 1095 entry->rsp.scsi_status, read_len); 1096 } else 1097 target_complete_cmd(cmd->se_cmd, entry->rsp.scsi_status); 1098 1099 out: 1100 cmd->se_cmd = NULL; 1101 tcmu_cmd_free_data(cmd, cmd->dbi_cnt); 1102 tcmu_free_cmd(cmd); 1103 } 1104 --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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