Hi Anil,

I love your patch! Yet something to improve:

[auto build test ERROR on mkp-scsi/for-next]
[also build test ERROR on v4.19-rc5 next-20180926]
[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/Himanshu-Madhani/qla2xxx-Add-FC-NVMe-Target-support/20180926-132955
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next
config: x86_64-randconfig-s0-09270145 (attached as .config)
compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

Note: the 
linux-review/Himanshu-Madhani/qla2xxx-Add-FC-NVMe-Target-support/20180926-132955
 HEAD ac552b3775986d6ba46be8dfa15cc47511c2e47c builds fine.
      It only hurts bisectibility.

All errors (new ones prefixed by >>):

   In file included from drivers/scsi//qla2xxx/qla_nvmet.c:14:0:
   drivers/scsi//qla2xxx/qla_nvmet.h:30:25: error: field 'nvme_cmd_iu' has 
incomplete type
     struct atio7_nvme_cmnd nvme_cmd_iu;
                            ^~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qlt_nvmet_ls_done':
   drivers/scsi//qla2xxx/qla_nvmet.c:48:46: error: 'struct <anonymous>' has no 
member named 'cmd'
     struct qla_nvmet_cmd *tgt_cmd = nvme->u.nvme.cmd;
                                                 ^
   drivers/scsi//qla2xxx/qla_nvmet.c:58:47: error: 'struct <anonymous>' has no 
member named 'cmd'
      sp, sp->vha, nvme->u.nvme.desc, nvme->u.nvme.cmd);
                                                  ^
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_ls_rsp':
>> drivers/scsi//qla2xxx/qla_nvmet.c:95:13: error: 'SRB_NVMET_LS' undeclared 
>> (first use in this function)
     sp->type = SRB_NVMET_LS;
                ^~~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c:95:13: note: each undeclared identifier is 
reported only once for each function it appears in
   drivers/scsi//qla2xxx/qla_nvmet.c:103:14: error: 'struct <anonymous>' has no 
member named 'exchange_address'
     nvme->u.nvme.exchange_address = tgt_cmd->atio.u.pt_ls4.exchange_address;
                 ^
   drivers/scsi//qla2xxx/qla_nvmet.c:103:49: error: 'union <anonymous>' has no 
member named 'pt_ls4'
     nvme->u.nvme.exchange_address = tgt_cmd->atio.u.pt_ls4.exchange_address;
                                                    ^
   drivers/scsi//qla2xxx/qla_nvmet.c:104:14: error: 'struct <anonymous>' has no 
member named 'nport_handle'
     nvme->u.nvme.nport_handle = tgt_cmd->atio.u.pt_ls4.nport_handle;
                 ^
   drivers/scsi//qla2xxx/qla_nvmet.c:104:45: error: 'union <anonymous>' has no 
member named 'pt_ls4'
     nvme->u.nvme.nport_handle = tgt_cmd->atio.u.pt_ls4.nport_handle;
                                                ^
   drivers/scsi//qla2xxx/qla_nvmet.c:105:14: error: 'struct <anonymous>' has no 
member named 'vp_index'
     nvme->u.nvme.vp_index = tgt_cmd->atio.u.pt_ls4.vp_index;
                 ^
   drivers/scsi//qla2xxx/qla_nvmet.c:105:41: error: 'union <anonymous>' has no 
member named 'pt_ls4'
     nvme->u.nvme.vp_index = tgt_cmd->atio.u.pt_ls4.vp_index;
                                            ^
   drivers/scsi//qla2xxx/qla_nvmet.c:107:14: error: 'struct <anonymous>' has no 
member named 'cmd'
     nvme->u.nvme.cmd = tgt_cmd; /* To be freed */
                 ^
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_fcp_abort':
>> drivers/scsi//qla2xxx/qla_nvmet.c:178:13: error: 'SRB_NVMET_SEND_ABTS' 
>> undeclared (first use in this function)
     sp->type = SRB_NVMET_SEND_ABTS;
                ^~~~~~~~~~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_create_targetport':
>> drivers/scsi//qla2xxx/qla_nvmet.c:240:9: error: 'ql_dbg_nvme' undeclared 
>> (first use in this function)
     ql_dbg(ql_dbg_nvme, vha, 0xe081,
            ^~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c:250:10: error: 'struct scsi_qla_host' has 
no member named 'targetport'
         &vha->targetport);
             ^~
   drivers/scsi//qla2xxx/qla_nvmet.c:257:41: error: 'struct scsi_qla_host' has 
no member named 'targetport'
     tport = (struct qla_nvmet_tgtport *)vha->targetport->private;
                                            ^~
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_delete':
   drivers/scsi//qla2xxx/qla_nvmet.c:276:17: error: 'volatile struct 
<anonymous>' has no member named 'nvmet_enabled'; did you mean 'nvme_enabled'?
     if (!vha->flags.nvmet_enabled)
                    ^
   drivers/scsi//qla2xxx/qla_nvmet.c:278:9: error: 'struct scsi_qla_host' has 
no member named 'targetport'
     if (vha->targetport) {
            ^~
   drivers/scsi//qla2xxx/qla_nvmet.c:279:42: error: 'struct scsi_qla_host' has 
no member named 'targetport'
      tport = (struct qla_nvmet_tgtport *)vha->targetport->private;
                                             ^~
   drivers/scsi//qla2xxx/qla_nvmet.c:281:10: error: 'ql_dbg_nvme' undeclared 
(first use in this function)
      ql_dbg(ql_dbg_nvme, vha, 0xe083,
             ^~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c:284:37: error: 'struct scsi_qla_host' has 
no member named 'targetport'
      nvmet_fc_unregister_targetport(vha->targetport);
                                        ^~
>> drivers/scsi//qla2xxx/qla_nvmet.c:287:3: error: implicit declaration of 
>> function 'nvmet_release_sessions' [-Werror=implicit-function-declaration]
      nvmet_release_sessions(vha);
      ^~~~~~~~~~~~~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_handle_ls':
>> drivers/scsi//qla2xxx/qla_nvmet.c:316:9: error: implicit declaration of 
>> function 'qla_nvmet_find_sess_by_s_id' 
>> [-Werror=implicit-function-declaration]
     sess = qla_nvmet_find_sess_by_s_id(vha, look_up_sid);
            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c:316:7: warning: assignment makes pointer 
from integer without a cast [-Wint-conversion]
     sess = qla_nvmet_find_sess_by_s_id(vha, look_up_sid);
          ^
   drivers/scsi//qla2xxx/qla_nvmet.c:330:25: error: 'union <anonymous>' has no 
member named 'pt_ls4'
     memcpy(&tgt_cmd->atio.u.pt_ls4, pt_ls4, sizeof(struct pt_ls4_rx_unsol));
                            ^
   drivers/scsi//qla2xxx/qla_nvmet.c:341:31: error: 'struct scsi_qla_host' has 
no member named 'targetport'
     ret = nvmet_fc_rcv_ls_req(vha->targetport,
                                  ^~
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_process_cmd':
   drivers/scsi//qla2xxx/qla_nvmet.c:373:32: error: 'struct scsi_qla_host' has 
no member named 'targetport'
     ret = nvmet_fc_rcv_fcp_req(vha->targetport, &tgt_cmd->cmd.fcp_req,
                                   ^~
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_handle_abts':
   drivers/scsi//qla2xxx/qla_nvmet.c:414:28: error: 'struct scsi_qla_host' has 
no member named 'targetport'
     nvmet_fc_rcv_fcp_abort(vha->targetport, &cmd->cmd.fcp_req);
                               ^~
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_send_resp_ctio':
   drivers/scsi//qla2xxx/qla_nvmet.c:472:34: error: 'union <anonymous>' has no 
member named 'nvme_isp27'
     struct fcp_hdr *fchdr = &atio->u.nvme_isp27.fcp_hdr;
                                     ^
>> drivers/scsi//qla2xxx/qla_nvmet.c:493:13: error: 'SRB_NVMET_FCP' undeclared 
>> (first use in this function)
     sp->type = SRB_NVMET_FCP;
                ^~~~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c:497:23: error: 'struct <anonymous>' has no 
member named 'cmd'
     sp->u.iocb_cmd.u.nvme.cmd = cmd;
                          ^
   drivers/scsi//qla2xxx/qla_nvmet.c:501:10: error: 'ql_dbg_nvme' undeclared 
(first use in this function)
      ql_dbg(ql_dbg_nvme, vha, 0x3067,
             ^~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c:517:31: error: 'union <anonymous>' has no 
member named 'nvme_isp27'
     ctio->exchange_addr = atio->u.nvme_isp27.exchange_addr;
                                  ^
   drivers/scsi//qla2xxx/qla_nvmet.c:521:19: error: 'union <anonymous>' has no 
member named 'nvme_isp27'
     c_flags = atio->u.nvme_isp27.attr << 9;
                      ^
   drivers/scsi//qla2xxx/qla_nvmet.c: In function 'qla_nvmet_send_abts_ctio':
>> drivers/scsi//qla2xxx/qla_nvmet.c:747:13: error: 'SRB_NVMET_ABTS' undeclared 
>> (first use in this function)
     sp->type = SRB_NVMET_ABTS;
                ^~~~~~~~~~~~~~
   drivers/scsi//qla2xxx/qla_nvmet.c:753:10: error: 'ql_dbg_nvme' undeclared 
(first use in this function)
      ql_dbg(ql_dbg_nvme, vha, 0x3067,
             ^~~~~~~~~~~
   cc1: some warnings being treated as errors

vim +/SRB_NVMET_LS +95 drivers/scsi//qla2xxx/qla_nvmet.c

    36  
    37  /*
    38   * qlt_nvmet_ls_done -
    39   * Invoked by the firmware interface to indicate the completion
    40   * of an LS cmd
    41   * Free all associated resources of the LS cmd
    42   */
    43  static void qlt_nvmet_ls_done(void *ptr, int res)
    44  {
    45          struct srb *sp = ptr;
    46          struct srb_iocb   *nvme = &sp->u.iocb_cmd;
    47          struct nvmefc_tgt_ls_req *rsp = nvme->u.nvme.desc;
  > 48          struct qla_nvmet_cmd *tgt_cmd = nvme->u.nvme.cmd;
    49  
    50          if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
    51                  return;
    52  
    53          ql_log(ql_log_info, sp->vha, 0x11000,
    54                  "Done with NVME LS4 req\n");
    55  
    56          ql_log(ql_log_info, sp->vha, 0x11001,
    57                  "sp: %p vha: %p, rsp: %p, cmd: %p\n",
    58                  sp, sp->vha, nvme->u.nvme.desc, nvme->u.nvme.cmd);
    59  
    60          rsp->done(rsp);
    61          /* Free tgt_cmd */
    62          kfree(tgt_cmd->buf);
    63          kfree(tgt_cmd);
    64          qla2x00_rel_sp(sp);
    65  }
    66  
    67  /*
    68   * qla_nvmet_ls_rsp -
    69   * Invoked by the nvme-t to complete the LS req.
    70   * Prepare and send a response CTIO to the firmware.
    71   */
    72  static int
    73  qla_nvmet_ls_rsp(struct nvmet_fc_target_port *tgtport,
    74                          struct nvmefc_tgt_ls_req *rsp)
    75  {
    76          struct qla_nvmet_cmd *tgt_cmd =
    77                  container_of(rsp, struct qla_nvmet_cmd, cmd.ls_req);
    78          struct scsi_qla_host *vha = tgt_cmd->vha;
    79          struct srb_iocb   *nvme;
    80          int     rval = QLA_FUNCTION_FAILED;
    81          srb_t *sp;
    82  
    83          ql_log(ql_log_info, vha, 0x11002,
    84                  "Dumping the NVMET-LS response buffer\n");
    85          ql_dump_buffer(ql_dbg_disc + ql_dbg_buffer, vha, 0x2075,
    86                  (uint8_t *)rsp->rspbuf, rsp->rsplen);
    87  
    88          /* Alloc SRB structure */
    89          sp = qla2x00_get_sp(vha, NULL, GFP_ATOMIC);
    90          if (!sp) {
    91                  ql_log(ql_log_info, vha, 0x11003, "Failed to allocate 
SRB\n");
    92                  return -ENOMEM;
    93          }
    94  
  > 95          sp->type = SRB_NVMET_LS;
    96          sp->done = qlt_nvmet_ls_done;
    97          sp->vha = vha;
    98          sp->fcport = tgt_cmd->fcport;
    99  
   100          nvme = &sp->u.iocb_cmd;
   101          nvme->u.nvme.rsp_dma = rsp->rspdma;
   102          nvme->u.nvme.rsp_len = rsp->rsplen;
   103          nvme->u.nvme.exchange_address = 
tgt_cmd->atio.u.pt_ls4.exchange_address;
   104          nvme->u.nvme.nport_handle = tgt_cmd->atio.u.pt_ls4.nport_handle;
 > 105          nvme->u.nvme.vp_index = tgt_cmd->atio.u.pt_ls4.vp_index;
   106  
 > 107          nvme->u.nvme.cmd = tgt_cmd; /* To be freed */
   108          nvme->u.nvme.desc = rsp; /* Call back to nvmet */
   109  
   110          rval = qla2x00_start_sp(sp);
   111          if (rval != QLA_SUCCESS) {
   112                  ql_log(ql_log_warn, vha, 0x11004,
   113                          "qla2x00_start_sp failed = %d\n", rval);
   114                  return rval;
   115          }
   116  
   117          return 0;
   118  }
   119  
   120  /*
   121   * qla_nvmet_fcp_op -
   122   * Invoked by the nvme-t to complete the IO.
   123   * Prepare and send a response CTIO to the firmware.
   124   */
   125  static int
   126  qla_nvmet_fcp_op(struct nvmet_fc_target_port *tgtport,
   127                          struct nvmefc_tgt_fcp_req *rsp)
   128  {
   129          struct qla_nvmet_cmd *tgt_cmd =
   130                  container_of(rsp, struct qla_nvmet_cmd, cmd.fcp_req);
   131          struct scsi_qla_host *vha = tgt_cmd->vha;
   132  
   133          if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
   134                  return 0;
   135  
   136          /* Prepare and send CTIO 82h */
   137          qla_nvmet_send_resp_ctio(vha->qpair, tgt_cmd, rsp);
   138  
   139          return 0;
   140  }
   141  
   142  /*
   143   * qla_nvmet_fcp_abort_done
   144   * free up the used resources
   145   */
   146  static void qla_nvmet_fcp_abort_done(void *ptr, int res)
   147  {
   148          srb_t *sp = ptr;
   149  
   150          qla2x00_rel_sp(sp);
   151  }
   152  
   153  /*
   154   * qla_nvmet_fcp_abort -
   155   * Invoked by the nvme-t to abort an IO
   156   * Send an abort to the firmware
   157   */
   158  static void
   159  qla_nvmet_fcp_abort(struct nvmet_fc_target_port *tgtport,
   160                          struct nvmefc_tgt_fcp_req *req)
   161  {
   162          struct qla_nvmet_cmd *tgt_cmd =
   163                  container_of(req, struct qla_nvmet_cmd, cmd.fcp_req);
   164          struct scsi_qla_host *vha = tgt_cmd->vha;
   165          struct qla_hw_data *ha = vha->hw;
   166          srb_t *sp;
   167  
   168          if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
   169                  return;
   170  
   171          /* Alloc SRB structure */
   172          sp = qla2x00_get_sp(vha, NULL, GFP_KERNEL);
   173          if (!sp) {
   174                  ql_log(ql_log_info, vha, 0x11005, "Failed to allocate 
SRB\n");
   175                  return;
   176          }
   177  
 > 178          sp->type = SRB_NVMET_SEND_ABTS;
   179          sp->done = qla_nvmet_fcp_abort_done;
   180          sp->vha = vha;
   181          sp->fcport = tgt_cmd->fcport;
   182  
   183          ha->isp_ops->abort_command(sp);
   184  
   185  }
   186  
   187  /*
   188   * qla_nvmet_fcp_req_release -
   189   * Delete the cmd from the list and free the cmd
   190   */
   191  static void
   192  qla_nvmet_fcp_req_release(struct nvmet_fc_target_port *tgtport,
   193                          struct nvmefc_tgt_fcp_req *rsp)
   194  {
   195          struct qla_nvmet_cmd *tgt_cmd =
   196                  container_of(rsp, struct qla_nvmet_cmd, cmd.fcp_req);
   197          scsi_qla_host_t *vha = tgt_cmd->vha;
   198          unsigned long flags;
   199  
   200          if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
   201                  return;
   202  
   203          spin_lock_irqsave(&vha->cmd_list_lock, flags);
   204          list_del(&tgt_cmd->cmd_list);
   205          spin_unlock_irqrestore(&vha->cmd_list_lock, flags);
   206  
   207          kfree(tgt_cmd);
   208  }
   209  
   210  static struct nvmet_fc_target_template qla_nvmet_fc_transport = {
   211          .targetport_delete      = qla_nvmet_targetport_delete,
   212          .xmt_ls_rsp             = qla_nvmet_ls_rsp,
   213          .fcp_op                 = qla_nvmet_fcp_op,
   214          .fcp_abort              = qla_nvmet_fcp_abort,
   215          .fcp_req_release        = qla_nvmet_fcp_req_release,
   216          .max_hw_queues          = 8,
   217          .max_sgl_segments       = 128,
   218          .max_dif_sgl_segments   = 64,
   219          .dma_boundary           = 0xFFFFFFFF,
   220          .target_features        = NVMET_FCTGTFEAT_READDATA_RSP |
   221                                          NVMET_FCTGTFEAT_CMD_IN_ISR |
   222                                          NVMET_FCTGTFEAT_OPDONE_IN_ISR,
   223          .target_priv_sz = sizeof(struct nvme_private),
   224  };
   225  
   226  /*
   227   * qla_nvmet_create_targetport -
   228   * Create a targetport. Registers the template with the nvme-t
   229   * layer
   230   */
   231  int qla_nvmet_create_targetport(struct scsi_qla_host *vha)
   232  {
   233          struct nvmet_fc_port_info pinfo;
   234          struct qla_nvmet_tgtport *tport;
   235          int error = 0;
   236  
   237          if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
   238                  return 0;
   239  
 > 240          ql_dbg(ql_dbg_nvme, vha, 0xe081,
   241                  "Creating target port for :%p\n", vha);
   242  
   243          memset(&pinfo, 0, (sizeof(struct nvmet_fc_port_info)));
   244          pinfo.node_name = wwn_to_u64(vha->node_name);
   245          pinfo.port_name = wwn_to_u64(vha->port_name);
   246          pinfo.port_id   = vha->d_id.b24;
   247  
   248          error = nvmet_fc_register_targetport(&pinfo,
   249              &qla_nvmet_fc_transport, &vha->hw->pdev->dev,
   250              &vha->targetport);
   251  
   252          if (error) {
   253                  ql_dbg(ql_dbg_nvme, vha, 0xe082,
   254                          "Cannot register NVME transport:%d\n", error);
   255                  return error;
   256          }
   257          tport = (struct qla_nvmet_tgtport *)vha->targetport->private;
   258          tport->vha = vha;
   259          ql_dbg(ql_dbg_nvme, vha, 0xe082,
   260                  " Registered NVME transport:%p WWPN:%llx\n",
   261                  tport, pinfo.port_name);
   262          return 0;
   263  }
   264  
   265  /*
   266   * qla_nvmet_delete -
   267   * Delete a targetport.
   268   */
   269  int qla_nvmet_delete(struct scsi_qla_host *vha)
   270  {
   271          struct qla_nvmet_tgtport *tport;
   272  
   273          if (!IS_ENABLED(CONFIG_NVME_TARGET_FC))
   274                  return 0;
   275  
   276          if (!vha->flags.nvmet_enabled)
   277                  return 0;
   278          if (vha->targetport) {
 > 279                  tport = (struct qla_nvmet_tgtport 
 > *)vha->targetport->private;
   280  
   281                  ql_dbg(ql_dbg_nvme, vha, 0xe083,
   282                          "Deleting target port :%p\n", tport);
   283                  init_completion(&tport->tport_del);
 > 284                  nvmet_fc_unregister_targetport(vha->targetport);
   285                  wait_for_completion_timeout(&tport->tport_del, 5);
   286  
 > 287                  nvmet_release_sessions(vha);
   288          }
   289          return 0;
   290  }
   291  

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