Hi Randall,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on mkp-scsi/for-next]
[also build test ERROR on scsi/for-next v5.9-rc4 next-20200910]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    
https://github.com/0day-ci/linux/commits/Randall-Huang/scsi-clear-UAC-before-sending-SG_IO/20200910-181617
base:   https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next
config: x86_64-randconfig-r022-20200909 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 
0a5dc7effb191eff740e0e7ae7bd8e1f6bdb3ad9)
reproduce (this is a W=1 build):
        wget 
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O 
~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>

All errors (new ones prefixed by >>):

>> drivers/scsi/sg.c:938:10: error: use of undeclared identifier 
>> 'SCSI_UFS_REQUEST_SENSE'
                   _cmd = SCSI_UFS_REQUEST_SENSE;
                          ^
>> drivers/scsi/sg.c:939:26: error: no member named 'wlun_clr_uac' in 'struct 
>> Scsi_Host'
                   if (sdp->device->host->wlun_clr_uac) {
                       ~~~~~~~~~~~~~~~~~  ^
   drivers/scsi/sg.c:941:23: error: no member named 'wlun_clr_uac' in 'struct 
Scsi_Host'
                           sdp->device->host->wlun_clr_uac = false;
                           ~~~~~~~~~~~~~~~~~  ^
   3 errors generated.

# 
https://github.com/0day-ci/linux/commit/ff032a89412d0cf4592575b5e8f5385b223d2261
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review 
Randall-Huang/scsi-clear-UAC-before-sending-SG_IO/20200910-181617
git checkout ff032a89412d0cf4592575b5e8f5385b223d2261
vim +/SCSI_UFS_REQUEST_SENSE +938 drivers/scsi/sg.c

   916  
   917  static long
   918  sg_ioctl_common(struct file *filp, Sg_device *sdp, Sg_fd *sfp,
   919                  unsigned int cmd_in, void __user *p)
   920  {
   921          int __user *ip = p;
   922          int result, val, read_only;
   923          Sg_request *srp;
   924          unsigned long iflags;
   925          int _cmd;
   926  
   927          SCSI_LOG_TIMEOUT(3, sg_printk(KERN_INFO, sdp,
   928                                     "sg_ioctl: cmd=0x%x\n", (int) 
cmd_in));
   929          read_only = (O_RDWR != (filp->f_flags & O_ACCMODE));
   930  
   931          switch (cmd_in) {
   932          case SG_IO:
   933                  if (atomic_read(&sdp->detaching))
   934                          return -ENODEV;
   935                  if (!scsi_block_when_processing_errors(sdp->device))
   936                          return -ENXIO;
   937  
 > 938                  _cmd = SCSI_UFS_REQUEST_SENSE;
 > 939                  if (sdp->device->host->wlun_clr_uac) {
   940                          sdp->device->host->hostt->ioctl(sdp->device, 
_cmd, NULL);
   941                          sdp->device->host->wlun_clr_uac = false;
   942                  }
   943  
   944                  result = sg_new_write(sfp, filp, p, SZ_SG_IO_HDR,
   945                                   1, read_only, 1, &srp);
   946                  if (result < 0)
   947                          return result;
   948                  result = wait_event_interruptible(sfp->read_wait,
   949                          (srp_done(sfp, srp) || 
atomic_read(&sdp->detaching)));
   950                  if (atomic_read(&sdp->detaching))
   951                          return -ENODEV;
   952                  write_lock_irq(&sfp->rq_list_lock);
   953                  if (srp->done) {
   954                          srp->done = 2;
   955                          write_unlock_irq(&sfp->rq_list_lock);
   956                          result = sg_new_read(sfp, p, SZ_SG_IO_HDR, srp);
   957                          return (result < 0) ? result : 0;
   958                  }
   959                  srp->orphan = 1;
   960                  write_unlock_irq(&sfp->rq_list_lock);
   961                  return result;  /* -ERESTARTSYS because signal hit 
process */
   962          case SG_SET_TIMEOUT:
   963                  result = get_user(val, ip);
   964                  if (result)
   965                          return result;
   966                  if (val < 0)
   967                          return -EIO;
   968                  if (val >= mult_frac((s64)INT_MAX, USER_HZ, HZ))
   969                          val = min_t(s64, mult_frac((s64)INT_MAX, 
USER_HZ, HZ),
   970                                      INT_MAX);
   971                  sfp->timeout_user = val;
   972                  sfp->timeout = mult_frac(val, HZ, USER_HZ);
   973  
   974                  return 0;
   975          case SG_GET_TIMEOUT:    /* N.B. User receives timeout as return 
value */
   976                                  /* strange ..., for backward 
compatibility */
   977                  return sfp->timeout_user;
   978          case SG_SET_FORCE_LOW_DMA:
   979                  /*
   980                   * N.B. This ioctl never worked properly, but failed to
   981                   * return an error value. So returning '0' to keep 
compability
   982                   * with legacy applications.
   983                   */
   984                  return 0;
   985          case SG_GET_LOW_DMA:
   986                  return put_user((int) 
sdp->device->host->unchecked_isa_dma, ip);
   987          case SG_GET_SCSI_ID:
   988                  {
   989                          sg_scsi_id_t v;
   990  
   991                          if (atomic_read(&sdp->detaching))
   992                                  return -ENODEV;
   993                          memset(&v, 0, sizeof(v));
   994                          v.host_no = sdp->device->host->host_no;
   995                          v.channel = sdp->device->channel;
   996                          v.scsi_id = sdp->device->id;
   997                          v.lun = sdp->device->lun;
   998                          v.scsi_type = sdp->device->type;
   999                          v.h_cmd_per_lun = 
sdp->device->host->cmd_per_lun;
  1000                          v.d_queue_depth = sdp->device->queue_depth;
  1001                          if (copy_to_user(p, &v, sizeof(sg_scsi_id_t)))
  1002                                  return -EFAULT;
  1003                          return 0;
  1004                  }
  1005          case SG_SET_FORCE_PACK_ID:
  1006                  result = get_user(val, ip);
  1007                  if (result)
  1008                          return result;
  1009                  sfp->force_packid = val ? 1 : 0;
  1010                  return 0;
  1011          case SG_GET_PACK_ID:
  1012                  read_lock_irqsave(&sfp->rq_list_lock, iflags);
  1013                  list_for_each_entry(srp, &sfp->rq_list, entry) {
  1014                          if ((1 == srp->done) && (!srp->sg_io_owned)) {
  1015                                  
read_unlock_irqrestore(&sfp->rq_list_lock,
  1016                                                         iflags);
  1017                                  return put_user(srp->header.pack_id, 
ip);
  1018                          }
  1019                  }
  1020                  read_unlock_irqrestore(&sfp->rq_list_lock, iflags);
  1021                  return put_user(-1, ip);
  1022          case SG_GET_NUM_WAITING:
  1023                  read_lock_irqsave(&sfp->rq_list_lock, iflags);
  1024                  val = 0;
  1025                  list_for_each_entry(srp, &sfp->rq_list, entry) {
  1026                          if ((1 == srp->done) && (!srp->sg_io_owned))
  1027                                  ++val;
  1028                  }
  1029                  read_unlock_irqrestore(&sfp->rq_list_lock, iflags);
  1030                  return put_user(val, ip);
  1031          case SG_GET_SG_TABLESIZE:
  1032                  return put_user(sdp->sg_tablesize, ip);
  1033          case SG_SET_RESERVED_SIZE:
  1034                  result = get_user(val, ip);
  1035                  if (result)
  1036                          return result;
  1037                  if (val < 0)
  1038                          return -EINVAL;
  1039                  val = min_t(int, val,
  1040                              
max_sectors_bytes(sdp->device->request_queue));
  1041                  mutex_lock(&sfp->f_mutex);
  1042                  if (val != sfp->reserve.bufflen) {
  1043                          if (sfp->mmap_called ||
  1044                              sfp->res_in_use) {
  1045                                  mutex_unlock(&sfp->f_mutex);
  1046                                  return -EBUSY;
  1047                          }
  1048  
  1049                          sg_remove_scat(sfp, &sfp->reserve);
  1050                          sg_build_reserve(sfp, val);
  1051                  }
  1052                  mutex_unlock(&sfp->f_mutex);
  1053                  return 0;
  1054          case SG_GET_RESERVED_SIZE:
  1055                  val = min_t(int, sfp->reserve.bufflen,
  1056                              
max_sectors_bytes(sdp->device->request_queue));
  1057                  return put_user(val, ip);
  1058          case SG_SET_COMMAND_Q:
  1059                  result = get_user(val, ip);
  1060                  if (result)
  1061                          return result;
  1062                  sfp->cmd_q = val ? 1 : 0;
  1063                  return 0;
  1064          case SG_GET_COMMAND_Q:
  1065                  return put_user((int) sfp->cmd_q, ip);
  1066          case SG_SET_KEEP_ORPHAN:
  1067                  result = get_user(val, ip);
  1068                  if (result)
  1069                          return result;
  1070                  sfp->keep_orphan = val;
  1071                  return 0;
  1072          case SG_GET_KEEP_ORPHAN:
  1073                  return put_user((int) sfp->keep_orphan, ip);
  1074          case SG_NEXT_CMD_LEN:
  1075                  result = get_user(val, ip);
  1076                  if (result)
  1077                          return result;
  1078                  if (val > SG_MAX_CDB_SIZE)
  1079                          return -ENOMEM;
  1080                  sfp->next_cmd_len = (val > 0) ? val : 0;
  1081                  return 0;
  1082          case SG_GET_VERSION_NUM:
  1083                  return put_user(sg_version_num, ip);
  1084          case SG_GET_ACCESS_COUNT:
  1085                  /* faked - we don't have a real access count anymore */
  1086                  val = (sdp->device ? 1 : 0);
  1087                  return put_user(val, ip);
  1088          case SG_GET_REQUEST_TABLE:
  1089                  {
  1090                          sg_req_info_t *rinfo;
  1091  
  1092                          rinfo = kcalloc(SG_MAX_QUEUE, SZ_SG_REQ_INFO,
  1093                                          GFP_KERNEL);
  1094                          if (!rinfo)
  1095                                  return -ENOMEM;
  1096                          read_lock_irqsave(&sfp->rq_list_lock, iflags);
  1097                          sg_fill_request_table(sfp, rinfo);
  1098                          read_unlock_irqrestore(&sfp->rq_list_lock, 
iflags);
  1099          #ifdef CONFIG_COMPAT
  1100                          if (in_compat_syscall())
  1101                                  result = put_compat_request_table(p, 
rinfo);
  1102                          else
  1103          #endif
  1104                                  result = copy_to_user(p, rinfo,
  1105                                                        SZ_SG_REQ_INFO * 
SG_MAX_QUEUE);
  1106                          result = result ? -EFAULT : 0;
  1107                          kfree(rinfo);
  1108                          return result;
  1109                  }
  1110          case SG_EMULATED_HOST:
  1111                  if (atomic_read(&sdp->detaching))
  1112                          return -ENODEV;
  1113                  return put_user(sdp->device->host->hostt->emulated, ip);
  1114          case SCSI_IOCTL_SEND_COMMAND:
  1115                  if (atomic_read(&sdp->detaching))
  1116                          return -ENODEV;
  1117                  return sg_scsi_ioctl(sdp->device->request_queue, NULL, 
filp->f_mode, p);
  1118          case SG_SET_DEBUG:
  1119                  result = get_user(val, ip);
  1120                  if (result)
  1121                          return result;
  1122                  sdp->sgdebug = (char) val;
  1123                  return 0;
  1124          case BLKSECTGET:
  1125                  return 
put_user(max_sectors_bytes(sdp->device->request_queue),
  1126                                  ip);
  1127          case BLKTRACESETUP:
  1128                  return blk_trace_setup(sdp->device->request_queue,
  1129                                         sdp->disk->disk_name,
  1130                                         MKDEV(SCSI_GENERIC_MAJOR, 
sdp->index),
  1131                                         NULL, p);
  1132          case BLKTRACESTART:
  1133                  return blk_trace_startstop(sdp->device->request_queue, 
1);
  1134          case BLKTRACESTOP:
  1135                  return blk_trace_startstop(sdp->device->request_queue, 
0);
  1136          case BLKTRACETEARDOWN:
  1137                  return blk_trace_remove(sdp->device->request_queue);
  1138          case SCSI_IOCTL_GET_IDLUN:
  1139          case SCSI_IOCTL_GET_BUS_NUMBER:
  1140          case SCSI_IOCTL_PROBE_HOST:
  1141          case SG_GET_TRANSFORM:
  1142          case SG_SCSI_RESET:
  1143                  if (atomic_read(&sdp->detaching))
  1144                          return -ENODEV;
  1145                  break;
  1146          default:
  1147                  if (read_only)
  1148                          return -EPERM;  /* don't know so take safe 
approach */
  1149                  break;
  1150          }
  1151  
  1152          result = scsi_ioctl_block_when_processing_errors(sdp->device,
  1153                          cmd_in, filp->f_flags & O_NDELAY);
  1154          if (result)
  1155                  return result;
  1156  
  1157          return -ENOIOCTLCMD;
  1158  }
  1159  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org

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