[PATCH 4/5][resend 2] stex: Small fixes

["ed.lin" <ed.lin@promise.com>]

Some small fixes, including:
- add data direction in req_msg because new firmware version may require this 
(backward compatible)
- change internal timeout value
- change judgment of type st_vsc1
- blank line handling, etc.

Signed-off-by: Ed Lin <ed.lin@promise.com>
---

diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c
index 425a61c..c1a79c3 100644
--- a/drivers/scsi/stex.c
+++ b/drivers/scsi/stex.c
@@ -103,7 +103,7 @@ enum {
  MU_REQ_COUNT    = (MU_MAX_REQUEST + 1),
  MU_STATUS_COUNT    = (MU_MAX_REQUEST + 1),
 
- STEX_CDB_LENGTH    = MAX_COMMAND_SIZE,
+ STEX_CDB_LENGTH    = 16,
  REQ_VARIABLE_LEN   = 1024,
  STATUS_VAR_LEN    = 128,
  ST_CAN_QUEUE    = MU_MAX_REQUEST,
@@ -114,6 +114,9 @@ enum {
  SG_CF_EOT    = 0x80, /* end of table */
  SG_CF_64B    = 0x40, /* 64 bit item */
  SG_CF_HOST    = 0x20, /* sg in host memory */
+ MSG_DATA_DIR_ND    = 0,
+ MSG_DATA_DIR_IN    = 1,
+ MSG_DATA_DIR_OUT   = 2,
 
  st_shasta    = 0,
  st_vsc     = 1,
@@ -123,7 +126,7 @@ enum {
 
  PASSTHRU_REQ_TYPE   = 0x00000001,
  PASSTHRU_REQ_NO_WAKEUP   = 0x00000100,
- ST_INTERNAL_TIMEOUT   = 30,
+ ST_INTERNAL_TIMEOUT   = 180,
 
  ST_TO_CMD    = 0,
  ST_FROM_CMD    = 1,
@@ -194,7 +197,7 @@ struct req_msg {
  u8 target;
  u8 task_attr;
  u8 task_manage;
- u8 prd_entry;
+ u8 data_dir;
  u8 payload_sz;  /* payload size in 4-byte, not used */
  u8 cdb[STEX_CDB_LENGTH];
  u8 variable[REQ_VARIABLE_LEN];
@@ -318,8 +321,8 @@ MODULE_VERSION(ST_DRIVER_VERSION);
 static void stex_gettime(__le32 *time)
 {
  struct timeval tv;
- do_gettimeofday(&tv);
 
+ do_gettimeofday(&tv);
  *time = cpu_to_le32(tv.tv_sec & 0xffffffff);
  *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
 }
@@ -340,7 +343,7 @@ static void stex_invalid_field(struct scsi_cmnd *cmd,
 {
  cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
 
- /* "Invalid field in cbd" */
+ /* "Invalid field in cdb" */
  scsi_build_sense_buffer(0, cmd->sense_buffer, ILLEGAL_REQUEST, 0x24,
     0x0);
  done(cmd);
@@ -469,6 +472,7 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
  unsigned int id,lun;
  struct req_msg *req;
  u16 tag;
+
  host = cmd->device->host;
  id = cmd->device->id;
  lun = cmd->device->lun;
@@ -480,6 +484,7 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
   static char ms10_caching_page[12] =
    { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
   unsigned char page;
+
   page = cmd->cmnd[2] & 0x3f;
   if (page == 0x8 || page == 0x3f) {
    scsi_sg_copy_from_buffer(cmd, ms10_caching_page,
@@ -523,6 +528,7 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
   if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
    struct st_drvver ver;
    size_t cp_len = sizeof(ver);
+
    ver.major = ST_VER_MAJOR;
    ver.minor = ST_VER_MINOR;
    ver.oem = ST_OEM;
@@ -556,6 +562,13 @@ stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
  /* cdb */
  memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
 
+ if (cmd->sc_data_direction == DMA_FROM_DEVICE)
+  req->data_dir = MSG_DATA_DIR_IN;
+ else if (cmd->sc_data_direction == DMA_TO_DEVICE)
+  req->data_dir = MSG_DATA_DIR_OUT;
+ else
+  req->data_dir = MSG_DATA_DIR_ND;
+
  hba->ccb[tag].cmd = cmd;
  hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
  hba->ccb[tag].sense_buffer = cmd->sense_buffer;
@@ -614,6 +627,7 @@ static void stex_copy_data(struct st_ccb *ccb,
  struct status_msg *resp, unsigned int variable)
 {
  size_t count = variable;
+
  if (resp->scsi_status != SAM_STAT_GOOD) {
   if (ccb->sense_buffer != NULL)
    memcpy(ccb->sense_buffer, resp->variable,
@@ -938,6 +952,7 @@ static int stex_reset(struct scsi_cmnd *cmd)
  struct st_hba *hba;
  unsigned long flags;
  unsigned long before;
+
  hba = (struct st_hba *) &cmd->device->host->hostdata[0];
 
  printk(KERN_INFO DRV_NAME
@@ -1022,6 +1037,7 @@ static struct scsi_host_template driver_template = {
 static int stex_set_dma_mask(struct pci_dev * pdev)
 {
  int ret;
+
  if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
   && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
   return 0;
@@ -1079,7 +1095,7 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
  }
 
  hba->cardtype = (unsigned int) id->driver_data;
- if (hba->cardtype == st_vsc && (pdev->subsystem_device & 0xf) == 0x1)
+ if (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))
   hba->cardtype = st_vsc1;
  hba->dma_size = (hba->cardtype == st_vsc1 || hba->cardtype == st_seq) ?
   (STEX_BUFFER_SIZE + ST_ADDITIONAL_MEM) : (STEX_BUFFER_SIZE);