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cciss: eliminate unnecessary pointer use in cciss scsi code 

cciss: eliminate unnecessary pointer use in cciss scsi code
An extra level of indirection was being used in some places
for no real reason.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Stephen M. Cameron 2010-02-26 16:01:47 -06:00 коммит произвёл Jens Axboe
Родитель aad9fb6f2c
Коммит bf88737818
1 изменённых файлов: 15 добавлений и 16 удалений
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31
drivers/block/cciss_scsi.c
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@ -1400,7 +1400,7 @@ cciss_scatter_gather(struct pci_dev *pdev,
static int
cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
{
ctlr_info_t **c;
ctlr_info_t *c;
int ctlr, rc;
unsigned char scsi3addr[8];
CommandList_struct *cp;
@ -1408,8 +1408,8 @@ cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd
// Get the ptr to our adapter structure (hba[i]) out of cmd->host.
// We violate cmd->host privacy here. (Is there another way?)
c = (ctlr_info_t **) &cmd->device->host->hostdata[0];
ctlr = (*c)->ctlr;
c = (ctlr_info_t *) cmd->device->host->hostdata[0];
ctlr = c->ctlr;
rc = lookup_scsi3addr(ctlr, cmd->device->channel, cmd->device->id,
cmd->device->lun, scsi3addr);
@ -1432,7 +1432,7 @@ cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd
see what the device thinks of it. */
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
cp = scsi_cmd_alloc(*c);
cp = scsi_cmd_alloc(c);
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
if (cp == NULL) { /* trouble... */
printk("scsi_cmd_alloc returned NULL!\n");
@ -1490,15 +1490,14 @@ cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd
BUG();
break;
}
cciss_scatter_gather((*c)->pdev, cp, cmd); // Fill the SG list
cciss_scatter_gather(c->pdev, cp, cmd);
/* Put the request on the tail of the request queue */
spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
addQ(&(*c)->reqQ, cp);
(*c)->Qdepth++;
start_io(*c);
addQ(&c->reqQ, cp);
c->Qdepth++;
start_io(c);
spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags);
/* the cmd'll come back via intr handler in complete_scsi_command() */
@ -1655,14 +1654,14 @@ static int cciss_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
int rc;
CommandList_struct *cmd_in_trouble;
unsigned char lunaddr[8];
ctlr_info_t **c;
ctlr_info_t *c;
int ctlr;
/* find the controller to which the command to be aborted was sent */
c = (ctlr_info_t **) &scsicmd->device->host->hostdata[0];
c = (ctlr_info_t *) scsicmd->device->host->hostdata[0];
if (c == NULL) /* paranoia */
return FAILED;
ctlr = (*c)->ctlr;
ctlr = c->ctlr;
printk(KERN_WARNING "cciss%d: resetting tape drive or medium changer.\n", ctlr);
/* find the command that's giving us trouble */
cmd_in_trouble = (CommandList_struct *) scsicmd->host_scribble;
@ -1672,7 +1671,7 @@ static int cciss_eh_device_reset_handler(struct scsi_cmnd *scsicmd)
/* send a reset to the SCSI LUN which the command was sent to */
rc = sendcmd_withirq(CCISS_RESET_MSG, ctlr, NULL, 0, 0, lunaddr,
TYPE_MSG);
if (rc == 0 && wait_for_device_to_become_ready(*c, lunaddr) == 0)
if (rc == 0 && wait_for_device_to_become_ready(c, lunaddr) == 0)
return SUCCESS;
printk(KERN_WARNING "cciss%d: resetting device failed.\n", ctlr);
return FAILED;
@ -1683,14 +1682,14 @@ static int cciss_eh_abort_handler(struct scsi_cmnd *scsicmd)
int rc;
CommandList_struct *cmd_to_abort;
unsigned char lunaddr[8];
ctlr_info_t **c;
ctlr_info_t *c;
int ctlr;
/* find the controller to which the command to be aborted was sent */
c = (ctlr_info_t **) &scsicmd->device->host->hostdata[0];
c = (ctlr_info_t *) scsicmd->device->host->hostdata[0];
if (c == NULL) /* paranoia */
return FAILED;
ctlr = (*c)->ctlr;
ctlr = c->ctlr;
printk(KERN_WARNING "cciss%d: aborting tardy SCSI cmd\n", ctlr);
/* find the command to be aborted */