lkml.org 
[lkml]   [2010]   [Feb]   [26]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Subject[PATCH 7/9] cciss: do not use void pointer for scsi hba data
From
Date
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>

cciss: do not use void pointer for scsi hba data
and get rid of related unnecessary type casting
and delete some superfluous and misleading comments nearby.

Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/block/cciss.h | 4 +---
drivers/block/cciss_scsi.c | 23 ++++++++++-------------
2 files changed, 11 insertions(+), 16 deletions(-)
diff --git a/drivers/block/cciss.h b/drivers/block/cciss.h
index ac454fd..c5d4111 100644
--- a/drivers/block/cciss.h
+++ b/drivers/block/cciss.h
@@ -131,9 +131,7 @@ struct ctlr_info
/* Disk structures we need to pass back */
struct gendisk *gendisk[CISS_MAX_LUN];
#ifdef CONFIG_CISS_SCSI_TAPE
- void *scsi_ctlr; /* ptr to structure containing scsi related stuff */
- /* list of block side commands the scsi error handling sucked up */
- /* and saved for later processing */
+ struct cciss_scsi_adapter_data_t *scsi_ctlr;
#endif
unsigned char alive;
struct list_head scan_list;
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index f203606..c458232 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -127,11 +127,9 @@ struct cciss_scsi_adapter_data_t {
};

#define CPQ_TAPE_LOCK(ctlr, flags) spin_lock_irqsave( \
- &(((struct cciss_scsi_adapter_data_t *) \
- hba[ctlr]->scsi_ctlr)->lock), flags);
+ &hba[ctlr]->scsi_ctlr->lock, flags);
#define CPQ_TAPE_UNLOCK(ctlr, flags) spin_unlock_irqrestore( \
- &(((struct cciss_scsi_adapter_data_t *) \
- hba[ctlr]->scsi_ctlr)->lock), flags);
+ &hba[ctlr]->scsi_ctlr->lock, flags);

static CommandList_struct *
scsi_cmd_alloc(ctlr_info_t *h)
@@ -147,7 +145,7 @@ scsi_cmd_alloc(ctlr_info_t *h)
struct cciss_scsi_cmd_stack_t *stk;
u64bit temp64;

- sa = (struct cciss_scsi_adapter_data_t *) h->scsi_ctlr;
+ sa = h->scsi_ctlr;
stk = &sa->cmd_stack;

if (stk->top < 0)
@@ -186,7 +184,7 @@ scsi_cmd_free(ctlr_info_t *h, CommandList_struct *cmd)
struct cciss_scsi_adapter_data_t *sa;
struct cciss_scsi_cmd_stack_t *stk;

- sa = (struct cciss_scsi_adapter_data_t *) h->scsi_ctlr;
+ sa = h->scsi_ctlr;
stk = &sa->cmd_stack;
if (stk->top >= CMD_STACK_SIZE) {
printk("cciss: scsi_cmd_free called too many times.\n");
@@ -233,7 +231,7 @@ scsi_cmd_stack_free(int ctlr)
struct cciss_scsi_cmd_stack_t *stk;
size_t size;

- sa = (struct cciss_scsi_adapter_data_t *) hba[ctlr]->scsi_ctlr;
+ sa = hba[ctlr]->scsi_ctlr;
stk = &sa->cmd_stack;
if (stk->top != CMD_STACK_SIZE-1) {
printk( "cciss: %d scsi commands are still outstanding.\n",
@@ -534,8 +532,7 @@ adjust_cciss_scsi_table(int ctlr, int hostno,
CPQ_TAPE_LOCK(ctlr, flags);

if (hostno != -1) /* if it's not the first time... */
- sh = ((struct cciss_scsi_adapter_data_t *)
- hba[ctlr]->scsi_ctlr)->scsi_host;
+ sh = hba[ctlr]->scsi_ctlr->scsi_host;

/* find any devices in ccissscsi[] that are not in
sd[] and remove them from ccissscsi[] */
@@ -706,7 +703,7 @@ cciss_scsi_setup(int cntl_num)
kfree(shba);
shba = NULL;
}
- hba[cntl_num]->scsi_ctlr = (void *) shba;
+ hba[cntl_num]->scsi_ctlr = shba;
return;
}

@@ -853,7 +850,7 @@ cciss_scsi_detect(int ctlr)
sh->this_id = SELF_SCSI_ID;

((struct cciss_scsi_adapter_data_t *)
- hba[ctlr]->scsi_ctlr)->scsi_host = (void *) sh;
+ hba[ctlr]->scsi_ctlr)->scsi_host = sh;
sh->hostdata[0] = (unsigned long) hba[ctlr];
sh->irq = hba[ctlr]->intr[SIMPLE_MODE_INT];
sh->unique_id = sh->irq;
@@ -1518,7 +1515,7 @@ cciss_unregister_scsi(int ctlr)
/* we are being forcibly unloaded, and may not refuse. */

spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- sa = (struct cciss_scsi_adapter_data_t *) hba[ctlr]->scsi_ctlr;
+ sa = hba[ctlr]->scsi_ctlr;
stk = &sa->cmd_stack;

/* if we weren't ever actually registered, don't unregister */
@@ -1545,7 +1542,7 @@ cciss_engage_scsi(int ctlr)
unsigned long flags;

spin_lock_irqsave(CCISS_LOCK(ctlr), flags);
- sa = (struct cciss_scsi_adapter_data_t *) hba[ctlr]->scsi_ctlr;
+ sa = hba[ctlr]->scsi_ctlr;
stk = &sa->cmd_stack;

if (sa->registered) {


\
 
 \ /
  Last update: 2010-02-26 23:01    [from the cache]
©2003-2011 Jasper Spaans