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authorMariusz Kozlowski <m.kozlowski@tuxland.pl>2007-08-11 22:34:30 +0200
committerJens Axboe <jens.axboe@oracle.com>2007-08-11 22:34:48 +0200
commit2e4934aa4586832c35e077191849a06f93e4a9a0 (patch)
treea548f2408b19ed634e49520e995bffe279a303a7 /drivers/block
parent1aebe18787ca2e915eb8204d365ba2484d53223b (diff)
downloadop-kernel-dev-2e4934aa4586832c35e077191849a06f93e4a9a0.zip
op-kernel-dev-2e4934aa4586832c35e077191849a06f93e4a9a0.tar.gz
drivers/block/cpqarray.c: better error handling and kmalloc + memset conversion to k[cz]alloc
This patch removes some redundant casts, does the kmalloc + memset to k[cz]alloc conversion and it changes the error path to use goto (to avoid code duplication). drivers/block/cpqarray.c | 49567 -> 48623 (-944 bytes) drivers/block/cpqarray.o | 178820 -> 178288 (-532 bytes) Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Acked-by: Mike Miller <mike.miller@hp.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/cpqarray.c78
1 files changed, 26 insertions, 52 deletions
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c
index be4e3477d..eb9799a 100644
--- a/drivers/block/cpqarray.c
+++ b/drivers/block/cpqarray.c
@@ -420,18 +420,17 @@ static int __init cpqarray_register_ctlr( int i, struct pci_dev *pdev)
goto Enomem2;
}
- hba[i]->cmd_pool = (cmdlist_t *)pci_alloc_consistent(
+ hba[i]->cmd_pool = pci_alloc_consistent(
hba[i]->pci_dev, NR_CMDS * sizeof(cmdlist_t),
&(hba[i]->cmd_pool_dhandle));
- hba[i]->cmd_pool_bits = kmalloc(
- ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long),
+ hba[i]->cmd_pool_bits = kcalloc(
+ (NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG, sizeof(unsigned long),
GFP_KERNEL);
if (!hba[i]->cmd_pool_bits || !hba[i]->cmd_pool)
goto Enomem1;
memset(hba[i]->cmd_pool, 0, NR_CMDS * sizeof(cmdlist_t));
- memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long));
printk(KERN_INFO "cpqarray: Finding drives on %s",
hba[i]->devname);
@@ -1660,45 +1659,30 @@ static void getgeometry(int ctlr)
info_p->log_drv_map = 0;
- id_ldrive = kmalloc(sizeof(id_log_drv_t), GFP_KERNEL);
- if(id_ldrive == NULL)
- {
+ id_ldrive = kzalloc(sizeof(id_log_drv_t), GFP_KERNEL);
+ if (!id_ldrive) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_0;
}
- id_ctlr_buf = kmalloc(sizeof(id_ctlr_t), GFP_KERNEL);
- if(id_ctlr_buf == NULL)
- {
- kfree(id_ldrive);
+ id_ctlr_buf = kzalloc(sizeof(id_ctlr_t), GFP_KERNEL);
+ if (!id_ctlr_buf) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_1;
}
- id_lstatus_buf = kmalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL);
- if(id_lstatus_buf == NULL)
- {
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
+ id_lstatus_buf = kzalloc(sizeof(sense_log_drv_stat_t), GFP_KERNEL);
+ if (!id_lstatus_buf) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_2;
}
- sense_config_buf = kmalloc(sizeof(config_t), GFP_KERNEL);
- if(sense_config_buf == NULL)
- {
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
+ sense_config_buf = kzalloc(sizeof(config_t), GFP_KERNEL);
+ if (!sense_config_buf) {
printk( KERN_ERR "cpqarray: out of memory.\n");
- return;
+ goto err_3;
}
- memset(id_ldrive, 0, sizeof(id_log_drv_t));
- memset(id_ctlr_buf, 0, sizeof(id_ctlr_t));
- memset(id_lstatus_buf, 0, sizeof(sense_log_drv_stat_t));
- memset(sense_config_buf, 0, sizeof(config_t));
-
info_p->phys_drives = 0;
info_p->log_drv_map = 0;
info_p->drv_assign_map = 0;
@@ -1712,13 +1696,8 @@ static void getgeometry(int ctlr)
* so the idastubopen will fail on all logical drives
* on the controller.
*/
- /* Free all the buffers and return */
printk(KERN_ERR "cpqarray: error sending ID controller\n");
- kfree(sense_config_buf);
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
- return;
+ goto err_4;
}
info_p->log_drives = id_ctlr_buf->nr_drvs;
@@ -1764,12 +1743,7 @@ static void getgeometry(int ctlr)
" failed to report status of logical drive %d\n"
"Access to this controller has been disabled\n",
ctlr, log_unit);
- /* Free all the buffers and return */
- kfree(sense_config_buf);
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
- return;
+ goto err_4;
}
/*
Make sure the logical drive is configured
@@ -1798,14 +1772,8 @@ static void getgeometry(int ctlr)
sizeof(config_t), 0, 0, log_unit);
if (ret_code == IO_ERROR) {
info_p->log_drv_map = 0;
- /* Free all the buffers and return */
printk(KERN_ERR "cpqarray: error sending sense config\n");
- kfree(sense_config_buf);
- kfree(id_lstatus_buf);
- kfree(id_ctlr_buf);
- kfree(id_ldrive);
- return;
-
+ goto err_4;
}
info_p->phys_drives =
@@ -1820,12 +1788,18 @@ static void getgeometry(int ctlr)
log_index = log_index + 1;
} /* end of if logical drive configured */
} /* end of for log_unit */
+
+ /* Free all the buffers and return */
+err_4:
kfree(sense_config_buf);
- kfree(id_ldrive);
+err_3:
kfree(id_lstatus_buf);
+err_2:
kfree(id_ctlr_buf);
+err_1:
+ kfree(id_ldrive);
+err_0:
return;
-
}
static void __exit cpqarray_exit(void)
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