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author | Mariusz Kozlowski <m.kozlowski@tuxland.pl> | 2007-08-11 22:34:30 +0200 |
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committer | Jens Axboe <jens.axboe@oracle.com> | 2007-08-11 22:34:48 +0200 |
commit | 2e4934aa4586832c35e077191849a06f93e4a9a0 (patch) | |
tree | a548f2408b19ed634e49520e995bffe279a303a7 /drivers/block | |
parent | 1aebe18787ca2e915eb8204d365ba2484d53223b (diff) | |
download | linux-2e4934aa4586832c35e077191849a06f93e4a9a0.tar.gz linux-2e4934aa4586832c35e077191849a06f93e4a9a0.tar.bz2 linux-2e4934aa4586832c35e077191849a06f93e4a9a0.zip |
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.c | 78 |
1 files changed, 26 insertions, 52 deletions
diff --git a/drivers/block/cpqarray.c b/drivers/block/cpqarray.c index be4e3477d83b..eb9799acf65b 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) |