[PATCH] [SCSI] bnx2fc: Use kcalloc instead of kzalloc to allocate array

[PATCH] [SCSI] bnx2fc: Use kcalloc instead of kzalloc to allocate array

[Thomas Meyer]

The advantage of kcalloc is, that will prevent integer overflows which could
result from the multiplication of number of elements and size and it is also
a bit nicer to read.

The semantic patch that makes this change is available
in https://lkml.org/lkml/2011/11/25/107

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
---

diff -u -p a/drivers/scsi/bnx2fc/bnx2fc_io.c b/drivers/scsi/bnx2fc/bnx2fc_io.c
--- a/drivers/scsi/bnx2fc/bnx2fc_io.c 2011-11-13 11:07:46.087131212 +0100
+++ b/drivers/scsi/bnx2fc/bnx2fc_io.c 2011-11-28 20:02:42.476121413 +0100
@@ -270,15 +270,15 @@ struct bnx2fc_cmd_mgr *bnx2fc_cmd_mgr_al
 		return NULL;
 	}
 
-	cmgr->free_list = kzalloc(sizeof(*cmgr->free_list) *
-				  arr_sz, GFP_KERNEL);
+	cmgr->free_list = kcalloc(arr_sz, sizeof(*cmgr->free_list),
+				  GFP_KERNEL);
 	if (!cmgr->free_list) {
 		printk(KERN_ERR PFX "failed to alloc free_list\n");
 		goto mem_err;
 	}
 
-	cmgr->free_list_lock = kzalloc(sizeof(*cmgr->free_list_lock) *
-				       arr_sz, GFP_KERNEL);
+	cmgr->free_list_lock = kcalloc(arr_sz, sizeof(*cmgr->free_list_lock),
+				       GFP_KERNEL);
 	if (!cmgr->free_list_lock) {
 		printk(KERN_ERR PFX "failed to alloc free_list_lock\n");
 		goto mem_err;