cciss: call BUG() earlier

I moved the range check after the increment.  The current code would
write past the end of the array once before calling BUG().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c
index e1d0e2cfec72..3381505c8a6c 100644
--- a/drivers/block/cciss_scsi.c
+++ b/drivers/block/cciss_scsi.c
@@ -188,11 +188,11 @@ scsi_cmd_free(ctlr_info_t *h, CommandList_struct *cmd)
 
         sa = h->scsi_ctlr;
         stk = &sa->cmd_stack; 
+        stk->top++;
         if (stk->top >= CMD_STACK_SIZE) {
                 printk("cciss: scsi_cmd_free called too many times.\n");
                 BUG();
         }
-        stk->top++;
         stk->elem[stk->top] = (struct cciss_scsi_cmd_stack_elem_t *) cmd;
 }