atm: idt77252: Remove redundant error check
authorPeter Senna Tschudin <peter.senna@gmail.com>
Mon, 19 May 2014 10:26:52 +0000 (12:26 +0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 21 May 2014 19:56:26 +0000 (15:56 -0400)
Remove double checks, convert printk to pr_warn, and move the call to
pr_warn to the first check. The simplified version of the coccinelle
semantic patch that find this issue is as follows:

// <smpl>
@@
expression E; identifier pr; expression list es;
@@
while(...){
...
-       if (E) break;
+       if (E){
+               pr(es);
+               break;
+       }
...
}
- if(E) pr(es);
// </smpl>

Tested by compilation only.

Signed-off-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/atm/idt77252.c

index 1bdf104e90bb7f1924acf51f78caa39817d78efb..b621f56a36be5850b1abc4d1619b665fbce7ccf3 100644 (file)
@@ -2551,12 +2551,12 @@ done:
                timeout = 5 * 1000;
                while (atomic_read(&vc->scq->used) > 0) {
                        timeout = msleep_interruptible(timeout);
-                       if (!timeout)
+                       if (!timeout) {
+                               pr_warn("%s: SCQ drain timeout: %u used\n",
+                                       card->name, atomic_read(&vc->scq->used));
                                break;
+                       }
                }
-               if (!timeout)
-                       printk("%s: SCQ drain timeout: %u used\n",
-                              card->name, atomic_read(&vc->scq->used));
 
                writel(TCMDQ_HALT | vc->index, SAR_REG_TCMDQ);
                clear_scd(card, vc->scq, vc->class);