From: Julia Lawall <julia@diku.dk>
Date: Sat, 11 Jul 2009 08:32:23 +0000 (+0200)
Subject: Staging: otus: Drop an unnecessary NULL test
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=df6785681be9f05435f4299b921c41397ea061a1;p=deliverable%2Flinux.git

Staging: otus: Drop an unnecessary NULL test

Apparently, the NULL test is not necessary at this point.

The semantic patch that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
type T;
expression E;
identifier i,fld;
statement S;
@@

- T i = E->fld;
+ T i;
  ... when != E
      when != i
  if (E == NULL) S
+ i = E->fld;
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/otus/wwrap.c b/drivers/staging/otus/wwrap.c
index 4084ad05b0dd..53d2a45d55f9 100644
--- a/drivers/staging/otus/wwrap.c
+++ b/drivers/staging/otus/wwrap.c
@@ -1015,11 +1015,6 @@ void kevent(struct work_struct *work)
                container_of(work, struct usbdrv_private, kevent);
     zdev_t *dev = macp->device;
 
-    if (macp == NULL)
-    {
-        return;
-    }
-
     if (test_and_set_bit(0, (void *)&smp_kevent_Lock))
     {
         //schedule_work(&macp->kevent);