From: Julia Lawall <julia@diku.dk>
Date: Mon, 31 Aug 2009 19:34:25 +0000 (+0200)
Subject: Staging: rtl8192e: Drop unnecessary NULL test
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=18526c7896fca5229c8d7b4b415605a17f9952d0;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git

Staging: rtl8192e: Drop unnecessary NULL test

The result of container_of should not be NULL.  In particular, in this case
the argument to the enclosing function has passed though INIT_WORK, which
dereferences it, implying that its container cannot be NULL.

A simplified version of the semantic patch that makes this change is as
follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
identifier fn,work,x,fld;
type T;
expression E1,E2;
statement S;
@@

static fn(struct work_struct *work) {
  ... when != work = E1
  x = container_of(work,T,fld)
  ... when != x = E2
- if (x == NULL) S
  ...
}
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/staging/rtl8192e/r8192E_core.c b/drivers/staging/rtl8192e/r8192E_core.c
index 681488bf6534..d4fa65489655 100644
--- a/drivers/staging/rtl8192e/r8192E_core.c
+++ b/drivers/staging/rtl8192e/r8192E_core.c
@@ -1763,8 +1763,6 @@ static void rtl8192_qos_activate(struct work_struct * work)
 	u8  u1bAIFS;
 	u32 u4bAcParam;
         int i;
-        if (priv == NULL)
-                return;
 
         mutex_lock(&priv->mutex);
         if(priv->ieee80211->state != IEEE80211_LINKED)