From 3040c8203d68a9a0564af81729085054fd6b5b03 Mon Sep 17 00:00:00 2001
From: Julia Lawall <julia@diku.dk>
Date: Sun, 12 Jul 2009 09:42:47 +0200
Subject: [PATCH] HID: Drop NULL test on list_entry result

list_entry, which is an alias for container_of, cannot return NULL, as
there is no way to add a NULL value to a doubly linked list.

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

// <smpl>
@r@
expression x,E;
statement S1,S2;
position p,p1;
@@

*x = list_entry@p(...)
... when != x = E
*if@p1 (x == NULL) S1 else S2
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
---
Reading git-format-patch failed