From: Julia Lawall <julia@diku.dk>
Date: Mon, 29 Mar 2010 15:37:02 +0000 (+0200)
Subject: ring-buffer: Add missing unlock
X-Git-Tag: v2.6.34-rc4~77^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=292f60c0c4ab44aa2d589ba03c12e64a3b3c5e38;p=pandora-kernel.git

ring-buffer: Add missing unlock

In some error handling cases the lock is not unlocked.  The return is
converted to a goto, to share the unlock at the end of the function.

A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@r exists@
expression E1;
identifier f;
@@

f (...) { <+...
* spin_lock_irq (E1,...);
... when != E1
* return ...;
...+> }
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
LKML-Reference: <Pine.LNX.4.64.1003291736440.21896@ask.diku.dk>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---

Reading git-diff-tree failed