From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.web.de (mout.web.de [212.227.17.11]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 7A5871A0185 for ; Fri, 21 Nov 2014 22:51:33 +1100 (AEDT) Message-ID: <546F25EE.5090601@users.sourceforge.net> Date: Fri, 21 Nov 2014 12:45:50 +0100 From: SF Markus Elfring MIME-Version: 1.0 To: Greg Kroah-Hartman , Jiri Slaby , linuxppc-dev@lists.ozlabs.org Subject: [PATCH 1/1] tty-hvsi_lib: Deletion of an unnecessary check before the function call "tty_kref_put" References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.sourceforge.net> In-Reply-To: <5317A59D.4@users.sourceforge.net> Content-Type: text/plain; charset=windows-1252 Cc: Julia Lawall , kernel-janitors@vger.kernel.org, LKML List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Markus Elfring Date: Fri, 21 Nov 2014 12:40:32 +0100 The tty_kref_put() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring --- drivers/tty/hvc/hvsi_lib.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/tty/hvc/hvsi_lib.c b/drivers/tty/hvc/hvsi_lib.c index 7ae6c29..a270f04 100644 --- a/drivers/tty/hvc/hvsi_lib.c +++ b/drivers/tty/hvc/hvsi_lib.c @@ -405,8 +405,7 @@ void hvsilib_close(struct hvsi_priv *pv, struct hvc_struct *hp) hvsi_send_close(pv); } - if (pv->tty) - tty_kref_put(pv->tty); + tty_kref_put(pv->tty); pv->tty = NULL; } -- 2.1.3