From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751396AbdGQPwi (ORCPT ); Mon, 17 Jul 2017 11:52:38 -0400 Received: from gateway23.websitewelcome.com ([192.185.50.250]:46282 "EHLO gateway23.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751293AbdGQPwg (ORCPT ); Mon, 17 Jul 2017 11:52:36 -0400 X-Greylist: delayed 1335 seconds by postgrey-1.27 at vger.kernel.org; Mon, 17 Jul 2017 11:52:36 EDT Date: Mon, 17 Jul 2017 10:30:20 -0500 From: "Gustavo A. R. Silva" To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai Cc: alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] ASoC: rsnd: remove unnecessary static in rsnd_ssiu_probe() Message-ID: <20170717153020.GA19704@embeddedgus> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.152.152.176 X-Exim-ID: 1dX7yW-001p8H-TZ X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedgus) [189.152.152.176]:49430 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 6 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remove unnecessary static on local variable ops. Such variable is initialized before being used, on every execution path throughout the function. The static has no benefit and, removing it reduces the code size. This issue was detected using Coccinelle and the following semantic patch: @bad exists@ position p; identifier x; type T; @@ static T x@p; ... x = <+...x...+> @@ identifier x; expression e; type T; position p != bad.p; @@ -static T x@p; ... when != x when strict ?x = e; In the following log you can see the difference in the code size. Also, there is a significant difference in the bss segment. This log is the output of the size command, before and after the code change: before: text data bss dec hex filename 3211 680 64 3955 f73 sound/soc/sh/rcar/ssiu.o after: text data bss dec hex filename 3207 592 0 3799 ed7 sound/soc/sh/rcar/ssiu.o Signed-off-by: Gustavo A. R. Silva --- sound/soc/sh/rcar/ssiu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/sh/rcar/ssiu.c b/sound/soc/sh/rcar/ssiu.c index bed2c9c..4d94875 100644 --- a/sound/soc/sh/rcar/ssiu.c +++ b/sound/soc/sh/rcar/ssiu.c @@ -250,7 +250,7 @@ int rsnd_ssiu_probe(struct rsnd_priv *priv) { struct device *dev = rsnd_priv_to_dev(priv); struct rsnd_ssiu *ssiu; - static struct rsnd_mod_ops *ops; + struct rsnd_mod_ops *ops; int i, nr, ret; /* same number to SSI */ -- 2.5.0