From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752537AbdGRXHR (ORCPT ); Tue, 18 Jul 2017 19:07:17 -0400 Received: from gateway23.websitewelcome.com ([192.185.50.107]:17527 "EHLO gateway23.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752331AbdGRXHQ (ORCPT ); Tue, 18 Jul 2017 19:07:16 -0400 Date: Tue, 18 Jul 2017 18:07:12 -0500 From: "Gustavo A. R. Silva" To: Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] crypto: img-hash: remove unnecessary static in img_hash_remove() Message-ID: <20170718230712.GA15507@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: 189.152.228.197 X-Exim-ID: 1dXbaD-002Tq7-Hn X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedgus) [189.152.228.197]:57498 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 16 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Remove unnecessary static on local variable hdev. Such variable is initialized before being used, on every execution path throughout the function. The static has no benefit and, removing it reduces the object file size. This issue was detected using Coccinelle and the following semantic patch: https://github.com/GustavoARSilva/coccinelle/blob/master/static/static_unused.cocci In the following log you can see a significant difference in the object file size. This log is the output of the size command, before and after the code change: before: text data bss dec hex filename 14842 6464 128 21434 53ba drivers/crypto/img-hash.o after: text data bss dec hex filename 14789 6376 64 21229 52ed drivers/crypto/img-hash.o Signed-off-by: Gustavo A. R. Silva --- drivers/crypto/img-hash.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/crypto/img-hash.c b/drivers/crypto/img-hash.c index 0c6a917..b87000a 100644 --- a/drivers/crypto/img-hash.c +++ b/drivers/crypto/img-hash.c @@ -1054,7 +1054,7 @@ static int img_hash_probe(struct platform_device *pdev) static int img_hash_remove(struct platform_device *pdev) { - static struct img_hash_dev *hdev; + struct img_hash_dev *hdev; hdev = platform_get_drvdata(pdev); spin_lock(&img_hash.lock); -- 2.5.0