From patchwork Sun Jul 9 20:57:44 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gustavo A. R. Silva" X-Patchwork-Id: 785961 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3x5N673YgGz9s0g for ; Mon, 10 Jul 2017 08:18:39 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752834AbdGIWSd (ORCPT ); Sun, 9 Jul 2017 18:18:33 -0400 Received: from gateway31.websitewelcome.com ([192.185.144.29]:21829 "EHLO gateway31.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752630AbdGIWSc (ORCPT ); Sun, 9 Jul 2017 18:18:32 -0400 X-Greylist: delayed 2105 seconds by postgrey-1.27 at vger.kernel.org; Sun, 09 Jul 2017 18:18:32 EDT Received: from cm12.websitewelcome.com (cm12.websitewelcome.com [100.42.49.8]) by gateway31.websitewelcome.com (Postfix) with ESMTP id 678AA155F6 for ; Sun, 9 Jul 2017 15:57:45 -0500 (CDT) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id UJGPdwgdyS3CiUJGPdndAN; Sun, 09 Jul 2017 15:57:09 -0500 Received: from [189.152.152.176] (port=40074 helo=embeddedgus) by gator4166.hostgator.com with esmtpa (Exim 4.87) (envelope-from ) id 1dUJGz-000oLj-5A; Sun, 09 Jul 2017 15:57:45 -0500 Date: Sun, 9 Jul 2017 15:57:44 -0500 From: "Gustavo A. R. Silva" To: Wolfram Sang , Maxime Coquelin , Alexandre Torgue Cc: linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, "Gustavo A. R. Silva" Subject: [PATCH] i2c: stm32f4: constify i2c_algorithm structure Message-ID: <20170709205744.GA18652@embeddedgus> MIME-Version: 1.0 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: 1dUJGz-000oLj-5A X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: (embeddedgus) [189.152.152.176]:40074 X-Source-Auth: garsilva@embeddedor.com X-Email-Count: 4 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= Sender: linux-i2c-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-i2c@vger.kernel.org Check for i2c_algorithm structures that are only stored in the algo field of an i2c_adapter structure. This field is declared const, so i2c_algorithm structures that have this property can be declared as const also. This issue was identified using Coccinelle and the following semantic patch: @r disable optional_qualifier@ identifier i; position p; @@ static struct i2c_algorithm i@p = { ... }; @ok@ identifier r.i; struct i2c_adapter e; position p; @@ e.algo = &i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; @@ i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct i2c_algorithm i = { ... }; Signed-off-by: Gustavo A. R. Silva --- drivers/i2c/busses/i2c-stm32f4.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/i2c/busses/i2c-stm32f4.c b/drivers/i2c/busses/i2c-stm32f4.c index f9dd7e8..9d6f110 100644 --- a/drivers/i2c/busses/i2c-stm32f4.c +++ b/drivers/i2c/busses/i2c-stm32f4.c @@ -751,7 +751,7 @@ static u32 stm32f4_i2c_func(struct i2c_adapter *adap) return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL; } -static struct i2c_algorithm stm32f4_i2c_algo = { +static const struct i2c_algorithm stm32f4_i2c_algo = { .master_xfer = stm32f4_i2c_xfer, .functionality = stm32f4_i2c_func, };