From patchwork Thu Jan 7 13:24:11 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heikki Krogerus X-Patchwork-Id: 7977411 Return-Path: X-Original-To: patchwork-linux-pm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 262D2BEEE5 for ; Thu, 7 Jan 2016 13:26:26 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 83634201BB for ; Thu, 7 Jan 2016 13:26:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C921C2017E for ; Thu, 7 Jan 2016 13:26:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752234AbcAGN0X (ORCPT ); Thu, 7 Jan 2016 08:26:23 -0500 Received: from mga02.intel.com ([134.134.136.20]:12560 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752040AbcAGN0X (ORCPT ); Thu, 7 Jan 2016 08:26:23 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 07 Jan 2016 05:26:23 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,533,1444719600"; d="scan'208,223";a="885612673" Received: from kuha.fi.intel.com ([10.237.72.60]) by orsmga002.jf.intel.com with SMTP; 07 Jan 2016 05:26:19 -0800 Received: by kuha.fi.intel.com (sSMTP sendmail emulation); Thu, 07 Jan 2016 15:24:11 +0200 Date: Thu, 7 Jan 2016 15:24:11 +0200 From: Heikki Krogerus To: Andy Shevchenko Cc: Tejun Heo , Linus Walleij , Dmitry Eremin-Solenikov , linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, "David S. Miller" , David Airlie , Andrew Morton , Rasmus Villemoes Subject: Re: [PATCH v1 1/8] lib/string: introduce match_string() helper Message-ID: <20160107132411.GB9935@kuha.fi.intel.com> References: <1452168368-75630-1-git-send-email-andriy.shevchenko@linux.intel.com> <20160107130743.GA9935@kuha.fi.intel.com> <1452172320.30729.409.camel@linux.intel.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1452172320.30729.409.camel@linux.intel.com> User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, T_TVD_MIME_EPI, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP On Thu, Jan 07, 2016 at 03:12:00PM +0200, Andy Shevchenko wrote: > On Thu, 2016-01-07 at 15:07 +0200, Heikki Krogerus wrote: > > On Thu, Jan 07, 2016 at 02:06:01PM +0200, Andy Shevchenko wrote: > > > > From time to time we have to match a string in an array. Make a > > > > simple helper > > > for that purpose. > > > > Cool! If you make v2 out of these, could you patch the following > > while > > at it: > > Yes, please, format as a usual patch and share with me. I will include > in v3 (actually I missed the numbering here, it should be v2 already). Sure thing. Here's the patch. diff --git a/drivers/usb/common/common.c b/drivers/usb/common/common.c index e6ec125..677b3f0 100644 --- a/drivers/usb/common/common.c +++ b/drivers/usb/common/common.c @@ -64,18 +64,15 @@ EXPORT_SYMBOL_GPL(usb_speed_string); enum usb_device_speed usb_get_maximum_speed(struct device *dev) { const char *maximum_speed; - int err; - int i; + int ret; - err = device_property_read_string(dev, "maximum-speed", &maximum_speed); - if (err < 0) + ret = device_property_read_string(dev, "maximum-speed", &maximum_speed); + if (ret < 0) return USB_SPEED_UNKNOWN; - for (i = 0; i < ARRAY_SIZE(speed_names); i++) - if (strcmp(maximum_speed, speed_names[i]) == 0) - return i; + ret = match_string(speed_names, ARRAY_SIZE(speed_names), maximum_speed); - return USB_SPEED_UNKNOWN; + return (ret < 0) ? USB_SPEED_UNKNOWN : ret; } EXPORT_SYMBOL_GPL(usb_get_maximum_speed); @@ -109,13 +106,10 @@ static const char *const usb_dr_modes[] = { static enum usb_dr_mode usb_get_dr_mode_from_string(const char *str) { - int i; - - for (i = 0; i < ARRAY_SIZE(usb_dr_modes); i++) - if (!strcmp(usb_dr_modes[i], str)) - return i; + int ret; - return USB_DR_MODE_UNKNOWN; + ret = match_string(usb_dr_modes, ARRAY_SIZE(usb_dr_modes), str); + return (ret < 0) ? USB_DR_MODE_UNKNOWN : ret; } enum usb_dr_mode usb_get_dr_mode(struct device *dev)