From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Peter 'p2' De Schrijver" Subject: Re: [patch] kill compile warning on twl4030-power.c Date: Mon, 15 Sep 2008 20:30:20 +0300 Message-ID: <20080915173020.GI4712@codecarver.research.nokia.com> References: <20080915151208.GA17076@frodo> <20080915155512.GF4712@codecarver.research.nokia.com> <20080915162122.GB17076@frodo> <20080915162421.GH4712@codecarver.research.nokia.com> <20080915163611.GE17076@frodo> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from smtp.nokia.com ([192.100.105.134]:34728 "EHLO mgw-mx09.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752314AbYIORa3 (ORCPT ); Mon, 15 Sep 2008 13:30:29 -0400 Content-Disposition: inline In-Reply-To: <20080915163611.GE17076@frodo> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: ext Felipe Balbi Cc: Linux OMAP Mailing List > > > -#if defined(CONFIG_MACH_OMAP_3430SDP) || defined(CONFIG_MACH_OMAP_3430LABRADOR) > > > - /* Disabling AC charger effect on sleep-active transitions */ > > > - err |= twl4030_i2c_read_u8(TWL4030_MODULE_PM_MASTER, &data, > > > - R_CFG_P1_TRANSITION); > > > - data &= 0x0; > > > > This does not make sense :) > > Why not? That data variable is only used on 3430SDP and LABRADOR > anyways. Any other build will keep generating "unused variable" warnings > and that's annoying :-p Because a logical and with 0 will always result in 0. So the read is useless. So the original code is probably wrong. Cheers, Peter. -- goa is a state of mind