Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757247AbXFSMYW (ORCPT ); Tue, 19 Jun 2007 08:24:22 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754123AbXFSMYO (ORCPT ); Tue, 19 Jun 2007 08:24:14 -0400 Received: from mx0.towertech.it ([213.215.222.73]:43850 "HELO mx0.towertech.it" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753162AbXFSMYN (ORCPT ); Tue, 19 Jun 2007 08:24:13 -0400 Date: Tue, 19 Jun 2007 14:24:04 +0200 From: Alessandro Zummo To: rtc-linux@googlegroups.com Cc: tino.keitel@gmx.de, Yoichi Yuasa , linux-kernel@vger.kernel.org Subject: Re: [rtc-linux] Re: rtc_cmos: error after first write to wakealarm Message-ID: <20070619142404.42dcdc3c@inspiron> In-Reply-To: <20070615070319.GA19455@dose.home.local> References: <20070615063308.GA18089@dose.home.local> <20070615155904.1d1da892.yoichi_yuasa@tripeaks.co.jp> <20070615070319.GA19455@dose.home.local> Organization: Tower Technologies X-Mailer: Sylpheed Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1229 Lines: 41 On Fri, 15 Jun 2007 09:03:19 +0200 Tino Keitel wrote: > > > I have the following strange behaviour with rtc_cmos: > > > > > > $ echo 1181934240 > /sys/class/rtc/rtc0/wakealarm > > > bash: echo: write error: Device or resource busy > > > $ rmmod rtc_cmos > > > $ modprobe rtc_cmos > > > $ echo 1181934240 > /sys/class/rtc/rtc0/wakealarm > > > $ echo 1181934240 > /sys/class/rtc/rtc0/wakealarm > > > bash: echo: write error: Device or resource busy > > > $ > > > > If the alarm has already been enabled, you cannot set the next alarm. > > You should disable first. > > Ah, ok. > > Where is the documentation that describes that I have to disable it > first, and how to do this? A migration document for /proc/acpi/alarm > users would be nice, too. Well, I guess there is no documentation. Maybe we could add a dev_warn with an explicit message. -- Best regards, Alessandro Zummo, Tower Technologies - Torino, Italy http://www.towertech.it - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/