Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1750774AbWATL4F (ORCPT ); Fri, 20 Jan 2006 06:56:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750860AbWATL4F (ORCPT ); Fri, 20 Jan 2006 06:56:05 -0500 Received: from outmx028.isp.belgacom.be ([195.238.5.49]:12254 "EHLO outmx028.isp.belgacom.be") by vger.kernel.org with ESMTP id S1750774AbWATL4D (ORCPT ); Fri, 20 Jan 2006 06:56:03 -0500 Date: Fri, 20 Jan 2006 12:55:43 +0100 From: Wim Van Sebroeck To: Alan Cox Cc: Marcelo Tosatti , Kumar Gala , Andrew Morton , linux-kernel@vger.kernel.org, linuxppc-embedded@ozlabs.org Subject: Re: [PATCH] powerpc: remove useless spinlock from mpc83xx watchdog Message-ID: <20060120115543.GA6174@infomag.infomag.iguana.be> References: <1137664156.8471.16.camel@localhost.localdomain> <20060119164811.GB4418@dmt.cnet> <1137708739.8471.69.camel@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1137708739.8471.69.camel@localhost.localdomain> User-Agent: Mutt/1.4.1i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 766 Lines: 28 All, > On Iau, 2006-01-19 at 14:48 -0200, Marcelo Tosatti wrote: > > On Thu, Jan 19, 2006 at 09:49:16AM +0000, Alan Cox wrote: > > > > > > f = open("/dev/watchdog", O_RDWR); > > > fork(); > > > while(1) { > > > write(f, "Boing", 5); > > > } > > > > Oops. > > > > At least 50% of the watchdog drivers rely solely on the "wdt_is_open" > > atomic variable and are broken with respect to synchronization. > > What an excellent janitors project I'll have a look at it from a global point of view. Greetings, Wim. - 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/