Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754791AbZLSXqO (ORCPT ); Sat, 19 Dec 2009 18:46:14 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754270AbZLSXqN (ORCPT ); Sat, 19 Dec 2009 18:46:13 -0500 Received: from smtp1.linux-foundation.org ([140.211.169.13]:51725 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754072AbZLSXqM (ORCPT ); Sat, 19 Dec 2009 18:46:12 -0500 Date: Sat, 19 Dec 2009 15:46:04 -0800 (PST) From: Linus Torvalds X-X-Sender: torvalds@localhost.localdomain To: "Rafael J. Wysocki" cc: Dmitry Torokhov , Alan Stern , Zhang Rui , LKML , ACPI Devel Maling List , pm list Subject: Re: Async suspend-resume patch w/ completions (was: Re: Async suspend-resume patch w/ rwsems) In-Reply-To: <200912200040.18944.rjw@sisk.pl> Message-ID: References: <200912200010.19899.rjw@sisk.pl> <200912200040.18944.rjw@sisk.pl> User-Agent: Alpine 2.00 (LFD 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1049 Lines: 28 On Sun, 20 Dec 2009, Rafael J. Wysocki wrote: > > OK, so this means we can just forget about suspending/resuming i8042 > asynchronously, which is a pity, because that gave us some real suspend > speedup on my test systems. No. What it means is that you shouldn't try to come up with these idiotic scenarios just trying to make trouble for yourself, and using it as an excuse for crap. I suggest you try to treat the i8042 controller async, and see if it is problematic. If it isn't, don't do that then. But we actually have no real reason to believe that it would be problematic, at least on a PC where the actual logic is on the SB (presumably behind the LPC controller). Why would it be? The fact that PnP and ACPI enumerates those devices has exactly _what_ to do with anything? Linus -- 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/