Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751381AbaAOGSD (ORCPT ); Wed, 15 Jan 2014 01:18:03 -0500 Received: from mail-ie0-f171.google.com ([209.85.223.171]:41743 "EHLO mail-ie0-f171.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750784AbaAOGR7 (ORCPT ); Wed, 15 Jan 2014 01:17:59 -0500 Message-ID: <52D62814.2000401@gmail.com> Date: Wed, 15 Jan 2014 00:17:56 -0600 From: Robert Hancock User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: "Rafael J. Wysocki" , Matthew Garrett , Lan Tianyu CC: Dmitry Torokhov , lenb@kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, fcr@adinet.com.uy, l@dorileo.org Subject: Re: [PATCH V2] ACPI/Battery: Add a _BIX quirk for NEC LZ750/LS References: <1389019837-13619-1-git-send-email-tianyu.lan@intel.com> <1793775.ULjNzyMivD@vostro.rjw.lan> <20140114160601.GB4307@srcf.ucam.org> <5255063.SeYbBZqxVQ@vostro.rjw.lan> In-Reply-To: <5255063.SeYbBZqxVQ@vostro.rjw.lan> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/14/2014 03:37 PM, Rafael J. Wysocki wrote: > On Tuesday, January 14, 2014 04:06:01 PM Matthew Garrett wrote: >> On Mon, Jan 06, 2014 at 11:25:53PM +0100, Rafael J. Wysocki wrote: >> >>> Queued up as a fix for 3.13 (I fixed up the indentation). >> >> Ah, sorry, I missed this chunk of the thread. If the system provides >> valid _BIF data then we should possibly just fall back to that rather >> than adding another quirk table. > > The problem is to know that _BIX is broken. If we could figure that out > upfront, we woulnd't need the quirk table in any case. > > Tianyu, can we do some effort during the driver initialization to detect > this breakage and handle it without blacklisting systems? Yes, the usual question in such cases is "how does Windows manage to function on such systems, (almost certainly) without a system-specific hack, and can we replicate that behavior?" -- 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/