From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753128AbdGJFcX (ORCPT ); Mon, 10 Jul 2017 01:32:23 -0400 Received: from mail-he1eur01on0102.outbound.protection.outlook.com ([104.47.0.102]:59462 "EHLO EUR01-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751118AbdGJFcV (ORCPT ); Mon, 10 Jul 2017 01:32:21 -0400 Authentication-Results: vger.kernel.org; dkim=none (message not signed) header.d=none;vger.kernel.org; dmarc=none action=none header.from=axentia.se; Subject: Re: [PATCH v1 1/1] mux: consumer: Add dummy functions for !CONFIG_MULTIPLEXER case To: "Kuppuswamy, Sathyanarayanan" , sathyanarayanan.kuppuswamy@linux.intel.com Cc: linux-kernel@vger.kernel.org References: <1bd098de-312e-d75e-0089-93848c12481c@gmail.com> From: Peter Rosin Organization: Axentia Technologies AB Message-ID: Date: Mon, 10 Jul 2017 07:32:13 +0200 User-Agent: Mozilla/5.0 (Windows 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X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR0202MB2554 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2017-07-09 01:04, Kuppuswamy, Sathyanarayanan wrote: > Hi Peter, > > On 7/8/2017 1:55 PM, Peter Rosin wrote: >> On 2017-07-07 23:41, sathyanarayanan.kuppuswamy@linux.intel.com wrote: >>> From: Kuppuswamy Sathyanarayanan >>> >>> Add dummy functions to avoid compile time issues when CONFIG_MULTIPLEXER >>> is not enabled. >> Hi! >> >> Consumers should "select MULTIPLEXER", > If their driver can't work without mux_* calls then you can make it > compulsory. But its not always true. >> so this does not make sense. >> Or do you have a driver that has an optional mux consumer? > I came across this case when I was working on Intel USB MUX driver. I > think you know the history behind it. Although I am not planning to > merge that driver now, but I think the use case is still valid. Yeah, it's a valid use case. But why add a facility that noone uses? Sure, if there's an actual consumer that needs it. But there isn't... See, I have spent considerable time taking stuff like this out in order to get the thing merged at all. I even think I wrote dummy inlines like this at some point (but I'm not sure if I actually wrote them and I don't think I submitted them. But I did think about it, that's for sure). Anyway, I'm not very happy about ballooning the core with support for non-essentials just yet. Maybe my mind-set will change over time? (And no, I don't *know* the history behind the "Intel USB MUX driver", I e.g. never saw the consumer code. And I have the feeling that stuff were discussed in other threads that I was not part of and some (most?) questions I asked about it was left unanswered.) Cheers, peda