From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09282C11F75 for ; Wed, 14 Jul 2021 10:27:09 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id DF21E613B9 for ; Wed, 14 Jul 2021 10:27:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237998AbhGNK36 (ORCPT ); Wed, 14 Jul 2021 06:29:58 -0400 Received: from foss.arm.com ([217.140.110.172]:32922 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230270AbhGNK3w (ORCPT ); Wed, 14 Jul 2021 06:29:52 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 354A311D4; Wed, 14 Jul 2021 03:27:00 -0700 (PDT) Received: from bogus (unknown [10.57.79.213]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 2FF633F774; Wed, 14 Jul 2021 03:26:27 -0700 (PDT) Date: Wed, 14 Jul 2021 11:25:29 +0100 From: Sudeep Holla To: Uwe =?utf-8?Q?Kleine-K=C3=B6nig?= Cc: Greg Kroah-Hartman , kernel@pengutronix.de, Sudeep Holla , Alexander Shishkin , Alexandre Belloni , Alexandre Bounine , Alex Dubov , Alex Elder , Alex Williamson , Alison Schofield , Allen Hubbe , Andreas Noever , Andy Gross , Arnd Bergmann , Benjamin Herrenschmidt , Benjamin Tissoires , Ben Widawsky , Bjorn Andersson , Bjorn Helgaas , Bodo Stroesser , Boris Ostrovsky , Chen-Yu Tsai , Christian Borntraeger , Cornelia Huck , Cristian Marussi , Dan Williams , Dave Jiang , "David S. 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Wysocki" Subject: Re: [PATCH v4 5/5] bus: Make remove callback return void Message-ID: <20210714102529.ehwquc2s2qlbccyg@bogus> References: <20210713193522.1770306-1-u.kleine-koenig@pengutronix.de> <20210713193522.1770306-6-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20210713193522.1770306-6-u.kleine-koenig@pengutronix.de> Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org On Tue, Jul 13, 2021 at 09:35:22PM +0200, Uwe Kleine-König wrote: > The driver core ignores the return value of this callback because there > is only little it can do when a device disappears. > > This is the final bit of a long lasting cleanup quest where several > buses were converted to also return void from their remove callback. > Additionally some resource leaks were fixed that were caused by drivers > returning an error code in the expectation that the driver won't go > away. > > With struct bus_type::remove returning void it's prevented that newly > implemented buses return an ignored error code and so don't anticipate > wrong expectations for driver authors. > [...] > diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c > index 784cf0027da3..2682c3df651c 100644 > --- a/drivers/firmware/arm_scmi/bus.c > +++ b/drivers/firmware/arm_scmi/bus.c > @@ -116,15 +116,13 @@ static int scmi_dev_probe(struct device *dev) > return scmi_drv->probe(scmi_dev); > } > > -static int scmi_dev_remove(struct device *dev) > +static void scmi_dev_remove(struct device *dev) > { > struct scmi_driver *scmi_drv = to_scmi_driver(dev->driver); > struct scmi_device *scmi_dev = to_scmi_dev(dev); > > if (scmi_drv->remove) > scmi_drv->remove(scmi_dev); > - > - return 0; > } > > static struct bus_type scmi_bus_type = { Acked-by: Sudeep Holla -- Regards, Sudeep