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=-14.2 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_SANE_1 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 31080C11F6D for ; Tue, 6 Jul 2021 12:20:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1D9CA61464 for ; Tue, 6 Jul 2021 12:20:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232381AbhGFMWU (ORCPT ); Tue, 6 Jul 2021 08:22:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52398 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243274AbhGFMDZ (ORCPT ); Tue, 6 Jul 2021 08:03:25 -0400 Received: from mail-ed1-x52f.google.com (mail-ed1-x52f.google.com [IPv6:2a00:1450:4864:20::52f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 250ABC0613AC; Tue, 6 Jul 2021 04:42:37 -0700 (PDT) Received: by mail-ed1-x52f.google.com with SMTP id j11so27557227edq.6; Tue, 06 Jul 2021 04:42:37 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=CDGtQ2yb8IShQ7cIRYFiJmp1Uu5BANeA/6Jg/xILJy0=; b=TwRJy6+J3urIn/EOHkX70XQHrPpIXFIOoiquz6eJSwyU/SQIQ4dADKORnRQAYcVLDd bGmCH+O3vZ/zwAN03+xnrlCOWn/T/Pz6KfPYlHzOgGXWb72eEAEAjVLMxY3sV52LOQiu 4sMepvP8f2M/NuGTEEUpcS9djTSXyNUocbOOHuCxDZ/swc4Yj2krBjOK18+xBOWwYw7y O/LcWjnu0kdZ4pmyv7jFfFo0qSdeTOdmtP2CciCXwcdnQ5FYkYueWY1vZLSQqxLbXVdx xHWyXJmiVDLrlTvE9QGQSNArUJUGdY04ySHX3mfxNurDFI1sFLhNw1IKyh/ZzycJEC6f piBA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=CDGtQ2yb8IShQ7cIRYFiJmp1Uu5BANeA/6Jg/xILJy0=; b=cSIW3JOIioAioIfgYKQyQqSazD73CO2PhkvK0JpGSXcRxwlVCIhPlMy2RNwRC1MezP BZ6h7/kkDgQ3vWimxPSP4mzUaGDt3EzWppD0JS17YAmF+WeMh8uX+T8RGBLrP1yn9PRd 7eiSxAMicNAC7ITetPISq3ES+JtI8d2MqrQXZ9OrUMbvPlFwZGfhN0arPSs6IUkqCOcX 7/5i+a2zAxbp3eKkAsq1+S0YeP3DdunBCJ7tBY5HrLzTvvsMNevnmiKoKYvViPuTMssR 3sCbpDUd/WDNCgYKdsmah+f8KbMhn4fyLfNLhWiuKnOWvf1HIIgc7XRx6t2Flm9df9IF dO8A== X-Gm-Message-State: AOAM531si/HgMyvSBgLiARPQKINfzHpo1CAX05lwHmmBW914p2HvS2Mz xYqcLlPqWc3xfYVAzVqH/8c= X-Google-Smtp-Source: ABdhPJwOR9RYbuFI1V8zYqZEcawlLdGKboqfR9DJ6TrIpurxtzPOHwaABH2lGpOOBvACTZh8ZOEU1A== X-Received: by 2002:a05:6402:1c06:: with SMTP id ck6mr22330893edb.287.1625571755735; Tue, 06 Jul 2021 04:42:35 -0700 (PDT) Received: from [192.168.2.202] (pd9e5a48a.dip0.t-ipconnect.de. [217.229.164.138]) by smtp.gmail.com with ESMTPSA id eb9sm5646083ejc.32.2021.07.06.04.42.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 06 Jul 2021 04:42:35 -0700 (PDT) Subject: Re: [PATCH] bus: Make remove callback return void To: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Maxime Ripard , Jiri Kosina , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Johannes Thumshirn , Mauro Carvalho Chehab , Arnd Bergmann , Jakub Kicinski , "David S. Miller" , =?UTF-8?Q?Krzysztof_Wilczy=c5=84ski?= , Bjorn Helgaas , Hans de Goede , Mark Gross , Bjorn Andersson , Andy Gross , Mark Brown , Stephen Boyd , Johan Hovold , Alex Elder , Mika Westerberg , Rob Herring , Jiri Slaby , Stefano Stabellini , =?UTF-8?Q?Pali_Roh=c3=a1r?= , Adrian Hunter , linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-wireless@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev, dmaengine@vger.kernel.org, linux1394-devel@lists.sourceforge.net, linux-fpga@vger.kernel.org, linux-input@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-i2c@vger.kernel.org, linux-i3c@lists.infradead.org, industrypack-devel@lists.sourceforge.net, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-ntb@googlegroups.com, linux-pci@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-scsi@vger.kernel.org, alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org, linux-staging@lists.linux.dev, greybus-dev@lists.linaro.org, target-devel@vger.kernel.org, linux-usb@vger.kernel.org, linux-serial@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org References: <20210706095037.1425211-1-u.kleine-koenig@pengutronix.de> From: Maximilian Luz Message-ID: <07c08230-6c71-2a73-c89f-05b9b5de78ab@gmail.com> Date: Tue, 6 Jul 2021 13:42:31 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210706095037.1425211-1-u.kleine-koenig@pengutronix.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 7/6/21 11:50 AM, 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. > > Signed-off-by: Uwe Kleine-König > drivers/platform/surface/aggregator/bus.c | 4 +--- Acked-by: Maximilian Luz 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=-12.5 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 0436DC07E96 for ; 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[217.229.164.138]) by smtp.gmail.com with ESMTPSA id eb9sm5646083ejc.32.2021.07.06.04.42.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 06 Jul 2021 04:42:35 -0700 (PDT) Subject: Re: [PATCH] bus: Make remove callback return void To: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Greg Kroah-Hartman References: <20210706095037.1425211-1-u.kleine-koenig@pengutronix.de> From: Maximilian Luz Message-ID: <07c08230-6c71-2a73-c89f-05b9b5de78ab@gmail.com> Date: Tue, 6 Jul 2021 13:42:31 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210706095037.1425211-1-u.kleine-koenig@pengutronix.de> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Thu, 08 Jul 2021 12:04:27 +0200 Cc: =?UTF-8?Q?Krzysztof_Wilczy=c5=84ski?= , linux-hyperv@vger.kernel.org, Alex Elder , kvm@vger.kernel.org, nvdimm@lists.linux.dev, linux-mmc@vger.kernel.org, linux-wireless@vger.kernel.org, linux-fpga@vger.kernel.org, linux-pci@vger.kernel.org, alsa-devel@alsa-project.org, linux-cxl@vger.kernel.org, Bjorn Andersson , target-devel@vger.kernel.org, linux-i2c@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-i3c@lists.infradead.org, "K. Y. Srinivasan" , Jiri Slaby , Rob Herring , Wei Liu , Stefano Stabellini , Stephen Hemminger , linux-scsi@vger.kernel.org, Adrian Hunter , linux-staging@lists.linux.dev, Dexuan Cui , linux-acpi@vger.kernel.org, Andy Gross , industrypack-devel@lists.sourceforge.net, linux-input@vger.kernel.org, Jakub Kicinski , linux-mips@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-sunxi@lists.linux.dev, Len Brown , platform-driver-x86@vger.kernel.org, linux-serial@vger.kernel.org, Arnd Bergmann , linux-remoteproc@vger.kernel.org, Haiyang Zhang , Jiri Kosina , Johan Hovold , Maxime Ripard , Hans de Goede , Mark Brown , xen-devel@lists.xenproject.org, Bjorn Helgaas , Mark Gross , Mauro Carvalho Chehab , Mika Westerberg , linux-arm-kernel@lists.infradead.org, linux1394-devel@lists.sourceforge.net, Johannes Thumshirn , linux-parisc@vger.kernel.org, greybus-dev@lists.linaro.org, Stephen Boyd , linuxppc-dev@lists.ozlabs.org, linux-usb@vger.kernel.org, "Rafael J. Wysocki" , linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, netdev@vger.kernel.org, dmaengine@vger.kernel.org, linux-ntb@googlegroups.com, linux-media@vger.kernel.org, =?UTF-8?Q?Pali_Roh=c3=a1r?= , "David S. Miller" X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" On 7/6/21 11:50 AM, 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. > > Signed-off-by: Uwe Kleine-König > drivers/platform/surface/aggregator/bus.c | 4 +--- Acked-by: Maximilian Luz 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=-12.4 required=3.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED,DKIM_SIGNED,DKIM_VALID,FREEMAIL_FORGED_FROMDOMAIN, FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 autolearn=ham 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 18AB6C432BE for ; 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[217.229.164.138]) by smtp.gmail.com with ESMTPSA id eb9sm5646083ejc.32.2021.07.06.04.42.32 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 06 Jul 2021 04:42:35 -0700 (PDT) Subject: Re: [PATCH] bus: Make remove callback return void To: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Greg Kroah-Hartman Cc: linux-kernel@vger.kernel.org, "Rafael J. Wysocki" , Len Brown , Maxime Ripard , Jiri Kosina , "K. Y. Srinivasan" , Haiyang Zhang , Stephen Hemminger , Wei Liu , Dexuan Cui , Johannes Thumshirn , Mauro Carvalho Chehab , Arnd Bergmann , Jakub Kicinski , "David S. Miller" , =?UTF-8?Q?Krzysztof_Wilczy=c5=84ski?= , Bjorn Helgaas , Hans de Goede , Mark Gross , Bjorn Andersson , Andy Gross , Mark Brown , Stephen Boyd , Johan Hovold , Alex Elder , Mika Westerberg , Rob Herring , Jiri Slaby , Stefano Stabellini , =?UTF-8?Q?Pali_Roh=c3=a1r?= , Adrian Hunter , linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-acpi@vger.kernel.org, linux-wireless@vger.kernel.org, linux-sunxi@lists.linux.dev, linux-cxl@vger.kernel.org, nvdimm@lists.linux.dev, dmaengine@vger.kernel.org, linux1394-devel@lists.sourceforge.net, linux-fpga@vger.kernel.org, linux-input@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-i2c@vger.kernel.org, linux-i3c@lists.infradead.org, industrypack-devel@lists.sourceforge.net, linux-media@vger.kernel.org, linux-mmc@vger.kernel.org, netdev@vger.kernel.org, linux-ntb@googlegroups.com, linux-pci@vger.kernel.org, platform-driver-x86@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-scsi@vger.kernel.org, alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org, linux-staging@lists.linux.dev, greybus-dev@lists.linaro.org, target-devel@vger.kernel.org, linux-usb@vger.kernel.org, linux-serial@vger.kernel.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org References: <20210706095037.1425211-1-u.kleine-koenig@pengutronix.de> From: Maximilian Luz Message-ID: <07c08230-6c71-2a73-c89f-05b9b5de78ab@gmail.com> Date: Tue, 6 Jul 2021 13:42:31 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20210706095037.1425211-1-u.kleine-koenig@pengutronix.de> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210706_044238_427571_50E2C1A2 X-CRM114-Status: GOOD ( 18.19 ) X-Mailman-Approved-At: Fri, 30 Jul 2021 12:40:20 -0700 X-BeenThere: linux-i3c@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: base64 Content-Type: text/plain; charset="utf-8"; Format="flowed" Sender: "linux-i3c" Errors-To: linux-i3c-bounces+linux-i3c=archiver.kernel.org@lists.infradead.org T24gNy82LzIxIDExOjUwIEFNLCBVd2UgS2xlaW5lLUvDtm5pZyB3cm90ZToKPiBUaGUgZHJpdmVy IGNvcmUgaWdub3JlcyB0aGUgcmV0dXJuIHZhbHVlIG9mIHRoaXMgY2FsbGJhY2sgYmVjYXVzZSB0 aGVyZQo+IGlzIG9ubHkgbGl0dGxlIGl0IGNhbiBkbyB3aGVuIGEgZGV2aWNlIGRpc2FwcGVhcnMu Cj4gCj4gVGhpcyBpcyB0aGUgZmluYWwgYml0IG9mIGEgbG9uZyBsYXN0aW5nIGNsZWFudXAgcXVl c3Qgd2hlcmUgc2V2ZXJhbAo+IGJ1c2VzIHdlcmUgY29udmVydGVkIHRvIGFsc28gcmV0dXJuIHZv aWQgZnJvbSB0aGVpciByZW1vdmUgY2FsbGJhY2suCj4gQWRkaXRpb25hbGx5IHNvbWUgcmVzb3Vy Y2UgbGVha3Mgd2VyZSBmaXhlZCB0aGF0IHdlcmUgY2F1c2VkIGJ5IGRyaXZlcnMKPiByZXR1cm5p bmcgYW4gZXJyb3IgY29kZSBpbiB0aGUgZXhwZWN0YXRpb24gdGhhdCB0aGUgZHJpdmVyIHdvbid0 IGdvCj4gYXdheS4KPiAKPiBXaXRoIHN0cnVjdCBidXNfdHlwZTo6cmVtb3ZlIHJldHVybmluZyB2 b2lkIGl0J3MgcHJldmVudGVkIHRoYXQgbmV3bHkKPiBpbXBsZW1lbnRlZCBidXNlcyByZXR1cm4g YW4gaWdub3JlZCBlcnJvciBjb2RlIGFuZCBzbyBkb24ndCBhbnRpY2lwYXRlCj4gd3JvbmcgZXhw ZWN0YXRpb25zIGZvciBkcml2ZXIgYXV0aG9ycy4KPiAKPiBTaWduZWQtb2ZmLWJ5OiBVd2UgS2xl aW5lLUvDtm5pZyA8dS5rbGVpbmUta29lbmlnQHBlbmd1dHJvbml4LmRlPgoKPiAgIGRyaXZlcnMv cGxhdGZvcm0vc3VyZmFjZS9hZ2dyZWdhdG9yL2J1cy5jIHwgNCArLS0tCgpBY2tlZC1ieTogTWF4 aW1pbGlhbiBMdXogPGx1em1heGltaWxpYW5AZ21haWwuY29tPgoKLS0gCmxpbnV4LWkzYyBtYWls aW5nIGxpc3QKbGludXgtaTNjQGxpc3RzLmluZnJhZGVhZC5vcmcKaHR0cDovL2xpc3RzLmluZnJh ZGVhZC5vcmcvbWFpbG1hbi9saXN0aW5mby9saW51eC1pM2MK