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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 08FC5C11F6C for ; Tue, 6 Jul 2021 18:08:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E696361C5B for ; Tue, 6 Jul 2021 18:08:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231220AbhGFSLG (ORCPT ); Tue, 6 Jul 2021 14:11:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52936 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231209AbhGFSLD (ORCPT ); Tue, 6 Jul 2021 14:11:03 -0400 Received: from mail-ot1-x334.google.com (mail-ot1-x334.google.com [IPv6:2607:f8b0:4864:20::334]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 20A87C061767 for ; Tue, 6 Jul 2021 11:08:23 -0700 (PDT) Received: by mail-ot1-x334.google.com with SMTP id 75-20020a9d08510000b02904acfe6bcccaso2373315oty.12 for ; Tue, 06 Jul 2021 11:08:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=rFh4HQBpaw9ewOD7eKuJ7KI9YAzHhN8tlxJ6LopMKHs=; b=Sz6rE6fIxKghlltcLCE+UXPsQefAUgPvTMscjeRzq2kl6NTGV49umux5xM0XcDuF3f KuSKKfkZ8nSISGEXHz3w1v+CP9bxuRJkim+LBmkXAMBhskBSVWy4R8UYC7L1pwY+g7hz Zg3WKG3mRVhsusU5VFmdXh5UPocqhZf4lahEU95r9tDGNbsVfHF1Q4HkA+YZfm/i81fd v0xNi9dJEaEvf856OdG6fjSc31APYItT+IUiPzbg0w9QbfcYoXqLRo58SwLlUHuXr/Qb gjgu5RAVRwk/bKL57rYJjqGIxVt7qPeDusZUEamQ36NdV7/ZYwdc/uo7wSJkJLcpf0tD jOXA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=rFh4HQBpaw9ewOD7eKuJ7KI9YAzHhN8tlxJ6LopMKHs=; b=JJNXw+Uk/x2C0xH4jD5DlV1zD6tN7xh9vkN/Pc4DBxIuBY3zX156FuGSaxnnJYjVoj pyAdLM5xcvOnIN0DHWn94dn6Ik+KLHwwNUGze3qoLHnZqQqyVnqX7z2ss+LNMgP8bbec zyPwzD5IdTnhdZz+X0uvEPutl74Mc+5ZaGs/khjiIaDb5dXKyaMG5Tss5BmE9s9IbcZG uekhe+ffjZEaIpaHCN6RE14I40PYqBh9lUfRNKvvz9GeYt8RYACysAk1HBgKfYOjAnKz tzHFo4Qp3kSjpcwFYt/l8C6mCeEbOIbHqEYmdZVX+Gj5Ks9sqYysi6AjCJmVysLM8++v bDcg== X-Gm-Message-State: AOAM5313zqDrI1m3wEdugl4LXTwc4sknIIWWjZBylj+pb9BDW1Rli8YS K4ZydACnYXBik9lT7hw66ZhBPw== X-Google-Smtp-Source: ABdhPJwwC8pa+wbm0v5SSaX+DFJoQ7jJmXTjdD3iH0933Y2rw8Y2+zYlxp2w0qjcBNkHXGnjSvRJ6w== X-Received: by 2002:a9d:3d3:: with SMTP id f77mr16276146otf.43.1625594902170; Tue, 06 Jul 2021 11:08:22 -0700 (PDT) Received: from yoga (104-57-184-186.lightspeed.austtx.sbcglobal.net. [104.57.184.186]) by smtp.gmail.com with ESMTPSA id 68sm497113otd.74.2021.07.06.11.08.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Jul 2021 11:08:21 -0700 (PDT) Date: Tue, 6 Jul 2021 13:08:18 -0500 From: Bjorn Andersson To: Uwe Kleine-K?nig Cc: kernel@pengutronix.de, 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 Subject: Re: [PATCH v2 4/4] bus: Make remove callback return void Message-ID: References: <20210706154803.1631813-1-u.kleine-koenig@pengutronix.de> <20210706154803.1631813-5-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210706154803.1631813-5-u.kleine-koenig@pengutronix.de> Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org On Tue 06 Jul 10:48 CDT 2021, Uwe Kleine-K?nig 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. > Thanks for doing this! Acked-by: Bjorn Andersson (rpmsg and apr) [..] > diff --git a/drivers/rpmsg/rpmsg_core.c b/drivers/rpmsg/rpmsg_core.c > index c1404d3dae2c..7f6fac618ab2 100644 > --- a/drivers/rpmsg/rpmsg_core.c > +++ b/drivers/rpmsg/rpmsg_core.c > @@ -530,7 +530,7 @@ static int rpmsg_dev_probe(struct device *dev) > return err; > } > > -static int rpmsg_dev_remove(struct device *dev) > +static void rpmsg_dev_remove(struct device *dev) > { > struct rpmsg_device *rpdev = to_rpmsg_device(dev); > struct rpmsg_driver *rpdrv = to_rpmsg_driver(rpdev->dev.driver); > @@ -546,8 +546,6 @@ static int rpmsg_dev_remove(struct device *dev) > > if (rpdev->ept) > rpmsg_destroy_ept(rpdev->ept); > - > - return err; This leaves err assigned but never used, but I don't mind following up with a patch cleaning that up after this has landed. > } > > static struct bus_type rpmsg_bus = { Regards, Bjorn