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=-16.8 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,USER_AGENT_GIT 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 F0538C07E96 for ; Tue, 6 Jul 2021 15:52:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D189361C1C for ; Tue, 6 Jul 2021 15:52:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232690AbhGFPzZ (ORCPT ); Tue, 6 Jul 2021 11:55:25 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:38095 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232458AbhGFPzX (ORCPT ); Tue, 6 Jul 2021 11:55:23 -0400 Received: from ptx.hi.pengutronix.de ([2001:67c:670:100:1d::c0]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m0nL8-0007mS-BC; Tue, 06 Jul 2021 17:50:26 +0200 Received: from ukl by ptx.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1m0nL6-0005Ss-Hp; Tue, 06 Jul 2021 17:50:24 +0200 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= To: Greg Kroah-Hartman Cc: kernel@pengutronix.de, Cornelia Huck , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Vineeth Vijayan , Peter Oberparleiter , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 3/4] s390/scm: Make struct scm_driver::remove return void Date: Tue, 6 Jul 2021 17:48:02 +0200 Message-Id: <20210706154803.1631813-4-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210706154803.1631813-1-u.kleine-koenig@pengutronix.de> References: <20210706154803.1631813-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::c0 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-kernel@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The driver core ignores the return value of scmdev_remove() (because there is only little it can do when a device disappears). So make it impossible for future drivers to return an unused error code by changing the remove prototype to return void. The real motivation for this change is the quest to make struct bus_type::remove return void, too. Signed-off-by: Uwe Kleine-König --- arch/s390/include/asm/eadm.h | 2 +- drivers/s390/block/scm_drv.c | 4 +--- drivers/s390/cio/scm.c | 5 ++++- 3 files changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/s390/include/asm/eadm.h b/arch/s390/include/asm/eadm.h index bb63b2afdf6f..445fe4c8184a 100644 --- a/arch/s390/include/asm/eadm.h +++ b/arch/s390/include/asm/eadm.h @@ -105,7 +105,7 @@ enum scm_event {SCM_CHANGE, SCM_AVAIL}; struct scm_driver { struct device_driver drv; int (*probe) (struct scm_device *scmdev); - int (*remove) (struct scm_device *scmdev); + void (*remove) (struct scm_device *scmdev); void (*notify) (struct scm_device *scmdev, enum scm_event event); void (*handler) (struct scm_device *scmdev, void *data, blk_status_t error); diff --git a/drivers/s390/block/scm_drv.c b/drivers/s390/block/scm_drv.c index 3134fd6e058e..69a845eb8b1f 100644 --- a/drivers/s390/block/scm_drv.c +++ b/drivers/s390/block/scm_drv.c @@ -60,15 +60,13 @@ static int scm_probe(struct scm_device *scmdev) return ret; } -static int scm_remove(struct scm_device *scmdev) +static void scm_remove(struct scm_device *scmdev) { struct scm_blk_dev *bdev = dev_get_drvdata(&scmdev->dev); scm_blk_dev_cleanup(bdev); dev_set_drvdata(&scmdev->dev, NULL); kfree(bdev); - - return 0; } static struct scm_driver scm_drv = { diff --git a/drivers/s390/cio/scm.c b/drivers/s390/cio/scm.c index 9f26d4310bb3..b31711307e5a 100644 --- a/drivers/s390/cio/scm.c +++ b/drivers/s390/cio/scm.c @@ -33,7 +33,10 @@ static int scmdev_remove(struct device *dev) struct scm_device *scmdev = to_scm_dev(dev); struct scm_driver *scmdrv = to_scm_drv(dev->driver); - return scmdrv->remove ? scmdrv->remove(scmdev) : -ENODEV; + if (scmdrv->remove) + scmdrv->remove(scmdev); + + return 0; } static int scmdev_uevent(struct device *dev, struct kobj_uevent_env *env) -- 2.30.2