From patchwork Thu Nov 26 11:47:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= X-Patchwork-Id: 11933359 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=-16.7 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=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 BE3C1C63777 for ; Thu, 26 Nov 2020 11:47:38 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7E79920678 for ; Thu, 26 Nov 2020 11:47:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733184AbgKZLri (ORCPT ); Thu, 26 Nov 2020 06:47:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40806 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732649AbgKZLrh (ORCPT ); Thu, 26 Nov 2020 06:47:37 -0500 Received: from metis.ext.pengutronix.de (metis.ext.pengutronix.de [IPv6:2001:67c:670:201:290:27ff:fe1d:cc33]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7CEAAC0613D4 for ; Thu, 26 Nov 2020 03:47:37 -0800 (PST) Received: from pty.hi.pengutronix.de ([2001:67c:670:100:1d::c5]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kiFkH-0006J0-W7; Thu, 26 Nov 2020 12:47:30 +0100 Received: from ukl by pty.hi.pengutronix.de with local (Exim 4.89) (envelope-from ) id 1kiFkG-0006wX-Pq; Thu, 26 Nov 2020 12:47:28 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Russell King , Dmitry Torokhov , Dominik Brodowski , Alan Stern , Greg Kroah-Hartman Cc: linux-arm-kernel@lists.infradead.org, linux-input@vger.kernel.org, linux-usb@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH] ARM: sa11111: make sa1111 bus's remove callback return void Date: Thu, 26 Nov 2020 12:47:24 +0100 Message-Id: <20201126114724.2028511-1-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::c5 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-usb@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org The driver core ignores the return value of struct device_driver::remove because there is only little that can be done. To simplify the quest to make this function return void, let struct sa1111_driver::remove return void, too. All users already unconditionally return 0, this commit makes it obvious that returning an error code is a bad idea and ensures future users behave accordingly. Signed-off-by: Uwe Kleine-König Acked-by: Dmitry Torokhov Reviewed-by: Greg Kroah-Hartman --- arch/arm/common/sa1111.c | 6 +++--- arch/arm/include/asm/hardware/sa1111.h | 2 +- drivers/input/serio/sa1111ps2.c | 4 +--- drivers/pcmcia/sa1111_generic.c | 3 +-- drivers/usb/host/ohci-sa1111.c | 4 +--- 5 files changed, 7 insertions(+), 12 deletions(-) diff --git a/arch/arm/common/sa1111.c b/arch/arm/common/sa1111.c index f89c1ea327a2..ff5e0d04cb89 100644 --- a/arch/arm/common/sa1111.c +++ b/arch/arm/common/sa1111.c @@ -1368,11 +1368,11 @@ static int sa1111_bus_remove(struct device *dev) { struct sa1111_dev *sadev = to_sa1111_device(dev); struct sa1111_driver *drv = SA1111_DRV(dev->driver); - int ret = 0; if (drv->remove) - ret = drv->remove(sadev); - return ret; + drv->remove(sadev); + + return 0; } struct bus_type sa1111_bus_type = { diff --git a/arch/arm/include/asm/hardware/sa1111.h b/arch/arm/include/asm/hardware/sa1111.h index d134b9a5ff94..2e70db6f22ea 100644 --- a/arch/arm/include/asm/hardware/sa1111.h +++ b/arch/arm/include/asm/hardware/sa1111.h @@ -403,7 +403,7 @@ struct sa1111_driver { struct device_driver drv; unsigned int devid; int (*probe)(struct sa1111_dev *); - int (*remove)(struct sa1111_dev *); + void (*remove)(struct sa1111_dev *); }; #define SA1111_DRV(_d) container_of((_d), struct sa1111_driver, drv) diff --git a/drivers/input/serio/sa1111ps2.c b/drivers/input/serio/sa1111ps2.c index 7b8ceb702a74..68fac4801e2e 100644 --- a/drivers/input/serio/sa1111ps2.c +++ b/drivers/input/serio/sa1111ps2.c @@ -344,7 +344,7 @@ static int ps2_probe(struct sa1111_dev *dev) /* * Remove one device from this driver. */ -static int ps2_remove(struct sa1111_dev *dev) +static void ps2_remove(struct sa1111_dev *dev) { struct ps2if *ps2if = sa1111_get_drvdata(dev); @@ -353,8 +353,6 @@ static int ps2_remove(struct sa1111_dev *dev) sa1111_set_drvdata(dev, NULL); kfree(ps2if); - - return 0; } /* diff --git a/drivers/pcmcia/sa1111_generic.c b/drivers/pcmcia/sa1111_generic.c index 11783410223b..29fdd174bc23 100644 --- a/drivers/pcmcia/sa1111_generic.c +++ b/drivers/pcmcia/sa1111_generic.c @@ -238,7 +238,7 @@ static int pcmcia_probe(struct sa1111_dev *dev) return ret; } -static int pcmcia_remove(struct sa1111_dev *dev) +static void pcmcia_remove(struct sa1111_dev *dev) { struct sa1111_pcmcia_socket *next, *s = dev_get_drvdata(&dev->dev); @@ -252,7 +252,6 @@ static int pcmcia_remove(struct sa1111_dev *dev) release_mem_region(dev->res.start, 512); sa1111_disable_device(dev); - return 0; } static struct sa1111_driver pcmcia_driver = { diff --git a/drivers/usb/host/ohci-sa1111.c b/drivers/usb/host/ohci-sa1111.c index 8e19a5eb5b62..feca826d3f6a 100644 --- a/drivers/usb/host/ohci-sa1111.c +++ b/drivers/usb/host/ohci-sa1111.c @@ -236,7 +236,7 @@ static int ohci_hcd_sa1111_probe(struct sa1111_dev *dev) * Reverses the effect of ohci_hcd_sa1111_probe(), first invoking * the HCD's stop() method. */ -static int ohci_hcd_sa1111_remove(struct sa1111_dev *dev) +static void ohci_hcd_sa1111_remove(struct sa1111_dev *dev) { struct usb_hcd *hcd = sa1111_get_drvdata(dev); @@ -244,8 +244,6 @@ static int ohci_hcd_sa1111_remove(struct sa1111_dev *dev) sa1111_stop_hc(dev); release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); - - return 0; } static void ohci_hcd_sa1111_shutdown(struct device *_dev)