From patchwork Tue Sep 19 17:49:26 2023 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: 13391712 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2248BCE79AF for ; Tue, 19 Sep 2023 17:50:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232808AbjISRuV (ORCPT ); Tue, 19 Sep 2023 13:50:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34270 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232845AbjISRuR (ORCPT ); Tue, 19 Sep 2023 13:50:17 -0400 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [IPv6:2a0a:edc0:2:b01:1d::104]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A0A27132 for ; Tue, 19 Sep 2023 10:50:10 -0700 (PDT) Received: from drehscheibe.grey.stw.pengutronix.de ([2a0a:edc0:0:c01:1d::a2]) by metis.whiteo.stw.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1qierH-0006xO-9M; Tue, 19 Sep 2023 19:49:59 +0200 Received: from [2a0a:edc0:0:900:1d::77] (helo=ptz.office.stw.pengutronix.de) by drehscheibe.grey.stw.pengutronix.de with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1qierF-007VYG-Vw; Tue, 19 Sep 2023 19:49:58 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qierF-0034ZL-Mx; Tue, 19 Sep 2023 19:49:57 +0200 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Jonathan Cameron Cc: Jiri Kosina , Srinivas Pandruvada , Lars-Peter Clausen , linux-input@vger.kernel.org, linux-iio@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 44/49] iio: pressure: hid-sensor: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 19:49:26 +0200 Message-Id: <20230919174931.1417681-45-u.kleine-koenig@pengutronix.de> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230919174931.1417681-1-u.kleine-koenig@pengutronix.de> References: <20230919174931.1417681-1-u.kleine-koenig@pengutronix.de> MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2107; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=LsDjAC9CMb28Jv+rsMoc5esLJvlCpdT8PpLZI8ZCSlU=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCd8h6hX+PVwoXP+ENdcJWVmKx8yOrY/eXDU6b wpAt/lHqDWJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQnfIQAKCRCPgPtYfRL+ TugvCACgMMtpdS2SROpZLFCcxBonK7xSrxpZ6GuibN+gwD+xFvJ18o3N047LaelTRNC/w7htVE7 BxMUEeSvuE7QDEx+EfHjQTxQ3HOm8JcpQWi9z24gqHQjo6Lq4EangwMpc/ax5tPlqbVz/aV/Lxm 6e0yKNOaUtY5UyCRN8A1elqo2Ksu9zbs3RNarc5gjfRys/d9yCMMZbs0XzC9hVbnAE+IePCTgVj gVEx5vOiQfDevOnXlFE0Kon0K2woiaZ7RalyCch6FUlHZUGcVFC6IGzsgc02b41zTItj9QY+v8S UPClIgKYYJ30wNhyjPcMEE0zNsgmus3lhtj4kYYlPUh/q5+1 X-Developer-Key: i=u.kleine-koenig@pengutronix.de; a=openpgp; fpr=0D2511F322BFAB1C1580266BE2DCDD9132669BD6 X-SA-Exim-Connect-IP: 2a0a:edc0:0:c01:1d::a2 X-SA-Exim-Mail-From: ukl@pengutronix.de X-SA-Exim-Scanned: No (on metis.whiteo.stw.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-input@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org The .remove() callback for a platform driver returns an int which makes many driver authors wrongly assume it's possible to do error handling by returning an error code. However the value returned is ignored (apart from emitting a warning) and this typically results in resource leaks. To improve here there is a quest to make the remove callback return void. In the first step of this quest all drivers are converted to .remove_new() which already returns void. Eventually after all drivers are converted, .remove_new() will be renamed to .remove(). Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König --- drivers/iio/pressure/hid-sensor-press.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c index a9215eb32d70..956045e2db29 100644 --- a/drivers/iio/pressure/hid-sensor-press.c +++ b/drivers/iio/pressure/hid-sensor-press.c @@ -323,7 +323,7 @@ static int hid_press_probe(struct platform_device *pdev) } /* Function to deinitialize the processing for usage id */ -static int hid_press_remove(struct platform_device *pdev) +static void hid_press_remove(struct platform_device *pdev) { struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; struct iio_dev *indio_dev = platform_get_drvdata(pdev); @@ -332,8 +332,6 @@ static int hid_press_remove(struct platform_device *pdev) sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PRESSURE); iio_device_unregister(indio_dev); hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes); - - return 0; } static const struct platform_device_id hid_press_ids[] = { @@ -352,7 +350,7 @@ static struct platform_driver hid_press_platform_driver = { .pm = &hid_sensor_pm_ops, }, .probe = hid_press_probe, - .remove = hid_press_remove, + .remove_new = hid_press_remove, }; module_platform_driver(hid_press_platform_driver);