From patchwork Tue Sep 19 17:49:24 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: 13391710 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 E80A7CE79AB for ; Tue, 19 Sep 2023 17:50:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232758AbjISRuU (ORCPT ); Tue, 19 Sep 2023 13:50:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45272 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232594AbjISRuR (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 B6256123 for ; Tue, 19 Sep 2023 10:50:09 -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-0006w0-0T; 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-007VY9-JA; Tue, 19 Sep 2023 19:49:57 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qierF-0034ZD-8o; 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 42/49] iio: orientation: hid-sensor-rotation: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 19:49:24 +0200 Message-Id: <20230919174931.1417681-43-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=2146; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=M5KJaEC0r6hyiz93LrjvNIjI5lXA3JxdGcPMPplvUuM=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCd8eUstTMY0rI4t/ZTzfQ2pHreWhl9r1RkMeS NiuOCeQb4KJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQnfHgAKCRCPgPtYfRL+ TvFECAC5vtwC65OjcJLNu95zPyLrzX1yjaQhIeA6njY2pI8aoqE/cXPtuAiVdXzugFrUkwW97AB G0kQ5ehXMD2oxGaS8KbETCcK2Yy1IcvmSCoN3xMI9PPU/YhjzORX7/A+KSXv7Lb5yzBrzllRnuX DWrT+sAAWJexb1c8za1MwG+3VuNZzc9x8Yhdu1WlD7UPBk3tslsv+V3/wGp3s/uHFry2F1gUnUS /7lR7K8e4lYdwB7y1XD3kFu1buanWa+pEyOopm9l21M1L1hbsWQVEmZJ5wccOzWwXv2PEQ5075Z CeWEZnXpNobt8H9x2QygcytXqz5vVKq8MKT95eWJ8NMOFitW 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/orientation/hid-sensor-rotation.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/orientation/hid-sensor-rotation.c b/drivers/iio/orientation/hid-sensor-rotation.c index a033699910e8..5e8cadd5177a 100644 --- a/drivers/iio/orientation/hid-sensor-rotation.c +++ b/drivers/iio/orientation/hid-sensor-rotation.c @@ -327,7 +327,7 @@ static int hid_dev_rot_probe(struct platform_device *pdev) } /* Function to deinitialize the processing for usage id */ -static int hid_dev_rot_remove(struct platform_device *pdev) +static void hid_dev_rot_remove(struct platform_device *pdev) { struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; struct iio_dev *indio_dev = platform_get_drvdata(pdev); @@ -336,8 +336,6 @@ static int hid_dev_rot_remove(struct platform_device *pdev) sensor_hub_remove_callback(hsdev, hsdev->usage); iio_device_unregister(indio_dev); hid_sensor_remove_trigger(indio_dev, &rot_state->common_attributes); - - return 0; } static const struct platform_device_id hid_dev_rot_ids[] = { @@ -364,7 +362,7 @@ static struct platform_driver hid_dev_rot_platform_driver = { .pm = &hid_sensor_pm_ops, }, .probe = hid_dev_rot_probe, - .remove = hid_dev_rot_remove, + .remove_new = hid_dev_rot_remove, }; module_platform_driver(hid_dev_rot_platform_driver);