From patchwork Tue Sep 19 17:49:16 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: 13391704 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 6F47ACE79AB for ; Tue, 19 Sep 2023 17:50:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232784AbjISRuO (ORCPT ); Tue, 19 Sep 2023 13:50:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45210 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232781AbjISRuM (ORCPT ); Tue, 19 Sep 2023 13:50:12 -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 D96B3A6 for ; Tue, 19 Sep 2023 10:50:06 -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 1qierE-0006pR-W7; Tue, 19 Sep 2023 19:49:57 +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 1qierD-007VXa-Ha; Tue, 19 Sep 2023 19:49:55 +0200 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.94.2) (envelope-from ) id 1qierD-0034Yh-8R; Tue, 19 Sep 2023 19:49:55 +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 34/49] iio: gyro: hid-sensor-gyro-3d: Convert to platform remove callback returning void Date: Tue, 19 Sep 2023 19:49:16 +0200 Message-Id: <20230919174931.1417681-35-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=2115; i=u.kleine-koenig@pengutronix.de; h=from:subject; bh=LsFMCu/59s/o//XlWzq+zXpjMPw78iwzcioYjxKNai0=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBlCd8V3JOis6CtIlBcx/dYjMKOgEB8SvhQFPJU9 7jFinopSUqJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZQnfFQAKCRCPgPtYfRL+ To0cCAC5Wkk7iYyyrUv3ZUOQHCnVbpvL3dMAaN8MStGzAUtR67Kgn8CDZxCvnfyMToPb9QSYUuj i8UmrtoYTWOEkOv+XYa5wDk0ZciGvqQf2iVE7nNfqAuFa8JvY756JFbnxaRThucGkw5/8KJh365 cVOPCI5F4m3q1BflhHoV8iFxrKqawdCNtEdWOmLbTEJg9GNieDhT6jetrUWyWEOdZLUcpl6yA6w 9DkPgnwE3nqHDYS6bQcgCNsMhqDz/TtShv62F930xFiVYF6rVuIxlGkIF3EFtKpFNW9EsdWD2Nn KXTzNvNZSctiAGk+f5X+hIYOl9wZrR5/MGpNXIukOlGaymVi 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/gyro/hid-sensor-gyro-3d.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c index 698c50da1f10..59a38bf9459b 100644 --- a/drivers/iio/gyro/hid-sensor-gyro-3d.c +++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c @@ -359,7 +359,7 @@ static int hid_gyro_3d_probe(struct platform_device *pdev) } /* Function to deinitialize the processing for usage id */ -static int hid_gyro_3d_remove(struct platform_device *pdev) +static void hid_gyro_3d_remove(struct platform_device *pdev) { struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; struct iio_dev *indio_dev = platform_get_drvdata(pdev); @@ -368,8 +368,6 @@ static int hid_gyro_3d_remove(struct platform_device *pdev) sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_GYRO_3D); iio_device_unregister(indio_dev); hid_sensor_remove_trigger(indio_dev, &gyro_state->common_attributes); - - return 0; } static const struct platform_device_id hid_gyro_3d_ids[] = { @@ -388,7 +386,7 @@ static struct platform_driver hid_gyro_3d_platform_driver = { .pm = &hid_sensor_pm_ops, }, .probe = hid_gyro_3d_probe, - .remove = hid_gyro_3d_remove, + .remove_new = hid_gyro_3d_remove, }; module_platform_driver(hid_gyro_3d_platform_driver);