From patchwork Wed Mar 6 17:50:49 2024 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: 13584339 Received: from metis.whiteo.stw.pengutronix.de (metis.whiteo.stw.pengutronix.de [185.203.201.7]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5252813BAF1 for ; Wed, 6 Mar 2024 17:51:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.203.201.7 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709747473; cv=none; b=aMMwpAjWuM2S+MDQmTIWFJOvNaibfLuwK38FHp7zt/L4bg0wA1stYAHwudZM2Dmh3JaTDDPnmVjZqKeWet1CwkKK4GMSCDD0voWaW9D+Z06pABFyeEd2cQTArqvDpPPlrJEM8MZ3iGHsszQLe7FqKK2kcnAvzRTzBxAqW2QVRtY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709747473; c=relaxed/simple; bh=eK4NW9Rk4JvCfGAlFvUDp7R7qIYr4GqYENwx7iHN+QA=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=poTvBESthxDBFXKDiu8JQqFge6VeoHcRMW3swTHmIF1KVnvNVfxzGeuBusYi5+kAEvNjJ4B6Ff9+gZ/3mdiK/iwydHWI5iD49GOTkd7RcNo5hO2smv6EPx5NEbN3v/35wkwpi5YTb2f+XGTY4wh43A2R/adhQjR9dHF1L5v9JcQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de; spf=pass smtp.mailfrom=pengutronix.de; arc=none smtp.client-ip=185.203.201.7 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pengutronix.de 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 1rhvPw-0002OA-Ls; Wed, 06 Mar 2024 18:51:00 +0100 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 1rhvPw-004n6g-4N; Wed, 06 Mar 2024 18:51:00 +0100 Received: from ukl by ptz.office.stw.pengutronix.de with local (Exim 4.96) (envelope-from ) id 1rhvPw-000ny5-09; Wed, 06 Mar 2024 18:51:00 +0100 From: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= To: Jiri Kosina , Benjamin Tissoires Cc: Jonathan Cameron , Srinivas Pandruvada , linux-input@vger.kernel.org, linux-iio@vger.kernel.org, kernel@pengutronix.de Subject: [PATCH 2/3] HID: hid-sensor-custom: Convert to platform remove callback returning void Date: Wed, 6 Mar 2024 18:50:49 +0100 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2267; i=u.kleine-koenig@pengutronix.de; h=from:subject:message-id; bh=eK4NW9Rk4JvCfGAlFvUDp7R7qIYr4GqYENwx7iHN+QA=; b=owEBbQGS/pANAwAKAY+A+1h9Ev5OAcsmYgBl6Kz6u4elbe732bZ1momXG+oG1DpXHlk/tdD/Z 6Re+1mS/peJATMEAAEKAB0WIQQ/gaxpOnoeWYmt/tOPgPtYfRL+TgUCZeis+gAKCRCPgPtYfRL+ TmU7B/0eaFD339wXp3yiNszZyWj0Szdjw2jZdUB8ijcWtke+65zdHwczl7MoPf7Y5ynEyBVFjK9 o7Xxa1DlDTTV57pHtZzVLFDrf8q5ByxSp3ZzLXE8CwPHIdlmqfpnaQAE3z0IB2hfAVMeOuNYNAq rd1AYbhRcDMJtXwKlv79cps8OyOeM8WjQFlfKvD80dlMBDCQHMPO8jnTio89KvWTKPj1eqXTq7r CtYD/dhQD7i18T+n71+Cp72y8v8bNEpKax8Ax+lUVnzwYfKLAFYlxoOTvktFqxqRI7jw8d81vy/ OeM3hCNlc7uyh9J7lJiabWrVfckmyOwfiufuNPNKLM9gfpDa 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-iio@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 Acked-by: Srinivas Pandruvada Reviewed-by: Jonathan Cameron --- drivers/hid/hid-sensor-custom.c | 8 +++----- 1 file changed, 3 insertions(+), 5 deletions(-) diff --git a/drivers/hid/hid-sensor-custom.c b/drivers/hid/hid-sensor-custom.c index d85398721659..de7287f3af61 100644 --- a/drivers/hid/hid-sensor-custom.c +++ b/drivers/hid/hid-sensor-custom.c @@ -1032,14 +1032,14 @@ static int hid_sensor_custom_probe(struct platform_device *pdev) return ret; } -static int hid_sensor_custom_remove(struct platform_device *pdev) +static void hid_sensor_custom_remove(struct platform_device *pdev) { struct hid_sensor_custom *sensor_inst = platform_get_drvdata(pdev); struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data; if (sensor_inst->custom_pdev) { platform_device_unregister(sensor_inst->custom_pdev); - return 0; + return; } hid_sensor_custom_dev_if_remove(sensor_inst); @@ -1047,8 +1047,6 @@ static int hid_sensor_custom_remove(struct platform_device *pdev) sysfs_remove_group(&sensor_inst->pdev->dev.kobj, &enable_sensor_attr_group); sensor_hub_remove_callback(hsdev, hsdev->usage); - - return 0; } static const struct platform_device_id hid_sensor_custom_ids[] = { @@ -1068,7 +1066,7 @@ static struct platform_driver hid_sensor_custom_platform_driver = { .name = KBUILD_MODNAME, }, .probe = hid_sensor_custom_probe, - .remove = hid_sensor_custom_remove, + .remove_new = hid_sensor_custom_remove, }; module_platform_driver(hid_sensor_custom_platform_driver);