From mboxrd@z Thu Jan 1 00:00:00 1970 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 18E22C7EE2E for ; Mon, 12 Jun 2023 10:54:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236077AbjFLKyT (ORCPT ); Mon, 12 Jun 2023 06:54:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55618 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236027AbjFLKyG (ORCPT ); Mon, 12 Jun 2023 06:54:06 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A97E658E for ; Mon, 12 Jun 2023 03:39:25 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 115D5612B4 for ; Mon, 12 Jun 2023 10:39:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 29057C433EF; Mon, 12 Jun 2023 10:39:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1686566364; bh=IGQRn1anA1+U0ZlbmreTwsQlu1reGjcuuvQiSk27M+I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=uNT5GExjAupXRc8ycqoyNWznaTfEsUVVbLW9JCAIdw7PMylutqCbFlQ7H5fj7Bi4z JeJn7DBPCwj7C09V1RyHFlbXJFHzt4ZMbTFQlvhEu4u1LFKcAAxpzRF2dr7stYb6a7 /AOa/uOBEi338i75iiMRp7ELdyB6bHdLdK1yzU1M= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , AngeloGioacchino Del Regno , Takashi Iwai , Nicolas Ferre , Mark Brown , Sasha Levin Subject: [PATCH 5.15 76/91] ASoC: mediatek: mt8195-afe-pcm: Convert to platform remove callback returning void Date: Mon, 12 Jun 2023 12:27:05 +0200 Message-ID: <20230612101705.242568298@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230612101702.085813286@linuxfoundation.org> References: <20230612101702.085813286@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Uwe Kleine-König [ Upstream commit 6461fee68064ba970e3ba90241fe5f5e038aa9d4 ] 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 (mostly) ignored 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. Trivially convert this driver from always returning zero in the remove callback to the void returning variant. Signed-off-by: Uwe Kleine-König Reviewed-by: AngeloGioacchino Del Regno Acked-by: Takashi Iwai Acked-by: Nicolas Ferre Link: https://lore.kernel.org/r/20230315150745.67084-114-u.kleine-koenig@pengutronix.de Signed-off-by: Mark Brown Stable-dep-of: dc93f0dcb436 ("ASoC: mediatek: mt8195: fix use-after-free in driver remove path") Signed-off-by: Sasha Levin --- sound/soc/mediatek/mt8195/mt8195-afe-pcm.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c index 2edb40fe27ccb..6c15d45f4a006 100644 --- a/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c +++ b/sound/soc/mediatek/mt8195/mt8195-afe-pcm.c @@ -3237,7 +3237,7 @@ static int mt8195_afe_pcm_dev_probe(struct platform_device *pdev) return ret; } -static int mt8195_afe_pcm_dev_remove(struct platform_device *pdev) +static void mt8195_afe_pcm_dev_remove(struct platform_device *pdev) { struct mtk_base_afe *afe = platform_get_drvdata(pdev); @@ -3248,7 +3248,6 @@ static int mt8195_afe_pcm_dev_remove(struct platform_device *pdev) mt8195_afe_runtime_suspend(&pdev->dev); mt8195_afe_deinit_clock(afe); - return 0; } static const struct of_device_id mt8195_afe_pcm_dt_match[] = { @@ -3271,7 +3270,7 @@ static struct platform_driver mt8195_afe_pcm_driver = { #endif }, .probe = mt8195_afe_pcm_dev_probe, - .remove = mt8195_afe_pcm_dev_remove, + .remove_new = mt8195_afe_pcm_dev_remove, }; module_platform_driver(mt8195_afe_pcm_driver); -- 2.39.2