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 C987EC54FB9 for ; Wed, 15 Nov 2023 19:58:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1343931AbjKOT6b (ORCPT ); Wed, 15 Nov 2023 14:58:31 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51384 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343932AbjKOT6a (ORCPT ); Wed, 15 Nov 2023 14:58:30 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 39E7192 for ; Wed, 15 Nov 2023 11:58:27 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9F10FC433C7; Wed, 15 Nov 2023 19:58:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700078306; bh=3o7mEmJqbjCpkRjgzaM2wYFuznDaZvALyg6n7NVOe7M=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HsAM5AGhejTiJAdKp2PqIexWhAdmWCHH3csjuYTIek8KOej4T9saE2k9NSuRr5EtE BHlhDbKmBXKNUwGB6ekoA3bVcgoz1UoKm1c16rFIdL8ALUkq49DVWetK6olJ3paWAs T55lKXmHD0fqInBno7yRc2p+UKQ61ZlxPIH+Xt/4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Herve Codina , Christophe Leroy , Lee Jones , Sasha Levin Subject: [PATCH 6.1 241/379] mfd: core: Ensure disabled devices are skipped without aborting Date: Wed, 15 Nov 2023 14:25:16 -0500 Message-ID: <20231115192659.387183140@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115192645.143643130@linuxfoundation.org> References: <20231115192645.143643130@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Herve Codina [ Upstream commit 7ba7bdef4d14e3722e2842da3b48cbadb73e52d6 ] The loop searching for a matching device based on its compatible string is aborted when a matching disabled device is found. This abort prevents to add devices as soon as one disabled device is found. Continue searching for an other device instead of aborting on the first disabled one fixes the issue. Fixes: 22380b65dc70 ("mfd: mfd-core: Ensure disabled devices are ignored without error") Signed-off-by: Herve Codina Reviewed-by: Christophe Leroy Signed-off-by: Christophe Leroy Link: https://lore.kernel.org/r/528425d6472176bb1d02d79596b51f8c28a551cc.1692376361.git.christophe.leroy@csgroup.eu Signed-off-by: Lee Jones Signed-off-by: Sasha Levin --- drivers/mfd/mfd-core.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index 16d1861e96823..97909e3e2c303 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -176,6 +176,7 @@ static int mfd_add_device(struct device *parent, int id, struct platform_device *pdev; struct device_node *np = NULL; struct mfd_of_node_entry *of_entry, *tmp; + bool disabled = false; int ret = -ENOMEM; int platform_id; int r; @@ -213,11 +214,10 @@ static int mfd_add_device(struct device *parent, int id, if (IS_ENABLED(CONFIG_OF) && parent->of_node && cell->of_compatible) { for_each_child_of_node(parent->of_node, np) { if (of_device_is_compatible(np, cell->of_compatible)) { - /* Ignore 'disabled' devices error free */ + /* Skip 'disabled' devices */ if (!of_device_is_available(np)) { - of_node_put(np); - ret = 0; - goto fail_alias; + disabled = true; + continue; } ret = mfd_match_of_node_to_dev(pdev, np, cell); @@ -227,10 +227,17 @@ static int mfd_add_device(struct device *parent, int id, if (ret) goto fail_alias; - break; + goto match; } } + if (disabled) { + /* Ignore 'disabled' devices error free */ + ret = 0; + goto fail_alias; + } + +match: if (!pdev->dev.of_node) pr_warn("%s: Failed to locate of_node [id: %d]\n", cell->name, platform_id); -- 2.42.0