From patchwork Fri Aug 18 16:39:17 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christophe Leroy X-Patchwork-Id: 715022 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 alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3B4F7C71159 for ; Fri, 18 Aug 2023 16:47:31 +0000 (UTC) Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id D72B8ED4; Fri, 18 Aug 2023 18:46:38 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz D72B8ED4 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1692377248; bh=8BNbuqxVlgdpO/3hftvkaUDsbwCHVuDsUJYG1DcCXCY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-Id: List-Archive:List-Help:List-Owner:List-Post:List-Subscribe: List-Unsubscribe:From; b=IStwM6UBJRlbYRLB7R15rx5nwmnIVVeiEaK/MHcliuC4KlTdiE/Fy0SM5XW0yX3xx 520G7WhUupnrfdIZxXCCBlSNVEotGVrwf6uNo5Ks9rhzEQlq1s1JktSjCRF8TaJFH3 ZVcpUw23I4V1sEV1ZKmpGS9IIhFvXAnRKLb/SRtY= Received: by alsa1.perex.cz (Postfix, from userid 50401) id D3D8EF80552; Fri, 18 Aug 2023 18:44:35 +0200 (CEST) Received: from mailman-core.alsa-project.org (mailman-core.alsa-project.org [10.254.200.10]) by alsa1.perex.cz (Postfix) with ESMTP id 4412FF80552; Fri, 18 Aug 2023 18:44:35 +0200 (CEST) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 1C882F8062D; Fri, 18 Aug 2023 18:41:17 +0200 (CEST) Received: from pegase1.c-s.fr (unknown [90.115.179.12]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id 716C3F80617 for ; Fri, 18 Aug 2023 18:41:12 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 716C3F80617 Received: from localhost (mailhub3.si.c-s.fr [192.168.12.233]) by localhost (Postfix) with ESMTP id 4RS7060ztwz9vjf; Fri, 18 Aug 2023 18:40:22 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Ppn1n9uuWSiV; Fri, 18 Aug 2023 18:40:22 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4RS6zp2ryfz9vhl; Fri, 18 Aug 2023 18:40:06 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 581038B778; Fri, 18 Aug 2023 18:40:06 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id NVmsYWnylAQZ; Fri, 18 Aug 2023 18:40:06 +0200 (CEST) Received: from PO20335.IDSI0.si.c-s.fr (PO17626.IDSI0.si.c-s.fr [172.19.54.29]) by messagerie.si.c-s.fr (Postfix) with ESMTP id DA81D8B775; Fri, 18 Aug 2023 18:40:04 +0200 (CEST) Received: from PO20335.IDSI0.si.c-s.fr (localhost [127.0.0.1]) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.16.1) with ESMTPS id 37IGe0qF142035 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Fri, 18 Aug 2023 18:40:00 +0200 Received: (from chleroy@localhost) by PO20335.IDSI0.si.c-s.fr (8.17.1/8.17.1/Submit) id 37IGe0xK142034; Fri, 18 Aug 2023 18:40:00 +0200 X-Authentication-Warning: PO20335.IDSI0.si.c-s.fr: chleroy set sender to christophe.leroy@csgroup.eu using -f From: Christophe Leroy To: Herve Codina , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lee Jones , Linus Walleij , Qiang Zhao , Li Yang , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Shengjiu Wang , Xiubo Li , Fabio Estevam , Nicolin Chen , Christophe Leroy , Randy Dunlap Cc: netdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-gpio@vger.kernel.org, linux-arm-kernel@lists.infradead.org, alsa-devel@alsa-project.org, Thomas Petazzoni Subject: [PATCH v4 23/28] mfd: core: Ensure disabled devices are skiped without aborting Date: Fri, 18 Aug 2023 18:39:17 +0200 Message-ID: <528425d6472176bb1d02d79596b51f8c28a551cc.1692376361.git.christophe.leroy@csgroup.eu> X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1692376735; l=2101; i=christophe.leroy@csgroup.eu; s=20211009; h=from:subject:message-id; bh=hAkFOA9R8r8JmUyKnLgaEreJkNGYzPTwTAaZA8K8KA4=; b=YeZOkU1flwAP6HFasxcc+kTmXgQb5aqLnFHmBhQGqdqq+bhR8cxXtiH2m0yGrTbC5qzh5/Ok6 SXKqp7mwxKtD2wGLbjITvC+WW+jVpAlvefMfI7R+cLvZ1Yv0L2m6/wO X-Developer-Key: i=christophe.leroy@csgroup.eu; a=ed25519; pk=HIzTzUj91asvincQGOFx6+ZF5AoUuP9GdOtQChs7Mm0= Message-ID-Hash: 3LDDDEA5VB53OAMPT74FZXWBZU7A6GAD X-Message-ID-Hash: 3LDDDEA5VB53OAMPT74FZXWBZU7A6GAD X-MailFrom: christophe.leroy@csgroup.eu X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-alsa-devel.alsa-project.org-0; header-match-alsa-devel.alsa-project.org-1; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header X-Mailman-Version: 3.3.8 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: From: Herve Codina 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 --- 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 0ed7c0d7784e..2b85509a90fc 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -146,6 +146,7 @@ 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; @@ -183,11 +184,10 @@ 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); @@ -197,10 +197,17 @@ 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);