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 717EDC32771 for ; Fri, 19 Aug 2022 15:56:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1350669AbiHSP4q (ORCPT ); Fri, 19 Aug 2022 11:56:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40046 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1350554AbiHSPzJ (ORCPT ); Fri, 19 Aug 2022 11:55:09 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5875A107D90; Fri, 19 Aug 2022 08:49:57 -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 5F78761736; Fri, 19 Aug 2022 15:49:56 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6E3E4C43470; Fri, 19 Aug 2022 15:49:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660924195; bh=9LjwY+T4K0WpW3gEj2ZZaN8kTnJt6JPVShGg+3jjePY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mQH0E71SDFP4wg4QvyybSuvuL2f6KATJNZx3jiz21BdKpWW9aOWAvlR/H/EXj6spt Iwdj9Cz1/BoSkw6sTpu1c/N90MjkGnQKmieVjl2LfNbhg8THdX+Bqa/wUAq2/UiagP cSwcIV+r7ZcepzTVp3+LIw+9O9L0Eli3fBxfxKu4= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Antonio Borneo , Marc Zyngier , Sasha Levin Subject: [PATCH 5.10 081/545] genirq: Dont return error on missing optional irq_request_resources() Date: Fri, 19 Aug 2022 17:37:31 +0200 Message-Id: <20220819153832.881766941@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220819153829.135562864@linuxfoundation.org> References: <20220819153829.135562864@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: linux-kernel@vger.kernel.org From: Antonio Borneo [ Upstream commit 95001b756467ecc9f5973eb5e74e97699d9bbdf1 ] Function irq_chip::irq_request_resources() is reported as optional in the declaration of struct irq_chip. If the parent irq_chip does not implement it, we should ignore it and return. Don't return error if the functions is missing. Signed-off-by: Antonio Borneo Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/20220512160544.13561-1-antonio.borneo@foss.st.com Signed-off-by: Sasha Levin --- kernel/irq/chip.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/irq/chip.c b/kernel/irq/chip.c index 0b70811fd956..621d8dd157bc 100644 --- a/kernel/irq/chip.c +++ b/kernel/irq/chip.c @@ -1543,7 +1543,8 @@ int irq_chip_request_resources_parent(struct irq_data *data) if (data->chip->irq_request_resources) return data->chip->irq_request_resources(data); - return -ENOSYS; + /* no error on missing optional irq_chip::irq_request_resources */ + return 0; } EXPORT_SYMBOL_GPL(irq_chip_request_resources_parent); -- 2.35.1