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 6A7EDC4332F for ; Mon, 10 Jan 2022 14:40:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235687AbiAJOkt (ORCPT ); Mon, 10 Jan 2022 09:40:49 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:13349 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S235678AbiAJOks (ORCPT ); Mon, 10 Jan 2022 09:40:48 -0500 X-IronPort-AV: E=Sophos;i="5.88,277,1635174000"; d="scan'208";a="106017083" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 10 Jan 2022 23:40:47 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id F3829400194A; Mon, 10 Jan 2022 23:40:44 +0900 (JST) From: Lad Prabhakar To: =?UTF-8?q?Niklas=20S=C3=B6derlund?= , "Rafael J. Wysocki" , Daniel Lezcano , Amit Kucheria , Zhang Rui Cc: Rob Herring , Andy Shevchenko , Prabhakar , Lad Prabhakar , linux-renesas-soc@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4] thermal: rcar_thermal: Use platform_get_irq_optional() to get the interrupt Date: Mon, 10 Jan 2022 14:40:39 +0000 Message-Id: <20220110144039.5810-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq_optional(). Signed-off-by: Lad Prabhakar --- v3->v4: * Updated check as suggested by Andy v2->v3: * Fixed review comment pointed by Andy v1->v2 * Simplified checking error code * Break loop earlier if no interrupts are seen v1: https://lkml.org/lkml/2021/12/18/163 --- drivers/thermal/rcar_thermal.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/thermal/rcar_thermal.c b/drivers/thermal/rcar_thermal.c index b49f04daaf47..1d729ed4d685 100644 --- a/drivers/thermal/rcar_thermal.c +++ b/drivers/thermal/rcar_thermal.c @@ -445,7 +445,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) struct rcar_thermal_common *common; struct rcar_thermal_priv *priv; struct device *dev = &pdev->dev; - struct resource *res, *irq; + struct resource *res; const struct rcar_thermal_chip *chip = of_device_get_match_data(dev); int mres = 0; int i; @@ -467,9 +467,16 @@ static int rcar_thermal_probe(struct platform_device *pdev) pm_runtime_get_sync(dev); for (i = 0; i < chip->nirqs; i++) { - irq = platform_get_resource(pdev, IORESOURCE_IRQ, i); - if (!irq) - continue; + int irq; + + ret = platform_get_irq_optional(pdev, i); + if (ret < 0 && ret != -ENXIO) + goto error_unregister; + if (ret > 0) + irq = ret; + else + break; + if (!common->base) { /* * platform has IRQ support. @@ -487,7 +494,7 @@ static int rcar_thermal_probe(struct platform_device *pdev) idle = 0; /* polling delay is not needed */ } - ret = devm_request_irq(dev, irq->start, rcar_thermal_irq, + ret = devm_request_irq(dev, irq, rcar_thermal_irq, IRQF_SHARED, dev_name(dev), common); if (ret) { dev_err(dev, "irq request failed\n "); -- 2.17.1