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 99316C433EF for ; Wed, 22 Dec 2021 16:15:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238532AbhLVQPr (ORCPT ); Wed, 22 Dec 2021 11:15:47 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:30791 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S237358AbhLVQPq (ORCPT ); Wed, 22 Dec 2021 11:15:46 -0500 X-IronPort-AV: E=Sophos;i="5.88,226,1635174000"; d="scan'208";a="104850903" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 23 Dec 2021 01:15:45 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id D014140A14A3; Thu, 23 Dec 2021 01:15:42 +0900 (JST) From: Lad Prabhakar To: Sean Wang , Vinod Koul , Matthias Brugger , dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Cc: Rob Herring , linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Lad Prabhakar Subject: [PATCH 1/3] dmaengine: nbpfaxi: Use platform_get_irq_optional() to get the interrupt Date: Wed, 22 Dec 2021 16:15:32 +0000 Message-Id: <20211222161534.1263-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211222161534.1263-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211222161534.1263-1-prabhakar.mahadev-lad.rj@bp.renesas.com> 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(). There are no non-DT users for this driver so interrupt range (irq_res->start-irq_res->end) is no longer required and with DT we will be sure it will be a single IRQ resource for each index. Signed-off-by: Lad Prabhakar --- drivers/dma/nbpfaxi.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/dma/nbpfaxi.c b/drivers/dma/nbpfaxi.c index 9c52c57919c6..135c12b0a2df 100644 --- a/drivers/dma/nbpfaxi.c +++ b/drivers/dma/nbpfaxi.c @@ -1294,7 +1294,7 @@ static int nbpf_probe(struct platform_device *pdev) struct device_node *np = dev->of_node; struct nbpf_device *nbpf; struct dma_device *dma_dev; - struct resource *iomem, *irq_res; + struct resource *iomem; const struct nbpf_config *cfg; int num_channels; int ret, irq, eirq, i; @@ -1335,13 +1335,12 @@ static int nbpf_probe(struct platform_device *pdev) nbpf->config = cfg; for (i = 0; irqs < ARRAY_SIZE(irqbuf); i++) { - irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, i); - if (!irq_res) + irq = platform_get_irq_optional(pdev, i); + if (irq == -ENXIO) break; - - for (irq = irq_res->start; irq <= irq_res->end; - irq++, irqs++) - irqbuf[irqs] = irq; + if (irq < 0) + return irq; + irqbuf[irqs++] = irq; } /* -- 2.17.1