From patchwork Thu Dec 16 21:47:47 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 12696531 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 AF60AC433EF for ; Thu, 16 Dec 2021 21:49:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:List-Subscribe:List-Help: List-Post:List-Archive:List-Unsubscribe:List-Id:Message-Id:Date:Subject:Cc:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=H1PMnSu6sB7mTVTNmaTW5Mr6Z9PWd1JZzcfJE6/LmoI=; b=UFOPHnBb0pmcPk 6gaxdf97soT5AU0suwdXNJ33YjyRjh4Q0jVHlZZYNFYCLQK/9VLIzzvw8kfgdQWz48M3E5sd8I89c pD1zCqMyJaGDAvb3pFJpKoaGBlVca5yDEmvVtIWYAQwVh00AsZPcpZC/a1oHRn5tgGnG+gqxZURzL cOmVVnsXa4pHsZvjlNlN6li8UB5V8b6SSXmG46ouEcQiWlp7JbTJuo2ueBJqFxnQOdl1F7iuiSMfa /ZTIYDyjwMpgHdtBHBscjc+2Q0WXgX4YNqK1mZfxfUkiDnIaZVvaZqsPgsaBK6dZz+WXB//c4BrhJ ssDrBnEm9xtCfc1jq6fQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mxybb-007izL-Q3; Thu, 16 Dec 2021 21:48:03 +0000 Received: from relmlor2.renesas.com ([210.160.252.172] helo=relmlie6.idc.renesas.com) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mxybY-007ixt-PN for linux-arm-kernel@lists.infradead.org; Thu, 16 Dec 2021 21:48:02 +0000 X-IronPort-AV: E=Sophos;i="5.88,212,1635174000"; d="scan'208";a="104202773" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 17 Dec 2021 06:47:54 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 4422841114A8; Fri, 17 Dec 2021 06:47:52 +0900 (JST) From: Lad Prabhakar To: Wim Van Sebroeck , Guenter Roeck , Krzysztof Kozlowski , linux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Prabhakar , Rob Herring , Lad Prabhakar Subject: [PATCH v2] watchdog: s3c2410: Use platform_get_irq() to get the interrupt Date: Thu, 16 Dec 2021 21:47:47 +0000 Message-Id: <20211216214747.10454-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211216_134800_959617_57C628D7 X-CRM114-Status: GOOD ( 13.79 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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 bypassed the hierarchical setup and messed up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Signed-off-by: Lad Prabhakar Reviewed-by: Guenter Roeck Reviewed-by: Krzysztof Kozlowski --- v1->v2 * Dropped goto and directly returned on error --- drivers/watchdog/s3c2410_wdt.c | 15 ++++++--------- 1 file changed, 6 insertions(+), 9 deletions(-) diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index 2395f353e52d..d92bc1c24182 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -513,9 +513,9 @@ static int s3c2410wdt_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; struct s3c2410_wdt *wdt; - struct resource *wdt_irq; unsigned int wtcon; int started = 0; + int wdt_irq; int ret; wdt = devm_kzalloc(dev, sizeof(*wdt), GFP_KERNEL); @@ -536,12 +536,9 @@ static int s3c2410wdt_probe(struct platform_device *pdev) } } - wdt_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (wdt_irq == NULL) { - dev_err(dev, "no irq resource specified\n"); - ret = -ENOENT; - goto err; - } + wdt_irq = platform_get_irq(pdev, 0); + if (wdt_irq < 0) + return wdt_irq; /* get the memory region for the watchdog timer */ wdt->reg_base = devm_platform_ioremap_resource(pdev, 0); @@ -592,8 +589,8 @@ static int s3c2410wdt_probe(struct platform_device *pdev) dev_info(dev, "default timer value is out of range, cannot start\n"); } - ret = devm_request_irq(dev, wdt_irq->start, s3c2410wdt_irq, 0, - pdev->name, pdev); + ret = devm_request_irq(dev, wdt_irq, s3c2410wdt_irq, 0, + pdev->name, pdev); if (ret != 0) { dev_err(dev, "failed to install irq (%d)\n", ret); goto err_cpufreq;