From patchwork Sat Dec 18 16:52:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 12696766 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 3F345C433F5 for ; Sat, 18 Dec 2021 16:54:39 +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:References:In-Reply-To: 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: List-Owner; bh=Y2I8OJ16dhIfIOS9o2hv9URSeBezpYjhygk33B5PR9s=; b=tEt+hHXkEx8g8Y jXSbH5Vj6Fc2ZqsqdCdtX3xsM9MCSb/oOWHNMcZDfsmuqvxG8Bnqu1Ud0m8W8cB9xY8WhTQI4QbdZ 7cMPH0Uj+SFlyACOy5zud+lA6EWWtIRMMMURMlUoVoCINuEMFngrJKiqmrMYr3Wy+7uR8nd4gV2uf eSPbWHOwHaQNRKrm+pe58y79xzREBWjGUG8Xo47sQUUcJP6khc47xaLDoFlbn5EhYBzlG4Ya46zY0 9tnndrYNP25J5Y+jsUzGgul0oIzuCuHJd1G/LkJNwyjZiQyNvi80/mo4Yis7BOs/4H0NVxSW7X3Mr YeOtEXsMiUEEqfOSPXMQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mycxV-00EI8l-Et; Sat, 18 Dec 2021 16:53:21 +0000 Received: from relmlor1.renesas.com ([210.160.252.171] helo=relmlie5.idc.renesas.com) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mycxK-00EI4O-0V; Sat, 18 Dec 2021 16:53:11 +0000 X-IronPort-AV: E=Sophos;i="5.88,216,1635174000"; d="scan'208";a="103929842" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 19 Dec 2021 01:53:08 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 73CE540A5168; Sun, 19 Dec 2021 01:53:05 +0900 (JST) From: Lad Prabhakar To: Rob Herring , Nicolas Saenz Julienne , Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Chris Brandt , Wolfram Sang Cc: linux-i2c@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Lad Prabhakar Subject: [PATCH 1/3] i2c: bcm2835: Use platform_get_irq() to get the interrupt Date: Sat, 18 Dec 2021 16:52:56 +0000 Message-Id: <20211218165258.16716-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211218_085310_186433_9CCA5628 X-CRM114-Status: GOOD ( 11.00 ) 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 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(). Signed-off-by: Lad Prabhakar --- drivers/i2c/busses/i2c-bcm2835.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2835.c index 37443edbf754..d63dec5f3cb1 100644 --- a/drivers/i2c/busses/i2c-bcm2835.c +++ b/drivers/i2c/busses/i2c-bcm2835.c @@ -402,7 +402,7 @@ static const struct i2c_adapter_quirks bcm2835_i2c_quirks = { static int bcm2835_i2c_probe(struct platform_device *pdev) { struct bcm2835_i2c_dev *i2c_dev; - struct resource *mem, *irq; + struct resource *mem; int ret; struct i2c_adapter *adap; struct clk *mclk; @@ -452,12 +452,9 @@ static int bcm2835_i2c_probe(struct platform_device *pdev) return ret; } - irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!irq) { - dev_err(&pdev->dev, "No IRQ resource\n"); - return -ENODEV; - } - i2c_dev->irq = irq->start; + i2c_dev->irq = platform_get_irq(pdev, 0); + if (i2c_dev->irq <= 0) + return i2c_dev->irq ? i2c_dev->irq : -ENXIO; ret = request_irq(i2c_dev->irq, bcm2835_i2c_isr, IRQF_SHARED, dev_name(&pdev->dev), i2c_dev);