From patchwork Fri Dec 24 14:29:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar Mahadev Lad X-Patchwork-Id: 528110 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 8C5DDC43219 for ; Fri, 24 Dec 2021 14:29:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352946AbhLXO3y (ORCPT ); Fri, 24 Dec 2021 09:29:54 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:19891 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1352945AbhLXO3w (ORCPT ); Fri, 24 Dec 2021 09:29:52 -0500 X-IronPort-AV: E=Sophos;i="5.88,232,1635174000"; d="scan'208";a="105108389" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie6.idc.renesas.com with ESMTP; 24 Dec 2021 23:29:52 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 661BC4000AA9; Fri, 24 Dec 2021 23:29:49 +0900 (JST) From: Lad Prabhakar To: linux-serial@vger.kernel.org, Greg Kroah-Hartman , Jiri Slaby , Neil Armstrong , Kevin Hilman , Jerome Brunet , Martin Blumenstingl Cc: Rob Herring , linux-kernel@vger.kernel.org, Prabhakar , Lad Prabhakar , linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org Subject: [PATCH 04/10] serial: meson: Use platform_get_irq() to get the interrupt Date: Fri, 24 Dec 2021 14:29:10 +0000 Message-Id: <20211224142917.6966-5-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211224142917.6966-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211224142917.6966-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-serial@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(). Signed-off-by: Lad Prabhakar --- drivers/tty/serial/meson_uart.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/tty/serial/meson_uart.c b/drivers/tty/serial/meson_uart.c index efee3935917f..4bc87f0c5868 100644 --- a/drivers/tty/serial/meson_uart.c +++ b/drivers/tty/serial/meson_uart.c @@ -713,10 +713,11 @@ static int meson_uart_probe_clocks(struct platform_device *pdev, static int meson_uart_probe(struct platform_device *pdev) { - struct resource *res_mem, *res_irq; + struct resource *res_mem; struct uart_port *port; u32 fifosize = 64; /* Default is 64, 128 for EE UART_0 */ int ret = 0; + int irq; if (pdev->dev.of_node) pdev->id = of_alias_get_id(pdev->dev.of_node, "serial"); @@ -739,9 +740,9 @@ static int meson_uart_probe(struct platform_device *pdev) if (!res_mem) return -ENODEV; - res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!res_irq) - return -ENODEV; + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize); @@ -766,7 +767,7 @@ static int meson_uart_probe(struct platform_device *pdev) port->iotype = UPIO_MEM; port->mapbase = res_mem->start; port->mapsize = resource_size(res_mem); - port->irq = res_irq->start; + port->irq = irq; port->flags = UPF_BOOT_AUTOCONF | UPF_LOW_LATENCY; port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_MESON_CONSOLE); port->dev = &pdev->dev;