From patchwork Fri Nov 18 12:25:36 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13048187 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 1AF74C4321E for ; Fri, 18 Nov 2022 12:27:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241828AbiKRM1R (ORCPT ); Fri, 18 Nov 2022 07:27:17 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36844 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241846AbiKRM0c (ORCPT ); Fri, 18 Nov 2022 07:26:32 -0500 Received: from mail-wm1-x32a.google.com (mail-wm1-x32a.google.com [IPv6:2a00:1450:4864:20::32a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3F1609AC83 for ; Fri, 18 Nov 2022 04:26:15 -0800 (PST) Received: by mail-wm1-x32a.google.com with SMTP id t4so3509593wmj.5 for ; Fri, 18 Nov 2022 04:26:15 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20210112.gappssmtp.com; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=j23hZnphv0jcgZfiOY9qWXNDpMCFFj9PRM3bEUKGmc4=; b=XgxLUl8pt1XNL0iLDiU427YWuA+WEaiaCkEvGhMxKvHS7AzO0WGlJgFy/efbY2ozcc DOQb1IEBoBtO3VW7x+t4MJQYkrfiPsUkhRvFkGp9UAoID4XLDZR8DnoIwBtbmXRAHpOc 1oAXfiRsZyf4XuQMoOBnck65CaxmocuvADWKoZ3v+xS5uJMkpxOVxStEib7omyU7FG7X C0XU2f6TZgVvuoiBIgwqpOGHZ+qbVlVWTpDgUyO2oTqQxS4y7gMJWOMZmlX9oupLSzvj V5IED7b3gL8JPqwwin/Vx0dh/ewtVRM8QWnjapPvxRs6gVqFpNBCjdSiH9oBrQFTwi9T vmSw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=j23hZnphv0jcgZfiOY9qWXNDpMCFFj9PRM3bEUKGmc4=; b=AtKspoOXSobFULYrIbrUEUl7NVv0g30kJ25IFC+p7WM+wIVEY1jte5RRALEsMRJmYd ARB/mMetWTh+Nor0ecCzMhizifqVAxDt0iV7eC9wJiijlUK1q0rcplSFSKP/azS+R1n6 o29xUBX2cMUCVWB+2z64MaJOgolTLk6sufA44WkzO6Ma67va0hzbYe/nUKEuszdzFj8d uLI7N6a9SfKdU8atI1RlsKG8e4xSjGmRXHeNhrl9UxCi4Ma4K93xaSYFS4VFcT9uSFmk V9ueGcUouFkIzADFMOJlO/3vcP3qb1DqT1donszxZyJChtb0AvY4oV6KaTej4CiZsS8E 7JMg== X-Gm-Message-State: ANoB5pmxhQ59l9cCTqQHtct8WHsQL3wrO3T14qz9Bt+kVp/uavnaoDyE BBHgaSL8hvxHoLIqfuxnGqs5oA== X-Google-Smtp-Source: AA0mqf6r1UopoD85mncIUva/+dvusTt3tcZCpOD8lLQGcqCaB9WfI6v27mi+Pj5NXkUPSpwj0H1JlQ== X-Received: by 2002:a05:600c:19d0:b0:3cf:e7b7:d87d with SMTP id u16-20020a05600c19d000b003cfe7b7d87dmr7852582wmq.95.1668774373630; Fri, 18 Nov 2022 04:26:13 -0800 (PST) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:b10c:1279:a704:75d4]) by smtp.gmail.com with ESMTPSA id f19-20020a05600c155300b003c6f3e5ba42sm9873958wmg.46.2022.11.18.04.26.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 18 Nov 2022 04:26:13 -0800 (PST) From: Bartosz Golaszewski To: Andy Gross , Bjorn Andersson , Konrad Dybcio , Greg Kroah-Hartman , Jiri Slaby , Srinivas Kandagatla , Vinod Koul , Alex Elder Cc: linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-serial@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH 12/15] tty: serial: provide devm_uart_add_one_port() Date: Fri, 18 Nov 2022 13:25:36 +0100 Message-Id: <20221118122539.384993-13-brgl@bgdev.pl> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20221118122539.384993-1-brgl@bgdev.pl> References: <20221118122539.384993-1-brgl@bgdev.pl> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Bartosz Golaszewski Provide a devres variant of uart_add_one_port() that removes the managed port at device detach. Signed-off-by: Bartosz Golaszewski --- .../driver-api/driver-model/devres.rst | 3 ++ drivers/tty/serial/serial_core.c | 36 +++++++++++++++++++ include/linux/serial_core.h | 6 ++++ 3 files changed, 45 insertions(+) diff --git a/Documentation/driver-api/driver-model/devres.rst b/Documentation/driver-api/driver-model/devres.rst index 56082265e8e5..5d07a8c1eadb 100644 --- a/Documentation/driver-api/driver-model/devres.rst +++ b/Documentation/driver-api/driver-model/devres.rst @@ -436,6 +436,9 @@ RTC SERDEV devm_serdev_device_open() +SERIAL + devm_uart_add_one_port() + SLAVE DMA ENGINE devm_acpi_dma_controller_register() diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c index 179ee199df34..005190b279b3 100644 --- a/drivers/tty/serial/serial_core.c +++ b/drivers/tty/serial/serial_core.c @@ -3217,6 +3217,42 @@ int uart_remove_one_port(struct uart_driver *drv, struct uart_port *uport) } EXPORT_SYMBOL(uart_remove_one_port); +struct uart_port_devres { + struct uart_driver *drv; + struct uart_port *port; +}; + +static void devm_uart_remove_one_port(struct device *dev, void *data) +{ + struct uart_port_devres *res = data; + + uart_remove_one_port(res->drv, res->port); +} + +int devm_uart_add_one_port(struct device *dev, + struct uart_driver *drv, struct uart_port *port) +{ + struct uart_port_devres *res; + int ret; + + res = devres_alloc(devm_uart_remove_one_port, sizeof(*res), GFP_KERNEL); + if (!res) + return -1; + + ret = uart_add_one_port(drv, port); + if (ret) { + devres_free(res); + return -1; + } + + res->drv = drv; + res->port = port; + devres_add(dev, res); + + return 0; +} +EXPORT_SYMBOL(devm_uart_add_one_port); + /** * uart_match_port - are the two ports equivalent? * @port1: first port diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index d657f2a42a7b..d0911f04706e 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -771,6 +771,12 @@ int uart_remove_one_port(struct uart_driver *reg, struct uart_port *port); bool uart_match_port(const struct uart_port *port1, const struct uart_port *port2); +/* + * UART devres + */ +int devm_uart_add_one_port(struct device *dev, + struct uart_driver *drv, struct uart_port *port); + /* * Power Management */