From patchwork Wed Mar 3 09:16:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Shevchenko X-Patchwork-Id: 12115055 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7F79DC432C3 for ; Thu, 4 Mar 2021 00:30:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4A21964EEC for ; Thu, 4 Mar 2021 00:30:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1349976AbhCDAaR (ORCPT ); Wed, 3 Mar 2021 19:30:17 -0500 Received: from mga11.intel.com ([192.55.52.93]:56415 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351711AbhCCKrW (ORCPT ); Wed, 3 Mar 2021 05:47:22 -0500 IronPort-SDR: wzjZjHaZeWo7fNwnzKgvlyRtNLH4qPrdLxQIsoGkn55xiReaiO9HT3ws76aYkOWeAMEgbTclzJ w0Q5ZsNh5TBA== X-IronPort-AV: E=McAfee;i="6000,8403,9911"; a="183768262" X-IronPort-AV: E=Sophos;i="5.81,219,1610438400"; d="scan'208";a="183768262" Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Mar 2021 01:16:57 -0800 IronPort-SDR: X7GnzVR7l94NygCRBXx3DEslwh+5xN3BNprdvyowD8nBcrufaFrfoyQQJ/nltU78wtpG5AT7ll 3ZpQmuan/k/Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.81,219,1610438400"; d="scan'208";a="600075825" Received: from black.fi.intel.com ([10.237.72.28]) by fmsmga005.fm.intel.com with ESMTP; 03 Mar 2021 01:16:54 -0800 Received: by black.fi.intel.com (Postfix, from userid 1003) id 8FBC513A; Wed, 3 Mar 2021 11:16:54 +0200 (EET) From: Andy Shevchenko To: Andy Shevchenko , Mark Brown , Sudip Mukherjee , Mauro Carvalho Chehab , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman Subject: [PATCH v3 1/3] parport: Introduce module_parport_driver() helper macro Date: Wed, 3 Mar 2021 11:16:40 +0200 Message-Id: <20210303091642.23929-2-andriy.shevchenko@linux.intel.com> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210303091642.23929-1-andriy.shevchenko@linux.intel.com> References: <20210303091642.23929-1-andriy.shevchenko@linux.intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Introduce module_parport_driver() helper macro to reduce boilerplate in the existing and new code. Signed-off-by: Andy Shevchenko Acked-by: Sudip Mukherjee Reviewed-by: Greg Kroah-Hartman --- include/linux/parport.h | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/include/linux/parport.h b/include/linux/parport.h index f981f794c850..1c16ffb8b908 100644 --- a/include/linux/parport.h +++ b/include/linux/parport.h @@ -332,9 +332,19 @@ int __must_check __parport_register_driver(struct parport_driver *, __parport_register_driver(driver, THIS_MODULE, KBUILD_MODNAME) /* Unregister a high-level driver. */ -extern void parport_unregister_driver (struct parport_driver *); void parport_unregister_driver(struct parport_driver *); +/** + * module_parport_driver() - Helper macro for registering a modular parport driver + * @__parport_driver: struct parport_driver to be used + * + * Helper macro for parport drivers which do not do anything special in module + * init and exit. This eliminates a lot of boilerplate. Each module may only + * use this macro once, and calling it replaces module_init() and module_exit(). + */ +#define module_parport_driver(__parport_driver) \ + module_driver(__parport_driver, parport_register_driver, parport_unregister_driver) + /* If parport_register_driver doesn't fit your needs, perhaps * parport_find_xxx does. */ extern struct parport *parport_find_number (int);