From patchwork Tue Dec 7 08:08:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Arnaud POULIQUEN X-Patchwork-Id: 12661275 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 2E311C433F5 for ; Tue, 7 Dec 2021 08:09:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230107AbhLGIMm (ORCPT ); Tue, 7 Dec 2021 03:12:42 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:42060 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231543AbhLGIMi (ORCPT ); Tue, 7 Dec 2021 03:12:38 -0500 Received: from pps.filterd (m0046661.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.1.2/8.16.1.2) with ESMTP id 1B743N6v019282; Tue, 7 Dec 2021 09:08:59 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type; s=selector1; bh=/8mhOl8RofCa/gcd5Sw/vgwh6rK5f5gsqSHmOrvc1JI=; b=MckttOhNGuy2Mg1eUcGv1aOfd/ptjUQpTiqawFGgQdXFrvMQ0DYumHPnTOXFqrYlQcq7 bizHiXtiuxpU8RH5tS7fPyV9WjzjDrMXfOQxChhyiTzoE/nOrSlETl9Fl1onEocM0rq7 /oXc49qJigQ+iLKM5TpEcZqnPmsOh046aHEYqpXSDvMJWV9KIYl0UqVhUOP78vQXI279 2suNHsxWKPf8fUvQuoVispgGTzeAkLYzezFOeIs93VEhfMSk8LHovom3X4GqQVPKcMzW nAie9vofB/aCjMrCjlma160yH76zwW+jXuj72QGaArGcqxD1l7R6Llf4WRghi9m1eHMY 1w== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 3csp32bc9u-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 07 Dec 2021 09:08:59 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 4ADA110002A; Tue, 7 Dec 2021 09:08:59 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node2.st.com [10.75.127.5]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 432312220B0; Tue, 7 Dec 2021 09:08:59 +0100 (CET) Received: from localhost (10.75.127.50) by SFHDAG2NODE2.st.com (10.75.127.5) with Microsoft SMTP Server (TLS) id 15.0.1497.26; Tue, 7 Dec 2021 09:08:58 +0100 From: Arnaud Pouliquen To: Bjorn Andersson , Mathieu Poirier CC: , , , , Subject: [PATCH v8 08/13] rpmsg: char: Refactor rpmsg_chrdev_eptdev_create function Date: Tue, 7 Dec 2021 09:08:38 +0100 Message-ID: <20211207080843.21222-9-arnaud.pouliquen@foss.st.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211207080843.21222-1-arnaud.pouliquen@foss.st.com> References: <20211207080843.21222-1-arnaud.pouliquen@foss.st.com> MIME-Version: 1.0 X-Originating-IP: [10.75.127.50] X-ClientProxiedBy: SFHDAG2NODE3.st.com (10.75.127.6) To SFHDAG2NODE2.st.com (10.75.127.5) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.790,Hydra:6.0.425,FMLib:17.11.62.513 definitions=2021-12-07_03,2021-12-06_02,2021-12-02_01 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Introduce the rpmsg_chrdev_eptdev_alloc and rpmsg_chrdev_eptdev_add internal function to split the allocation part from the device add. This patch prepares the introduction of a rpmsg channel device for the char device. An default endpoint will be created, referenced in the rpmsg_eptdev structure before adding the devices. Signed-off-by: Arnaud Pouliquen --- drivers/rpmsg/rpmsg_char.c | 33 ++++++++++++++++++++++++++++----- 1 file changed, 28 insertions(+), 5 deletions(-) diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c index fab42964bcbb..a39f19161cd6 100644 --- a/drivers/rpmsg/rpmsg_char.c +++ b/drivers/rpmsg/rpmsg_char.c @@ -328,20 +328,18 @@ static void rpmsg_eptdev_release_device(struct device *dev) kfree(eptdev); } -int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent, - struct rpmsg_channel_info chinfo) +static struct rpmsg_eptdev *rpmsg_chrdev_eptdev_alloc(struct rpmsg_device *rpdev, + struct device *parent) { struct rpmsg_eptdev *eptdev; struct device *dev; - int ret; eptdev = kzalloc(sizeof(*eptdev), GFP_KERNEL); if (!eptdev) - return -ENOMEM; + return ERR_PTR(-ENOMEM); dev = &eptdev->dev; eptdev->rpdev = rpdev; - eptdev->chinfo = chinfo; mutex_init(&eptdev->ept_lock); spin_lock_init(&eptdev->queue_lock); @@ -357,6 +355,16 @@ int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent cdev_init(&eptdev->cdev, &rpmsg_eptdev_fops); eptdev->cdev.owner = THIS_MODULE; + return eptdev; +} + +static int rpmsg_chrdev_eptdev_add(struct rpmsg_eptdev *eptdev, struct rpmsg_channel_info chinfo) +{ + struct device *dev = &eptdev->dev; + int ret; + + eptdev->chinfo = chinfo; + ret = ida_simple_get(&rpmsg_minor_ida, 0, RPMSG_DEV_MAX, GFP_KERNEL); if (ret < 0) goto free_eptdev; @@ -393,6 +401,21 @@ int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent return ret; } + +int rpmsg_chrdev_eptdev_create(struct rpmsg_device *rpdev, struct device *parent, + struct rpmsg_channel_info chinfo) +{ + struct rpmsg_eptdev *eptdev; + int ret; + + eptdev = rpmsg_chrdev_eptdev_alloc(rpdev, parent); + if (IS_ERR(eptdev)) + return PTR_ERR(eptdev); + + ret = rpmsg_chrdev_eptdev_add(eptdev, chinfo); + + return ret; +} EXPORT_SYMBOL(rpmsg_chrdev_eptdev_create); static int rpmsg_chrdev_init(void)