From mboxrd@z Thu Jan 1 00:00:00 1970 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=-17.3 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 316C9C433E0 for ; Thu, 4 Mar 2021 00:50:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0D8BB64F7F for ; Thu, 4 Mar 2021 00:50:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232118AbhCDAtz (ORCPT ); Wed, 3 Mar 2021 19:49:55 -0500 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:9234 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1359814AbhCCPAe (ORCPT ); Wed, 3 Mar 2021 10:00:34 -0500 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 123Ew12m007034; Wed, 3 Mar 2021 15:59:36 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h=subject : to : cc : references : from : message-id : date : mime-version : in-reply-to : content-type : content-transfer-encoding; s=selector1; bh=92T9jk1GqeaNdUj7VE7tM3zOJWrXiP55EaybpQYEma8=; b=s0XgAapWiw5d6J7WEhcn1yGiHWcuz0Bu8HSk+cZ8l3krhN/mfT1OmcGuWU7WbjW5rb/C 9Il390mWfMpeuqGGK5rwG9hsDfaeuTRdqX+MwzJyQMgdeh3mVAsMhhHRvzbVakwO2qBu q1dtdkxrX71cawrRikhila1rAp6Kb/aB3CA+CdeEVC9y0RgOVtz+z2BdhNqBe8bWPU6t JtLJerTRMhGfj4sZwr+Dk1AbgltSKibZH13W1ZfbR+wlr9efeRg4uYy6Ekv/BDyMa34x T3yhAOuINmG4x7vYKRiT3jWIFjw4widG8ciH48H/T0Lcu/RAyGTkjlz9wVj+0FctWoir XQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 36yfdy9h74-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 03 Mar 2021 15:59:36 +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 A039110002A; Wed, 3 Mar 2021 15:59:35 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag2node3.st.com [10.75.127.6]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 92B0B244F58; Wed, 3 Mar 2021 15:59:35 +0100 (CET) Received: from lmecxl0889.lme.st.com (10.75.127.46) by SFHDAG2NODE3.st.com (10.75.127.6) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 3 Mar 2021 15:59:34 +0100 Subject: Re: [PATCH v5 06/16] rpmsg: move the rpmsg control device from rpmsg_char to rpmsg_ctrl To: Mathieu Poirier CC: Bjorn Andersson , Ohad Ben-Cohen , Andy Gross , , , , References: <20210219111501.14261-1-arnaud.pouliquen@foss.st.com> <20210219111501.14261-7-arnaud.pouliquen@foss.st.com> <20210302183516.GC3791957@xps15> From: Arnaud POULIQUEN Message-ID: <64760ba3-5b23-bf74-6961-b77813919abc@foss.st.com> Date: Wed, 3 Mar 2021 15:59:34 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20210302183516.GC3791957@xps15> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.75.127.46] X-ClientProxiedBy: SFHDAG3NODE1.st.com (10.75.127.7) To SFHDAG2NODE3.st.com (10.75.127.6) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.369,18.0.761 definitions=2021-03-03_04:2021-03-03,2021-03-03 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org On 3/2/21 7:35 PM, Mathieu Poirier wrote: > On Fri, Feb 19, 2021 at 12:14:51PM +0100, Arnaud Pouliquen wrote: >> Move the code related to the rpmsg_ctrl char device to the new >> rpmsg_ctrl.c module. >> Manage the dependency in the kconfig. >> >> Signed-off-by: Arnaud Pouliquen >> --- >> drivers/rpmsg/Kconfig | 9 ++ >> drivers/rpmsg/Makefile | 1 + >> drivers/rpmsg/rpmsg_char.c | 163 ---------------------------- >> drivers/rpmsg/rpmsg_ctrl.c | 216 +++++++++++++++++++++++++++++++++++++ >> 4 files changed, 226 insertions(+), 163 deletions(-) >> create mode 100644 drivers/rpmsg/rpmsg_ctrl.c >> >> diff --git a/drivers/rpmsg/Kconfig b/drivers/rpmsg/Kconfig >> index 0b4407abdf13..2d0cd7fdd710 100644 >> --- a/drivers/rpmsg/Kconfig >> +++ b/drivers/rpmsg/Kconfig >> @@ -10,11 +10,20 @@ config RPMSG_CHAR >> tristate "RPMSG device interface" >> depends on RPMSG >> depends on NET >> + select RPMSG_CTRL >> help >> Say Y here to export rpmsg endpoints as device files, usually found >> in /dev. They make it possible for user-space programs to send and >> receive rpmsg packets. >> >> +config RPMSG_CTRL >> + tristate "RPMSG control interface" >> + depends on RPMSG >> + help >> + Say Y here to enable the support of the /dev/rpmsg_ctlX API. This API > > s/rpmsg_ctlX/rpmsg_ctrlX Good catch! > >> + allows user-space programs to create endpoints with specific service name, >> + source and destination addresses. >> + >> config RPMSG_NS >> tristate "RPMSG name service announcement" >> depends on RPMSG >> diff --git a/drivers/rpmsg/Makefile b/drivers/rpmsg/Makefile >> index 8d452656f0ee..58e3b382e316 100644 >> --- a/drivers/rpmsg/Makefile >> +++ b/drivers/rpmsg/Makefile >> @@ -1,6 +1,7 @@ >> # SPDX-License-Identifier: GPL-2.0 >> obj-$(CONFIG_RPMSG) += rpmsg_core.o >> obj-$(CONFIG_RPMSG_CHAR) += rpmsg_char.o >> +obj-$(CONFIG_RPMSG_CTRL) += rpmsg_ctrl.o >> obj-$(CONFIG_RPMSG_NS) += rpmsg_ns.o >> obj-$(CONFIG_RPMSG_MTK_SCP) += mtk_rpmsg.o >> qcom_glink-objs := qcom_glink_native.o qcom_glink_ssr.o >> diff --git a/drivers/rpmsg/rpmsg_char.c b/drivers/rpmsg/rpmsg_char.c >> index 23e369a00531..83c10b39b139 100644 >> --- a/drivers/rpmsg/rpmsg_char.c >> +++ b/drivers/rpmsg/rpmsg_char.c >> @@ -31,28 +31,12 @@ >> static dev_t rpmsg_major; >> static struct class *rpmsg_class; >> >> -static DEFINE_IDA(rpmsg_ctrl_ida); >> static DEFINE_IDA(rpmsg_ept_ida); >> static DEFINE_IDA(rpmsg_minor_ida); >> >> #define dev_to_eptdev(dev) container_of(dev, struct rpmsg_eptdev, dev) >> #define cdev_to_eptdev(i_cdev) container_of(i_cdev, struct rpmsg_eptdev, cdev) >> >> -#define dev_to_ctrldev(dev) container_of(dev, struct rpmsg_ctrldev, dev) >> -#define cdev_to_ctrldev(i_cdev) container_of(i_cdev, struct rpmsg_ctrldev, cdev) >> - >> -/** >> - * struct rpmsg_ctrldev - control device for instantiating endpoint devices >> - * @rpdev: underlaying rpmsg device >> - * @cdev: cdev for the ctrl device >> - * @dev: device for the ctrl device >> - */ >> -struct rpmsg_ctrldev { >> - struct rpmsg_device *rpdev; >> - struct cdev cdev; >> - struct device dev; >> -}; > > This showed up in rpmsg_ctrl.c as rpmsg_ctrl. The same goes for many functions > names - they are removed here and re-introduced under a different name, which > makes it very hard to follow. What ends up in the new file should be a carbon > copy of what was moved. Ok i will split it in 2 steps. Thanks Arnaud > > I'm out of time for today, more comments tomorrow. > > Thanks, > Mathieu > >> - >> /** >> * struct rpmsg_eptdev - endpoint device context >> * @dev: endpoint device >> @@ -411,145 +395,6 @@ int rpmsg_chrdev_create_eptdev(struct rpmsg_device *rpdev, struct device *parent >> } >> EXPORT_SYMBOL(rpmsg_chrdev_create_eptdev); >> >> -static int rpmsg_ctrldev_open(struct inode *inode, struct file *filp) >> -{ >> - struct rpmsg_ctrldev *ctrldev = cdev_to_ctrldev(inode->i_cdev); >> - >> - get_device(&ctrldev->dev); >> - filp->private_data = ctrldev; >> - >> - return 0; >> -} >> - >> -static int rpmsg_ctrldev_release(struct inode *inode, struct file *filp) >> -{ >> - struct rpmsg_ctrldev *ctrldev = cdev_to_ctrldev(inode->i_cdev); >> - >> - put_device(&ctrldev->dev); >> - >> - return 0; >> -} >> - >> -static long rpmsg_ctrldev_ioctl(struct file *fp, unsigned int cmd, >> - unsigned long arg) >> -{ >> - struct rpmsg_ctrldev *ctrldev = fp->private_data; >> - void __user *argp = (void __user *)arg; >> - struct rpmsg_endpoint_info eptinfo; >> - struct rpmsg_channel_info chinfo; >> - >> - if (cmd != RPMSG_CREATE_EPT_IOCTL) >> - return -EINVAL; >> - >> - if (copy_from_user(&eptinfo, argp, sizeof(eptinfo))) >> - return -EFAULT; >> - >> - memcpy(chinfo.name, eptinfo.name, RPMSG_NAME_SIZE); >> - chinfo.name[RPMSG_NAME_SIZE-1] = '\0'; >> - chinfo.src = eptinfo.src; >> - chinfo.dst = eptinfo.dst; >> - >> - return rpmsg_chrdev_create_eptdev(ctrldev->rpdev, &ctrldev->dev, chinfo); >> -}; >> - >> -static const struct file_operations rpmsg_ctrldev_fops = { >> - .owner = THIS_MODULE, >> - .open = rpmsg_ctrldev_open, >> - .release = rpmsg_ctrldev_release, >> - .unlocked_ioctl = rpmsg_ctrldev_ioctl, >> - .compat_ioctl = compat_ptr_ioctl, >> -}; >> - >> -static void rpmsg_ctrldev_release_device(struct device *dev) >> -{ >> - struct rpmsg_ctrldev *ctrldev = dev_to_ctrldev(dev); >> - >> - ida_simple_remove(&rpmsg_ctrl_ida, dev->id); >> - ida_simple_remove(&rpmsg_minor_ida, MINOR(dev->devt)); >> - cdev_del(&ctrldev->cdev); >> - kfree(ctrldev); >> -} >> - >> -static int rpmsg_chrdev_probe(struct rpmsg_device *rpdev) >> -{ >> - struct rpmsg_ctrldev *ctrldev; >> - struct device *dev; >> - int ret; >> - >> - ctrldev = kzalloc(sizeof(*ctrldev), GFP_KERNEL); >> - if (!ctrldev) >> - return -ENOMEM; >> - >> - ctrldev->rpdev = rpdev; >> - >> - dev = &ctrldev->dev; >> - device_initialize(dev); >> - dev->parent = &rpdev->dev; >> - >> - cdev_init(&ctrldev->cdev, &rpmsg_ctrldev_fops); >> - ctrldev->cdev.owner = THIS_MODULE; >> - >> - ret = ida_simple_get(&rpmsg_minor_ida, 0, RPMSG_DEV_MAX, GFP_KERNEL); >> - if (ret < 0) >> - goto free_ctrldev; >> - dev->devt = MKDEV(MAJOR(rpmsg_major), ret); >> - >> - ret = ida_simple_get(&rpmsg_ctrl_ida, 0, 0, GFP_KERNEL); >> - if (ret < 0) >> - goto free_minor_ida; >> - dev->id = ret; >> - dev_set_name(&ctrldev->dev, "rpmsg_ctrl%d", ret); >> - >> - ret = cdev_add(&ctrldev->cdev, dev->devt, 1); >> - if (ret) >> - goto free_ctrl_ida; >> - >> - /* We can now rely on the release function for cleanup */ >> - dev->release = rpmsg_ctrldev_release_device; >> - >> - ret = device_add(dev); >> - if (ret) { >> - dev_err(&rpdev->dev, "device_add failed: %d\n", ret); >> - put_device(dev); >> - } >> - >> - dev_set_drvdata(&rpdev->dev, ctrldev); >> - >> - return ret; >> - >> -free_ctrl_ida: >> - ida_simple_remove(&rpmsg_ctrl_ida, dev->id); >> -free_minor_ida: >> - ida_simple_remove(&rpmsg_minor_ida, MINOR(dev->devt)); >> -free_ctrldev: >> - put_device(dev); >> - kfree(ctrldev); >> - >> - return ret; >> -} >> - >> -static void rpmsg_chrdev_remove(struct rpmsg_device *rpdev) >> -{ >> - struct rpmsg_ctrldev *ctrldev = dev_get_drvdata(&rpdev->dev); >> - int ret; >> - >> - /* Destroy all endpoints */ >> - ret = device_for_each_child(&ctrldev->dev, NULL, rpmsg_chrdev_eptdev_destroy); >> - if (ret) >> - dev_warn(&rpdev->dev, "failed to nuke endpoints: %d\n", ret); >> - >> - device_del(&ctrldev->dev); >> - put_device(&ctrldev->dev); >> -} >> - >> -static struct rpmsg_driver rpmsg_chrdev_driver = { >> - .probe = rpmsg_chrdev_probe, >> - .remove = rpmsg_chrdev_remove, >> - .drv = { >> - .name = "rpmsg_chrdev", >> - }, >> -}; >> - >> static int rpmsg_chrdev_init(void) >> { >> int ret; >> @@ -567,20 +412,12 @@ static int rpmsg_chrdev_init(void) >> return PTR_ERR(rpmsg_class); >> } >> >> - ret = register_rpmsg_driver(&rpmsg_chrdev_driver); >> - if (ret < 0) { >> - pr_err("rpmsgchr: failed to register rpmsg driver\n"); >> - class_destroy(rpmsg_class); >> - unregister_chrdev_region(rpmsg_major, RPMSG_DEV_MAX); >> - } >> - >> return ret; >> } >> postcore_initcall(rpmsg_chrdev_init); >> >> static void rpmsg_chrdev_exit(void) >> { >> - unregister_rpmsg_driver(&rpmsg_chrdev_driver); >> class_destroy(rpmsg_class); >> unregister_chrdev_region(rpmsg_major, RPMSG_DEV_MAX); >> } >> diff --git a/drivers/rpmsg/rpmsg_ctrl.c b/drivers/rpmsg/rpmsg_ctrl.c >> new file mode 100644 >> index 000000000000..fa05b67d24da >> --- /dev/null >> +++ b/drivers/rpmsg/rpmsg_ctrl.c >> @@ -0,0 +1,216 @@ >> +// SPDX-License-Identifier: GPL-2.0 >> +/* >> + * Copyright (C) 2021, STMicroelectronics >> + * Copyright (c) 2016, Linaro Ltd. >> + * Copyright (c) 2012, Michal Simek >> + * Copyright (c) 2012, PetaLogix >> + * Copyright (c) 2011, Texas Instruments, Inc. >> + * Copyright (c) 2011, Google, Inc. >> + * >> + * Based on rpmsg performance statistics driver by Michal Simek, which in turn >> + * was based on TI & Google OMX rpmsg driver. >> + */ >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> + >> +#include "rpmsg_char.h" >> +#include "rpmsg_internal.h" >> + >> +#define RPMSG_DEV_MAX (MINORMASK + 1) >> + >> +static dev_t rpmsg_major; >> + >> +static DEFINE_IDA(rpmsg_ctrl_ida); >> +static DEFINE_IDA(rpmsg_minor_ida); >> + >> +#define dev_to_ctrldev(dev) container_of(dev, struct rpmsg_ctrl, dev) >> +#define cdev_to_ctrldev(i_cdev) container_of(i_cdev, struct rpmsg_ctrl, cdev) >> + >> +/** >> + * struct rpmsg_ctrl - control device for instantiating endpoint devices >> + * @rpdev: underlaying rpmsg device >> + * @cdev: cdev for the ctrl device >> + * @dev: device for the ctrl device >> + */ >> +struct rpmsg_ctrl { >> + struct rpmsg_device *rpdev; >> + struct cdev cdev; >> + struct device dev; >> +}; >> + >> +static int rpmsg_ctrl_open(struct inode *inode, struct file *filp) >> +{ >> + struct rpmsg_ctrl *ctrldev = cdev_to_ctrldev(inode->i_cdev); >> + >> + get_device(&ctrldev->dev); >> + filp->private_data = ctrldev; >> + >> + return 0; >> +} >> + >> +static int rpmsg_ctrl_release(struct inode *inode, struct file *filp) >> +{ >> + struct rpmsg_ctrl *ctrldev = cdev_to_ctrldev(inode->i_cdev); >> + >> + put_device(&ctrldev->dev); >> + >> + return 0; >> +} >> + >> +static long rpmsg_ctrl_ioctl(struct file *fp, unsigned int cmd, unsigned long arg) >> +{ >> + struct rpmsg_ctrl *ctrldev = fp->private_data; >> + void __user *argp = (void __user *)arg; >> + struct rpmsg_endpoint_info eptinfo; >> + struct rpmsg_channel_info chinfo; >> + >> + if (cmd != RPMSG_CREATE_EPT_IOCTL) >> + return -EINVAL; >> + >> + if (copy_from_user(&eptinfo, argp, sizeof(eptinfo))) >> + return -EFAULT; >> + >> + memcpy(chinfo.name, eptinfo.name, RPMSG_NAME_SIZE); >> + chinfo.name[RPMSG_NAME_SIZE - 1] = '\0'; >> + chinfo.src = eptinfo.src; >> + chinfo.dst = eptinfo.dst; >> + >> + return rpmsg_chrdev_create_eptdev(ctrldev->rpdev, &ctrldev->dev, chinfo); >> +}; >> + >> +static const struct file_operations rpmsg_ctrl_fops = { >> + .owner = THIS_MODULE, >> + .open = rpmsg_ctrl_open, >> + .release = rpmsg_ctrl_release, >> + .unlocked_ioctl = rpmsg_ctrl_ioctl, >> + .compat_ioctl = compat_ptr_ioctl, >> +}; >> + >> +static void rpmsg_ctrl_release_device(struct device *dev) >> +{ >> + struct rpmsg_ctrl *ctrldev = dev_to_ctrldev(dev); >> + >> + ida_simple_remove(&rpmsg_ctrl_ida, dev->id); >> + ida_simple_remove(&rpmsg_minor_ida, MINOR(dev->devt)); >> + cdev_del(&ctrldev->cdev); >> + kfree(ctrldev); >> +} >> + >> +static int rpmsg_ctrl_probe(struct rpmsg_device *rpdev) >> +{ >> + struct rpmsg_ctrl *ctrldev; >> + struct device *dev; >> + int ret; >> + >> + ctrldev = kzalloc(sizeof(*ctrldev), GFP_KERNEL); >> + if (!ctrldev) >> + return -ENOMEM; >> + >> + ctrldev->rpdev = rpdev; >> + >> + dev = &ctrldev->dev; >> + device_initialize(dev); >> + dev->parent = &rpdev->dev; >> + >> + cdev_init(&ctrldev->cdev, &rpmsg_ctrl_fops); >> + ctrldev->cdev.owner = THIS_MODULE; >> + >> + ret = ida_simple_get(&rpmsg_minor_ida, 0, RPMSG_DEV_MAX, GFP_KERNEL); >> + if (ret < 0) >> + goto free_ctrldev; >> + dev->devt = MKDEV(MAJOR(rpmsg_major), ret); >> + >> + ret = ida_simple_get(&rpmsg_ctrl_ida, 0, 0, GFP_KERNEL); >> + if (ret < 0) >> + goto free_minor_ida; >> + dev->id = ret; >> + dev_set_name(&ctrldev->dev, "rpmsg_ctrl%d", ret); >> + >> + ret = cdev_add(&ctrldev->cdev, dev->devt, 1); >> + if (ret) >> + goto free_ctrl_ida; >> + >> + /* We can now rely on the release function for cleanup */ >> + dev->release = rpmsg_ctrl_release_device; >> + >> + ret = device_add(dev); >> + if (ret) { >> + dev_err(&rpdev->dev, "device_add failed: %d\n", ret); >> + put_device(dev); >> + } >> + >> + dev_set_drvdata(&rpdev->dev, ctrldev); >> + >> + return ret; >> + >> +free_ctrl_ida: >> + ida_simple_remove(&rpmsg_ctrl_ida, dev->id); >> +free_minor_ida: >> + ida_simple_remove(&rpmsg_minor_ida, MINOR(dev->devt)); >> +free_ctrldev: >> + put_device(dev); >> + kfree(ctrldev); >> + >> + return ret; >> +} >> + >> +static void rpmsg_ctrl_remove(struct rpmsg_device *rpdev) >> +{ >> + struct rpmsg_ctrl *ctrldev = dev_get_drvdata(&rpdev->dev); >> + int ret; >> + >> + /* Destroy all endpoints */ >> + ret = device_for_each_child(&ctrldev->dev, NULL, >> + rpmsg_chrdev_eptdev_destroy); >> + if (ret) >> + dev_warn(&rpdev->dev, "failed to nuke endpoints: %d\n", ret); >> + >> + device_del(&ctrldev->dev); >> + put_device(&ctrldev->dev); >> +} >> + >> +static struct rpmsg_driver rpmsg_ctrl_driver = { >> + .probe = rpmsg_ctrl_probe, >> + .remove = rpmsg_ctrl_remove, >> + .drv = { >> + .name = "rpmsg_chrdev", >> + }, >> +}; >> + >> +static int rpmsg_ctrl_init(void) >> +{ >> + int ret; >> + >> + ret = alloc_chrdev_region(&rpmsg_major, 0, RPMSG_DEV_MAX, "rpmsg"); >> + if (ret < 0) { >> + pr_err("rpmsg: failed to allocate char dev region\n"); >> + return ret; >> + } >> + >> + ret = register_rpmsg_driver(&rpmsg_ctrl_driver); >> + if (ret < 0) { >> + pr_err("rpmsg ctrl: failed to register rpmsg driver\n"); >> + unregister_chrdev_region(rpmsg_major, RPMSG_DEV_MAX); >> + } >> + >> + return ret; >> +} >> +postcore_initcall(rpmsg_ctrl_init); >> + >> +static void rpmsg_ctrl_exit(void) >> +{ >> + unregister_rpmsg_driver(&rpmsg_ctrl_driver); >> + unregister_chrdev_region(rpmsg_major, RPMSG_DEV_MAX); >> +} >> +module_exit(rpmsg_ctrl_exit); >> + >> +MODULE_DESCRIPTION("rpmsg control interface"); >> +MODULE_ALIAS("rpmsg:" KBUILD_MODNAME); >> +MODULE_LICENSE("GPL v2"); >> -- >> 2.17.1 >>