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=-17.0 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=ham 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 A2770C07E96 for ; Thu, 8 Jul 2021 12:20:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7BEC66190A for ; Thu, 8 Jul 2021 12:20:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230495AbhGHMW5 (ORCPT ); Thu, 8 Jul 2021 08:22:57 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:6447 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229533AbhGHMW5 (ORCPT ); Thu, 8 Jul 2021 08:22:57 -0400 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.53]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4GLFdl3xlSz75hM; Thu, 8 Jul 2021 20:16:43 +0800 (CST) Received: from dggpemm500017.china.huawei.com (7.185.36.178) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 8 Jul 2021 20:20:11 +0800 Received: from huawei.com (10.175.104.170) by dggpemm500017.china.huawei.com (7.185.36.178) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Thu, 8 Jul 2021 20:20:11 +0800 From: Wenchao Hao To: Greg Kroah-Hartman , "Rafael J . Wysocki" , CC: , Wu Bo , Zhiqiang Liu , Wenchao Hao Subject: [PATCH] driver core: Make probe_type of driver accessible via sysfs Date: Thu, 8 Jul 2021 20:20:10 +0800 Message-ID: <20210708122010.262510-1-haowenchao@huawei.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.104.170] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To dggpemm500017.china.huawei.com (7.185.36.178) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Like drivers_autoprobe of bus, make probe_type of driver accessible via sysfs, so we can get and set a driver's probe_type happily. Signed-off-by: Wenchao Hao --- drivers/base/bus.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 1f6b4bd61056..e006562cb638 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -583,6 +583,25 @@ static ssize_t uevent_store(struct device_driver *drv, const char *buf, } static DRIVER_ATTR_WO(uevent); +static ssize_t probe_type_show(struct device_driver *drv, char *buf) +{ + return sysfs_emit(buf, "%d\n", drv->probe_type); +} + +static ssize_t probe_type_store(struct device_driver *drv, const char *buf, + size_t count) +{ + if (buf[0] == '0') + drv->probe_type = 0; + else if (buf[0] == '1') + drv->probe_type = 1; + else if (buf[0] == '2') + drv->probe_type = 2; + + return count; +} +static DRIVER_ATTR_RW(probe_type); + /** * bus_add_driver - Add a driver to the bus. * @drv: driver. @@ -626,6 +645,12 @@ int bus_add_driver(struct device_driver *drv) printk(KERN_ERR "%s: uevent attr (%s) failed\n", __func__, drv->name); } + error = driver_create_file(drv, &driver_attr_probe_type); + if (error) { + printk(KERN_ERR "%s: probe_type attr (%s) failed\n", + __func__, drv->name); + } + error = driver_add_groups(drv, bus->drv_groups); if (error) { /* How the hell do we get out of this pickle? Give up */ -- 2.27.0