From patchwork Mon Jul 19 14:52:38 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 480758 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=-20.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, 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 B389DC65BB0 for ; Mon, 19 Jul 2021 16:07:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A9EAF61248 for ; Mon, 19 Jul 2021 16:07:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346423AbhGSPZc (ORCPT ); Mon, 19 Jul 2021 11:25:32 -0400 Received: from mail.kernel.org ([198.145.29.99]:57792 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345966AbhGSPQx (ORCPT ); Mon, 19 Jul 2021 11:16:53 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 11A4B6127C; Mon, 19 Jul 2021 15:57:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1626710228; bh=5s5W2nW/VJwzeHHfStZ6DKDgBTQn+P3DbBHGlW+c7Jc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jkXMqHIwRrlslxuWTlImg6OZ7kDhDyzGR2ICE4ZeWlSW5hypJvKXdysPvbwVO86Tx zchAEG2AqDGThXjyP0Abqy9R3OPG+eg3EZxN8QjgwJi1SOWDFRWFwnScwlKLY2yqCv RMz4lcMQiKZFLQl4DP9Py1opm5SlSRcv5V+fp2OY= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Siddharth Gupta , Bjorn Andersson , Sasha Levin Subject: [PATCH 5.10 129/243] remoteproc: core: Fix cdev remove and rproc del Date: Mon, 19 Jul 2021 16:52:38 +0200 Message-Id: <20210719144945.082764029@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210719144940.904087935@linuxfoundation.org> References: <20210719144940.904087935@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Siddharth Gupta [ Upstream commit 930eec0be20c93a53160c74005a1485a230e6911 ] The rproc_char_device_remove() call currently unmaps the cdev region instead of simply deleting the cdev that was added as a part of the rproc_char_device_add() call. This change fixes that behaviour, and also fixes the order in which device_del() and cdev_del() need to be called. Signed-off-by: Siddharth Gupta Link: https://lore.kernel.org/r/1623723671-5517-4-git-send-email-sidgup@codeaurora.org Signed-off-by: Bjorn Andersson Signed-off-by: Sasha Levin --- drivers/remoteproc/remoteproc_cdev.c | 2 +- drivers/remoteproc/remoteproc_core.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/remoteproc/remoteproc_cdev.c b/drivers/remoteproc/remoteproc_cdev.c index b19ea3057bde..ff92ed25d8b0 100644 --- a/drivers/remoteproc/remoteproc_cdev.c +++ b/drivers/remoteproc/remoteproc_cdev.c @@ -111,7 +111,7 @@ int rproc_char_device_add(struct rproc *rproc) void rproc_char_device_remove(struct rproc *rproc) { - __unregister_chrdev(MAJOR(rproc->dev.devt), rproc->index, 1, "remoteproc"); + cdev_del(&rproc->cdev); } void __init rproc_init_cdev(void) diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c index dab2c0f5caf0..47924d5ed4f5 100644 --- a/drivers/remoteproc/remoteproc_core.c +++ b/drivers/remoteproc/remoteproc_core.c @@ -2290,7 +2290,6 @@ int rproc_del(struct rproc *rproc) mutex_unlock(&rproc->lock); rproc_delete_debug_dir(rproc); - rproc_char_device_remove(rproc); /* the rproc is downref'ed as soon as it's removed from the klist */ mutex_lock(&rproc_list_mutex); @@ -2301,6 +2300,7 @@ int rproc_del(struct rproc *rproc) synchronize_rcu(); device_del(&rproc->dev); + rproc_char_device_remove(rproc); return 0; }