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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 E17B7C76188 for ; Fri, 19 Jul 2019 04:08:31 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B22C5218A4 for ; Fri, 19 Jul 2019 04:08:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563509311; bh=d3e4tqvNiIM0DHagGPl0Sq0p/6aSS+We4bM12lQE+Fs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=y7DP5NRii1VPVu/W25xEgW6fKn4EynsUL+vJzsYySDvuJH47aLnESNzH0ROnpCNsP 5xPkikzc3UdyWaa2mJuVoGeXGen6eTg4PpK6s54EFOBtclKk1Q8y1EYYtpy6uBBpvp Yj01oYmtqyFo86mLIMrwMHzbe4T9pvjkBQpK8EWI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1733112AbfGSEIa (ORCPT ); Fri, 19 Jul 2019 00:08:30 -0400 Received: from mail.kernel.org ([198.145.29.99]:42628 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733029AbfGSEIV (ORCPT ); Fri, 19 Jul 2019 00:08:21 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8F09021880; Fri, 19 Jul 2019 04:08:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1563509300; bh=d3e4tqvNiIM0DHagGPl0Sq0p/6aSS+We4bM12lQE+Fs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Lh41Agavwb44jt3CXAUMuEKl86LVl81H1aGy4vV1RFitdoqg7L++cKTB0fuNUiVVo PZbUG4mHVQtaDnuBEegyMZ9s/XiIh08nSQgcs0Nwx1TBYsI1/SHQ99qvlU1GJ0q9nt 6uzFKcv7niG+FJOOaeQY69WjRu7RNuwf6EtduU60= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Kefeng Wang , Hulk Robot , Baruch Siach , Greg Kroah-Hartman , Sasha Levin , linux-serial@vger.kernel.org Subject: [PATCH AUTOSEL 4.19 023/101] tty/serial: digicolor: Fix digicolor-usart already registered warning Date: Fri, 19 Jul 2019 00:06:14 -0400 Message-Id: <20190719040732.17285-23-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190719040732.17285-1-sashal@kernel.org> References: <20190719040732.17285-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Kefeng Wang [ Upstream commit c7ad9ba0611c53cfe194223db02e3bca015f0674 ] When modprobe/rmmod/modprobe module, if platform_driver_register() fails, the kernel complained, proc_dir_entry 'driver/digicolor-usart' already registered WARNING: CPU: 1 PID: 5636 at fs/proc/generic.c:360 proc_register+0x19d/0x270 Fix this by adding uart_unregister_driver() when platform_driver_register() fails. Reported-by: Hulk Robot Signed-off-by: Kefeng Wang Acked-by: Baruch Siach Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/digicolor-usart.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/tty/serial/digicolor-usart.c b/drivers/tty/serial/digicolor-usart.c index f460cca139e2..13ac36e2da4f 100644 --- a/drivers/tty/serial/digicolor-usart.c +++ b/drivers/tty/serial/digicolor-usart.c @@ -541,7 +541,11 @@ static int __init digicolor_uart_init(void) if (ret) return ret; - return platform_driver_register(&digicolor_uart_platform); + ret = platform_driver_register(&digicolor_uart_platform); + if (ret) + uart_unregister_driver(&digicolor_uart); + + return ret; } module_init(digicolor_uart_init); -- 2.20.1