Message ID | 20200122092806.068924638@linuxfoundation.org |
---|---|
State | New |
Headers | show
Return-Path: <SRS0=TRKd=3L=vger.kernel.org=stable-owner@kernel.org> 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=-6.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 9E031C33CB6 for <stable@archiver.kernel.org>; Wed, 22 Jan 2020 09:35:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 649F824672 for <stable@archiver.kernel.org>; Wed, 22 Jan 2020 09:35:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579685742; bh=lFrp2fT6oAwU0C505gdh33LnzaHuMVacMPBXsfkRemY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=y5oraG5qc3GvQMhVD6xwJkoUr2dDq4MUL8ei7Br+2niBNPCyKxrWtZ8yGxY+EooZc Tis3cdVd/EpaKI94b1JoNBXsDj4eN6SKstUGBv/ADocRw9CSlh90MgviYBhgtw+lhy LW09wmB7qSDfYJtkgzSJwL7GkZkt2roceU2JzIWA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730073AbgAVJfk (ORCPT <rfc822;stable@archiver.kernel.org>); Wed, 22 Jan 2020 04:35:40 -0500 Received: from mail.kernel.org ([198.145.29.99]:50808 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731411AbgAVJfj (ORCPT <rfc822;stable@vger.kernel.org>); Wed, 22 Jan 2020 04:35:39 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 25EF52071E; Wed, 22 Jan 2020 09:35:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1579685738; bh=lFrp2fT6oAwU0C505gdh33LnzaHuMVacMPBXsfkRemY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=oUw57gQI4oaMiHrjbg2EX3UnLVg1OB/WgPBGxbU0gLwNQXnOYbGKhXab8u8QB1JgM qoQ9nBB3NR2YsSwt1MeCtQmTbW6K3Gl2HIMv/QVTaKYeySdbcev/6TKiONB0f7949f uX2O3UVjqXzsT1Umq7Gnm7CGAgIjnmzAmO+UxF3s= From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>, stable@vger.kernel.org, Johan Hovold <johan@kernel.org> Subject: [PATCH 4.9 60/97] USB: serial: ch341: handle unbound port at reset_resume Date: Wed, 22 Jan 2020 10:29:04 +0100 Message-Id: <20200122092806.068924638@linuxfoundation.org> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200122092755.678349497@linuxfoundation.org> References: <20200122092755.678349497@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: <stable.vger.kernel.org> X-Mailing-List: stable@vger.kernel.org |
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--- a/drivers/usb/serial/ch341.c +++ b/drivers/usb/serial/ch341.c @@ -555,9 +555,13 @@ static int ch341_tiocmget(struct tty_str static int ch341_reset_resume(struct usb_serial *serial) { struct usb_serial_port *port = serial->port[0]; - struct ch341_private *priv = usb_get_serial_port_data(port); + struct ch341_private *priv; int ret; + priv = usb_get_serial_port_data(port); + if (!priv) + return 0; + /* reconfigure ch341 serial port after bus-reset */ ch341_configure(serial->dev, priv);