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=-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,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 CC904C49ED7 for ; Thu, 19 Sep 2019 22:05:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 971AB21920 for ; Thu, 19 Sep 2019 22:05:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568930740; bh=i59vVpsWme0l4E3I1ANgSvilDUw/eEg/54eOPwkejZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2h7+7/RUBOT2HNi3x9xahgk6nivWgzpLpTbGHYh2H1oNk1VD+mM18KlQSVBmOrw7G pV4t6yXCK2QG0txsv7HvW1TqYEAF0km5fv6YLY3/yaQ/J8kONoYU5iEb4HEwhcVBRd ZaiYmRUCH8bGxmkPk2upyBe5mf1M5uKrrLGjZXfA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405012AbfISWFj (ORCPT ); Thu, 19 Sep 2019 18:05:39 -0400 Received: from mail.kernel.org ([198.145.29.99]:42650 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404985AbfISWFb (ORCPT ); Thu, 19 Sep 2019 18:05:31 -0400 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 A87A221907; Thu, 19 Sep 2019 22:05:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568930730; bh=i59vVpsWme0l4E3I1ANgSvilDUw/eEg/54eOPwkejZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=hMEgEAjgPHocJXLmCsqeJyQwgTXRTAPcCPHZSSGu0laNzgQfgU1QARw7c0Hhxzs8P IFSVI2zAlIqc6PU3nnKz8va0JM5Nbq+WovX0QphykyM+DlD5Gflr4CQu/W+X1VoJe1 cXfsiw4RXjYk9FBIvNZD6nho1/rtWcvqIvucduyc= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Razvan Stefanescu Subject: [PATCH 5.3 15/21] tty/serial: atmel: reschedule TX after RX was started Date: Fri, 20 Sep 2019 00:03:16 +0200 Message-Id: <20190919214708.783116461@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190919214657.842130855@linuxfoundation.org> References: <20190919214657.842130855@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Razvan Stefanescu commit d2ace81bf902a9f11d52e59e5d232d2255a0e353 upstream. When half-duplex RS485 communication is used, after RX is started, TX tasklet still needs to be scheduled tasklet. This avoids console freezing when more data is to be transmitted, if the serial communication is not closed. Fixes: 69646d7a3689 ("tty/serial: atmel: RS485 HD w/DMA: enable RX after TX is stopped") Signed-off-by: Razvan Stefanescu Cc: stable Link: https://lore.kernel.org/r/20190813074025.16218-1-razvan.stefanescu@microchip.com Signed-off-by: Greg Kroah-Hartman --- drivers/tty/serial/atmel_serial.c | 1 - 1 file changed, 1 deletion(-) --- a/drivers/tty/serial/atmel_serial.c +++ b/drivers/tty/serial/atmel_serial.c @@ -1400,7 +1400,6 @@ atmel_handle_transmit(struct uart_port * atmel_port->hd_start_rx = false; atmel_start_rx(port); - return; } atmel_tasklet_schedule(atmel_port, &atmel_port->tasklet_tx);