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 8DCE9C49ED7 for ; Thu, 19 Sep 2019 22:12:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6386621929 for ; Thu, 19 Sep 2019 22:12:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568931145; bh=wyklw6h7uu0PQ35u5IY/6t8dIFe54hrKDbD3NZ7d8xk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Ht4ksgZmKgwemPkupCJ9hhXeKwD/oTYE7WAb0ItOQh3v2gGoj8te5Aq5xU+++tmM4 OG2BfxGj0juG+fgS1pSCbsHdV7m7npxybRIgJahNOZprq+lx6KcLN9JYoHugR/N6zg ZxKDnJn3MVPSxfLevFAIIMDDdJSucsEPAtm7LUxo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2405985AbfISWMY (ORCPT ); Thu, 19 Sep 2019 18:12:24 -0400 Received: from mail.kernel.org ([198.145.29.99]:51092 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2405944AbfISWMP (ORCPT ); Thu, 19 Sep 2019 18:12:15 -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 B0C1D21920; Thu, 19 Sep 2019 22:12:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568931135; bh=wyklw6h7uu0PQ35u5IY/6t8dIFe54hrKDbD3NZ7d8xk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ulEqGzQsdQXzrGPBOL/dCzxRcRy4DYJrQs7LptGSJtyiwKowabn/9xUMq3ZgB176J 420JznClrJaLeyJF0ftQijjRDTkzawGFWhl5JLnv6Vin5KLDWlemqEGs2fRQAuTrZ3 Z5+q3htdFDC2n+tMU8X4jJMZspp2q01vcU6MHXB8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Razvan Stefanescu Subject: [PATCH 4.19 16/79] tty/serial: atmel: reschedule TX after RX was started Date: Fri, 20 Sep 2019 00:03:01 +0200 Message-Id: <20190919214809.242105899@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190919214807.612593061@linuxfoundation.org> References: <20190919214807.612593061@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 @@ -1270,7 +1270,6 @@ 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);