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=unavailable 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 7575BC4CEC4 for ; Thu, 19 Sep 2019 22:30:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 400B720640 for ; Thu, 19 Sep 2019 22:30:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568932243; bh=0+SfaMpsb/mjXk8vRGdMDX1dEeGdzQStvV0C3yCOG64=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=WLK35kZRqW7bcLqPZYov3NAIXYomxp2Dd9SV6yi8LFO3+iqloHJe03k1ZgTz9FZAU GCFyqz0uZ9vZ5nBXb1SZ5hVVX1+Nc0wKkAkFvSxKHjT1CLevwRANK0IwU30CJDyAOv zILHjGOyfLGCSsV1AP146jw08CvwAJaVs3tdXoNI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2406205AbfISWPr (ORCPT ); Thu, 19 Sep 2019 18:15:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:55686 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2406180AbfISWPn (ORCPT ); Thu, 19 Sep 2019 18:15:43 -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 6B87321920; Thu, 19 Sep 2019 22:15:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568931342; bh=0+SfaMpsb/mjXk8vRGdMDX1dEeGdzQStvV0C3yCOG64=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AA5qIXVGFGBjYCPEC8OcuOkx1zWqpo61KU65pZb7rfTLcODHZv3L6MOeRSsN8K223 TJ+seMevYE2+MwBeFC75RnzfATOT1HGhHQqMWQ03gFXsMM3CficqW8R0XyKd/W2p5O 3Hp+doG29++wlwDKMN9xNahGotXefj+TzZV9sxzE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Razvan Stefanescu Subject: [PATCH 4.14 12/59] tty/serial: atmel: reschedule TX after RX was started Date: Fri, 20 Sep 2019 00:03:27 +0200 Message-Id: <20190919214759.354987361@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190919214755.852282682@linuxfoundation.org> References: <20190919214755.852282682@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 @@ -1276,7 +1276,6 @@ 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);