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 A341AC49ED7 for ; Thu, 19 Sep 2019 22:23:42 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 765F9217D6 for ; Thu, 19 Sep 2019 22:23:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568931822; bh=PR52xkbux8D/o0y0jOqLn/nJhGP7n4QdaZlmgyNHkAU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=cLCejNXze0LiyANlxATP/9Pv1V9fG2MEt+yUp/T1WweY56uzq2izGCX1XKwjR8Gc+ EaayPBtEBGhI4dwNsQFxNjqzE6H/qmu5lrGES0sHBJd4MCcRl8jRmrMUQwYmQVyLbY xxH+enmEeoiEcdVvka1PdVQpBiEKmoSHjhWqj1U8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407027AbfISWXl (ORCPT ); Thu, 19 Sep 2019 18:23:41 -0400 Received: from mail.kernel.org ([198.145.29.99]:39446 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2404833AbfISWXj (ORCPT ); Thu, 19 Sep 2019 18:23:39 -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 2D940217D6; Thu, 19 Sep 2019 22:23:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568931818; bh=PR52xkbux8D/o0y0jOqLn/nJhGP7n4QdaZlmgyNHkAU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yD/UFC7OHrgbUsIBKdTu+sg8p3bNwTERIv5D4OJbphlNinp2n3ZhEmX0GBMM0tVkl 7LRKKIq93CssPOJyY7OsGdqI2ZGphoaZBZ7voqS+xCXHR3nH9EEhGklpPWBckKLBrt koIJg+8SqMXNQ9iWkQqanjL6ATfqZCPYZ8zKqUJo= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Razvan Stefanescu Subject: [PATCH 4.4 33/56] tty/serial: atmel: reschedule TX after RX was started Date: Fri, 20 Sep 2019 00:04:14 +0200 Message-Id: <20190919214757.680401739@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190919214742.483643642@linuxfoundation.org> References: <20190919214742.483643642@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 @@ -1275,7 +1275,6 @@ atmel_handle_transmit(struct uart_port * atmel_port->hd_start_rx = false; atmel_start_rx(port); - return; } tasklet_schedule(&atmel_port->tasklet);