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 DFA1DC3A5A6 for ; Thu, 19 Sep 2019 22:07:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B04DE21929 for ; Thu, 19 Sep 2019 22:07:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568930822; bh=i59vVpsWme0l4E3I1ANgSvilDUw/eEg/54eOPwkejZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ZtbA/Vb2Pype3DP+nOEfbhmnVASgVkEtfzU3u8UzhUAILUoLkZPIs5WFCWKl55a6k CApOMQErjp0ANkg/UJyStSx1EB1hCz39NjrlQjI44ffqDUtbCiLs1J89qwQj+64hs+ 1zokn3/LN8TTMNSfRsuEUL5v6rGrFAb3aKF5fCLA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2393122AbfISWHC (ORCPT ); Thu, 19 Sep 2019 18:07:02 -0400 Received: from mail.kernel.org ([198.145.29.99]:44522 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2393100AbfISWG5 (ORCPT ); Thu, 19 Sep 2019 18:06:57 -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 541A821920; Thu, 19 Sep 2019 22:06:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568930816; bh=i59vVpsWme0l4E3I1ANgSvilDUw/eEg/54eOPwkejZA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=rsqHmEQ8sUxyvnZt0xROt9Zu5uggbtE0uuORQf8qDZFZN+DoQeXTnBRpSB6m6VEcb PR+9SfgBB5fjNhTNbA3G1lJ2QQelbw7tYLRoaU9DsJknquzpnMcNyjyFTfroFJJXe3 rS/Bih3d5ngPCj2stvOOC4cLH8EPjX4LMgmgisQM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Razvan Stefanescu Subject: [PATCH 5.2 024/124] tty/serial: atmel: reschedule TX after RX was started Date: Fri, 20 Sep 2019 00:01:52 +0200 Message-Id: <20190919214819.942328981@linuxfoundation.org> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20190919214819.198419517@linuxfoundation.org> References: <20190919214819.198419517@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);