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=-9.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,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 8A4C5C43381 for ; Mon, 4 Mar 2019 08:25:55 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4EE2F20823 for ; Mon, 4 Mar 2019 08:25:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551687955; bh=z7/oIA+oc85H9Un7Ux87YGdoK15qKCpNzAtu4ycSFCo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Kp8cypassvbS1arBSyX1srJQ4wyaa2kZjjRTxje3cdGiycTT2Hgg3ibkp69FP8a4m zfBp6cBoEYTxkMeF+HSuVrx7P1jHaHGaS+BulNR2TQBvZAl1xp7OpFpkGkbp9TbsOf RFmCT61vuK5BVC32w1yhlbND4qR8HZosZXBjQRts= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726994AbfCDIZX (ORCPT ); Mon, 4 Mar 2019 03:25:23 -0500 Received: from mail.kernel.org ([198.145.29.99]:44898 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726998AbfCDIZU (ORCPT ); Mon, 4 Mar 2019 03:25:20 -0500 Received: from localhost (5356596B.cm-6-7b.dynamic.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 991DD20863; Mon, 4 Mar 2019 08:25:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551687919; bh=z7/oIA+oc85H9Un7Ux87YGdoK15qKCpNzAtu4ycSFCo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ezp0aRBBp4dBA2ig5dwbhVc2WHBYOu5S2U2ksgjYx1tFcfIHlx0ninC+sMpWciASN VdSnxI6VbaM3TUI8oRyKGuV5Oh0CWHC3dzF7xf9O8XJTbp7PmrQa6deT25A7U50o8Q UKkKvKf66squ0FVE6ulB4GVnht7G6qnvJRmFk8cU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tomonori Sakita , Atsushi Nemoto , Sasha Levin Subject: [PATCH 4.14 29/52] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Date: Mon, 4 Mar 2019 09:22:27 +0100 Message-Id: <20190304081618.862295986@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190304081617.159014799@linuxfoundation.org> References: <20190304081617.159014799@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ [ Upstream commit 815d835b7ba46685c316b000013367dacb2b461b ] Using over-sampling ratio, lpuart can accept baud rate upto uartclk / 4. Signed-off-by: Tomonori Sakita Signed-off-by: Atsushi Nemoto Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/fsl_lpuart.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c index 716c33b2a11cb..32a473f9d1d38 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1701,7 +1701,7 @@ lpuart32_set_termios(struct uart_port *port, struct ktermios *termios, } /* ask the core to calculate the divisor */ - baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 16); + baud = uart_get_baud_rate(port, termios, old, 50, port->uartclk / 4); spin_lock_irqsave(&sport->port.lock, flags); -- 2.19.1