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,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 3E54BC43381 for ; Mon, 4 Mar 2019 08:39:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 083F320823 for ; Mon, 4 Mar 2019 08:39:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551688768; bh=++K8YRj4aPa7iN0BqUC8ojLvuDVqIeEyHePi6dYUw28=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=Z9QQhWZ3HnpozcU0cELJ4TAIPY+9acjjfiQZN+8pNZIfIoROlu3c/3Fth/+ZAV2pF 1nNxNRUfJ1ckMb+VbqpD6a8hvzkGMFqQSP3O6SJP3wmIPAerp/jb8QvyMgjJxNcqKC uQpBhP37ZfeMD/HeOiWxfzkOhfQT6vETFqSkFhy0= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727250AbfCDIdw (ORCPT ); Mon, 4 Mar 2019 03:33:52 -0500 Received: from mail.kernel.org ([198.145.29.99]:38952 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727426AbfCDIdu (ORCPT ); Mon, 4 Mar 2019 03:33:50 -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 68D4820823; Mon, 4 Mar 2019 08:33:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551688429; bh=++K8YRj4aPa7iN0BqUC8ojLvuDVqIeEyHePi6dYUw28=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EpVz5IQqkZbtCwQUHWgqB7UHbl6ELoWS8t94zHwBO+sKRNzeY/cBe/xQ+LV+DEREo 9WWoXWLp1MMauzxsZUOYhytj8Ols6E/dt6u8ML0vk8LDo7yuJVUvZSBmORy97icwEC KUYY8UB+9wa/kzuMB9N0ImekZQ4BNlKGLq7XgwZU= 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 4.20 41/88] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Date: Mon, 4 Mar 2019 09:22:24 +0100 Message-Id: <20190304081632.200073272@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190304081630.610632175@linuxfoundation.org> References: <20190304081630.610632175@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 4.20-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 086642ea4b26e..020af95ea9e7a 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1697,7 +1697,7 @@ 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