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 060E9C43381 for ; Mon, 4 Mar 2019 08:43:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BFFB72082F for ; Mon, 4 Mar 2019 08:43:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551689020; bh=8kNkyLOItMDv8gIPgWAtTpz7PylYE9Mk0hcuLZxABRQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=paHz8kMF2+6lKzKpFTNkVg/Jhr2fsm8ZGK07QHIZUTPcd9LxKuk7qFh6n6+UkVBh8 nFdRT9CZGloqqqmDZWXoBcZX6ZMHgcKJTtNhpof/cxWSOJGZi/4oDPrKVWkM50C8jR K3lMgiBZBUR+V7JM9URjPN9yG8jNxJ+2Cp5CKT1Y= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727584AbfCDI3i (ORCPT ); Mon, 4 Mar 2019 03:29:38 -0500 Received: from mail.kernel.org ([198.145.29.99]:56492 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727577AbfCDI3h (ORCPT ); Mon, 4 Mar 2019 03:29:37 -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 9D7BD20823; Mon, 4 Mar 2019 08:29:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1551688177; bh=8kNkyLOItMDv8gIPgWAtTpz7PylYE9Mk0hcuLZxABRQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Q3htWti3CqHrCqVAommoUX64rcRbVD20n31X/F0v9n7etS1e+hMKfG5Fe8SLzw7+a mkUqAngNX1gw6M1BLzk8TO25dgpDtJzxw1HTw1+wkp80TZ/bLPRWCZNWK5jmXe/RpO 3tbtOh6Pt+wKGPesrZ2yT0WbjKdMwxI71R3Y4Wwo= 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 4.19 41/78] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Date: Mon, 4 Mar 2019 09:22:24 +0100 Message-Id: <20190304081627.328954258@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190304081625.508788074@linuxfoundation.org> References: <20190304081625.508788074@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 4.19-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 7d030c2e42ffd..50b6746a8b5d7 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1695,7 +1695,7 @@ 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