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=-9.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,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 4F238C43381 for ; Fri, 15 Feb 2019 02:25:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 080C02073D for ; Fri, 15 Feb 2019 02:25:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550197556; bh=iHm9p4Nat7SX+XM/Bb28EpwTuJyMYZHw4eXGwzeLzWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=hKfzydx5m0hEghE4/SnI+Fgxs1uLpKqyH8MAhX8g4Fbhq0LRaOIQSYbtzqTD/8LFC cBV+ak896H+ORzmIMLZ1c04+Eddt3QkoQQxPeztb5y972H/+WXX21s7ckUsk0jYBf/ Ov0Jk5BFRVNGyYzvzSXxFB3U97+0qS0YOcRPqA/k= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729566AbfBOCZy (ORCPT ); Thu, 14 Feb 2019 21:25:54 -0500 Received: from mail.kernel.org ([198.145.29.99]:53860 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2391051AbfBOCN6 (ORCPT ); Thu, 14 Feb 2019 21:13:58 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9D18E20643; Fri, 15 Feb 2019 02:13:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550196837; bh=iHm9p4Nat7SX+XM/Bb28EpwTuJyMYZHw4eXGwzeLzWc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=wFSrklIh9/TX8dai2oq3ce1+/VS1qgHBcR/AKfuIF6IncYr6WIACfBqZCphs+72FU 62LbiJ2yQ58FrmM3LWeDmL6FiAFaWRdUCW+Q0NCkuGUyaz1VHwWQ0JTKspm1ATGeD+ hPKrw6Fm+FirWPY1IdcXzhYenyqoSF7ALWae9980= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Tomonori Sakita , Atsushi Nemoto , Greg Kroah-Hartman , Sasha Levin , linux-serial@vger.kernel.org Subject: [PATCH AUTOSEL 4.14 24/40] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Date: Thu, 14 Feb 2019 21:12:57 -0500 Message-Id: <20190215021313.178476-24-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190215021313.178476-1-sashal@kernel.org> References: <20190215021313.178476-1-sashal@kernel.org> MIME-Version: 1.0 X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Tomonori Sakita [ 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 fd64ac2c1a74..2451129c515d 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