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,URIBL_BLOCKED,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 8C438C43381 for ; Fri, 15 Feb 2019 02:39:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4F9F02192B for ; Fri, 15 Feb 2019 02:39:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550198372; bh=3V/u7Utnyzge0+vvY0FBq1belRu7qA0GQkD+z+/Od0E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=qXQn1pHz5LPzOhNeAl6vygAyrToFi5JD+9OENxu25USb9mlXbjImna/IZUPSEo2Ea LWdac6xokLCSJWhZ/IaSAsNZEmv/xCcPZgZYHP4T+X7DIJ4vcqjIXwpqM5mI6S+juX TvQ+ckhHcxK6L1E03wRMtOqeX7O1UdIOn32boQ3g= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389235AbfBOCja (ORCPT ); Thu, 14 Feb 2019 21:39:30 -0500 Received: from mail.kernel.org ([198.145.29.99]:50344 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390171AbfBOCKN (ORCPT ); Thu, 14 Feb 2019 21:10:13 -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 4363521B68; Fri, 15 Feb 2019 02:10:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1550196613; bh=3V/u7Utnyzge0+vvY0FBq1belRu7qA0GQkD+z+/Od0E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NlcWX54YEYRfL9ZMJHcms7UvpOrHfwRUxjx4Lb67b5Gat/o99hBwRRnA72SWF/+QA SA1qhyneDliW6utPug0UaEYPMwYy36emlLkFAtF1ufsZYE2zf7Ojr8wSK85evtCC+r OQkSSLUBJBOSkPoom+Z1QQSww4FRJW/NkWoKTnbA= 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 4.20 45/77] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Date: Thu, 14 Feb 2019 21:08:23 -0500 Message-Id: <20190215020855.176727-45-sashal@kernel.org> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20190215020855.176727-1-sashal@kernel.org> References: <20190215020855.176727-1-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 00c220e4f43c..989b95af1b95 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1693,7 +1693,7 @@ 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