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=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 291E1C43381 for ; Fri, 22 Mar 2019 11:31:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id ECB0421917 for ; Fri, 22 Mar 2019 11:31:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553254306; bh=00m6Th+xVNpBz8NYUNvdaj9ZQqwQqsEJqnvonCEZ0/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=0fdG8WSatS0ljjznaSf0+RfL6RkXaki9mZrZDww1nup0Ao3IrhaUZmZ1svP5EWbuB bleY2pzLLIx7zXlAcZmeDZQeAiIRY5VLYCdgbvFwhfz09TQ/LYnzTyQ1lZigNirnf+ hQlqM2q/SzPM11kUmBArZHP7uoYTaQAeFhrfQwO8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729855AbfCVLbo (ORCPT ); Fri, 22 Mar 2019 07:31:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:57628 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729861AbfCVL3o (ORCPT ); Fri, 22 Mar 2019 07:29:44 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.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 88B1C2183E; Fri, 22 Mar 2019 11:29:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1553254184; bh=00m6Th+xVNpBz8NYUNvdaj9ZQqwQqsEJqnvonCEZ0/A=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=u2g2w6TZCp9EHSYWvlKC+hgNjc6OhrQZ5aB8caxWWriBpIdYLlcaclVCcl3binT0a AdkpCfcG64zwUAGcDzfFko+0Uxi2lZyRIrrAfJk0s3tS7V5TmQeRECl7vhyklSGSjo vV72YK1Khpa8HUrEj3dzluzS9jJ+iZ8dWzFfZ6Qo= 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 4.4 042/230] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Date: Fri, 22 Mar 2019 12:13:00 +0100 Message-Id: <20190322111239.659370778@linuxfoundation.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190322111236.796964179@linuxfoundation.org> References: <20190322111236.796964179@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: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-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 8b5ec9386f0f4..1544a7cc76ff8 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1409,7 +1409,7 @@ 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