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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A70D8C28D13 for ; Mon, 13 Jun 2022 12:56:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1356305AbiFMM4L (ORCPT ); Mon, 13 Jun 2022 08:56:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50432 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1358157AbiFMMzF (ORCPT ); Mon, 13 Jun 2022 08:55:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C04265CD; Mon, 13 Jun 2022 04:14:29 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 573F260EAE; Mon, 13 Jun 2022 11:14:28 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 68345C34114; Mon, 13 Jun 2022 11:14:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1655118867; bh=mw/Kae021Zd0ilpCkoH0xuovLwi9c677QHtw690TGHg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HDYGOOTlJ5dZJGI6b02VwKk2tfMzJO1OrB285XePYYq5M+YEK/567z58SMqmHZB7k Zxz8kpqlLqdOSveUxNXbwExhIj5jxWZkbiEA1t1sRPy/oEXdrzM6UH9ABCazTKThTJ pgHV0V82QWbNZqMCF9Irjq8lZAyzNFHzNAg2uiTE= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Sasha Levin Subject: [PATCH 5.15 057/247] serial: txx9: Dont allow CS5-6 Date: Mon, 13 Jun 2022 12:09:19 +0200 Message-Id: <20220613094924.685791046@linuxfoundation.org> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220613094922.843438024@linuxfoundation.org> References: <20220613094922.843438024@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Ilpo Järvinen [ Upstream commit 79ac88655dc0551e3571ad16bdabdbe65d61553e ] Only CS7 and CS8 are supported but CSIZE is not sanitized with CS5 or CS6 to CS8. Set CSIZE correctly so that userspace knows the effective value. Incorrect CSIZE also results in miscalculation of the frame bits in tty_get_char_size() or in its predecessor where the roughly the same code is directly within uart_update_timeout(). Fixes: 1da177e4c3f4 (Linux-2.6.12-rc2) Signed-off-by: Ilpo Järvinen Link: https://lore.kernel.org/r/20220519081808.3776-5-ilpo.jarvinen@linux.intel.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/tty/serial/serial_txx9.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/tty/serial/serial_txx9.c b/drivers/tty/serial/serial_txx9.c index aaca4fe38486..1f8362d5e3b9 100644 --- a/drivers/tty/serial/serial_txx9.c +++ b/drivers/tty/serial/serial_txx9.c @@ -644,6 +644,8 @@ serial_txx9_set_termios(struct uart_port *port, struct ktermios *termios, case CS6: /* not supported */ case CS8: cval |= TXX9_SILCR_UMODE_8BIT; + termios->c_cflag &= ~CSIZE; + termios->c_cflag |= CS8; break; } -- 2.35.1