Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933752AbcJRTjy (ORCPT ); Tue, 18 Oct 2016 15:39:54 -0400 Received: from mail.kernel.org ([198.145.29.136]:60126 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753733AbcJRTjq (ORCPT ); Tue, 18 Oct 2016 15:39:46 -0400 MIME-Version: 1.0 In-Reply-To: <7940c6b1-22df-90f9-4ef8-43b707db6f68@ti.com> References: <7940c6b1-22df-90f9-4ef8-43b707db6f68@ti.com> From: Rob Herring Date: Tue, 18 Oct 2016 14:39:21 -0500 X-Gmail-Original-Message-ID: Message-ID: Subject: Re: seeing some junk characters on boot console with v4.9-rc1-3-g14155ca To: Mugunthan V N Cc: Linux OMAP Mailing List , Tony Lindgren , "linux-serial@vger.kernel.org" , LKML , Sekhar Nori , Vignesh R Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 699 Lines: 19 On Tue, Oct 18, 2016 at 7:08 AM, Mugunthan V N wrote: > Hi > > I am seeing some junk characters on uart boot console on DRA72x platform > [1] and even on other TI platforms, did a bisect and found the commit > "761ed4a94582" broke it first. > > By reverting below two commit, I don't see the issue logs [2]. > > 761ed4a94582 "tty:serial_core: convert uart_close to use tty_port_close" > a5a2b13074fd "serial: core: fix potential NULL pointer dereference" Can you test with the patch titled "tty: serial_core: Fix serial console crash on port shutdown"[1]? It may be disabling the console when it shouldn't. Rob [1] http://www.gossamer-threads.com/lists/linux/kernel/2546399