From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751226AbdCQNSM (ORCPT ); Fri, 17 Mar 2017 09:18:12 -0400 Received: from mga01.intel.com ([192.55.52.88]:43701 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751037AbdCQNSK (ORCPT ); Fri, 17 Mar 2017 09:18:10 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.36,176,1486454400"; d="scan'208";a="945438660" Message-ID: <1489756680.19767.55.camel@linux.intel.com> Subject: Re: Console stops with calltrace on cavium octeon2 68XX EVB From: Andy Shevchenko To: Arun Chandran , "linux-kernel@vger.kernel.org" , linux-serial@vger.kernel.org Cc: jason.uy@broadcom.com, scott.branden@broadcom.com, ray.jui@broadcom.com, wangkefeng.wang@huawei.com, Greg Kroah-Hartman , jslaby@suse.com, heikki.krogerus@linux.intel.com Date: Fri, 17 Mar 2017 15:18:00 +0200 In-Reply-To: References: Organization: Intel Finland Oy Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.22.5-1 Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, 2017-03-17 at 18:30 +0530, Arun Chandran wrote: > Hi, > > I got this on my cavium octeon2 68XX EVB console when booting the > latest kernel(4.11.0-rc2-00235-gd528ae0). > And I bisected and reached at this commit > "6a171b2 serial: 8250_dw: Allow hardware flow control to be used" > > When I printed the value of my "d->clk" inside dw8250_set_termios() it > was zero. > Then the below change is solving the problem for me.(No calltrace > console works fine) > Can anybody please comment on this? Have you seen https://www.spinics.net/lists/linux-serial/msg25483.html https://patchwork.kernel.org/patch/9603947/ ? -- Andy Shevchenko Intel Finland Oy