From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932433AbaFIVHx (ORCPT ); Mon, 9 Jun 2014 17:07:53 -0400 Received: from filtteri6.pp.htv.fi ([213.243.153.189]:44848 "EHLO filtteri6.pp.htv.fi" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932195AbaFIVHu (ORCPT ); Mon, 9 Jun 2014 17:07:50 -0400 X-Greylist: delayed 504 seconds by postgrey-1.27 at vger.kernel.org; Mon, 09 Jun 2014 17:07:49 EDT Date: Mon, 9 Jun 2014 23:59:17 +0300 From: Aaro Koskinen To: Seth Bollinger , Greg Kroah-Hartman , "David S. Miller" , linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org Subject: Linux 3.15: SPARC serial console regression Message-ID: <20140609205917.GA913@drone.musicnaut.iki.fi> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.23 (2014-03-12) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, While testing the final 3.15, I noticed the serial console (sunsab) does not work anymore on Sun Ultra. It will tx fine the console output during the boot. But then I try to type something e.g. at the login: prompt, it behaves oddly: it re-transmits some old output, and then stalls for a few secs, usually for each character. Typed characters are however received correctly. But the console is impossible to use... I bisected this to: 717f3bbab3c7628736ef738fdbf3d9a28578c26c is the first bad commit commit 717f3bbab3c7628736ef738fdbf3d9a28578c26c Author: Seth Bollinger Date: Tue Mar 25 12:55:37 2014 -0500 serial_core: Fix conditional start_tx on ring buffer not empty A. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Aaro Koskinen Date: Mon, 09 Jun 2014 20:59:17 +0000 Subject: Linux 3.15: SPARC serial console regression Message-Id: <20140609205917.GA913@drone.musicnaut.iki.fi> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Seth Bollinger , Greg Kroah-Hartman , "David S. Miller" , linux-kernel@vger.kernel.org, sparclinux@vger.kernel.org Hi, While testing the final 3.15, I noticed the serial console (sunsab) does not work anymore on Sun Ultra. It will tx fine the console output during the boot. But then I try to type something e.g. at the login: prompt, it behaves oddly: it re-transmits some old output, and then stalls for a few secs, usually for each character. Typed characters are however received correctly. But the console is impossible to use... I bisected this to: 717f3bbab3c7628736ef738fdbf3d9a28578c26c is the first bad commit commit 717f3bbab3c7628736ef738fdbf3d9a28578c26c Author: Seth Bollinger Date: Tue Mar 25 12:55:37 2014 -0500 serial_core: Fix conditional start_tx on ring buffer not empty A.