From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753469AbaIORCG (ORCPT ); Mon, 15 Sep 2014 13:02:06 -0400 Received: from www.linutronix.de ([62.245.132.108]:35474 "EHLO Galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752807AbaIORCE (ORCPT ); Mon, 15 Sep 2014 13:02:04 -0400 Message-ID: <54171B85.5060209@linutronix.de> Date: Mon, 15 Sep 2014 19:01:57 +0200 From: Sebastian Andrzej Siewior User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.0 MIME-Version: 1.0 To: Peter Hurley , Heikki Krogerus CC: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org, tony@atomide.com, balbi@ti.com, gregkh@linuxfoundation.org, Alan Cox Subject: Re: [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx References: <1410377411-26656-1-git-send-email-bigeasy@linutronix.de> <1410377411-26656-10-git-send-email-bigeasy@linutronix.de> <20140911111721.GB17476@xps8300> <54118AAB.2010205@linutronix.de> <5411967A.6090406@hurleysoftware.com> <54119AAA.9080907@linutronix.de> <5411B33F.10405@hurleysoftware.com> In-Reply-To: <5411B33F.10405@hurleysoftware.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Linutronix-Spam-Score: -1.0 X-Linutronix-Spam-Level: - X-Linutronix-Spam-Status: No , -1.0 points, 5.0 required, ALL_TRUSTED=-1,SHORTCIRCUIT=-0.0001 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 09/11/2014 04:35 PM, Peter Hurley wrote: > I do need to find out if omap hardware sets UART_MSR_DCTS when auto CTS > is on. Would you mind running the debug patch below with HW flow control on? I didn't forget about this. However I told minicom to use hardware flow control (and I see the driver set the HW bit) but I haven't seen that uart_handle_cts_change() has been invoked at all. I'm going to check two other boards and report then. > Regards, > Peter Hurley Sebastian From mboxrd@z Thu Jan 1 00:00:00 1970 From: bigeasy@linutronix.de (Sebastian Andrzej Siewior) Date: Mon, 15 Sep 2014 19:01:57 +0200 Subject: [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx In-Reply-To: <5411B33F.10405@hurleysoftware.com> References: <1410377411-26656-1-git-send-email-bigeasy@linutronix.de> <1410377411-26656-10-git-send-email-bigeasy@linutronix.de> <20140911111721.GB17476@xps8300> <54118AAB.2010205@linutronix.de> <5411967A.6090406@hurleysoftware.com> <54119AAA.9080907@linutronix.de> <5411B33F.10405@hurleysoftware.com> Message-ID: <54171B85.5060209@linutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 09/11/2014 04:35 PM, Peter Hurley wrote: > I do need to find out if omap hardware sets UART_MSR_DCTS when auto CTS > is on. Would you mind running the debug patch below with HW flow control on? I didn't forget about this. However I told minicom to use hardware flow control (and I see the driver set the HW bit) but I haven't seen that uart_handle_cts_change() has been invoked at all. I'm going to check two other boards and report then. > Regards, > Peter Hurley Sebastian