From: Frans Klaver <frans.klaver@xsens.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Peter Hurley <peter@hurleysoftware.com>, <tony@atomide.com>,
<gregkh@linuxfoundation.org>, <linux-kernel@vger.kernel.org>,
<balbi@ti.com>, <linux-serial@vger.kernel.org>,
<linux-omap@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
Alan Cox <alan@linux.intel.com>
Subject: Re: [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx
Date: Mon, 29 Sep 2014 12:30:43 +0200 [thread overview]
Message-ID: <20140929103042.GA31111@ci00147.xsens-tech.local> (raw)
In-Reply-To: <20140929095440.GB13142@linutronix.de>
On Mon, Sep 29, 2014 at 11:54:40AM +0200, Sebastian Andrzej Siewior wrote:
> There is a patch named "ARM: edma: unconditionally ack the error
> interrupt". I have the feeling that this is not really required once we
> delay set_termios. I couldn't reproduce the bug with beagleblack with my
> usual test case.
I think so too. I didn't need it either.
> For your "too much work for irq" problem: Could you add trace_printk()
> in tx/rx dma start/complete, and irq routine? The interresting part is
> what is the irq routine doing once entered. It might be a condition that
> is ignored at first and "acked" later while serving another event. Or it
> is really doing something and this is more or less "legal".
I'll have a look at that.
>
> >Thanks,
> >Frans
>
> Sebastian
WARNING: multiple messages have this Message-ID (diff)
From: Frans Klaver <frans.klaver@xsens.com>
To: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>,
Peter Hurley <peter@hurleysoftware.com>,
tony@atomide.com, gregkh@linuxfoundation.org,
linux-kernel@vger.kernel.org, balbi@ti.com,
linux-serial@vger.kernel.org, linux-omap@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
Alan Cox <alan@linux.intel.com>
Subject: Re: [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx
Date: Mon, 29 Sep 2014 12:30:43 +0200 [thread overview]
Message-ID: <20140929103042.GA31111@ci00147.xsens-tech.local> (raw)
In-Reply-To: <20140929095440.GB13142@linutronix.de>
On Mon, Sep 29, 2014 at 11:54:40AM +0200, Sebastian Andrzej Siewior wrote:
> There is a patch named "ARM: edma: unconditionally ack the error
> interrupt". I have the feeling that this is not really required once we
> delay set_termios. I couldn't reproduce the bug with beagleblack with my
> usual test case.
I think so too. I didn't need it either.
> For your "too much work for irq" problem: Could you add trace_printk()
> in tx/rx dma start/complete, and irq routine? The interresting part is
> what is the irq routine doing once entered. It might be a condition that
> is ignored at first and "acked" later while serving another event. Or it
> is really doing something and this is more or less "legal".
I'll have a look at that.
>
> >Thanks,
> >Frans
>
> Sebastian
WARNING: multiple messages have this Message-ID (diff)
From: frans.klaver@xsens.com (Frans Klaver)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx
Date: Mon, 29 Sep 2014 12:30:43 +0200 [thread overview]
Message-ID: <20140929103042.GA31111@ci00147.xsens-tech.local> (raw)
In-Reply-To: <20140929095440.GB13142@linutronix.de>
On Mon, Sep 29, 2014 at 11:54:40AM +0200, Sebastian Andrzej Siewior wrote:
> There is a patch named "ARM: edma: unconditionally ack the error
> interrupt". I have the feeling that this is not really required once we
> delay set_termios. I couldn't reproduce the bug with beagleblack with my
> usual test case.
I think so too. I didn't need it either.
> For your "too much work for irq" problem: Could you add trace_printk()
> in tx/rx dma start/complete, and irq routine? The interresting part is
> what is the irq routine doing once entered. It might be a condition that
> is ignored at first and "acked" later while serving another event. Or it
> is really doing something and this is more or less "legal".
I'll have a look at that.
>
> >Thanks,
> >Frans
>
> Sebastian
next prev parent reply other threads:[~2014-09-29 10:30 UTC|newest]
Thread overview: 236+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-10 19:29 [PATCH 00/16 v9] omap 8250 based uart + DMA Sebastian Andrzej Siewior
2014-09-10 19:29 ` Sebastian Andrzej Siewior
2014-09-10 19:29 ` Sebastian Andrzej Siewior
2014-09-10 19:29 ` [PATCH 01/16] tty: serial: 8250_core: allow to set ->throttle / ->unthrottle callbacks Sebastian Andrzej Siewior
2014-09-10 19:29 ` Sebastian Andrzej Siewior
2014-09-10 19:29 ` [PATCH 02/16] tty: serial: 8250_core: add run time pm Sebastian Andrzej Siewior
2014-09-10 19:29 ` Sebastian Andrzej Siewior
2014-09-10 19:29 ` Sebastian Andrzej Siewior
2014-09-29 9:46 ` Frans Klaver
2014-09-29 9:46 ` Frans Klaver
2014-09-29 9:46 ` Frans Klaver
2014-09-29 13:39 ` Sebastian Andrzej Siewior
2014-09-29 13:39 ` Sebastian Andrzej Siewior
2014-09-10 19:29 ` [PATCH 03/16] tty: serial: 8250_core: read only RX if there is something in the FIFO Sebastian Andrzej Siewior
2014-09-10 19:29 ` Sebastian Andrzej Siewior
2015-02-09 13:34 ` Nicolas Schichan
2015-02-09 13:34 ` Nicolas Schichan
2015-02-09 23:34 ` Peter Hurley
2015-02-09 23:34 ` Peter Hurley
2015-02-10 9:32 ` Sebastian Andrzej Siewior
2015-02-10 9:32 ` Sebastian Andrzej Siewior
2015-02-10 12:04 ` Nicolas Schichan
2015-02-10 12:04 ` Nicolas Schichan
2015-02-10 17:46 ` Peter Hurley
2015-02-10 17:46 ` Peter Hurley
2015-02-11 20:01 ` Peter Hurley
2015-02-11 20:01 ` Peter Hurley
2015-02-11 20:03 ` Tony Lindgren
2015-02-11 20:03 ` Tony Lindgren
2015-02-11 20:03 ` Tony Lindgren
2015-02-11 20:42 ` Peter Hurley
2015-02-11 20:42 ` Peter Hurley
2015-02-12 8:45 ` Sebastian Andrzej Siewior
2015-02-12 8:45 ` Sebastian Andrzej Siewior
2015-02-12 9:40 ` Russell King - ARM Linux
2015-02-12 9:40 ` Russell King - ARM Linux
2015-02-12 16:32 ` Peter Hurley
2015-02-12 16:32 ` Peter Hurley
2015-02-12 19:23 ` Sebastian Andrzej Siewior
2015-02-12 19:23 ` Sebastian Andrzej Siewior
2015-02-12 19:55 ` Peter Hurley
2015-02-12 19:55 ` Peter Hurley
2015-02-12 20:34 ` Sebastian Andrzej Siewior
2015-02-12 20:34 ` Sebastian Andrzej Siewior
2015-02-13 18:51 ` Sebastian Andrzej Siewior
2015-02-13 18:51 ` Sebastian Andrzej Siewior
2015-02-13 23:15 ` Russell King - ARM Linux
2015-02-13 23:15 ` Russell King - ARM Linux
2015-02-15 17:32 ` [PATCH] serial: 8250: Revert "tty: serial: 8250_core: read only RX if there is something in the FIFO" Sebastian Andrzej Siewior
2015-02-15 17:32 ` Sebastian Andrzej Siewior
2015-05-12 20:25 ` Tony Lindgren
2015-05-12 20:25 ` Tony Lindgren
2014-09-10 19:29 ` [PATCH 04/16] tty: serial: 8250_core: use the ->line argument as a hint in serial8250_find_match_or_unused() Sebastian Andrzej Siewior
2014-09-10 19:29 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 05/16] tty: serial: 8250_core: remove UART_IER_RDI in serial8250_stop_rx() Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-11 11:19 ` Heikki Krogerus
2014-09-11 11:19 ` Heikki Krogerus
2014-09-10 19:30 ` [PATCH 06/16] tty: serial: Add 8250-core based omap driver Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-11 11:57 ` Peter Hurley
2014-09-11 11:57 ` Peter Hurley
2014-09-11 11:57 ` Peter Hurley
2014-09-16 17:01 ` Sebastian Andrzej Siewior
2014-09-16 17:01 ` Sebastian Andrzej Siewior
2014-09-16 17:01 ` Sebastian Andrzej Siewior
2014-09-29 9:38 ` Frans Klaver
2014-09-29 9:38 ` Frans Klaver
2014-09-29 9:38 ` Frans Klaver
2014-09-29 13:27 ` Sebastian Andrzej Siewior
2014-09-29 13:27 ` Sebastian Andrzej Siewior
2014-09-29 13:34 ` Frans Klaver
2014-09-29 13:34 ` Frans Klaver
2014-09-10 19:30 ` [PATCH 07/16] tty: serial: 8250_dma: handle error on TX submit Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 08/16] tty: serial: 8250_dma: enqueue RX dma again on completion Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 09/16] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-11 11:17 ` Heikki Krogerus
2014-09-11 11:17 ` Heikki Krogerus
2014-09-11 11:17 ` Heikki Krogerus
2014-09-11 11:42 ` Sebastian Andrzej Siewior
2014-09-11 11:42 ` Sebastian Andrzej Siewior
2014-09-11 11:42 ` Sebastian Andrzej Siewior
2014-09-11 12:32 ` Peter Hurley
2014-09-11 12:32 ` Peter Hurley
2014-09-11 12:50 ` Sebastian Andrzej Siewior
2014-09-11 12:50 ` Sebastian Andrzej Siewior
2014-09-11 14:35 ` Peter Hurley
2014-09-11 14:35 ` Peter Hurley
2014-09-11 14:35 ` Peter Hurley
2014-09-15 17:01 ` Sebastian Andrzej Siewior
2014-09-15 17:01 ` Sebastian Andrzej Siewior
2014-09-16 16:55 ` Sebastian Andrzej Siewior
2014-09-16 16:55 ` Sebastian Andrzej Siewior
2014-09-16 16:55 ` Sebastian Andrzej Siewior
2014-09-17 12:20 ` Peter Hurley
2014-09-17 12:20 ` Peter Hurley
2014-09-17 16:25 ` Sebastian Andrzej Siewior
2014-09-17 16:25 ` Sebastian Andrzej Siewior
2014-09-17 16:25 ` Sebastian Andrzej Siewior
2014-09-29 16:15 ` Sebastian Andrzej Siewior
2014-09-29 16:15 ` Sebastian Andrzej Siewior
2014-09-11 15:11 ` Frans Klaver
2014-09-11 15:11 ` Frans Klaver
2014-09-11 15:11 ` Frans Klaver
2014-09-11 16:04 ` Sebastian Andrzej Siewior
2014-09-11 16:04 ` Sebastian Andrzej Siewior
2014-09-11 17:04 ` Frans Klaver
2014-09-11 17:04 ` Frans Klaver
2014-09-12 7:23 ` Sebastian Andrzej Siewior
2014-09-12 7:23 ` Sebastian Andrzej Siewior
2014-09-12 9:40 ` Frans Klaver
2014-09-12 9:40 ` Frans Klaver
2014-09-12 9:51 ` Sebastian Andrzej Siewior
2014-09-12 9:51 ` Sebastian Andrzej Siewior
2014-09-12 10:28 ` Frans Klaver
2014-09-12 10:28 ` Frans Klaver
2014-09-12 10:28 ` Frans Klaver
2014-09-15 16:42 ` Sebastian Andrzej Siewior
2014-09-15 16:42 ` Sebastian Andrzej Siewior
2014-09-16 9:05 ` Frans Klaver
2014-09-16 9:05 ` Frans Klaver
2014-09-16 9:05 ` Frans Klaver
2014-09-16 12:42 ` Frans Klaver
2014-09-16 12:42 ` Frans Klaver
2014-09-16 12:42 ` Frans Klaver
2014-09-16 14:23 ` Frans Klaver
2014-09-16 14:23 ` Frans Klaver
2014-09-16 14:23 ` Frans Klaver
2014-09-17 10:28 ` Frans Klaver
2014-09-17 10:28 ` Frans Klaver
2014-09-17 10:28 ` Frans Klaver
2014-09-21 20:41 ` Sebastian Andrzej Siewior
2014-09-21 20:41 ` Sebastian Andrzej Siewior
2014-09-21 20:41 ` Sebastian Andrzej Siewior
2014-09-22 9:28 ` Frans Klaver
2014-09-22 9:28 ` Frans Klaver
2014-09-22 9:28 ` Frans Klaver
2014-09-24 7:56 ` Sebastian Andrzej Siewior
2014-09-24 7:56 ` Sebastian Andrzej Siewior
2014-09-25 15:14 ` Sebastian Andrzej Siewior
2014-09-25 15:14 ` Sebastian Andrzej Siewior
2014-09-25 15:18 ` Frans Klaver
2014-09-25 15:18 ` Frans Klaver
2014-09-29 8:50 ` Frans Klaver
2014-09-29 8:50 ` Frans Klaver
2014-09-29 8:50 ` Frans Klaver
2014-09-29 9:54 ` Sebastian Andrzej Siewior
2014-09-29 9:54 ` Sebastian Andrzej Siewior
2014-09-29 10:30 ` Frans Klaver [this message]
2014-09-29 10:30 ` Frans Klaver
2014-09-29 10:30 ` Frans Klaver
2014-09-30 8:44 ` Frans Klaver
2014-09-30 8:44 ` Frans Klaver
2014-09-30 8:44 ` Frans Klaver
2014-10-02 10:27 ` Sebastian Andrzej Siewior
2014-10-02 10:27 ` Sebastian Andrzej Siewior
2014-10-02 10:27 ` Sebastian Andrzej Siewior
2014-10-13 14:55 ` Frans Klaver
2014-10-13 14:55 ` Frans Klaver
2014-10-13 14:55 ` Frans Klaver
2014-09-23 17:03 ` Peter Hurley
2014-09-23 17:03 ` Peter Hurley
2014-09-24 7:53 ` Sebastian Andrzej Siewior
2014-09-24 7:53 ` Sebastian Andrzej Siewior
2014-09-25 10:42 ` Sebastian Andrzej Siewior
2014-09-25 10:42 ` Sebastian Andrzej Siewior
2014-09-25 11:31 ` Peter Hurley
2014-09-25 11:31 ` Peter Hurley
2014-09-25 13:11 ` Sebastian Andrzej Siewior
2014-09-25 13:11 ` Sebastian Andrzej Siewior
2014-09-25 13:11 ` Sebastian Andrzej Siewior
2014-09-17 16:34 ` Sebastian Andrzej Siewior
2014-09-17 16:34 ` Sebastian Andrzej Siewior
2014-09-17 16:34 ` Sebastian Andrzej Siewior
2014-09-19 10:22 ` Heikki Krogerus
2014-09-19 10:22 ` Heikki Krogerus
2014-09-19 10:22 ` Heikki Krogerus
2014-09-19 10:58 ` Sebastian Andrzej Siewior
2014-09-19 10:58 ` Sebastian Andrzej Siewior
2014-09-19 11:25 ` Peter Hurley
2014-09-19 11:25 ` Peter Hurley
2014-09-22 7:46 ` Heikki Krogerus
2014-09-22 7:46 ` Heikki Krogerus
2014-09-25 9:24 ` Sebastian Andrzej Siewior
2014-09-25 9:24 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 10/16] tty: serial: 8250_dma: optimize the xmit path due to UART_BUG_DMA_TX Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 11/16] tty: serial: 8250_dma: keep own book keeping about RX transfers Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 12/16] tty: serial: 8250_dma: handle the UART RDI event while DMA remains idle Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-29 9:23 ` Frans Klaver
2014-09-29 9:23 ` Frans Klaver
2014-09-29 9:23 ` Frans Klaver
2014-09-10 19:30 ` [PATCH 13/16] tty: serial: 8250_dma: add pm runtime Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-29 9:26 ` Frans Klaver
2014-09-29 9:26 ` Frans Klaver
2014-09-29 9:26 ` Frans Klaver
2014-09-29 9:56 ` Sebastian Andrzej Siewior
2014-09-29 9:56 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 14/16] arm: dts: am33xx: add DMA properties for UART Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 15/16] arm: dts: dra7: " Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-10 19:30 ` [PATCH 16/16] tty: serial: 8250: omap: add dma support Sebastian Andrzej Siewior
2014-09-10 19:30 ` Sebastian Andrzej Siewior
2014-09-12 22:43 ` [PATCH 00/16 v9] omap 8250 based uart + DMA Tony Lindgren
2014-09-12 22:43 ` Tony Lindgren
2014-09-12 22:43 ` Tony Lindgren
2014-09-15 11:50 ` Sebastian Andrzej Siewior
2014-09-15 11:50 ` Sebastian Andrzej Siewior
2014-09-15 11:50 ` Sebastian Andrzej Siewior
2014-09-16 12:57 ` Sebastian Andrzej Siewior
2014-09-16 12:57 ` Sebastian Andrzej Siewior
2014-09-16 12:57 ` Sebastian Andrzej Siewior
2014-09-16 16:48 ` Tony Lindgren
2014-09-16 16:48 ` Tony Lindgren
2014-09-16 21:30 ` Tony Lindgren
2014-09-16 21:30 ` Tony Lindgren
2014-09-16 21:30 ` Tony Lindgren
2014-09-17 8:38 ` Sebastian Andrzej Siewior
2014-09-17 8:38 ` Sebastian Andrzej Siewior
2014-09-17 9:05 ` Sebastian Andrzej Siewior
2014-09-17 9:05 ` Sebastian Andrzej Siewior
2014-09-26 16:02 ` Greg KH
2014-09-26 16:02 ` Greg KH
2014-09-26 16:02 ` Greg KH
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