From: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
To: Frans Klaver <frans.klaver@xsens.com>
Cc: linux-serial@vger.kernel.org, tony@atomide.com,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-kernel@vger.kernel.org, balbi@ti.com,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v8 00/18] 8250-core based serial driver for OMAP + DMA
Date: Mon, 8 Sep 2014 18:33:13 +0200 [thread overview]
Message-ID: <20140908163313.GA25724@linutronix.de> (raw)
In-Reply-To: <20140908151501.GA22584@linutronix.de>
* Sebastian Andrzej Siewior | 2014-09-08 17:15:01 [+0200]:
>* Frans Klaver | 2014-09-08 16:46:18 [+0200]:
>
>>- ncurses based applications (vi, less) don't play nice for me on the
>> console with this series. less doesn't show me anything. vi doesn't
>> return to console properly.
>
>Can you give a test case
Okay. less. My am335x-evm freezes after a while for no obvious reason.
The data that hits the RX fifo is still received but the TX won't do
anything. The DMA request is pending, the FIFO level is @64 bytes and
the UART doesn't make any progress.
On beagle-board I see what you described: less on a file and nothing
happens.
Disabling DMA seems to help fix the problem omap3. Nothing changes for
am335x.
Sebastian
WARNING: multiple messages have this Message-ID (diff)
From: bigeasy@linutronix.de (Sebastian Andrzej Siewior)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v8 00/18] 8250-core based serial driver for OMAP + DMA
Date: Mon, 8 Sep 2014 18:33:13 +0200 [thread overview]
Message-ID: <20140908163313.GA25724@linutronix.de> (raw)
In-Reply-To: <20140908151501.GA22584@linutronix.de>
* Sebastian Andrzej Siewior | 2014-09-08 17:15:01 [+0200]:
>* Frans Klaver | 2014-09-08 16:46:18 [+0200]:
>
>>- ncurses based applications (vi, less) don't play nice for me on the
>> console with this series. less doesn't show me anything. vi doesn't
>> return to console properly.
>
>Can you give a test case
Okay. less. My am335x-evm freezes after a while for no obvious reason.
The data that hits the RX fifo is still received but the TX won't do
anything. The DMA request is pending, the FIFO level is @64 bytes and
the UART doesn't make any progress.
On beagle-board I see what you described: less on a file and nothing
happens.
Disabling DMA seems to help fix the problem omap3. Nothing changes for
am335x.
Sebastian
next prev parent reply other threads:[~2014-09-08 16:33 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-05 19:02 [PATCH v8 00/18] 8250-core based serial driver for OMAP + DMA Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 01/18] tty: serial: 8250_core: provide a function to export uart_8250_port Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 02/18] tty: serial: 8250_core: allow to overwrite & export serial8250_startup() Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 03/18] tty: serial: 8250_core: allow to set ->throttle / ->unthrottle callbacks Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-08 23:33 ` Greg Kroah-Hartman
2014-09-08 23:33 ` Greg Kroah-Hartman
2014-09-09 0:41 ` Tony Lindgren
2014-09-09 0:41 ` Tony Lindgren
2014-09-05 19:02 ` [PATCH 04/18] tty: serial: 8250_core: add run time pm Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 05/18] tty: serial: 8250_core: read only RX if there is something in the FIFO Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 06/18] tty: serial: 8250_core: user the ->line argument as a hint in serial8250_find_match_or_unused() Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 07/18] tty: serial: 8250_core: remove UART_IER_RDI in serial8250_stop_rx() Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 08/18] tty: serial: Add 8250-core based omap driver Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-08 16:39 ` Tony Lindgren
2014-09-08 16:39 ` Tony Lindgren
2014-09-05 19:02 ` [PATCH 09/18] tty: serial: 8250_dma: handle error on TX submit Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 10/18] tty: serial: 8250_dma: enqueue RX dma again on completion Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 11/18] tty: serial: 8250_dma: Add a TX trigger workaround for AM33xx Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-08 16:41 ` Tony Lindgren
2014-09-08 16:41 ` Tony Lindgren
2014-09-08 16:45 ` Sebastian Andrzej Siewior
2014-09-08 16:45 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 12/18] tty: serial: 8250_dma: optimize the xmit path due to UART_BUG_DMA_TX Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 13/18] tty: serial: 8250_dma: keep own book keeping about RX transfers Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 14/18] tty: serial: 8250_dma: handle the when UART response while DMA remains idle Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 15/18] tty: serial: 8250_dma: add pm runtime Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 16/18] arm: dts: am33xx: add DMA properties for UART Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 17/18] arm: dts: dra7: " Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-05 19:02 ` [PATCH 18/18] tty: serial: 8250: omap: add dma support Sebastian Andrzej Siewior
2014-09-05 19:02 ` Sebastian Andrzej Siewior
2014-09-08 14:46 ` [PATCH v8 00/18] 8250-core based serial driver for OMAP + DMA Frans Klaver
2014-09-08 14:46 ` Frans Klaver
2014-09-08 14:46 ` Frans Klaver
2014-09-08 15:15 ` Sebastian Andrzej Siewior
2014-09-08 15:15 ` Sebastian Andrzej Siewior
2014-09-08 16:33 ` Sebastian Andrzej Siewior [this message]
2014-09-08 16:33 ` Sebastian Andrzej Siewior
2014-09-08 18:25 ` Frans Klaver
2014-09-08 18:25 ` Frans Klaver
2014-09-08 18:25 ` Frans Klaver
2014-09-08 18:33 ` Frans Klaver
2014-09-08 18:33 ` Frans Klaver
2014-09-08 18:33 ` Frans Klaver
2014-09-09 19:41 ` Sebastian Andrzej Siewior
2014-09-09 19:41 ` Sebastian Andrzej Siewior
2014-09-10 14:15 ` Frans Klaver
2014-09-10 14:15 ` Frans Klaver
2014-09-10 14:15 ` Frans Klaver
2014-09-10 16:56 ` Sebastian Andrzej Siewior
2014-09-10 16:56 ` Sebastian Andrzej Siewior
2014-09-08 17:40 ` Tony Lindgren
2014-09-08 17:40 ` Tony Lindgren
2014-09-08 17:55 ` Tony Lindgren
2014-09-08 17:55 ` Tony Lindgren
2014-09-09 7:33 ` Sebastian Andrzej Siewior
2014-09-09 7:33 ` Sebastian Andrzej Siewior
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