From: Huang Shijie <b32955@freescale.com>
To: Hector Palacios <hector.palacios@digi.com>
Cc: linux-serial@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
u.kleine-koenig@pengutronix.de, gregkh@linuxfoundation.org,
marex@denx.de, fabio.estevam@freescale.com, shawn.guo@linaro.org,
jslaby@suse.cz
Subject: Re: [PATCH v3 2/2] serial: mxs-auart: wait for FIFO to flush before shutdown
Date: Wed, 9 Oct 2013 15:55:08 +0800 [thread overview]
Message-ID: <52550BDC.70204@freescale.com> (raw)
In-Reply-To: <1380785524-20490-3-git-send-email-hector.palacios@digi.com>
于 2013年10月03日 15:32, Hector Palacios 写道:
> This lead to many bytes not being transferred (specially at low
> baudrates), as they were still in the DMA buffer when the AUART was
> shutdown.
I meet a similar bug with the imx.c which is used for the I.MX.
I did not implement the uart_ops->flush_buffer() hook, so the DMA may fails.
So could we add a new flush_buffer hook for mxs-auart?
Please see the Documentation/serail/driver.
thanks
Huang Shijie
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WARNING: multiple messages have this Message-ID (diff)
From: b32955@freescale.com (Huang Shijie)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 2/2] serial: mxs-auart: wait for FIFO to flush before shutdown
Date: Wed, 9 Oct 2013 15:55:08 +0800 [thread overview]
Message-ID: <52550BDC.70204@freescale.com> (raw)
In-Reply-To: <1380785524-20490-3-git-send-email-hector.palacios@digi.com>
? 2013?10?03? 15:32, Hector Palacios ??:
> This lead to many bytes not being transferred (specially at low
> baudrates), as they were still in the DMA buffer when the AUART was
> shutdown.
I meet a similar bug with the imx.c which is used for the I.MX.
I did not implement the uart_ops->flush_buffer() hook, so the DMA may fails.
So could we add a new flush_buffer hook for mxs-auart?
Please see the Documentation/serail/driver.
thanks
Huang Shijie
next prev parent reply other threads:[~2013-10-09 7:52 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-03 7:32 [PATCH v3 0/2] serial: mxs-auart: wait for DMA buffer to flush before shutdown Hector Palacios
2013-10-03 7:32 ` Hector Palacios
2013-10-03 7:32 ` [PATCH v3 1/2] serial: mxs-auart: set the FIFO size to DMA buffer size Hector Palacios
2013-10-03 7:32 ` Hector Palacios
2013-10-03 7:32 ` [PATCH v3 2/2] serial: mxs-auart: wait for FIFO to flush before shutdown Hector Palacios
2013-10-03 7:32 ` Hector Palacios
2013-10-03 18:17 ` Uwe Kleine-König
2013-10-03 18:17 ` Uwe Kleine-König
2013-10-16 19:54 ` Greg KH
2013-10-16 19:54 ` Greg KH
2013-10-09 7:55 ` Huang Shijie [this message]
2013-10-09 7:55 ` Huang Shijie
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