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From: Frank Rowand <frowand.list@gmail.com>
To: Ivan Ivanov <iivanov.xz@gmail.com>
Cc: Andy Shevchenko <andy.shevchenko@gmail.com>,
	Peter Hurley <peter@hurleysoftware.com>,
	"Krogerus, Heikki" <heikki.krogerus@linux.intel.com>,
	Andy Gross <agross@codeaurora.org>,
	David Brown <davidb@codeaurora.org>,
	srinivas.kandagatla@linaro.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jslaby@suse.com>, Pawel Moll <pawel.moll@arm.com>,
	Mark Rutland <mark.rutland@arm.com>,
	Linux Kernel list <linux-kernel@vger.kernel.org>,
	"linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>
Subject: Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support") drops data
Date: Sat, 23 Apr 2016 10:24:00 -0700	[thread overview]
Message-ID: <571BAFB0.1080303@gmail.com> (raw)
In-Reply-To: <CAHp75Vdu6+qLHe9tTK5BE3ec5Mvz5Z0e4DvLc8ewjjVbSs-BdQ@mail.gmail.com>

On 4/21/2016 1:42 PM, Andy Shevchenko wrote:
> On Thu, Apr 21, 2016 at 4:00 AM, Frank Rowand <frowand.list@gmail.com> wrote:
>> On 4/20/2016 9:48 AM, Frank Rowand wrote:

< snip >

>> I'm not sure if the driver was in DMA or PIO mode, both
>> before the change and after.  This seems like a rather
>> important question to answer, so I'll try to verify
>> that tonight.

I was in PIO mode.

I found the problem and submitted a fix.

   [PATCH 0/2] tty: serial: msm_serial regression and add info message
   [PATCH 1/2] tty: serial: msm_serial regression fix data corruption
   [PATCH 2/2] tty: serial: msm_serial add info message


< snip >

-Frank

      reply	other threads:[~2016-04-23 17:24 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-19 23:23 regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support") drops data Frank Rowand
2016-04-20  6:07 ` Ivan Ivanov
2016-04-20  6:07   ` Ivan Ivanov
     [not found]   ` <EEBBF78A-33BB-4ACD-8CBF-285E1149FB9F-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2016-04-20 16:48     ` Frank Rowand
2016-04-20 16:48       ` Frank Rowand
2016-04-21  1:00       ` Frank Rowand
2016-04-21 20:42         ` Andy Shevchenko
2016-04-23 17:24           ` Frank Rowand [this message]

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