Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support") drops data

From	Frank Rowand <frowand.list@gmail.com>
Newsgroups	linux.kernel
Subject	Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support") drops data
Date	2016-04-23 19:30 +0200
Message-ID	<rr9xv-6Os-17@gated-at.bofh.it> (permalink)
References	<rpNfI-6EG-7@gated-at.bofh.it> <rpTuO-3ce-13@gated-at.bofh.it> <rq3ua-2ta-11@gated-at.bofh.it> <rqbi2-Ai-5@gated-at.bofh.it> <rqtHY-6XI-11@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

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

Back to linux.kernel | Previous | Next — Previous in thread | Find similar | Unroll thread

Thread

regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support")  drops data Frank Rowand <frowand.list@gmail.com> - 2016-04-20 01:30 +0200
  Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support") drops data Ivan Ivanov <iivanov.xz@gmail.com> - 2016-04-20 08:10 +0200
    Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support")  drops data Frank Rowand <frowand.list@gmail.com> - 2016-04-20 18:50 +0200
      Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support")  drops data Frank Rowand <frowand.list@gmail.com> - 2016-04-21 03:10 +0200
        Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support")  drops data Andy Shevchenko <andy.shevchenko@gmail.com> - 2016-04-21 22:50 +0200
          Re: regression: 3a878c430fd6 ("tty: serial: msm: Add TX DMA support")  drops data Frank Rowand <frowand.list@gmail.com> - 2016-04-23 19:30 +0200

csiph-web