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Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP

From Fabio Estevam <festevam@gmail.com>
Newsgroups linux.kernel
Subject Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP
Date 2017-06-30 14:20 +0200
Message-ID <tY33Y-5nU-3@gated-at.bofh.it> (permalink)
References <tUtzJ-238-45@gated-at.bofh.it> <tUu2K-2t3-21@gated-at.bofh.it> <tUOut-754-3@gated-at.bofh.it> <tUOE9-78N-9@gated-at.bofh.it>
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Hi Clemens,

On Wed, Jun 21, 2017 at 11:12 AM, Fabio Estevam <festevam@gmail.com> wrote:

>> I'd also prefer fixing the underlying problem.
>
> Yes, that would be much better.

Just saw Romain's patch series that addresses several imx uart DMA issues:
http://lists.infradead.org/pipermail/linux-arm-kernel/2017-June/516845.html

If you have a chance, please give it a try to see if it helps on the
RS485 DMA case.

Regards,

Fabio Estevam

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Thread

[PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-06-20 17:50 +0200
  Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP Fabio Estevam <festevam@gmail.com> - 2017-06-20 18:20 +0200
    Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP Fabio Estevam <festevam@gmail.com> - 2017-06-21 01:50 +0200
      Re: serial: imx: disable DMA for RS-485 on i.MX6 SMP Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-07-02 22:50 +0200
        Re: serial: imx: disable DMA for RS-485 on i.MX6 SMP Fabio Estevam <festevam@gmail.com> - 2017-07-03 01:10 +0200
    Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-06-21 16:10 +0200
      Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP Fabio Estevam <festevam@gmail.com> - 2017-06-21 16:20 +0200
        Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP Fabio Estevam <festevam@gmail.com> - 2017-06-30 14:20 +0200
          Re: [PATCH] serial: imx: disable DMA for RS-485 on i.MX6 SMP Clemens Gruber <clemens.gruber@pqgruber.com> - 2017-07-02 22:20 +0200
  AW: [Customers.Eckelmann] [PATCH] serial: imx: disable DMA for  RS-485 on i.MX6 SMP "Schenk, Gavin" <G.Schenk@eckelmann.de> - 2017-06-23 11:40 +0200

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