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Re: [PATCH 3/3] serial: 8250: omap: restore registers on shutdown

From	Charles Manning <cdhmanning@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 3/3] serial: 8250: omap: restore registers on shutdown
Date	2015-08-07 02:50 +0200
Message-ID	<pUE1b-aH-9@gated-at.bofh.it> (permalink)
References	(6 earlier) <pTJ2Y-1c2-49@gated-at.bofh.it> <pUst5-oN-21@gated-at.bofh.it> <pUsCK-zY-21@gated-at.bofh.it> <pUtSa-2in-9@gated-at.bofh.it> <pUy5s-d9-1@gated-at.bofh.it>
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On Fri, Aug 7, 2015 at 6:22 AM, Peter Hurley <peter@hurleysoftware.com> wrote:
> I agree; this is what we should do first because someone might want it
> for backports.

Got an idea how far this can be ported back?

I'm being hampered by severe performance issues on a
beagleboneblack-like device (am335x) running on 3.18 kernel.

I have a 1Mbaud link that is getting packets of about 22 bytes @800 Hz
and old omap-serial is keeping up, but killing the CPU.

I'm considering backporting 8250_omap as a get out of jail.

Opinions appreciated.

Thanks.
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Re: [PATCH 3/3] serial: 8250: omap: restore registers on shutdown Peter Hurley <peter@hurleysoftware.com> - 2015-08-06 14:30 +0200
  Re: [PATCH 3/3] serial: 8250: omap: restore registers on shutdown Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2015-08-06 14:40 +0200
    Re: [PATCH 3/3] serial: 8250: omap: restore registers on shutdown Sebastian Andrzej Siewior <bigeasy@linutronix.de> - 2015-08-06 16:00 +0200
      Re: [PATCH 3/3] serial: 8250: omap: restore registers on shutdown Peter Hurley <peter@hurleysoftware.com> - 2015-08-06 20:30 +0200
        Re: [PATCH 3/3] serial: 8250: omap: restore registers on shutdown Charles Manning <cdhmanning@gmail.com> - 2015-08-07 02:50 +0200

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