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From: erik quanstrom <quanstro@quanstro.net>
To: 9fans@9fans.net
Subject: Re: [9fans] ehci/uhci interrupts
Date: Fri,  2 May 2014 14:34:35 -0400	[thread overview]
Message-ID: <fbf8c2424bdbb826b2260096faf74b89@ladd.quanstro.net> (raw)
In-Reply-To: <cc8299f61d4bb42cdff9112af57eeacb@brasstown.quanstro.net>

On Fri May  2 11:28:41 EDT 2014, quanstro@quanstro.net wrote:
> it appears that uhci is causing spurious ehci interrupts, or at least
> ehci/uhci are causing each other to ring.  i haven't tracked down
> the fundamental issue yet.  but this appears to be related to the
> ehci/uhci subordinate issue, and the Callmine setting.

problem found.  patch appled.  if a ehci controller is 64-bit capable,
one must turn off 64-bit capabilities on all controllers before initializing
any of them.

- erik



  reply	other threads:[~2014-05-02 18:34 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-02 15:26 erik quanstrom
2014-05-02 18:34 ` erik quanstrom [this message]
2014-05-03  5:14   ` lucio
2014-05-03  9:42     ` tlaronde
2014-05-03 19:45       ` erik quanstrom
2014-05-04  5:12         ` lucio
2014-05-04 10:41           ` tlaronde
2014-05-04 19:29             ` erik quanstrom
2014-05-05 10:50               ` tlaronde
2014-05-04 17:14           ` erik quanstrom

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