From: David Miller <davem@davemloft.net>
To: stern@rowland.harvard.edu
Cc: greg@kroah.com, david-b@pacbell.net,
linux-kernel@vger.kernel.org,
linux-usb-users@lists.sourceforge.net
Subject: Re: [Linux-usb-users] OHCI root_port_reset() deadly loop...
Date: Tue, 09 Oct 2007 14:27:19 -0700 (PDT) [thread overview]
Message-ID: <20071009.142719.68041626.davem@davemloft.net> (raw)
In-Reply-To: <Pine.LNX.4.44L0.0710091440130.4783-100000@iolanthe.rowland.org>
From: Alan Stern <stern@rowland.harvard.edu>
Date: Tue, 9 Oct 2007 14:42:34 -0400 (EDT)
> On Tue, 9 Oct 2007, Greg KH wrote:
>
> > > Anyway, it certainly would be easy enough to make port resets mutually
> > > exclusive with EHCI initialization. That would work on any platform,
> > > PCI or not.
> >
> > That's a good idea, any thoughts as to how to do this? I think I can
> > find some Intel and Dell people who would be glad to test this out if
> > you have a proposed patch.
>
> Here is a proposed patch. I haven't tried running it, but it compiles
> okay.
Are we sure that this is the only event that causes the conflicts between
the EHCI and it's companion virtual OHCI/UHCI host(s)?
Is there a chip reset done to the EHCI controller early during device
probe that could cause problems too?
I know it's grotty, but I definitely feel more comfortable with the
fix involving making sure EHCI loads and fully probes first.
next prev parent reply other threads:[~2007-10-09 21:27 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-07 6:53 David Miller
2007-10-07 7:31 ` David Brownell
2007-10-07 7:51 ` David Miller
2007-10-08 23:54 ` David Miller
2007-10-09 3:10 ` Greg KH
2007-10-09 3:16 ` David Miller
2007-10-09 3:34 ` David Brownell
2007-10-09 3:42 ` David Miller
2007-10-09 4:39 ` Greg KH
2007-10-09 4:47 ` David Miller
2007-10-09 5:11 ` Benjamin Herrenschmidt
2007-10-09 6:06 ` Greg KH
2007-10-09 19:22 ` [linux-usb-devel] " David Brownell
2007-10-10 15:32 ` Alan Stern
2007-10-09 5:00 ` David Brownell
2007-10-09 5:23 ` David Miller
2007-10-09 6:43 ` Benjamin Herrenschmidt
2007-10-09 18:48 ` David Brownell
2007-10-09 16:01 ` [Linux-usb-users] " Alan Stern
2007-10-09 17:39 ` Greg KH
2007-10-09 18:42 ` Alan Stern
2007-10-09 18:59 ` David Brownell
2007-10-09 21:27 ` David Miller [this message]
2007-10-09 21:43 ` David Brownell
2007-10-09 22:00 ` David Miller
2007-10-10 4:35 ` David Miller
2007-10-15 22:01 ` David Miller
2007-10-15 23:39 ` David Brownell
2007-10-15 23:58 ` David Miller
2007-10-16 15:23 ` Alan Stern
2007-10-16 22:06 ` David Miller
2007-10-16 22:20 ` Greg KH
2007-10-17 15:56 ` Alan Stern
2007-10-16 22:08 ` David Miller
2007-10-17 15:51 ` Alan Stern
2007-10-17 23:03 ` David Miller
2007-10-18 14:28 ` Alan Stern
2007-10-16 18:26 ` David Brownell
2007-10-09 4:09 ` David Brownell
2007-10-09 5:13 ` Benjamin Herrenschmidt
2007-10-09 5:26 ` David Miller
2007-10-09 6:37 ` Benjamin Herrenschmidt
2007-10-09 4:36 ` David Brownell
2007-10-09 4:44 ` David Miller
2007-10-09 16:38 ` David Brownell
2007-10-09 20:41 ` David Miller
2007-10-09 20:46 ` Greg KH
2007-10-09 21:05 ` David Brownell
2007-10-09 21:09 ` David Brownell
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