From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: David Brownell <david-b@pacbell.net>
Cc: greg@kroah.com, davem@davemloft.net,
linux-usb-users@lists.sourceforge.net,
linux-kernel@vger.kernel.org
Subject: Re: OHCI root_port_reset() deadly loop...
Date: Tue, 09 Oct 2007 16:43:04 +1000 [thread overview]
Message-ID: <1191912184.6355.66.camel@pasglop> (raw)
In-Reply-To: <20071009050019.C6C6023718A@adsl-69-226-248-13.dsl.pltn13.pacbell.net>
On Mon, 2007-10-08 at 22:00 -0700, David Brownell wrote:
> > > > The old /etc/hotplug/usb.rc script made sure to load those modules
> > > > in the correct order: EHCI first.
> > >
> > > I expected to find something cute attempting to handle this under
> > > /etc/udev, I have failed so far :-)
> >
> > No, nothing cute in udev itself, but it seems that all distros that I
> > know of have a "load these modules now" type setting in their init
> > scripts that can be used here.
> >
> > I can't think of a way to enforce this load order on the modules
> > themselves due to the fact that OHCI might not even be needed for EHCI
> > devices on UHCI (Intel) based chipsets :(
>
> Assuming PCI is present, /sys/bus/pci/devices/*/class can tell
> if EHCI is present (0x0c0320) ... if so, load that driver.
> Then repeat for OHCI (0x0c0310) and UHCI (0x0c0300).
That will not work for all of the non-PCI implementations though.
Ben.
next prev parent reply other threads:[~2007-10-09 6:43 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-07 6:53 OHCI root_port_reset() deadly loop 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 [this message]
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
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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