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From: Greg KH <greg@kroah.com>
To: David Miller <davem@davemloft.net>
Cc: stern@rowland.harvard.edu, david-b@pacbell.net,
	linux-usb-users@lists.sourceforge.net,
	linux-kernel@vger.kernel.org
Subject: Re: [Linux-usb-users] OHCI root_port_reset() deadly loop...
Date: Tue, 16 Oct 2007 15:20:37 -0700	[thread overview]
Message-ID: <20071016222037.GA23793@kroah.com> (raw)
In-Reply-To: <20071016.150631.122031826.davem@davemloft.net>

On Tue, Oct 16, 2007 at 03:06:31PM -0700, David Miller wrote:
> From: Alan Stern <stern@rowland.harvard.edu>
> Date: Tue, 16 Oct 2007 11:23:58 -0400 (EDT)
> 
> > Unfortunately that simply isn't possible.  No matter what you do, the 
> > user can always unload ehci-hcd and then load it back in again.
> 
> Yes we can, by making OHCI and EHCI one module with a top-level
> dispatch.  If you enable both OHCI and EHCI, the top-level
> module will dispatch the host initializations in the correct order.
> 
> This is what I've suggested from the beginning.

Wait, you can have hardware with both EHCI and UHCI too.  Does that mean
we should merge all three together?  I don't think so :)

But perhaps we can order the hardware init stuff from all three together
like this into a separate module they all depend on.  In a way, that's
what the lock tried to do, right?  Are we just not catching all places
we could have hardware being talked to by two modules at the same time?

thanks,

greg k-h

  reply	other threads:[~2007-10-16 22:21 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
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 [this message]
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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