From: David Brownell <david-b@pacbell.net>
To: Greg KH <greg@kroah.com>
Cc: amruth_pv@yahoo.com, Alan Stern <stern@rowland.harvard.edu>,
Karsten Wiese <fzu@wemgehoertderstaat.de>,
Oliver Neukum <oliver@neukum.org>,
USB list <linux-usb@vger.kernel.org>,
Kernel development list <linux-kernel@vger.kernel.org>
Subject: Re: USB Serial device disconnect causes IRQ disable after using ehci controller halted
Date: Wed, 27 Aug 2008 11:37:23 -0700 [thread overview]
Message-ID: <200808271137.24557.david-b@pacbell.net> (raw)
In-Reply-To: <20080827175325.GB31820@kroah.com>
On Wednesday 27 August 2008, Greg KH wrote:
>
> > As noted by Stefan Neis <Stefan.Neis@kobil.com>, we had a recent
> > regression with EHCI periodic transfers, in some (seemingly not
> > all that common) cases.
> >
> > The root cause was that the schedule activation was only loosely
> > coupled to the addition or removal of transfers, so two different
> > execution contexts could both think they had to deactivate (or
> > conversely activate) the schedule. So this fix tightens that
> > coupling, managing it more like a refcount.
> >
> > Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
>
> Do you want me to also apply this one? If so, for .27 or .28?
It should get into 2.6.27, and probably 26.stable ... assuming
that it checks out properly. A somewhat cruftier version resolved
Stefan's problem, but I'd rather not merge that one. Hmm, I'll
ask Stefan to confirm this version.
- Dave
prev parent reply other threads:[~2008-08-27 18:39 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200808071010.27019.oliver@neukum.org>
2008-08-20 19:34 ` USB Serial device disconnect causes IRQ disable amruth
2008-08-20 20:23 ` Oliver Neukum
2008-08-21 0:18 ` amruth
2008-08-21 5:19 ` Oliver Neukum
2008-08-21 6:03 ` amruth
2008-08-21 6:09 ` Oliver Neukum
2008-08-21 6:18 ` amruth
2008-08-21 6:28 ` Oliver Neukum
2008-08-21 21:02 ` USB Serial device disconnect causes IRQ disable details captured amruth
2008-08-21 21:20 ` Alan Stern
2008-08-21 21:52 ` amruth
2008-08-25 17:50 ` USB Serial device disconnect causes IRQ disable not working after patch amruth
2008-08-25 18:50 ` Alan Stern
2008-08-25 21:12 ` USB Serial device disconnect causes IRQ disable after using ehci_info amruth
2008-08-26 1:56 ` amruth
2008-08-26 15:01 ` Alan Stern
2008-08-26 17:18 ` amruth
2008-08-26 19:00 ` USB Serial device disconnect causes IRQ disable after using ehci controller halted amruth
2008-08-26 21:14 ` Alan Stern
2008-08-26 21:43 ` David Brownell
2008-08-26 22:56 ` amruth
2008-08-27 6:35 ` David Brownell
2008-08-27 17:53 ` Greg KH
2008-08-27 18:37 ` David Brownell [this message]
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