From: Greg KH <greg@kroah.com>
To: Paul Mackerras <paulus@samba.org>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH] USB root hub polling and suspend
Date: Tue, 6 Aug 2002 21:43:48 -0700 [thread overview]
Message-ID: <20020807044348.GA11412@kroah.com> (raw)
In-Reply-To: <15696.21218.406438.634687@argo.ozlabs.ibm.com>
On Wed, Aug 07, 2002 at 08:51:14AM +1000, Paul Mackerras wrote:
> Currently with 2.5, when I suspend and resume my powerbook, I find
> that the USB subsystem no longer sees root hub events, i.e. it doesn't
> notice when I plug in a new USB device (it doesn't notice when I
> unplug a device either but of course the driver for the device sees
> that it is no longer responding).
>
> It turns out that what happens is that the root hub timer goes off
> after the OHCI driver has done its suspend stuff. The timer routine
> sees that the HCD is not running at the moment and doesn't schedule
> another timeout. Hence the series of timeouts stops.
>
> The patch below fixes the problem for me. Comments welcome.
Thanks, I've added it to my tree and will send it on to Linus.
greg k-h
prev parent reply other threads:[~2002-08-07 4:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-08-06 22:51 [PATCH] USB root hub polling and suspend Paul Mackerras
2002-08-07 4:43 ` Greg KH [this message]
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