From: David Brownell <david-b@pacbell.net>
To: Greg KH <greg@kroah.com>, colin@colino.net
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: kernel 2.6 : cdc_acm problem
Date: Mon, 10 Nov 2003 04:21:38 -0800 [thread overview]
Message-ID: <3FAF82D2.2050004@pacbell.net> (raw)
In-Reply-To: <20031109225027.GA2425@kroah.com>
>>The problem is that cdc_acm calls a "softirq-only" routine
>>in a hardirq context. See this patch:
>>
>>http://marc.theaimsgroup.com/?l=linux-usb-devel&m=106764585001038&w=2
>>
>>It's not clear that'll make it into 2.6.0-final.
>
>
> I've not planned to submit it for 2.6.0 as it's a relativly big change,
> and I don't have the hardware to test it out. Anyone have any other
> thoughts about this?
Doesn't seem big to me. It could be shrunk a smidgeon, but
that's the version that's gotten the positive test results.
The folk who have this kind of hardware have reported this
happening for quite a few months now, and it does seem to
fill up log buffers with catastrophic-seeming stack traces.
Colin, does it fix your problem? Can you eke more than
twenty minutes from your laptop battery now? :)
- Dave
next prev parent reply other threads:[~2003-11-10 12:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-09 17:21 kernel 2.6 : cdc_acm problem David Brownell
2003-11-09 22:50 ` Greg KH
2003-11-10 12:21 ` David Brownell [this message]
2003-11-11 12:39 ` Colin Leroy
[not found] <Q1or.1EU.17@gated-at.bofh.it>
[not found] ` <Q6Hy.T5.11@gated-at.bofh.it>
2003-11-10 19:16 ` Peter Matthias
-- strict thread matches above, loose matches on Subject: below --
2003-11-09 11:20 Colin Leroy
2003-11-09 11:11 ` Benjamin Herrenschmidt
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