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SubjectRe: FDTI-SIO: kernel-oops after resume
On Wed, Jun 10, 2009 at 09:24:17AM +0100, <Martin Zwickel> bubbled:
> On Wed, Jun 10, 2009 at 08:50:18AM +0100, <Andrew Morton> bubbled:
> > On Tue, 9 Jun 2009 08:39:48 +0200 Martin Zwickel <martin.zwickel@novabasedigitaltv.de> wrote:
> >
> > > My kernel runs with SMP and HIGHMEM if it matters:
> > > Linux tt-business 2.6.29.4 #3 SMP PREEMPT Fri Jun 5 00:03:39 WEST 2009 i686 Intel(R) Core(TM)2 Duo CPU T7300 @ 2.00GHz GenuineIntel GNU/Linux
> > >
> >
> > The oops is very very similar to the one which Daniel Mack reported,
> > and which was fixed by
> >
> > commit c16199fcd341f10147eb2e29a60aed41ceca55b4
> > Author: Alan Stern <stern@rowland.harvard.edu>
> > Date: Thu Apr 30 10:06:19 2009 -0400
> >
> > usb-serial: ftdi_sio: fix reference counting of ftdi_private
> >
> > but your 2.6.29.4 contained that fix, so it seems that we still have a
> > problem here?
>
> Could be, or I'm doing something wrong.
>
> I will clean the kernel, rebuild 2.6.29.4, reboot, try to crash it and
> let you know.
> If I should try some patches, please let me know.

I have seen that 2.6.30 is out. I'm now running with 2.6.30 and
tried to crash the ftdi_sio driver, I had no luck till now.

So it seems to be fixed at least in 2.6.30, and I believe it was this
patch:

commit 80193195f87ebca6d7417516d6edeb3969631c15
Author: David Woodhouse <dwmw2@infradead.org>
Date: Mon May 18 13:07:35 2009 +0100

Fix oops on close of hot-unplugged FTDI serial converter


Best regards,
Martin


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