linux-kernel - Re: [ivtv-devel] [PATCH AVAIL.]ivtv:Crash 2.6.26 with KUROTOSIKOU CX23416-STVLP

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Message-Id: <200807171758.19702.hverkuil@xs4all.nl>
Date:	Thu, 17 Jul 2008 17:58:19 +0200
From:	Hans Verkuil <hverkuil@...all.nl>
To:	ivtv-devel@...vdriver.org
Cc:	Kyuma Ohta <whatisthis.sowhat@...il.com>,
	Linux Kernel list <linux-kernel@...r.kernel.org>,
	Video4Linux ML <video4linux-list@...hat.com>
Subject: Re: [ivtv-devel] [PATCH AVAIL.]ivtv:Crash 2.6.26 with KUROTOSIKOU CX23416-STVLP

On Thursday 17 July 2008 17:20:14 Kyuma Ohta wrote:
> Hi,
> I'm testing 2.6.26/amd64 with Athlon64 x2 Box with
> KUROTOSIKOU CX23416-STVLP,always crash ivtv driver
> when loading upd64083 driver.
> I checked crash dump,this issue cause of loading
> upd64083.ko with i2c_probed_new_device().
> So,I fixed ivtv-i2c.c of 2.6.26 vanilla,and
> fixed *pretty* differnce memory allocation,structure
> of upd64083.c.
> I'm running patched 2.6.26 vanilla with below attached
> patches over 24hrs,and over 10hrs recording from ivtv,
> not happend anything;-)
> Please apply below to 2.6.26.x..
>
> Best regards,
> Ohta.

Hi Ohta,

Thanks for the patches. If I'm not mistaken there are several variants 
of this card: without upd* devices, only with upd64083 and with both 
upd devices. Which one do you have?

Can you also show the dmesg output when ivtv loads?

Looking at the four patches, I would say that the only relevant patch is 
the fix-probing patch. If you try it with only that one applied, does 
it still work correct for you? Note that this patch will not work with 
a KUROTOSIKOU card that has no upd* devices at all.

Can you also give me the kernel backtrace when you load ivtv with the 
vanilla 2.6.26? I do not quite understand why it should crash.

Regards,

	Hans
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