linux-kernel - Re: [PATCH] usbvision: remove (broken) image format conversion

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Date:	Tue, 26 Apr 2011 13:11:54 +0200
From:	Hans de Goede <hdegoede@...hat.com>
To:	Hans Verkuil <hverkuil@...all.nl>
CC:	Ondrej Zary <linux@...nbow-software.org>,
	Joerg Heckenbach <joerg@...kenbach-aw.de>,
	Dwaine Garden <dwainegarden@...ers.com>,
	linux-media@...r.kernel.org,
	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] usbvision: remove (broken) image format conversion

Hi,

On 04/26/2011 08:32 AM, Hans Verkuil wrote:
> On Monday, April 25, 2011 23:23:17 Ondrej Zary wrote:
>> The YVU420 and YUV422P formats are broken and cause kernel panic on use.
>> (YVU420 does not work and sometimes causes "unable to handle paging request"
>> panic, YUV422P always causes "NULL pointer dereference").
>>
>> As V4L2 spec says that drivers shouldn't do any in-kernel image format
>> conversion, remove it completely (except YUYV).
>
> What really should happen is that the conversion is moved to libv4lconvert.
> I've never had the time to tackle that, but it would improve this driver a
> lot.
>
> Would you perhaps be interested in doing that work?
>

Seconded! I would be more then happy to help with the libv4l part (in the form
of review + merging + advice).

Regards,

Hans
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