linux-kernel - Re: [PATCH] [media] vp7045: fix buffer setup

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Message-ID: <20110824162618.GA26016@mac.home>
Date:	Wed, 24 Aug 2011 18:26:18 +0200
From:	Tino Keitel <tino.keitel@...ei.de>
To:	Florian Mickler <florian@...kler.org>
Cc:	mchehab@...radead.org, linux-media@...r.kernel.org,
	linux-kernel@...r.kernel.org, "v3.0.y" <stable@...nel.org>
Subject: Re: [PATCH] [media] vp7045: fix buffer setup

On Fri, Aug 19, 2011 at 18:35:21 +0200, Florian Mickler wrote:
> On Wed, 10 Aug 2011 12:05:20 +0200
> Florian Mickler <florian@...kler.org> wrote:
> 
> > dvb_usb_device_init calls the frontend_attach method of this driver which
> > uses vp7045_usb_ob. In order to have a buffer ready in vp7045_usb_op, it has to
> > be allocated before that happens.
> > 
> > Luckily we can use the whole private data as the buffer as it gets separately
> > allocated on the heap via kzalloc in dvb_usb_device_init and is thus apt for
> > use via usb_control_msg.
> > 
> > This fixes a
> > 	BUG: unable to handle kernel paging request at 0000000000001e78
> > 
> > reported by Tino Keitel and diagnosed by Dan Carpenter.
> > 
> > References: https://bugzilla.kernel.org/show_bug.cgi?id=40062
> > Cc: v3.0.y <stable@...nel.org>
> > Tested-by: Tino Keitel <tino.keitel@...ei.de>
> > Signed-off-by: Florian Mickler <florian@...kler.org>
> 
> ...ping...

Even pinger. I can't see the patch in 3.1 git yet, and I'm using the
patch on 3.0 kernels for 2 weeks now without problems.

Regards,
Tino
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