linux-kernel - Re: Regression: v4l/bttv vbi vs iommu

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Date:   Sun, 13 Aug 2023 13:14:18 +0000
From:   "Dr. David Alan Gilbert" <dave@...blig.org>
To:     Hans Verkuil <hverkuil@...all.nl>
Cc:     Christoph Hellwig <hch@....de>, iommu@...ts.linux.dev,
        mchehab@...nel.org, linux-media@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: Regression: v4l/bttv vbi vs iommu

* Hans Verkuil (hverkuil@...all.nl) wrote:
> On 03/02/2023 07:35, Christoph Hellwig wrote:
> > On Wed, Feb 01, 2023 at 09:48:46PM +0100, Hans Verkuil wrote:
> >> In fact, the plan is to replace the old and deprecated videobuf framework by the vb2
> >> framework in the bttv driver in the next 2-3 months or so. That will also automatically
> >> solve this problem.
> > 
> > It would be great to expedite removal of the old videbuf code given
> > how many problems it has.
> 
> We're working on it. A lot of old drivers in drivers/staging/media/deprecated will
> be removed in 6.3, and that leaves the cx18, bttv and saa7146 drivers that still use
> vb1.
> 
> This week I posted patches converting cx18 to vb2 and someone else will work on the
> bttv conversion. We thought we could remove saa7146 as well, but it turns out that
> that is still very much in use (somewhat unexpectedly), so I plan to convert that
> one this month (I hope).
> 
> I aim for removing vb1 in kernel 6.4 or 6.5.

Did this go in, I'm happy to give it a go if this is a world to test.

Dave

> Regards,
> 
> 	Hans
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