linux-kernel - Re: [PATCH RFT/RFC 01/49] staging: media: Revert "media: zoran: remove deprecated driver"

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Message-ID: <20200922191538.GB12261@Red>
Date:   Tue, 22 Sep 2020 21:15:38 +0200
From:   LABBE Corentin <clabbe@...libre.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     gregkh@...uxfoundation.org, laurent.pinchart@...net.be,
        mchehab@...nel.org, devel@...verdev.osuosl.org,
        linux-kernel@...r.kernel.org, linux-media@...r.kernel.org
Subject: Re: [PATCH RFT/RFC 01/49] staging: media: Revert "media: zoran:
 remove deprecated driver"

On Tue, Sep 22, 2020 at 06:16:01AM +0100, Christoph Hellwig wrote:
> > +		fh->buffers.buffer[i].v4l.fbuffer = mem;
> > +		fh->buffers.buffer[i].v4l.fbuffer_phys = virt_to_phys(mem);
> > +		fh->buffers.buffer[i].v4l.fbuffer_bus = virt_to_bus(mem);
> > +		for (off = 0; off < fh->buffers.buffer_size;
> > +		     off += PAGE_SIZE)
> > +			SetPageReserved(virt_to_page(mem + off));
> 
> This messing with SetPageReserved needs to go away before we bring
> back the driver, even for staging.

The whole old buffer management (with some virt_to_phys, virt_to_bus, SetPageReserved, etc...) is removed in "zoran: convert to vb2".

Regards