linux-kernel - Re: [PATCH v5 5/8] iio: core: Add new DMABUF interface infrastructure

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Date: Sat, 27 Jan 2024 16:50:44 +0000
From: Jonathan Cameron <jic23@...nel.org>
To: Paul Cercueil <paul@...pouillou.net>
Cc: Lars-Peter Clausen <lars@...afoo.de>, Sumit Semwal
 <sumit.semwal@...aro.org>, Christian König
 <christian.koenig@....com>, Vinod Koul <vkoul@...nel.org>, Jonathan Corbet
 <corbet@....net>, linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
 dmaengine@...r.kernel.org, linux-iio@...r.kernel.org,
 linux-media@...r.kernel.org, dri-devel@...ts.freedesktop.org,
 linaro-mm-sig@...ts.linaro.org, Nuno Sá
 <noname.nuno@...il.com>, Michael Hennerich <Michael.Hennerich@...log.com>
Subject: Re: [PATCH v5 5/8] iio: core: Add new DMABUF interface
 infrastructure


> > > +	iio_buffer_dmabuf_put(attach);
> > > +
> > > +out_dmabuf_put:
> > > +	dma_buf_put(dmabuf);  
> > As below. Feels like a __free(dma_buf_put) bit of magic would be a
> > nice to have.  
> 
> I'm working on the patches right now, just one quick question.
> 
> Having a __free(dma_buf_put) requires that dma_buf_put is first
> "registered" as a freeing function using DEFINE_FREE() in <linux/dma-
> buf.h>, which has not been done yet.  
> 
> That would mean carrying a dma-buf specific patch in your tree, are you
> OK with that?
Needs an ACK from appropriate maintainer, but otherwise I'm fine doing
so.  Alternative is to circle back to this later after this code is upstream.

> 
> Cheers,
> -Paul

>