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From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
To: Tomasz Stanislawski <t.stanislaws@samsung.com>
Cc: linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org,
	airlied@redhat.com, m.szyprowski@samsung.com,
	kyungmin.park@samsung.com, sumit.semwal@ti.com,
	daeinki@gmail.com, daniel.vetter@ffwll.ch, robdclark@gmail.com,
	pawel@osciak.com, linaro-mm-sig@lists.linaro.org,
	hverkuil@xs4all.nl, remi@remlab.net, subashrp@gmail.com,
	mchehab@redhat.com
Subject: Re: [PATCH v4 12/14] v4l: vb2-dma-contig: change map/unmap behaviour for importers
Date: Tue, 17 Apr 2012 03:03:37 +0200	[thread overview]
Message-ID: <1587515.L9hht06z7c@avalon> (raw)
In-Reply-To: <1334332076-28489-13-git-send-email-t.stanislaws@samsung.com>

Hi Tomasz,

Thanks for the patch.

On Friday 13 April 2012 17:47:54 Tomasz Stanislawski wrote:
> The DMABUF documentation says that the map_dma_buf callback should return
> scatterlist that is mapped into a caller's address space. In practice,
> almost none of existing implementations of DMABUF exporter does it.  This
> patch breaks the DMABUF specification in order to allow exchange DMABUF
> buffers between other APIs like DRM.

Once again, this means that it's time to either fix the documentation or fix 
the non-compliant drivers.

Could you please read the mail I've sent on 27/03/2012 in the "Minutes from 
V4L2 update call" thread and reply there to avoid scattering the discussion ?

-- 
Regards,

Laurent Pinchart


  reply	other threads:[~2012-04-17  1:03 UTC|newest]

Thread overview: 43+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-04-13 15:47 [PATCH v4 00/14] Integration of videobuf2 with dmabuf Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 01/14] v4l: Add DMABUF as a memory type Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 02/14] Documentation: media: description of DMABUF importing in V4L2 Tomasz Stanislawski
2012-04-16 23:25   ` Laurent Pinchart
2012-04-19 14:32     ` Tomasz Stanislawski
2012-04-19 20:36       ` Mauro Carvalho Chehab
2012-04-19 20:37       ` Mauro Carvalho Chehab
2012-04-20  8:41         ` Tomasz Stanislawski
2012-04-20 10:56           ` Rémi Denis-Courmont
2012-04-20 10:56             ` Rémi Denis-Courmont
2012-04-20 12:25             ` Tomasz Stanislawski
2012-04-20 13:03               ` Rémi Denis-Courmont
2012-04-20 13:03                 ` Rémi Denis-Courmont
2012-04-21 17:10                 ` Laurent Pinchart
2012-04-20 14:48               ` Mauro Carvalho Chehab
2012-04-20 13:36             ` Mauro Carvalho Chehab
2012-04-23  7:50               ` Marek Szyprowski
2012-04-23 14:00                 ` Mauro Carvalho Chehab
2012-04-13 15:47 ` [PATCH v4 03/14] v4l: vb2: add support for shared buffer (dma_buf) Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 04/14] v4l: vb: remove warnings about MEMORY_DMABUF Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 05/14] v4l: vb2-dma-contig: Shorten vb2_dma_contig prefix to vb2_dc Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 06/14] v4l: vb2-dma-contig: Remove unneeded allocation context structure Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 07/14] v4l: vb2-dma-contig: Reorder functions Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 08/14] v4l: vb2-dma-contig: add support for scatterlist in userptr mode Tomasz Stanislawski
2012-04-17  0:43   ` Laurent Pinchart
2012-04-17  0:43     ` Laurent Pinchart
2012-04-20  8:52     ` Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 09/14] v4l: vb2: add prepare/finish callbacks to allocators Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-13 15:47 ` [PATCH v4 10/14] v4l: vb2-dma-contig: add prepare/finish to dma-contig allocator Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 11/14] v4l: vb2-dma-contig: add support for dma_buf importing Tomasz Stanislawski
2012-04-17  0:57   ` Laurent Pinchart
2012-04-17  0:57     ` Laurent Pinchart
2012-04-19 11:38     ` Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 12/14] v4l: vb2-dma-contig: change map/unmap behaviour for importers Tomasz Stanislawski
2012-04-17  1:03   ` Laurent Pinchart [this message]
2012-04-13 15:47 ` [PATCH v4 13/14] v4l: s5p-tv: mixer: support for dmabuf importing Tomasz Stanislawski
2012-04-13 15:47 ` [PATCH v4 14/14] v4l: fimc: " Tomasz Stanislawski
2012-04-20 12:56   ` Sylwester Nawrocki

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