linux-kernel - linux-next: build failure after merge of the v4l-dvb tree

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Date:	Mon, 26 Nov 2012 13:31:53 +1100
From:	Stephen Rothwell <sfr@...b.auug.org.au>
To:	Mauro Carvalho Chehab <mchehab@...radead.org>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Tomasz Stanislawski <t.stanislaws@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Hans Verkuil <hans.verkuil@...co.com>
Subject: linux-next: build failure after merge of the v4l-dvb tree

Hi Mauro,

After merging the v4l-dvb tree, today's linux-next build (x86_64
allmodconfig) failed like this:

ERROR: "dma_common_get_sgtable" [drivers/media/v4l2-core/videobuf2-dma-contig.ko] undefined!

Caused by commit 9ef2cbeb8192 ("[media] v4l: vb2-dma-contig: add support
for DMABUF exporting").  dma_common_get_sgtable() is called from the
inline dma_get_sgtable_attrs() and dma_get_sgtable_attrs() is "called
from" dma_get_sgtable().  dma_common_get_sgtable() is only defined if
ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY is set which depends on
CONFIG_HAVE_GENERIC_DMA_COHERENT being set which it isn't for this build.

I have used the v4l-dvb tree form next-20121026 for today.

Please try testing your tree with an x86_64 allmodconfig build.
-- 
Cheers,
Stephen Rothwell                    sfr@...b.auug.org.au

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