linux-kernel - [media] videobuf-dma-contig: fix vm_iomap

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Message-Id: <1395918426-27787-1-git-send-email-mahaijuns@gmail.com>
Date:	Thu, 27 Mar 2014 19:07:05 +0800
From:	Ma Haijun <mahaijuns@...il.com>
To:	linux-media@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:	Mauro Carvalho Chehab <m.chehab@...sung.com>,
	Hans Verkuil <hverkuil@...all.nl>,
	Al Viro <viro@...IV.linux.org.uk>,
	Ma Haijun <mahaijuns@...il.com>
Subject: [media] videobuf-dma-contig: fix vm_iomap_memory() call

Hi all,

This is a trivial fix, but I think the patch itself has problem too. 
The function requires a phys_addr_t, but we feed it with a dma_handle_t.
AFAIK, this implicit conversion does not always work.
Can I use virt_to_phys(mem->vaddr) to get the physical address instead?
(mem->vaddr and mem->dma_handle are from dma_alloc_coherent)

Regards

Ma Haijun

Ma Haijun (1):
  [media] videobuf-dma-contig: fix incorrect argument to
    vm_iomap_memory() call

 drivers/media/v4l2-core/videobuf-dma-contig.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
1.8.3.2

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