From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Tue, 12 Jun 2012 13:18:16 +0000 (-0300)
Subject: [media] v4l: vb2-dma-contig: fail if user ptr buffer is not correctly aligned
X-Git-Tag: omap-for-v3.8/fixes-for-merge-window-v4-signed~21^2^2~29
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d81e870d5afa1b0a95ea94c4052d3c7e973fae8c;p=pandora-kernel.git

[media] v4l: vb2-dma-contig: fail if user ptr buffer is not correctly aligned

The DMA transfer must be aligned to a specific value. If userptr is not aligned
to DMA requirements then unexpected corruptions of the memory may occur before
or after a buffer.  To prevent such situations, all unligned userptr buffers
are rejected at VIDIOC_QBUF.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
---

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