From: Mauro Carvalho Chehab <mchehab@redhat.com>
Date: Fri, 19 Apr 2013 10:18:01 +0000 (-0300)
Subject: [media] media: videobuf2: fix the length check for mmap
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~104^2^2~21
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7f8414594e4755234fd0ca415630cfe2dfab42ce;p=pandora-kernel.git

[media] media: videobuf2: fix the length check for mmap

Memory maps typically require that the buffer size to be page
aligned. Currently, two memops drivers do such alignment
internally, but videobuf-vmalloc doesn't.
Also, the buffer overflow check doesn't take it into account.
So, instead of doing it at each memops driver, enforce it at
VB2 core.

Reported-by: Prabhakar lad <prabhakar.csengg@gmail.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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