From: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Date: Tue, 8 May 2012 14:46:44 +0000 (-0300)
Subject: [media] V4L: mx2-camera: avoid overflowing 32-bits
X-Git-Tag: v3.5-rc1~104^2~106
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=67e86524b907ed2189f4875cdbe7a5249c71ebb2;p=pandora-kernel.git

[media] V4L: mx2-camera: avoid overflowing 32-bits

In mx2_camera_try_fmt(), when applying i.MX25 restrictions to frame sizes,
the height is checked to be <= 0xffff. But later an integer multiplication
height * 4 * 0x3ffff is performed, which will overflow even for bounded
height values. This patch switches to using 64-bit multiplication and
division to avoid overflowing.

Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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