From: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Date: Sun, 7 Jul 2013 08:40:19 +0000 (+0200)
Subject: drm/nouveau: do not allow negative sizes for now
X-Git-Tag: v3.11-rc3~23^2~1^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0108bc808107b97e101b15af9705729626be6447;p=pandora-kernel.git

drm/nouveau: do not allow negative sizes for now

The API allows up to 64-bits allocations, but size is handled as int
inside nouveau almost everywhere. Until this is fixed it's better to
prevent negative sizes.

The 256 kB before INT_MAX is paranoia, because of the large page
aligning below that could flip it above INT_MAX.

Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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