From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 31 Jan 2014 11:34:58 +0000 (+0000)
Subject: drm/i915: Treat using a purged buffer as a source of EFAULT
X-Git-Tag: v3.15-rc1~51^2~62^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8c99e57d3926959dd940e834da6fa707601ba7e5;p=pandora-kernel.git

drm/i915: Treat using a purged buffer as a source of EFAULT

Since a purged buffer is one without any associated pages, attempting to
use it should generate EFAULT rather than EINVAL, as it is not strictly
an invalid parameter.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
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