tree 0965b8d142a1a1c70d65be61f5478807fb8daff0
parent 5b40f871158da7aaccff442645dae8b97c2e4d50
author Florian Mickler <florian@mickler.org> 1239051341 +0200
committer Eric Anholt <eric@anholt.net> 1239211099 -0700

drm/i915: Fix use of uninitialized var in 40a5f0de

i915_gem_put_relocs_to_user returned an uninitialized value which
got returned to userspace. This caused libdrm in my setup to never
get out of a do{}while() loop retrying i915_gem_execbuffer.

result was hanging X, overheating of cpu and 2-3gb of logfile-spam.

This patch adresses the issue by
 1. initializing vars in this file where necessary
 2. correcting wrongly interpreted return values of copy_[from/to]_user

Signed-off-by: Florian Mickler <florian@mickler.org>
[anholt: cleanups of unnecessary changes, consistency in APIs]
Signed-off-by: Eric Anholt <eric@anholt.net>