diff options
| author | Alban Browaeys <prahal@yahoo.com> | 2012-02-24 17:12:45 +0000 |
|---|---|---|
| committer | Jesse Barnes <jbarnes@virtuousgeek.org> | 2012-02-24 09:36:25 -0800 |
| commit | aed3f09db39596e539f90b11a5016aea4d8442e1 (patch) | |
| tree | 62e3645dd8cc2be9f1fb4ca6a168f40d3c3c5898 /drivers/devfreq/governor_userspace.c | |
| parent | c0e2ee1bc0cf82eec89e26b7afe7e4db0561b7d9 (diff) | |
drm/i915: Prevent a machine hang by checking crtc->active before loading lut
Before loading the lut (gamma), check the active state of intel_crtc,
otherwise at least on gen2 hang ensue.
This is reproducible in Xorg via:
xset dpms force off
then
xgamma -rgamma 2.0 # freeze.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=44505
Signed-off-by: Alban Browaeys <prahal@yahoo.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: stable@kernel.org
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Diffstat (limited to 'drivers/devfreq/governor_userspace.c')
0 files changed, 0 insertions, 0 deletions