diff options
| author | Alban Browaeys <prahal@yahoo.com> | 2012-02-24 17:12:45 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-12 12:31:22 -0700 |
| commit | c7554566fdd9b0aaff15dfda98e3a6706408a825 (patch) | |
| tree | 2e2f4de4dfe34f0785ffed66d864192297109efa /arch/arm | |
| parent | da42eb9e4a1ee35439534941c89918a8d8a9ee59 (diff) | |
drm/i915: Prevent a machine hang by checking crtc->active before loading lut
commit aed3f09db39596e539f90b11a5016aea4d8442e1 upstream.
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>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm')
0 files changed, 0 insertions, 0 deletions