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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2013-10-10 21:58:50 +0100 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2013-10-10 23:12:05 +0200 |
| commit | c0951f0c97bc1528262a92b193fed7942cc6c54c (patch) | |
| tree | 6a05fd856cd002d94fd75599b6ce4045d270be8c /drivers/gpu/drm/i915/i915_drv.h | |
| parent | e147accbd19f55489dabdcc4dc3551cc3e3f2553 (diff) | |
| download | lwn-c0951f0c97bc1528262a92b193fed7942cc6c54c.tar.gz lwn-c0951f0c97bc1528262a92b193fed7942cc6c54c.zip | |
drm/i915: Avoid tweaking RPS before it is enabled
As we delay the initial RPS enabling (upon boot and after resume), there
is a chance that we may start to render and trigger RPS boosts before we
set up the punit. Any changes we make could result in inconsistent
hardware state, with a danger of causing undefined behaviour. However,
as the boosting is a optional tweak to RPS, we can simply ignore it
whilst RPS is not yet enabled.
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i915/i915_drv.h')
| -rw-r--r-- | drivers/gpu/drm/i915/i915_drv.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h index 9cac93c41e10..36b82cc48b4c 100644 --- a/drivers/gpu/drm/i915/i915_drv.h +++ b/drivers/gpu/drm/i915/i915_drv.h @@ -862,6 +862,7 @@ struct intel_gen6_power_mgmt { int last_adj; enum { LOW_POWER, BETWEEN, HIGH_POWER } power; + bool enabled; struct delayed_work delayed_resume_work; /* |