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drm/i915: Disable pwrctx before unpin and free 

Otherwise the chip may scribble over free memory.

Signed-off-by: Kristian Høgsberg <krh@bitplanet.net>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kristian Høgsberg 2009-11-11 12:19:18 -05:00 committed by Eric Anholt
parent 69341a5e01
commit c1b5dea097
1 changed files with 5 additions and 0 deletions
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5
drivers/gpu/drm/i915/intel_display.c
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@ -4588,6 +4588,11 @@ void intel_modeset_cleanup(struct drm_device *dev)
dev_priv->display.disable_fbc(dev);
if (dev_priv->pwrctx) {
struct drm_i915_gem_object *obj_priv;
obj_priv = dev_priv->pwrctx->driver_private;
I915_WRITE(PWRCTXA, obj_priv->gtt_offset &~ PWRCTX_EN);
I915_READ(PWRCTXA);
i915_gem_object_unpin(dev_priv->pwrctx);
drm_gem_object_unreference(dev_priv->pwrctx);
}