drm/i915:: Disable FBC on SandyBridge
Enabling FBC is causing the BLT ring to run between 10-100x slower than normal and frequently lockup. The interim solution is disable FBC once more until we know why. Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Keith Packard <keithp@keithp.com>
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@ -1872,7 +1872,7 @@ static void intel_update_fbc(struct drm_device *dev)
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if (enable_fbc < 0) {
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DRM_DEBUG_KMS("fbc set to per-chip default\n");
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enable_fbc = 1;
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if (INTEL_INFO(dev)->gen <= 5)
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if (INTEL_INFO(dev)->gen <= 6)
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enable_fbc = 0;
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}
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if (!enable_fbc) {
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