3.2-stable review patch. If anyone has any objections, please let me know.
------------------
From: Chris Wilson <ch...@chris-wilson.co.uk>
commit d56d8b28e9247e7e35e02fbb12b12239a2c33ad1 upstream.
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 <ch...@chris-wilson.co.uk>
Signed-off-by: Keith Packard <kei...@keithp.com>
Signed-off-by: Ben Hutchings <b...@decadent.org.uk>
---
drivers/gpu/drm/i915/intel_display.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c
b/drivers/gpu/drm/i915/intel_display.c
index b3b51c4..19f35ec 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1872,7 +1872,7 @@ static void intel_update_fbc(struct drm_device *dev)
if (enable_fbc < 0) {
DRM_DEBUG_KMS("fbc set to per-chip default\n");
enable_fbc = 1;
- if (INTEL_INFO(dev)->gen <= 5)
+ if (INTEL_INFO(dev)->gen <= 6)
enable_fbc = 0;
}
if (!enable_fbc) {
--
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