From: Stéphane Marchesin <marcheu@chromium.org>
Date: Wed, 30 Jan 2013 03:41:59 +0000 (-0800)
Subject: drm/i915: Increase the RC6p threshold.
X-Git-Tag: v3.4.37~13
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0530082c3595511fa2bfc1434a5ad809e5ec90a3;p=karo-tx-linux.git

drm/i915: Increase the RC6p threshold.

commit 0920a48719f1ceefc909387a64f97563848c7854 upstream.

This increases GEN6_RC6p_THRESHOLD from 100000 to 150000. For some
reason this avoids the gen6_gt_check_fifodbg.isra warnings and
associated GPU lockups, which makes my ivy bridge machine stable.

Signed-off-by: Stéphane Marchesin <marcheu@chromium.org>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 67f6db534090..7ccf896f28af 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8364,7 +8364,7 @@ void gen6_enable_rps(struct drm_i915_private *dev_priv)
 	I915_WRITE(GEN6_RC_SLEEP, 0);
 	I915_WRITE(GEN6_RC1e_THRESHOLD, 1000);
 	I915_WRITE(GEN6_RC6_THRESHOLD, 50000);
-	I915_WRITE(GEN6_RC6p_THRESHOLD, 100000);
+	I915_WRITE(GEN6_RC6p_THRESHOLD, 150000);
 	I915_WRITE(GEN6_RC6pp_THRESHOLD, 64000); /* unused */
 
 	rc6_mode = intel_enable_rc6(dev_priv->dev);