The patch below does not apply to the 3.14-stable tree.
If someone wants it applied there, or to any other stable or longterm
tree, then please email the backport, including the original git commit
id to <stable@xxxxxxxxxxxxxxx>.
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
>From 2208d655a91f9879bd9a39ff9df05dd668b3512c Mon Sep 17 00:00:00 2001
From: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Fri, 14 Nov 2014 09:25:29 +0100
Subject: [PATCH] drm/i915: drop WaSetupGtModeTdRowDispatch:snb
This reverts the regressing
commit 6547fbdbfff62c99e4f7b4f985ff8b3454f33b0f
Author: Daniel Vetter <daniel.vetter@xxxxxxxx>
Date: Fri Dec 14 23:38:29 2012 +0100
drm/i915: Implement WaSetupGtModeTdRowDispatch
that causes GPU hangs immediately on boot.
Reported-by: Leo Wolf <jclw@xxxxxxxxx>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=79996
Cc: stable@xxxxxxxxxxxxxxx (v3.8+)
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
[Jani: amended the commit message slightly.]
Signed-off-by: Jani Nikula <jani.nikula@xxxxxxxxx>
diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index c27b6140bfd1..ad2fd605f76b 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -5469,11 +5469,6 @@ static void gen6_init_clock_gating(struct drm_device *dev)
I915_WRITE(_3D_CHICKEN,
_MASKED_BIT_ENABLE(_3D_CHICKEN_HIZ_PLANE_DISABLE_MSAA_4X_SNB));
- /* WaSetupGtModeTdRowDispatch:snb */
- if (IS_SNB_GT1(dev))
- I915_WRITE(GEN6_GT_MODE,
- _MASKED_BIT_ENABLE(GEN6_TD_FOUR_ROW_DISPATCH_DISABLE));
-
/* WaDisable_RenderCache_OperationalFlush:snb */
I915_WRITE(CACHE_MODE_0, _MASKED_BIT_DISABLE(RC_OP_FLUSH_ENABLE));
--
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