From: Ville Syrjälä <[email protected]>

Kill the HSW check from the single thread force wake code. HSW
uses MT force wake exclusively these days.

The commit that removed HSW single thread forcewake support:

 commit 36ec8f877481449bdfa072e6adf2060869e2b970
 Author: Daniel Vetter <[email protected]>
 Date:   Thu Oct 18 14:44:35 2012 +0200

    drm/i915: unconditionally use mt forcewake on hsw/ivb

Signed-off-by: Ville Syrjälä <[email protected]>
---
 drivers/gpu/drm/i915/intel_pm.c | 11 ++---------
 1 file changed, 2 insertions(+), 9 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
index 2d4ec08..5479363 100644
--- a/drivers/gpu/drm/i915/intel_pm.c
+++ b/drivers/gpu/drm/i915/intel_pm.c
@@ -4271,21 +4271,14 @@ static void __gen6_gt_force_wake_reset(struct 
drm_i915_private *dev_priv)
 
 static void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv)
 {
-       u32 forcewake_ack;
-
-       if (IS_HASWELL(dev_priv->dev))
-               forcewake_ack = FORCEWAKE_ACK_HSW;
-       else
-               forcewake_ack = FORCEWAKE_ACK;
-
-       if (wait_for_atomic((I915_READ_NOTRACE(forcewake_ack) & 1) == 0,
+       if (wait_for_atomic((I915_READ_NOTRACE(FORCEWAKE_ACK) & 1) == 0,
                            FORCEWAKE_ACK_TIMEOUT_MS))
                DRM_ERROR("Timed out waiting for forcewake old ack to 
clear.\n");
 
        I915_WRITE_NOTRACE(FORCEWAKE, 1);
        POSTING_READ(ECOBUS); /* something from same cacheline, but !FORCEWAKE 
*/
 
-       if (wait_for_atomic((I915_READ_NOTRACE(forcewake_ack) & 1),
+       if (wait_for_atomic((I915_READ_NOTRACE(FORCEWAKE_ACK) & 1),
                            FORCEWAKE_ACK_TIMEOUT_MS))
                DRM_ERROR("Timed out waiting for forcewake to ack request.\n");
 
-- 
1.7.12.4

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