drm/i915/vlv: remove wait for previous GFX clk disable request

[linux-2.6-block.git] / drivers / gpu / drm / i915 / i915_drv.c

diff --git a/drivers/gpu/drm/i915/i915_drv.c b/drivers/gpu/drm/i915/i915_drv.c
index 6e9ab2fb1647b76cf22c3fbb39c27569190a49a8..e70adfd3b2d1dbf6f06a894a70c79ac8ca46547c 100644 (file)
--- a/drivers/gpu/drm/i915/i915_drv.c
+++ b/drivers/gpu/drm/i915/i915_drv.c
@@ -1240,21 +1240,7 @@ int vlv_force_gfx_clock(struct drm_i915_private *dev_priv, bool force_on)
        u32 val;
        int err;
 
-       val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
-
 #define COND (I915_READ(VLV_GTLC_SURVIVABILITY_REG) & VLV_GFX_CLK_STATUS_BIT)
-       /* Wait for a previous force-off to settle */
-       if (force_on && !IS_CHERRYVIEW(dev_priv->dev)) {
-               /* WARN_ON only for the Valleyview */
-               WARN_ON(!!(val & VLV_GFX_CLK_FORCE_ON_BIT) == force_on);
-
-               err = wait_for(!COND, 20);
-               if (err) {
-                       DRM_ERROR("timeout waiting for GFX clock force-off (%08x)\n",
-                                 I915_READ(VLV_GTLC_SURVIVABILITY_REG));
-                       return err;
-               }
-       }
 
        val = I915_READ(VLV_GTLC_SURVIVABILITY_REG);
        val &= ~VLV_GFX_CLK_FORCE_ON_BIT;