drm/i915: don't assert disabled FDI before disabling the FDI

On Haswell/LPT we must disable the PCH transcoder before we disable
the FDI, so don't check for disabled FDI there.
Signed-off-by: NPaulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: NDaniel Vetter <daniel.vetter@ffwll.ch>

drivers/gpu/drm/i915/intel_display.c

@@ -1770,15 +1770,10 @@ static void ironlake_disable_pch_transcoder(struct drm_i915_private *dev_priv,
 		DRM_ERROR("failed to disable transcoder %d\n", pipe);
 }
 
-static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv,
-				       enum transcoder cpu_transcoder)
+static void lpt_disable_pch_transcoder(struct drm_i915_private *dev_priv)
 {
 	u32 val;
 
-	/* FDI relies on the transcoder */
-	assert_fdi_tx_disabled(dev_priv, cpu_transcoder);
-	assert_fdi_rx_disabled(dev_priv, TRANSCODER_A);
-
 	val = I915_READ(_TRANSACONF);
 	val &= ~TRANS_ENABLE;
 	I915_WRITE(_TRANSACONF, val);
@@ -3638,7 +3633,7 @@ static void haswell_crtc_disable(struct drm_crtc *crtc)
 
 	if (is_pch_port) {
 		ironlake_fdi_disable(crtc);
-		lpt_disable_pch_transcoder(dev_priv, cpu_transcoder);
+		lpt_disable_pch_transcoder(dev_priv);
 		ironlake_fdi_pll_disable(intel_crtc);
 	}