drm/i915: Make HAS_GMCH_DISPLAY only take dev_priv

More .rodata string saving by avoid __I915__ magic inside WARNs.

v2: Add parantheses around dev_priv. (Ville Syrjala)

Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: David Weinehall <david.weinehall@linux.intel.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acked-by: Jani Nikula <jani.nikula@linux.intel.com>
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index 397e10f..ad3ff4f 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -1265,6 +1265,7 @@
 {
 	struct intel_hdmi *hdmi = intel_attached_hdmi(connector);
 	struct drm_device *dev = intel_hdmi_to_dev(hdmi);
+	struct drm_i915_private *dev_priv = to_i915(dev);
 	enum drm_mode_status status;
 	int clock;
 	int max_dotclk = to_i915(connector->dev)->max_dotclk_freq;
@@ -1287,7 +1288,7 @@
 	status = hdmi_port_clock_valid(hdmi, clock, true);
 
 	/* if we can't do 8bpc we may still be able to do 12bpc */
-	if (!HAS_GMCH_DISPLAY(dev) && status != MODE_OK)
+	if (!HAS_GMCH_DISPLAY(dev_priv) && status != MODE_OK)
 		status = hdmi_port_clock_valid(hdmi, clock * 3 / 2, true);
 
 	return status;
@@ -1297,7 +1298,7 @@
 {
 	struct drm_device *dev = crtc_state->base.crtc->dev;
 
-	if (HAS_GMCH_DISPLAY(dev))
+	if (HAS_GMCH_DISPLAY(to_i915(dev)))
 		return false;
 
 	/*