drm/i915: Rename primary_disabled to primary_enabled

Let's try to avoid these confusing negated booleans.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b54a4cf..ebe5d08 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -1840,9 +1840,9 @@
 	/* If the pipe isn't enabled, we can't pump pixels and may hang */
 	assert_pipe_enabled(dev_priv, pipe);
 
-	WARN(!intel_crtc->primary_disabled, "Primary plane already enabled\n");
+	WARN(intel_crtc->primary_enabled, "Primary plane already enabled\n");
 
-	intel_crtc->primary_disabled = false;
+	intel_crtc->primary_enabled = true;
 
 	reg = DSPCNTR(plane);
 	val = I915_READ(reg);
@@ -1870,9 +1870,9 @@
 	int reg;
 	u32 val;
 
-	WARN(intel_crtc->primary_disabled, "Primary plane already disabled\n");
+	WARN(!intel_crtc->primary_enabled, "Primary plane already disabled\n");
 
-	intel_crtc->primary_disabled = true;
+	intel_crtc->primary_enabled = false;
 
 	reg = DSPCNTR(plane);
 	val = I915_READ(reg);
@@ -10706,7 +10706,7 @@
 								 &crtc->config);
 
 		crtc->base.enabled = crtc->active;
-		crtc->primary_disabled = !crtc->active;
+		crtc->primary_enabled = crtc->active;
 
 		DRM_DEBUG_KMS("[CRTC:%d] hw state readout: %s\n",
 			      crtc->base.base.id,