--- f5d49a7ac745e576dbf049409ec3f8d9a0c5ccb5
+++ aafbef70de506b9bc9f177c57a81c3a316e44629
@@ -258,7 +258,7 @@ typedef struct drm_i915_private {
 
 	struct notifier_block lid_notifier;
 
-	int crt_ddc_bus; /* -1 = unknown, else GPIO to use for CRT DDC */
+	int crt_ddc_bus; /* 0 = unknown, else GPIO to use for CRT DDC */
 	struct drm_i915_fence_reg fence_regs[16]; /* assume 965 */
 	int fence_reg_start; /* 4 if userland hasn't ioctl'd us yet */
 	int num_fence_regs; /* 8 on pre-965, 16 otherwise */