drm/i915: INTEL_INFO->gen supercedes i8xx, i9xx, i965g

Avoid confusion between i965g meaning broadwater and the gen4+ chipset
families.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_tv.c b/drivers/gpu/drm/i915/intel_tv.c
index e03783f..49ab11c 100644
--- a/drivers/gpu/drm/i915/intel_tv.c
+++ b/drivers/gpu/drm/i915/intel_tv.c
@@ -1139,7 +1139,7 @@
 			   color_conversion->av);
 	}
 
-	if (IS_I965G(dev))
+	if (INTEL_INFO(dev)->gen >= 4)
 		I915_WRITE(TV_CLR_KNOBS, 0x00404000);
 	else
 		I915_WRITE(TV_CLR_KNOBS, 0x00606000);
@@ -1165,7 +1165,7 @@
 		I915_WRITE(dspbase_reg, I915_READ(dspbase_reg));
 
 		/* Wait for vblank for the disable to take effect */
-		if (!IS_I9XX(dev))
+		if (IS_GEN2(dev))
 			intel_wait_for_vblank(dev, intel_crtc->pipe);
 
 		I915_WRITE(pipeconf_reg, pipeconf & ~PIPECONF_ENABLE);