diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index f92da0a32f0d30d02fe8afeb09f5272a16b8a060..062dc22a66733b13b7e4ccc9c3fccd7ef256ce81 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -497,8 +497,8 @@ void drm_calc_timestamping_constants(struct drm_crtc *crtc)
 	/* Dot clock in Hz: */
 	dotclock = (u64) crtc->hwmode.clock * 1000;
 
-	/* Fields of interlaced scanout modes are only halve a frame duration.
-	 * Double the dotclock to get halve the frame-/line-/pixelduration.
+	/* Fields of interlaced scanout modes are only half a frame duration.
+	 * Double the dotclock to get half the frame-/line-/pixelduration.
 	 */
 	if (crtc->hwmode.flags & DRM_MODE_FLAG_INTERLACE)
 		dotclock *= 2;