diff --git a/drivers/gpu/drm/i915/intel_dp.c b/drivers/gpu/drm/i915/intel_dp.c
index 1f4242b682c8..ad6925ea2b51 100644
--- a/drivers/gpu/drm/i915/intel_dp.c
+++ b/drivers/gpu/drm/i915/intel_dp.c
@@ -834,11 +834,6 @@ static bool ironlake_edp_panel_on (struct intel_dp *intel_dp)
 	I915_WRITE(PCH_PP_CONTROL, pp);
 	POSTING_READ(PCH_PP_CONTROL);
 
-	/* Ouch. We need to wait here for some panels, like Dell e6510
-	 * https://bugs.freedesktop.org/show_bug.cgi?id=29278i
-	 */
-	msleep(300);
-
 	if (wait_for((I915_READ(PCH_PP_STATUS) & idle_on_mask) == idle_on_mask,
 		     5000))
 		DRM_ERROR("panel on wait timed out: 0x%08x\n",
@@ -875,11 +870,6 @@ static void ironlake_edp_panel_off (struct drm_device *dev)
 	pp |= PANEL_POWER_RESET; /* restore panel reset bit */
 	I915_WRITE(PCH_PP_CONTROL, pp);
 	POSTING_READ(PCH_PP_CONTROL);
-
-	/* Ouch. We need to wait here for some panels, like Dell e6510
-	 * https://bugs.freedesktop.org/show_bug.cgi?id=29278i
-	 */
-	msleep(300);
 }
 
 static void ironlake_edp_backlight_on (struct drm_device *dev)