[Intel-gfx] [PATCH v5 8/8] drm/i915: Remove vblank wait from hsw_enable_ips, v2.

[Maarten Lankhorst]

intel_post_plane_update did an extra vblank wait that's no longer needed when enabling ips.

Changes since v1:
- Add comment explaining why vblank wait is performed. (Paulo)

Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
Noticed this one still in my branch, does this look ok?

~Maarten

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index dc920cfc3fd7..6dcc159ce6ac 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -4454,8 +4454,11 @@ void hsw_enable_ips(struct intel_crtc *crtc)
 	if (!crtc->config->ips_enabled)
 		return;
 
-	/* We can only enable IPS after we enable a plane and wait for a vblank */
-	intel_wait_for_vblank(dev, crtc->pipe);
+	/*
+	 * We can only enable IPS after we enable a plane and wait for a vblank
+	 * This function is called from post_plane_update, which is run after
+	 * a vblank wait.
+	 */
 
 	assert_plane_enabled(dev_priv, crtc->plane);
 	if (IS_BROADWELL(dev)) {