drm/plane-helper: Adapt cursor hack to transitional helpers

commit 2e7f43c41c042d6fed4d67aceeaae32d8f102e98 upstream.

In

commit f02ad907cd9e7fe3a6405d2d005840912f1ed258
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date:   Thu Jan 22 16:36:23 2015 +0100

    drm/atomic-helpers: Recover full cursor plane behaviour

we've added a hack to atomic helpers to never to vblank waits for
cursor updates through the legacy apis since that's what X expects.
Unfortunately we've (again) forgotten to adjust the transitional
helpers. Do this now.

This fixes regressions for drivers only partially converted over to
atomic (like i915).

Reported-by: Pekka Paalanen <ppaalanen@gmail.com>
Cc: Pekka Paalanen <ppaalanen@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Reviewed-and-tested-by: Mario Kleiner <mario.kleiner.de@gmail.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
index 5ba5792bfdbabd920b5678740a1930f1d90ace2b..98b125763ecd7769f46d5d696697798f1cd89082 100644 (file)
--- a/drivers/gpu/drm/drm_plane_helper.c
+++ b/drivers/gpu/drm/drm_plane_helper.c
@@ -476,6 +476,9 @@ int drm_plane_helper_commit(struct drm_plane *plane,
                if (!crtc[i])
                        continue;
 
+               if (crtc[i]->cursor == plane)
+                       continue;
+
                /* There's no other way to figure out whether the crtc is running. */
                ret = drm_crtc_vblank_get(crtc[i]);
                if (ret == 0) {