Patch "drm/nouveau/kms/nv50: fix source-rect-only plane updates" has been added to the 4.11-stable tree

[<gregkh@linuxfoundation.org>]

This is a note to let you know that I've just added the patch titled

    drm/nouveau/kms/nv50: fix source-rect-only plane updates

to the 4.11-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     drm-nouveau-kms-nv50-fix-source-rect-only-plane-updates.patch
and it can be found in the queue-4.11 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 36601c2b36e27435d9be33cfa092120ff69914eb Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 1 May 2017 16:52:03 +1000
Subject: drm/nouveau/kms/nv50: fix source-rect-only plane updates

From: Ben Skeggs <bskeggs@redhat.com>

commit 36601c2b36e27435d9be33cfa092120ff69914eb upstream.

This "optimisation" (which was originally meant to skip updating cursor
settings in the core channel on position-only updates) turned out to be
pointless in the final design of the code before it was merged.

Remove it completely, as it breaks other cases.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/nouveau/nv50_display.c |    8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

--- a/drivers/gpu/drm/nouveau/nv50_display.c
+++ b/drivers/gpu/drm/nouveau/nv50_display.c
@@ -906,11 +906,9 @@ nv50_wndw_atomic_check(struct drm_plane
 		if (memcmp(&armw->point, &asyw->point, sizeof(asyw->point)))
 			asyw->set.point = true;
 
-		if (!varm || asym || armw->state.fb != asyw->state.fb) {
-			ret = nv50_wndw_atomic_check_acquire(wndw, asyw, asyh);
-			if (ret)
-				return ret;
-		}
+		ret = nv50_wndw_atomic_check_acquire(wndw, asyw, asyh);
+		if (ret)
+			return ret;
 	} else
 	if (varm) {
 		nv50_wndw_atomic_check_release(wndw, asyw, harm);


Patches currently in stable-queue which might be from bskeggs@redhat.com are

queue-4.11/drm-nouveau-tmr-ack-interrupt-before-processing-alarms.patch
queue-4.11/drm-nouveau-tmr-fix-corruption-of-the-pending-list-when-rescheduling-an-alarm.patch
queue-4.11/drm-nouveau-tmr-avoid-processing-completed-alarms-when-adding-a-new-one.patch
queue-4.11/drm-nouveau-mmu-nv4a-use-nv04-mmu-rather-than-the-nv44-one.patch
queue-4.11/drm-nouveau-therm-remove-ineffective-workarounds-for-alarm-bugs.patch
queue-4.11/drm-nouveau-kms-nv50-skip-core-channel-cursor-update-on-position-only-changes.patch
queue-4.11/drm-nouveau-kms-nv50-fix-source-rect-only-plane-updates.patch
queue-4.11/drm-nouveau-tmr-handle-races-with-hw-when-updating-the-next-alarm-time.patch