Patch "drm/nouveau/kms/nv50-: guard against enabling cursor on disabled heads" has been added to the 4.1-stable tree

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

drm/nouveau/kms/nv50-: guard against enabling cursor on disabled heads

to the 4.1-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-guard-against-enabling-cursor-on-disabled-heads.patch
and it can be found in the queue-4.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Ben Skeggs <[email protected]>
Date: Tue, 28 Jul 2015 17:20:57 +1000
Subject: drm/nouveau/kms/nv50-: guard against enabling cursor on disabled heads

From: Ben Skeggs <[email protected]>

commit 697bb728d9e2367020aa0c5af7363809d7658e43 upstream.

Userspace has started doing this, which upsets the display class hw error checking in various unpleasant ways.

---
 drivers/gpu/drm/nouveau/nv50_display.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

@@ -979,7 +979,7 @@ nv50_crtc_cursor_show_hide(struct nouvea
 {
 	struct nv50_mast *mast = nv50_mast(nv_crtc->base.dev);
 
-	if (show && nv_crtc->cursor.nvbo)
+	if (show && nv_crtc->cursor.nvbo && nv_crtc->base.enabled)
 		nv50_crtc_cursor_show(nv_crtc);
 	else
 		nv50_crtc_cursor_hide(nv_crtc);

Patches currently in stable-queue which might be from [email protected] are

queue-4.1/drm-nouveau-kms-nv50-guard-against-enabling-cursor-on-disabled-heads.patch queue-4.1/drm-nouveau-fbcon-nv11-correctly-account-for-ring-space-usage.patch