Patch "drm/nouveau/disp/mcp7x: disable dptmds workaround" has been added to the 4.9-stable tree

Patch "drm/nouveau/disp/mcp7x: disable dptmds workaround" has been added to the 4.9-stable tree

[gregkh]

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

    drm/nouveau/disp/mcp7x: disable dptmds workaround

to the 4.9-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-disp-mcp7x-disable-dptmds-workaround.patch
and it can be found in the queue-4.9 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 7dfee6827780d4228148263545af936d0cae8930 Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Mon, 9 Jan 2017 10:22:15 +1000
Subject: drm/nouveau/disp/mcp7x: disable dptmds workaround

From: Ben Skeggs <bskeggs@redhat.com>

commit 7dfee6827780d4228148263545af936d0cae8930 upstream.

The workaround appears to cause regressions on these boards, and from
inspection of RM traces, NVIDIA don't appear to do it on them either.

Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Tested-by: Roy Spliet <nouveau@spliet.org>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c |    2 --
 1 file changed, 2 deletions(-)

--- a/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/disp/nv50.c
@@ -433,8 +433,6 @@ nv50_disp_dptmds_war(struct nvkm_device
 	case 0x94:
 	case 0x96:
 	case 0x98:
-	case 0xaa:
-	case 0xac:
 		return true;
 	default:
 		break;


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

queue-4.9/drm-nouveau-mpeg-mthd-returns-true-on-success-now.patch
queue-4.9/drm-nouveau-disp-mcp7x-disable-dptmds-workaround.patch
queue-4.9/drm-nouveau-mmu-nv4a-use-nv04-mmu-rather-than-the-nv44-one.patch