linux-kernel - [PATCH 4.9 55/69] drm/nouveau/disp/mcp7x: disable dptmds workaround

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Message-Id: <20170419141619.177004633@linuxfoundation.org>
Date:   Wed, 19 Apr 2017 16:43:11 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Ben Skeggs <bskeggs@...hat.com>,
        Roy Spliet <nouveau@...iet.org>,
        Ben Hutchings <ben@...adent.org.uk>
Subject: [PATCH 4.9 55/69] drm/nouveau/disp/mcp7x: disable dptmds workaround

4.9-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Skeggs <bskeggs@...hat.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@...hat.com>
Tested-by: Roy Spliet <nouveau@...iet.org>
Cc: Ben Hutchings <ben@...adent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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;