From fcd504e31292c9fdba07bcd44350c145bc214183 Mon Sep 17 00:00:00 2001
From: Mikko Perttunen <mperttunen@nvidia.com>
Date: Fri, 9 Jun 2017 15:25:40 +0300
Subject: [PATCH] drm/nouveau/tegra: Don't leave GPU in reset
Git-commit: fcd504e31292c9fdba07bcd44350c145bc214183
Patch-mainline: v4.13-rc1
References: bsc#1095094

On Tegra186 systems with certain firmware revisions, leaving the GPU in
reset can cause a hang. To prevent this, don't leave the GPU in reset.

Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
+++ b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
@@ -82,9 +82,6 @@ nvkm_device_tegra_power_down(struct nvkm
 {
 	int ret;
 
-	reset_control_assert(tdev->rst);
-	udelay(10);
-
 	clk_disable_unprepare(tdev->clk_pwr);
 	if (tdev->clk_ref)
 		clk_disable_unprepare(tdev->clk_ref);