From: Mikko Perttunen <mperttunen@nvidia.com>
Date: Fri, 9 Jun 2017 12:25:40 +0000 (+0300)
Subject: drm/nouveau/tegra: Don't leave GPU in reset
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fcd504e31292c9fdba07bcd44350c145bc214183;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

drm/nouveau/tegra: Don't leave GPU in reset

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>
---

diff --git a/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c b/drivers/gpu/drm/nouveau/nvkm/engine/device/tegra.c
index 3d42cdbbe9c0..189ed80e21ff 100644
--- 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_device_tegra *tdev)
 {
 	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);